JPH1016901A - Method for scraping out powdered medicine of powdered medicine portion packaging equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To package a desired portion of a powdered medicine by scraping out the same accurately. SOLUTION: For portion packaging by a predetermined portion, a powdered medicine stored in an R ring shaped groove 21 formed in the periphery of an R disk 13 is scraped from one direction of its circumference in a predetermined range and then is scraped out. Scraping of the powdered medicine should be done within the range that break of the powdered medicine owing to scraping does not exceed the range of scraping out. And when the range of scraping is smaller than the range of scraping out for 1 portion packaging, the range for 1 portion packaging is reached by scraping and scraping out for a plurality of times.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for dispensing a powdered medicine, which is precisely scraped out by a predetermined amount, in a powdering and packaging apparatus, in order to pack the powdered medicine supplied into an annular groove of a distribution dish for each dose. is there.

[0002]

2. Description of the Related Art Conventionally, there is a powdery medicine packaging apparatus having the structure shown in FIG. That is, in this powder packaging apparatus, the feeder 1 supplies a predetermined amount of powder to the R disk 2. While the R disk 2 rotates, the powder is uniformly held in the R annular groove 3 on the outer periphery thereof. The scraping device 4 scrapes out the powder in the R annular groove 3 by a predetermined amount, and the hopper 6 of the packaging device 5
Let fall inside. The packaging device 5 sequentially packages one package of powder stored in the hopper 6. As shown in FIG. 6, the scraping device 4 is located in the R-shaped groove 3 and scrapes the powder in the circumferential direction, and is rotatably attached to the scraping plate 7. A scraping plate 8 for scraping the powder in the R-shaped annular groove 3 into the hopper 6; and a partition plate 9 fixed to the scraping plate 8 and separating the powder from the scraping plate 7 within a predetermined range (a scraping range). It is a structure to have.

[0003] A method of scraping out the powder from the R disk 2 by the powder packaging apparatus is as follows. First, the scraping device 4 is lowered, and the scraping plate 7 is positioned in the R annular groove 3 of the R disk 2. Then, the R disk 2 is rotated by a predetermined angle, and the powder in the R annular groove 3 is scraped in the circumferential direction by the scraping plate 7 as shown in FIG. In this case, as shown in FIG. 7B, it is assumed that the scattered powder spreads beyond the rake-out range as shown in FIG. 7B. In view of this, the number of scrapings necessary to scrape one package of powder into the hopper 6 is changed, as shown in FIG. 7C, according to the number of divisions of the powder supplied on the R disk 2. For example, twice in 12 divisions, 3 in 8 divisions
The powdering agent is determined as follows, and the scraping plate 7 is rotated for each scraping operation by the scraping plate 7 to scrape the powder into the hopper 6.

[0004]

By the way, the angle of repose when a powder is swept is greatly different depending on the characteristics of the powder, such as the kind of the powder and the particle size. For example, if the particle size of the powder is small, the angle of repose is large and the range of collapse and spread is small. Conversely, if it is coarse, the angle of repose is small and the range of collapse and spread is large.

[0005] However, in the conventional powder scraping method, as described above, the rotation angle of the R disk 2 is uniformly determined according to the number of divisions. The number of times of scraping and scraping must be adjusted to the powder with the largest spread range, which is inefficient.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for scraping out a powder of a powder packaging apparatus which can accurately and efficiently scrape out a powder and package a desired amount.

[0007]

In order to achieve the above object, according to the present invention, a powdered medicine uniformly supplied in the circumferential direction of a distribution dish is swept from one circumferential direction over a predetermined scraping range. In the powder dispensing method of a powder dispensing and packaging apparatus configured to scrape over a predetermined scraping range, the scraping range is set to a range in which the scraped powder does not spread beyond the scraping range, and the scraping range is one package. When it is less than the scraping range of one minute, within the scraping range of the one package,
The scraping and scraping are performed in a plurality of times.

[0008] The scraping range may be determined based on the type and supply amount of the powder or a difference between both. As the supply amount of the powdered medicine, data stored in advance or preferably measured values may be used.

