JP6597993B2 - Drug divider - Google Patents

Description

  The present invention relates to a drug dividing device that divides a drug such as powder by a predetermined amount, and particularly to a drug dividing device that divides a drug using a dividing disk.

2. Description of the Related Art A powder sachet packaging device that divides and packs powders and the like for each dose is known. The powder medicine packaging device is a combination of a medicine dividing device that divides a medicine such as powder by a predetermined amount and a packaging device that wraps the medicine.
The powder medicine packaging device 900 disclosed in Patent Document 1 is an apparatus for individually packaging powder medicines for each dose. As shown in FIG. 10, a powder feeder 901, a medicine dividing device 902, and a medicine packaging are contained therein. Device 903.
The powder feeder 901 is provided with a piezoelectric element (not shown) under the trough 910 and vibrates the trough 910.

As shown in FIG. 10, the medicine dividing device 902 includes a divided disk 912 and a scraping device 915. The divided disk 912 has a large opening 932 in the center. In addition, the divided disk 912 is surrounded by a groove 931 having a circular cross section around the opening 932 and having an annular shape in plan view. The divided disk 912 is rotated at a constant speed by the motor 919.
The scraping device 915 includes a lifting arm whose tip is lifted and lowered by rotating, and a scraping mechanism.
The scraping mechanism has a disk-shaped scraping plate (disk portion) 917 that is rotated by a motor, and the scraping plate 917 is provided with a scraping member 918.

  The medicine packaging device 903 includes a packaging hopper 920 and a packaging device 921 as shown in FIG.

In the medicine dividing device 902 of the powder dispensing device 900, an amount of powder corresponding to the total amount of the prescribed powder is dropped from the powder feeder 901 onto the divided disk 912.
That is, the piezoelectric element (not shown) of the powder feeder 901 is energized to vibrate the trough 910, and the powder is slowly moved to the tip side by the vibration, and the powder is dropped on the divided disk 912.
At the same time, the divided disk 912 is rotated, and the powder falling from the trough 910 is evenly distributed in the grooves 931 of the divided disk 912.

  When the powder falls on the divided disk 912, the rotation of the divided disk 912 is once stopped. Thereafter, the scraping plate 917 of the scraping device 915 is dropped into the annular groove 931 of the divided disk 912. Thereafter, the divided disk 912 is rotated by an angle corresponding to the number of divisions, and a single dose of powder is collected on the front side of the scraping plate 917. Then, the scraping plate 917 is rotated, and the powder is scraped out of the divided disk 912 by the scraping member 918 and put into the packaging hopper 920. The powder falling from the packaging hopper 920 is packaged by the packaging device 921.

  The medicine dividing device 902 scrapes the powder falling on the divided disk 912 with the scraping device 915. As the direction of scraping the powder, the medicine dividing device 902 is of the type of scraping the outside of the divided disk 912 as in Patent Document 1, and Patent Document 2 Similarly, there is a type of scraping out inside the divided disk 912.

  Comparing the two formats, the method of scraping the inside of the divided disk 912 as in Patent Document 2 is superior in that the overall shape of the drug dividing device 902 can be reduced in size and the accuracy of powder division is high. ing.

Hereinafter, for easy explanation, the center of the divided disk 912 itself (the rotation center of the divided disk 912) may be simply referred to as the rotation center. The annular groove 931 of the divided disk 912 has an arc shape in cross section, and the center of the arc may be referred to as “the center O of the arc of the groove”.
Further, when the divided disk 912 is viewed in plan, there is a large opening 932 in the center, and the inner side of the annular groove 931 is the opening end of the opening 932, but the opening side of the annular groove 931 is referred to as “the inner side of the divided disk. ”Or simply“ inside ”.
On the other hand, the outer peripheral side of the annular groove 931 may be referred to as “the outside of the divided disk” or simply “the outside”.
According to the above expression, it can be said that the medicine dividing device 950 disclosed in Patent Document 2 has a structure that scrapes out the medicine in the annular groove to the inside of the divided disk 912.

Patent Document 2 discloses a split disk 930 as shown in FIG. The divided disk 930 disclosed in Patent Document 2 has an annular groove 931 as shown in FIG. 12, and the cross-sectional shape thereof is a fan-shaped arc of about 160 degrees.
In the divided disk 930 disclosed in Patent Document 2, a line segment OX connecting “the center O of the arc of the groove” and the terminal X on the rotation center side of the divided disk of the arc, and a perpendicular line OY passing through the center O of the arc. Is designed to be about 30 degrees.
The part on the “inside of the divided disk” side of the perpendicular OY passing through the center O of the arc is called “the inner wall B of the groove”, and the part on the “outside of the divided disk” is “outside of the groove” When referred to as “inner wall C”, the sectional shape of the divided disk disclosed in Patent Document 2 is an arc surface in which “inner inner wall B of the groove” is 30 degrees.

JP 2010-70204 A JP-A-8-85502

In the conventional medicine dividing apparatus, when the circular arc shape of the annular groove 931 is viewed, the arc tangent T at the end of the annular groove 931 is largely inclined upward. Therefore, as shown in FIG. 13, when the powder is scraped inward by the scraping device 915, the powder jumps up as shown in FIG.
Hereinafter, this phenomenon will be described.
As described above, the scraping plate 917 is rotated, and the powder is scraped from the divided disk 930 by the scraping member 918. The behavior of the scraping plate 917 and the powder at that time is as shown in FIG. That is, the scraping plate 917 rotates from the state where the scraping member 918 is outside the annular groove 931 as shown in FIG. 13A, and the scraping member 918 is placed in the annular groove 931 as shown in FIG. enter.
The scraping plate 917 further rotates, and the scraping member 918 crawls the bottom of the annular groove 931 and scrapes the powder to the center side of the divided disk 912. As shown in FIGS. The powder is discharged to the inside opening side.

Here, in the divided disk 912 employed in the prior art, the arc tangent T at the end of the annular groove 931 is greatly inclined upward. Therefore, when the scraping member 918 of the scraping plate 917 reaches the vicinity of the edge of the groove as shown in FIG. 13D, the scraping member 918 pushes the powder upward obliquely. Therefore, as shown in FIG. 13 (d), the powder splashes obliquely upward and scatters.
Although the actual amount of scattering is very small, there is a concern that it causes anxiety to pharmacists and the like, although there is no harm even if it is mixed in a medicine package for others.
Accordingly, the present invention focuses on the above-mentioned problems of the prior art, and is an improvement of a drug-split type drug dividing device that uses a divided disk, and it is an object to develop a drug dividing device with less scattered powder. To do.

An aspect for solving the above-described problems includes a split disk having an annular groove centered on the rotation center and rotating about the rotation center by power, and a drug supply means for supplying a drug to the annular groove of the split disk In the medicine dividing device, which has a medicine scraping means for scraping the medicine from the annular groove, and scrapes the medicine supplied to the annular groove by the medicine scraping means from the annular groove to the rotation center side, the sectional shape of the annular groove Is a part or all of an arc, and an angle A formed by a line segment connecting the center of the arc and the end of the arc on the rotation center side and a perpendicular passing through the center of the arc is 0 degree. With the state as a reference, the angle A in a state where the line segment is located closer to the rotation center than the perpendicular is a positive angle, and the angle in a state where the perpendicular is located closer to the rotation center than the line The when negative angle, the angle A is not more than 0 °, drug dividing device, characterized in that there is a horizontal extension portion extended horizontally at the end of the rotation center side of the circular arc.

  In the drug dividing device of this aspect, the cross section of the annular groove has an arc shape. An angle A formed by a line segment connecting the center of the arc and the end of the arc on the rotation center side and a perpendicular passing through the center of the arc is less than 20 degrees. Therefore, in the medicine dividing device according to this aspect, the “inner inner wall B of the groove” is small. In the medicine dividing device according to this aspect, the angle of the tangent line in the vicinity of the “inside of the divided disk” of the arc is less than 20 degrees with respect to the horizontal. Therefore, the angle at which the medicine is discharged inside the divided disk is low, and the medicine is not easily scattered.

Further, in this aspect, the angle A is 0 degree or less, and a horizontal extension portion extended in a horizontal direction is provided at an end of the arc on the rotation center side .

  In this embodiment, the “inner inner wall B of the groove” is eliminated. As for the cross-sectional shape of the annular groove employed in this embodiment, only the “outer inner wall C of the groove” exists and there is no “inner inner wall B of the groove”. According to this aspect, since the medicine is discharged in the horizontal direction, it is difficult for the medicine to scatter when the medicine is discharged inside the divided disk.

In another aspect of the present invention, there are provided a divided disk having an annular groove centered on the rotation center and rotating about the rotation center by power, a drug supply means for supplying a drug to the annular groove of the divided disk, and the annular In the drug dividing device, which has a drug scraping means for scraping the drug from the groove and scrapes the drug supplied to the annular groove by the drug scraping means from the annular groove to the rotation center side, the cross-sectional shape of the annular groove is Reference is based on a state in which the part A or the whole is an arc, and the angle A formed by the line segment connecting the center of the arc and the end of the arc on the rotation center side and the perpendicular passing through the center of the arc is 0 degree. The angle A in a state where the line segment is located closer to the rotation center than the perpendicular is a plus angle, and the angle A in a state where the perpendicular is located closer to the rotation center than the line is a minus angle When the angle A is not more than 0 °, the ends of outer side with respect to the rotation center of the circular arc is a drug dividing device, characterized in that there is a longitudinally extending portion extended linearly.

Also in this embodiment, the “inner inner wall B of the groove” is eliminated. As for the cross-sectional shape of the annular groove employed in this embodiment, only the “outer inner wall C of the groove” exists and there is no “inner inner wall B of the groove”. In this embodiment, the “outer inner wall C of the groove” is made large. In the medicine dividing device according to this aspect, since there is a longitudinally extending portion in which the outer end is linearly extended with respect to the rotation center of the arc, the medicine can be moved outward with respect to the rotation center.
In the medicine dividing device of this aspect, the angle A is 0 degrees or less and there is no “inner inner wall B of the groove”. It can be said that the shape is easy to spill.
Therefore, when the medicine is supplied from the medicine supply means to the divided disk, it is desirable to bring the medicine to the “outer inner wall C of the groove” so that the medicine does not fall out. This aspect meets this requirement, and since there is a longitudinally extending portion in which the outer end is linearly extended with respect to the rotation center of the arc, the drug can be moved outward with respect to the rotation center. .