It is preferable that the scraping range is corrected based on a difference in environmental conditions such as humidity and temperature that affect the disintegration of the powder.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a block diagram showing a powdered medicine packaging apparatus employing a powdered medicine scraping method according to the present invention and its related equipment. The powder dispensing and packaging apparatus 11 generally includes a vibration feeder 12, an R disk 13, a scraping device 14, and a packaging device 15 arranged from the powder dispensing side, and these are driven and controlled by a control device 16. Control device 16
Is connected to a host computer 20 in addition to a division number input device 17, a grain shape input device 18, and a weighing device 19. The storage unit (not shown) of the control device 16 stores characteristic data such as shape, particle size, viscosity, etc., corresponding to each powder.

The vibrating feeder 12 uniformly supplies the powder supplied by vibrating itself to the R disk 13 so as not to form a lump. The R disk 13 has an R annular groove 21 which opens upward in the outer peripheral portion, and is rotated by a pulse motor 22. The scraping device 14 includes a scraping plate 23, a scraping plate 24, and a partition plate 25 (having the same configuration as the conventional example shown in FIG. 6). The scraping plate 24 and the partition plate 25 are rotatably provided on the scraping plate 23. When the scraping device 14 moves up and down with respect to the R disk 13 and descends, the scraping plate 23 is positioned in the R annular groove 21. The scraping device 14 includes the scraping plate 2
From 3, the powdered medicine located in a predetermined range (scooping range) in the circumferential direction is scraped out and supplied to the packaging device 15. The wrapping device 15 includes a hopper 26 for receiving the powder supplied from the scraping device 14, and a wrapping paper P below the hopper 26.
And a printing unit 28 for printing on the wrapping paper P.

Next, the operation of the powder packaging control by the powder packaging apparatus will be described with reference to the flowcharts of FIGS.

As shown in FIG. 2, the control of the dispensing of the powder is performed by a powder supply process (step S1), a powder scraping process (step S2) according to the present invention, and a powder packaging process (step S1).
3) is performed.

In the powder supply process, as shown in FIG. 3, first, the R disk 13 is rotated at a constant speed (step S).
4) By driving the vibration feeder 12, the powder is uniformly supplied to the R annular groove 21 of the R disk 13 (step S5). Then, it is determined whether or not all of the predetermined amount of the powdered medicine has been supplied (step S6). If all of the powdered medicine has been supplied, the rotation of the R disk 13 is stopped (step S6).
7).

In the powder dispensing process, as shown in FIG. 4, first, information on the powder to be packaged, for example, the supply amount and the powder characteristics of the powder is read from the memory in the control device 16 (step S8). In the present embodiment, an actual measurement value measured by the measuring device 19 before being charged from the vibrating feeder 12 is used as the powder amount. However, it is not always necessary to use the actually measured value, and a calculated value based on the prescription data input from a keyboard or the like may be used as appropriate. Also,
The powder characteristics refer to viscosity, angle of repose, compression ratio, spatula angle, degree of cohesion, and the like, and are stored in advance as data based on the name of the powder. In the present embodiment, by using the angle of repose, the shape of the particles, the size, the difference in viscosity, etc., due to the difference in the type of powder, and the difference in the supply amount of the powder, the powder that is raked by the scraper plate 23 Consider the difference in quantity. Specifically, the corresponding data is read based on the name of the powder. For example, in the case of powder consisting of powder having a small particle size, the angle of repose is set to 10 ° for 10 g, 15 ° for 20 g, and so on according to the supply amount. In the case of a powder consisting of granules having a large particle size, 10
For g, 15 °, for 20 g, etc. are determined.

Next, the read powder amount data, that is, the total powder amount supplied to the R annular groove 21 of the R disk 13 and 1
The number of divisions is calculated based on the dose (step S9).
That is, the number of divisions is calculated by dividing the total amount of powder by one dose.

Then, the number of times of scraping is calculated based on the read information on the powdered medicine (step S10). The number of times of scraping is calculated as follows. That is, based on the type of powder to be treated, the amount of powder to be swept, and the angle of repose, it is calculated to what extent the portion that rises beyond the average height of the powder when supplied to the R annular groove 21 is spread. Then, it is determined whether or not the spread range is within a range that can be scraped out by the scraping device 14. If it is within the range in which the powder can be scraped, the number of times of scraping is set to 1. If not, how many times the powder in this range can be scraped is calculated. Here, with respect to the scraping range, the spreading range of the powder is set to a value that does not exceed the scraping range by the scraping device 14. Of course, the scraping range is preferably as large as possible so that the number of times of scraping can be reduced even once.