In another aspect of the present invention, there are provided a divided disk having an annular groove centered on the rotation center and rotating about the rotation center by power, a drug supply means for supplying a drug to the annular groove of the divided disk, and the annular In the drug dividing device, which has a drug scraping means for scraping the drug from the groove and scrapes the drug supplied to the annular groove by the drug scraping means from the annular groove to the rotation center side, the cross-sectional shape of the annular groove is Reference is based on a state in which the part A or the whole is an arc, and the angle A formed by the line segment connecting the center of the arc and the end of the arc on the rotation center side and the perpendicular passing through the center of the arc is 0 degree. The angle A in a state where the line segment is located closer to the rotation center than the perpendicular is a plus angle, and the angle A in a state where the perpendicular is located closer to the rotation center than the line is a minus angle When the angle A is less than 20 degrees, the drug scraping means includes a disc portion having a shape that matches the arc of the annular groove, the scrape member protruding from the circular plate portion, the The disc portion is a medicine dividing device characterized by rotating around its center and moving inwardly surrounded by the annular groove .

  According to this aspect, the disk portion not only rotates but also has a horizontal component and can move “inside the divided disk”. Therefore, the medicine in the annular groove can be completely discharged.

When the radius of the divided disk is r (m) and the angular velocity of the divided disk is ω (omega), it is desirable that rω ² (Aromega square) satisfies the following equation.
16.8 ≧ rω ² ≧ 4.2

  Here, the radius r (m) of the divided disk is assumed to be from the center of rotation of the divided disk to “the center O of the arc of the groove”. According to this aspect, the angular velocity when the divided disk rotates is high, and the medicine can be brought close to the “outer inner wall C of the groove”.

In another aspect of the present invention, there are provided a divided disk having an annular groove centered on the rotation center and rotating about the rotation center by power, a drug supply means for supplying a drug to the annular groove of the divided disk, and the annular In the drug dividing device, which has a drug scraping means for scraping the drug from the groove and scrapes the drug supplied to the annular groove by the drug scraping means from the annular groove to the rotation center side, the cross-sectional shape of the annular groove is Reference is based on a state in which the part A or the whole is an arc, and the angle A formed by the line segment connecting the center of the arc and the end of the arc on the rotation center side and the perpendicular passing through the center of the arc is 0 degree. The angle A in a state where the line segment is located closer to the rotation center than the perpendicular is a plus angle, and the angle A in a state where the perpendicular is located closer to the rotation center than the line is a minus angle When the angle A is less than 20 degrees, a hopper drug scraped from the split disk is turned, has a lid member covering an upper portion of the split disk, the lid member is a center side of the split disc There are a body part to cover and a hanging plate part hanging from the body part, the upper end of the hanging plate part is in the vicinity of the rotation center side end part of the annular groove, and the lower end of the hanging plate part is inserted into the hopper Or a medicine dividing device characterized in that it constitutes a part of a hopper .

  According to this aspect, all of the medicine discharged from the divided disk can be put into the hopper, and there are few cases where the medicine is zeroed out elsewhere. Moreover, the effect which suppresses scattering of a chemical | medical agent can also be anticipated.

  The drug dividing device of the present invention has the advantage of the internal scraping type, and has an effect of suppressing the scattering of the drug when the drug is divided.

It is a conceptual diagram of the chemical | medical agent division | segmentation apparatus of embodiment of this invention, (a) is the top view, (b) is the front view. It is an expanded sectional view of the annular groove of the division disk of the chemical | medical agent division apparatus of FIG. (A) thru | or (d) is explanatory drawing which shows the behavior at the time of scraping out powder from an annular groove using the chemical | medical agent division apparatus of FIG. It is a conceptual diagram of the chemical | medical agent division | segmentation apparatus of other embodiment of this invention. It is an expanded sectional view of the annular groove of the division disk of the chemical | medical agent division apparatus of FIG. (A) thru | or (d) is explanatory drawing which shows the behavior at the time of scraping out powder from an annular groove using the chemical | medical agent division apparatus of FIG. It is a conceptual diagram of the chemical | medical agent division | segmentation apparatus of other embodiment of this invention. It is a perspective view of the lid member of the medicine division device of FIG. (A) (b) is an expanded sectional view of the annular groove of the medicine splitting device of further another embodiment of the present invention. It is a conceptual diagram of the powder medicine packaging apparatus disclosed by patent document 1. FIG. It is a front view of the medicine division device indicated by patent documents 1. It is an expanded sectional view of the annular groove of the division disk of the chemical | medical agent division apparatus of FIG. (A) thru | or (d) is explanatory drawing which shows the behavior at the time of scraping out a powder from an annular groove using the chemical | medical agent division | segmentation apparatus of FIG.

Embodiments of the present invention will be further described below.
The medicine dividing device 1 of the present embodiment has a divided disk 2, and a medicine feeder (medicine supply means) 3 and a cleaning device 5 are provided around it.
Further, the divided disk 2 has a large opening 6 at the center, and a turntable 7 and a medicine scraping means 8 are provided in the opening 6.
In the present embodiment, there is a medicine packaging device (not shown) under the divided disk 2, and a packaging hopper 16 for feeding the medicine into the medicine packaging device is provided in the opening 6 of the divided disk 2.

The split disk 2 has an annular groove 10 as in the prior art. The lower part of the divided disk 2 is supported by guide rollers 30 and 31. Therefore, the divided disk 2 can rotate around the center thereof. Further, a guard motor 32 is engaged with the divided disk 2 and is rotated by the power of the guard motor 32.
The shape of the annular groove 10 will be described later.

In the present embodiment, the medicine feeder (medicine supply means) 3 includes a medicine container 12 and a container placement device 15.
The medicine container 12 is a sealed container, and a predetermined powder is filled inside. A large number of medicine containers 12 are housed in a housing portion (not shown), and are filled with different powders. The medicine container 12 has an iron plate 13 attached to the top thereof.
The drug container 12 has a lid 20 at the tip, and a part of the tip can be opened by opening the lid 20.

The container mounting device 15 has a vibration means (not shown) and a container holding means.
Then, the medicine container 12 is held by the container holding means, and in this state, the vibration means is operated to vibrate the medicine container 12 so that the powder can be discharged from the medicine container 12 little by little. The container mounting device 15 includes a weight measuring unit (not shown) and can monitor the weight of the drug container 12.
In this embodiment, the medicine container 12 and the container placement device 15 are separate, and when the powder medicine is packaged, they are combined to constitute the medicine feeder 3.

That is, the container mounting device 15 is fixed in the vicinity of the divided disk 2. More specifically, the container mounting device 15 is fixed “on the outside of the divided disk”.
On the other hand, as described above, a large number of drug containers 12 are stored in a storage unit (not shown) in a state in which different powders are filled.
And according to a doctor's prescription, the specific chemical | medical agent container 12 is carried out from an accommodating part with a robot etc., and is installed in the container mounting apparatus 15. FIG.
When dividing the medicine, with the lid 20 of the medicine container 12 open, the vibration means of the container mounting device 15 is operated to discharge the powder from the medicine container 12 little by little, and the annular groove of the divided disk 2 10 drops the drug.
Before and after the start of vibration, the weight of the medicine container 12 is monitored, and when a predetermined amount of medicine is discharged from the medicine container 12, the vibration means is stopped to stop discharging the medicine.
That is, the original weight G of the drug container 12 immediately after installation in the container mounting device 15 is compared with the current weight g, and the total amount H (G minus g) of the powder is always calculated. When the total amount H of the powder drops reaches a desired weight, the vibration of the container mounting device 15 is stopped.

  The turntable 7 is a circular plate, and gear teeth are carved on the outer periphery thereof. The turntable 7 is rotatably supported by a guide (not shown). Further, a geared motor 35 is provided in the vicinity of the turntable 7, and a gear provided on the geared motor 35 is engaged with a gear tooth provided on the turntable 7. Therefore, when the guard motor 35 is rotated, the turntable 7 is rotated.

As shown in FIG. 1, the drug scraping means 8 has a scraping arm 36 and a scraping mechanism 37 provided at the tip of the scraping arm 36.
The scraping mechanism 37 is a member having a scraping plate (disk portion) 40 and a scraping member 41. The scraping plate (disk portion) 40 is a disk made of a thin plate, and the outer periphery thereof coincides with the annular groove 10 of the divided disk 2.
A sliding member (not shown) made of silicon rubber or the like is attached to a portion of the scraping mechanism 37 that contacts the annular groove 10 of the divided disk 2. The sliding member is provided for the purpose of improving the sliding between the annular groove 10 of the divided disk 2 and the scraping mechanism 37 and for the purpose of eliminating the scraping residue of the powder by bringing them into close contact with each other.
Specifically, the sliding member is attached to the peripheral end portion of the scraping plate (disk portion) 40 and the portion of the scraping member 41 that contacts the annular groove 10.

  The scraping member 41 is provided on one planar portion of the scraping plate (disk portion) 40 and protrudes from the planar portion. The scraping member 41 has a length in the radial direction of the scraping plate (disk portion) 40, and the tip thereof reaches the outer peripheral portion of the scraping plate (disk portion) 40.

In the medicine scraping means 8, the driving device 45 is disposed on the turntable 7, and the scraping arm 36 projects in a cantilevered manner from the turntable 7 side.
The driving device 45 has a function of swinging the scraping arm 36 of the drug scraping means 8 to raise and lower the scraping mechanism 37 and a function of rotating the scraping plate (disk part) 40 of the scraping member 41. I have.

The cleaning device 5 has a cleaning brush 46, and the cleaning brush 46 can be rotated by a motor (not shown).
The cleaning device 5 is fixed in the vicinity of the divided disk 2. More specifically, the cleaning device 5 is fixed to “the outside of the divided disk”.