When the number of times of scraping is calculated in this way, the scraping device 14 is lowered to position the scraping plate 10 in the R annular groove 21 of the R disk 13 (step S1).
1) The R disk 13 is rotated to scrape powders (step S12). As described above, the rotation of the R disk 13 is performed based on the rotation angle calculated from the number of divisions and the number of times of scraping. Therefore, the powdered drug does not move beyond the range of being scraped out by the scraping device 14.
Thereafter, the scraping plate 10 of the scraping device 14 is rotated to scrape out a predetermined amount of the powder (step S13).

Subsequently, it is determined whether the supply of the powder for one package has been completed (step S14). That is, it is determined whether or not steps S12 and S13 have been repeated for the number of times of scraping determined in step S10. When the supply of one package is completed, the powder dispensing process ends.

In the wrapping process, the wrapping paper P wound on a roll
Is sequentially rewound, the surface is subjected to predetermined printing, only one location is opened, and one package of powdered medicine is wrapped via the hopper 26, and then the opening is thermally bonded. .

Thereafter, until the control of dispensing of all the powders is completed (step S17), the powder is scraped out (step S17).
2) and the powder packaging process (step S3) are repeated,
When all the powder on the disk 13 is scraped, the powder supply control is terminated.

In the scraping operation of the powder dispensing process, it is preferable to consider differences in surrounding environmental conditions. That is, for example, when the humidity is lower than a standard value (humidity suitable for handling powdered medicine), it is determined that the fluidity of the powdered medicine is good, and the spread range of the powdered medicine during the scraping operation is set wide. In this case, the humidity may be detected by a humidity sensor or the like, and it is preferable that an input signal from the humidity sensor or the like be taken into the control device 16.

[0024]

As is apparent from the above description, according to the powder dispensing method of the powder dispensing and packaging apparatus of the present invention, the powder dispensing operation is performed a plurality of times by scraping the powder so as not to spread beyond the dispensing range. , The packaging accuracy is improved, and the amount of powdered medicine per packet does not vary.

Since the scraping range is calculated based on the type and supply amount of the powdered medicine or the difference between the two, the number of times of the scraping operation can be easily determined.

Further, the scraping range is corrected in consideration of the difference in surrounding environmental conditions, so that the packaging accuracy can be further improved.

[Brief description of the drawings]

FIG. 1 is a block diagram of a powder packaging apparatus employing a powder dispensing method according to the present invention.

FIG. 2 is a flowchart illustrating packaging control.

FIG. 3 is a flowchart showing a powdered medicine supply process.

FIG. 4 is a flowchart showing a powder dispensing process.

FIG. 5 is a schematic view of a powder packaging device according to a conventional example.

FIG. 6 is a perspective view showing the R disk and the scraping device shown in FIG. 5;

FIG. 7 is a cross-sectional view showing a state in which powdered medicine is scraped out.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Powder packaging device 12 Vibration feeder 13 R disk (distribution dish) 14 Scrape-out device 15 Packaging device 21 R annular groove

Claims (6)

[Claims] 1. A powder packing apparatus that uniformly dispenses powdered medicine in a circumferential direction of a distribution dish from one circumferential direction over a predetermined scraping range, and then scrapes the powder over a predetermined scraping range. In the method for scraping powder, the scraping range is set to a range where the scraped powder does not spread beyond the scraping range, and when the scraping range is less than the scraping range of one package, the scraping of one package is performed. A powder dispensing method of a powder dispensing and packaging apparatus, wherein the dispensing and dispensing are performed a plurality of times within the dispensing range. 2. The method according to claim 1, wherein the scraping range is determined based on a difference in type of powder. 3. The method according to claim 1, wherein the scraping range is determined based on a difference in the supply amount of the powder. 4. The powder dispensing method according to claim 1, wherein the scraping range is determined based on a difference in the type and supply amount of the powder. 5. The powder dispensing method according to claim 3, wherein the supply amount of the powder is a measured value. 6. The powdered medicine according to claim 2, wherein the scraping range is corrected based on a difference in environmental conditions that influence the collapse of the powdered medicine such as humidity and temperature. A method for scraping powder from packaging equipment.