Next, a rough operation of the medicine dividing apparatus 1 will be described.
In the medicine dividing apparatus 1 of the present embodiment, as described above, the specific medicine container 12 is carried out of the storage unit by a robot or the like and is set on the container mounting device 15.
And the container mounting apparatus 15 is vibrated. As a result, the powder in the drug container 12 moves slowly, is discharged from the drug container 12 and falls into the annular groove 10 of the divided disk 2.
Further, the divided disk 2 is rotated before and after the start of vibration.

Here, in this embodiment, the divided disk 2 is rotated faster than in the past. More specifically, when the radius of the divided disk 2 is r and the angular velocity of the divided disk 2 is ω, the disk is rotated so as to satisfy the following expression. The basis for calculating the numerical value of the formula will be described later.
rω ² ≧ 4.2

More preferably, the rotation is performed so as to satisfy the following expression.
rω ² ≧ 7.5

However, for the purpose of preventing danger and preventing the scattering of the medicine, the angular velocity ω is preferably within a range satisfying the following expression.
rω ² ≦ 16.8

  Before and after the start of vibration, the weight of the drug container 12 is measured. When the total amount H of the powder drops reaches a desired weight, the vibration of the container mounting device 15 is stopped.

Thereafter, the rotation of the divided disk 2 is stopped. Then, the driving device 45 of the medicine scraping means 8 is made to function, the scraping arm 36 is swung, the tip side is lowered, the scraping mechanism 37 is lowered, and the scraping mechanism 37 is placed in the annular groove 10 of the divided disk 2. Put in.
Then, the divided disk 2 is rotated by an angle corresponding to the distribution number, and the medicine is scraped up in front of the scraping plate (disk portion) 40. Thereafter, the scraping plate (disk portion) 40 is rotated, the medicine is scooped up by the scraping member 41 and discharged from the divided disk 2 to the “inside of the divided disk”, and a large opening at the center of the divided disk 2 The medicine is taken out to 6 and the medicine is put into the packaging hopper 16.
The medicine put into the packaging hopper 16 drops the packaging hopper 16, is carried to the medicine packaging device, and is packaged.
This operation is sequentially repeated to discharge all the medicines in the divided disk 2, and each is packed by a medicine packaging device.

When all the medicines in the divided disk 2 have been discharged, the scraping arm 36 is swung to raise the tip side to raise the scraping mechanism 37, and the scraping mechanism 37 is taken out from the annular groove 10 of the divided disk 2.
Then, the turntable 7 is rotated to move the scraping mechanism 37 to the position of the cleaning device 5, and the scraping mechanism 37 is cleaned with the cleaning brush 46.

Next, a configuration unique to this embodiment will be described. In the medicine dividing device 1 of the present embodiment, the cross-sectional shape of the annular groove 10 of the dividing disk 2 is different from that of the prior art.
The divided disk 2 of the present embodiment has an annular groove 10. The annular groove 10 has an annular shape in plan view, and its center coincides with the rotation center of the divided disk 2 itself.
The cross-sectional shape of the annular groove 10 is as shown in FIG. 2, and most of it has an arc shape.
The cross-sectional shape of the annular groove 10 is formed by a line segment OX connecting “the center O of the arc of the groove” and the terminal X on the rotation center side of the divided disk 2 of the arc, and a perpendicular OY passing through the center O of the arc. Angle A is 0 degrees. In the divided disk 2 of this embodiment, there is only “the outer inner wall C of the groove”, and there is no “inner inner wall B of the groove”. The arc tangent T at the end of the annular groove 10 “inside the split disk” is horizontal and has no vertical component.

In the present embodiment, the outer end of the annular groove 10 is a portion that intersects a horizontal line (horizontal auxiliary line) passing through “the center O of the arc of the groove”. Accordingly, in the present embodiment, the arc-shaped portion of the annular groove 10 has a 90-degree fan shape.
In the present embodiment, the outer end of the annular groove 10 is linearly extended to form a longitudinal extension 47.
In the present embodiment, the longitudinal extension 47 is a vertical wall.

Next, the characteristic function of the medicine dividing device 1 of the present embodiment will be described.
In the medicine dividing apparatus 1 of the present embodiment, the divided disk 2 is rotated while discharging the medicine from the medicine feeder (medicine supplying means) 3 and dropping the medicine into the annular groove 10 of the divided disk 2. The rotational speed of the divided disk 2 is faster than before. Therefore, the medicine receives a strong centrifugal force and is brought close to the “outer inner wall C of the groove”. Therefore, when the split disk 2 is rotating, the powder does not spill “inside the split disk”.
Moreover, in this embodiment, since there exists the longitudinal direction extension part 47, powdered medicine does not jump out "outside of a division disk".

Also in this embodiment, the scraping plate 40 is rotated, and the scraping member 41 scrapes the powder from the annular groove 10 of the divided disk 2. FIG. 3 shows the behavior of the scraping plate 40 and the powder at that time. That is, the scraping plate 40 rotates from the state where the scraping member 41 is outside the groove, and the scraping member 41 enters the groove as shown in FIG.
The scraping plate 40 further rotates as shown in FIG. 3B, and the scraping member 41 crawls the bottom of the groove to scrape the powder toward the center of the divided disk 2, and the divided disk as shown in FIG. 3C. The powder is discharged to the opening side inside 2.

  Here, in the divided disk 2 employed in the present embodiment, the arc tangent T at the end of the annular groove 10 is horizontal. Therefore, even if the scraping member 41 of the scraping plate 40 reaches the vicinity of the edge of the groove as shown in FIG. 3C, the scraping member 41 only pushes the powder in the horizontal direction, and the upward force is applied to the drug. Never give. Therefore, as shown in FIGS. 3C and 3D, the powdered powder moves horizontally and does not jump up.

  Further, in the present embodiment, the scraping member 41 only pushes out the powder in the horizontal direction, and there is no timing when the scraping member 41 is scraped upward as in the prior art. Therefore, in this embodiment, it will not be in the state which pushes up powder against gravity, and it is hard to generate | occur | produce scrapes of powder. In addition, the effect of extending the life of the scraping member 41 and the effect of gradually decreasing the rotational torque of the scraping member 41 can be expected.

That is, when the divided disk 930 of the prior art is used, the inclination (“groove”) from the “outside” end of the approximately 160-degree fan-shaped arc of the annular groove 931 to the perpendicular OY passing through the center O of the arc. The portion of the outer inner wall C ”) is inclined downward in the scraping direction of the powder. Therefore, when the powdered medicine accumulated in the portion is scraped by the scraping member 41, the powdered medicine is collected downward along the gravity according to the rotation of the scraping member 41.
However, during the period from the perpendicular line OY to the line segment OX (the portion of the “inner inner wall B of the groove”), the slope is inclined upward in the scraping direction of the powder. For this reason, the powder that passes through this space is pushed up against gravity, and when it is removed from the scraping member 41, it falls to the vertical OY side and remains scraped.
Further, since the powder is lifted during the period from the perpendicular line OY to the line segment OX (the portion of the “inner inner wall B of the groove”), a relatively large torque is required to rotate the scraping member 41.
Furthermore, since the part which discharges a powder is inclined upwards, there exists a possibility that the discharged powder flows around to the back surface side of the annular groove 931, and adheres to the back surface side of the annular groove 931.

On the other hand, in this embodiment, when scraping out the powder, there is no portion (the portion of the “inner inner wall B” of the groove) that is inclined upward in the powder scraping direction. Therefore, according to this embodiment, there is little unscratched residue of powder.
Further, when the configuration of the present embodiment is adopted, it is not necessary to lift the powder against the gravity, so that the torque required to rotate the scraping member 41 is sufficient. Therefore, the motor that rotates the scraping member 41 can be reduced in size.
The contact pressure between the sliding member (not shown) provided in the scraping mechanism 37 and the annular groove 10 may be smaller than that of the conventional one. Therefore, there is little abrasion of a sliding member and the effect of extending the lifetime of a sliding member can be anticipated.
Further, according to the configuration of the present embodiment, the powder discharged from the end of the annular groove 10 rarely wraps around the back side of the divided disk 2. Therefore, the powdered powder is less likely to adhere to the back side of the divided disk 2.

Next, another embodiment of the present invention will be described. In addition, about the same member as previous embodiment, the same number is attached | subjected and the overlapping description is abbreviate | omitted.
As shown in FIG. 4, in the medicine dividing device 43 of this embodiment, the scraping mechanism 37 of the medicine scraping means 8 also moves in the horizontal direction. That is, the driving device 45 swings the scraping arm 36 of the drug scraping means 8 to raise and lower the scraping mechanism 37 and rotates the scraping plate (disk portion) 40 of the scraping member 41. In addition, a function of moving the scraping mechanism 37 in the horizontal direction is provided.
More specifically, the driving device 45 includes a linear rail 51 and a roller 52, and linearly moves by a motor (not shown). As a result, the scraping mechanism 37 moves in the horizontal direction.

In addition, the cross-sectional shape of the annular groove 50 of the divided disk 53 employed in the present embodiment has an angle A of 0 degrees, and a horizontal extension 48 extending in the horizontal direction at the end on the rotation center side.
The cross-sectional shape of the annular groove 50 in the present embodiment is as shown in FIG. 5, and most of it has an arc shape.
Also in this embodiment, the arc-shaped portion of the annular groove 50 has a 90-degree fan shape. However, in the annular groove 50 employed in the present embodiment, the inner end of the arc-shaped portion is extended in the horizontal direction to form a horizontal extension portion 48.
Also in the present embodiment, an angle A formed by a line segment OX connecting “the center O of the arc of the groove” and the end X on the rotation center side of the arc segmented disk 53 and a perpendicular OY passing through the center O of the arc. Is 0 degrees. In addition, the arc tangent T at the end of the annular groove 50 “inside the divided disk” is horizontal and has no vertical component.

Next, the function of the medicine dividing device 43 of this embodiment will be described.
Also in the present embodiment, the scraping plate 40 is rotated, and the scraping member 41 scrapes out the powder from the annular groove 50 of the divided disk 53. FIG. 6 shows the behavior of the scraping plate 40 and the powder at that time. That is, the scraping plate 40 rotates from a state in which the scraping member 41 is outside the groove, and the scraping member 41 enters the groove as shown in FIG.
The scraping plate 40 further rotates, and as shown in FIG. 6 (b), the scraping member 41 crawls the bottom of the groove and scrapes the powder to the center of the divided disk 53, and the divided disk as shown in FIG. 6 (c). The powder is discharged to the opening side inside 53.
When the scraping member 41 reaches the end of the arc-shaped portion of the annular groove 50 as shown in FIG. 6C, the scraping plate 40 stops rotating and moves in the horizontal direction as shown in FIG. 6D. Then, the medicine is scraped and the medicine is put into the packaging hopper 16.
Also in this embodiment, the scraping member 41 only pushes out the medicine in the horizontal direction, and does not give upward force to the medicine. Therefore, as shown in FIG. 6 (d), the powder moves horizontally and does not jump up.

Next, still another embodiment of the present invention will be described with reference to FIG.
The drug dividing device 55 of this embodiment shown in FIG. 7 has a lid member 56 that covers the opening 6 of the divided disk 2. The lid member 56 is in the opening 6 of the divided disk 2 and is held by the turntable 7.
The lid member 56 includes a main body portion 57 that covers the center side of the divided disk and a hanging plate portion 58 that hangs down from the main body portion 57.
An opening 60 is formed in a part of the main body 57. The opening 60 is an opening through which the scraping arm 36 of the drug scraping means 8 is inserted. The opening 60 is preferably provided with a shutter for adjusting the opening according to the raising and lowering of the scraping arm 36.
The drooping plate portion 58 is in a portion immediately below the opening 60 and has a slightly curved plate shape.

In the medicine dividing device 55 of the present embodiment, the lid member 56 is mounted so as to cover the opening 6 of the divided disk 2. Therefore, it looks good and dust does not enter the machine part.
Further, the drooping plate portion 58 of the lid member 56 enters the packaging hopper 16 as shown in FIG.
Therefore, when the scraping plate 40 is rotated and the medicine is discharged from the divided disk 2, the discharged medicine surely enters the packaging hopper 16. Moreover, since the upper surface of the packaging hopper 16 is indirectly covered with the main body portion 57 of the lid member 56, an effect of preventing the scattering of the medicine can be expected.
In the present embodiment, the configuration in which the drooping plate portion 58 enters the hopper is illustrated, but the drooping plate portion 58 may constitute a part of the hopper.

Next, a formula that defines the desired range of ω for the radius r and the angular velocity of the divided disk 2 will be described.
The divided disk 2 employed in the present embodiment has a “groove inner wall B” that is extremely small compared to the conventional disk. Therefore, when the powder is dropped onto the divided disk 2, it is necessary to bring the powder to the “outer inner wall C of the groove”. In the present embodiment, as a measure for this, the divided disk 2 is rotated faster than before, and centrifugal force is applied to the powder to bring the powder to the “outer inner wall C of the groove”.
In the drug dividing apparatus which the present inventors are manufacturing and selling, the radius r of the divided disk 2 is 0.426 m (meter), and the rotation speed N is 23 r. p. m. It is.
When the mass of the powder is m (kilograms), the centrifugal force related to the powder is as follows.

Centrifugal force = mrω ²

Since the mass m is a value determined by the type of powder, it can be determined by the drug dividing device side. The value relating to the centrifugal force is “rω ² ” (R Omega square).
Substituting the radius r (0.426 m) and the rotation speed N (23 r.p.m.) into “rω ² ” is as follows.

rω ² = 2.47

However, ω = 2πN / 60
N: Number of rotations per minute

According to the experiments by the present inventors, the rotational speed N is 30 r. p. m. If it is about the extent, the powder gathered on the “outer inner wall C of the groove”, and there was little fear of spilling.
Substituting the radius r (0.426 m) and the rotation speed N (30 rpm) into the above equation is as follows.
rω ² = 4.2

The rotation speed N is 40 r. p. m. The powder was collected completely by the “outer inner wall C of the groove”, and the fear of spilling was even less. The radius r (0.426 m) and the rotation speed N (40 rpm) were added to the above formula. Substitution is as follows.
rω ² = 7.5

However, the rotational speed is 60 r. p. m. As a result, the powder sometimes jumped out from the “outer inner wall C of the groove”.
Substituting the radius r (0.426 m) and the rotation speed N (60 rpm) into the above equation is as follows.
rω ² = 16.8

From the above results, it can be said that it is desirable to satisfy the following equation, where r is the radius of the divided disk 2 and ω is the angular velocity of the divided disk 2.
rω ² ≧ 4.2

More preferably, the rotation is performed so as to satisfy the following expression.
rω ² ≧ 7.5

However, for the purpose of preventing danger and preventing the scattering of the medicine, the angular velocity ω is preferably within a range satisfying the following expression.
rω ² ≦ 16.8

Each of the annular grooves employed in the embodiment described above passes through the line segment OX connecting the “center O of the arc of the groove” and the end X on the rotation center side of the divided disk 2 of the arc, and the center O of the arc. The angle A formed by the perpendicular line OY is 0 degrees, but the present invention is not limited to this configuration.
For example, it may be a minus angle as shown in FIG. Further, as shown in FIG. 9B, the angle may be slightly positive. However, the angle A needs to be less than 20 degrees, desirably less than 10 degrees, and more desirably within a range of plus 5 degrees to minus 5 degrees.

1,43,55 Drug dividing device 2,53 Dividing disc 3 Drug feeder (medicine supply means)
6 opening 8 medicine scraping means 10, 50 annular groove 16 packaging hopper 36 scraping arm 37 scraping mechanism 40 scraping plate (disk portion)
41 scraping member 47 longitudinal extension 48 horizontal extension C outer inner wall of groove

Claims (5)

A split disk having an annular groove centered on the rotation center and rotating about the rotation center by power, a drug supply means for supplying a drug to the annular groove of the split disk, and a drug scraping that scrapes the drug from the annular groove A drug dividing device that scrapes the drug supplied to the annular groove by the drug scraping means from the annular groove toward the rotation center side,
The cross-sectional shape of the annular groove is a part or all of an arc, and an angle formed by a line segment connecting the center of the arc and the end of the arc on the rotation center side, and a perpendicular passing through the center of the arc. With reference to a state where A is 0 degree, the angle A in a state where the line segment is located closer to the rotation center than the perpendicular is a plus angle, and the perpendicular is located closer to the rotation center than the line. when the angle a in the state that the negative angle, the angle a is not more than 0 °, the agent which is characterized in that the end of the rotation center side of the circular arc is horizontal extension portion extended horizontally Splitting device. A split disk having an annular groove centered on the rotation center and rotating about the rotation center by power, a drug supply means for supplying a drug to the annular groove of the split disk, and a drug scraping that scrapes the drug from the annular groove A drug dividing device that scrapes the drug supplied to the annular groove by the drug scraping means from the annular groove toward the rotation center side,
The cross-sectional shape of the annular groove is a part or all of an arc, and an angle formed by a line segment connecting the center of the arc and the end of the arc on the rotation center side, and a perpendicular passing through the center of the arc. With reference to a state where A is 0 degree, the angle A in a state where the line segment is located closer to the rotation center than the perpendicular is a plus angle, and the perpendicular is located closer to the rotation center than the line. When the angle A in the state of being a negative angle is a negative angle, the angle A is 0 degrees or less, and there is a longitudinally extending portion in which an outer end is linearly extended with respect to the rotation center of the arc. A drug dividing device. A split disk having an annular groove centered on the rotation center and rotating about the rotation center by power, a drug supply means for supplying a drug to the annular groove of the split disk, and a drug scraping that scrapes the drug from the annular groove A drug dividing device that scrapes the drug supplied to the annular groove by the drug scraping means from the annular groove toward the rotation center side,
The cross-sectional shape of the annular groove is a part or all of an arc, and an angle formed by a line segment connecting the center of the arc and the end of the arc on the rotation center side, and a perpendicular passing through the center of the arc. With reference to a state where A is 0 degree, the angle A in a state where the line segment is located closer to the rotation center than the perpendicular is a plus angle, and the perpendicular is located closer to the rotation center than the line. when the angle a in the state that the negative angle, the angle a is less than 20 degrees, the drug scraping means includes a disc portion having a shape that matches the arc of the annular groove, from the disc portion A drug dividing device , comprising: a protruding scraping member, wherein the disk portion rotates about its center and moves inwardly surrounded by an annular groove . A split disk having an annular groove centered on the rotation center and rotating about the rotation center by power, a drug supply means for supplying a drug to the annular groove of the split disk, and a drug scraping that scrapes the drug from the annular groove A drug dividing device that scrapes the drug supplied to the annular groove by the drug scraping means from the annular groove toward the rotation center side,
The cross-sectional shape of the annular groove is a part or all of an arc, and an angle formed by a line segment connecting the center of the arc and the end of the arc on the rotation center side, and a perpendicular passing through the center of the arc. With reference to a state where A is 0 degree, the angle A in a state where the line segment is located closer to the rotation center than the perpendicular is a plus angle, and the perpendicular is located closer to the rotation center than the line. when the angle a in the state that the negative angle, the angle a is less than 20 degrees,
A hopper into which a medicine scraped from the divided disk is placed, a lid member that covers an upper part of the divided disk, the lid member covering a center side of the divided disk, and a hanging plate part that hangs down from the main body part The upper end of the drooping plate portion is in the vicinity of the end portion on the rotation center side of the annular groove, and the lower end of the drooping plate portion is inserted into the hopper or constitutes a part of the hopper. A drug dividing device characterized by the above. The drug dividing device according to any one of claims 1 to 4, wherein the following equation is satisfied when the radius of the divided disk is r (m) and the angular velocity of the divided disk is ω.
16.8 ≧ rω ² ≧ 4.2

Images