JP7406250B2 - Pharmaceutical packaging device - Google Patents

Description

The present invention relates to a drug packaging device that packages drugs such as powdered drugs into individual packages for each dose or for each predetermined amount of drug according to a prescription.

BACKGROUND ART In drug packaging devices that package drugs made of powder such as fine powder or granules into individual packages for each dose or for each predetermined amount of drug, a disk dividing method as disclosed in Patent Document 1 has been used for a long time. In this disk division method, the mass of one prescription (for example, one package is 1 g, 3 times a day x 14 days = 42 packages = 42 g) is manually weighed using an electronic balance. Then, by continuously dropping small amounts of this weighed drug onto the outer circumference of a rotating distribution disk using means such as vibration transport, a doughnut-shaped drug laminate is formed on the outer circumference of the disk. After this is completed, the donut-shaped drug is divided into individual packages (for example, 42 equal parts), and the packaging machines enclose them in wrapping paper.

In this disk division type packaging machine, the pharmacist manually weighs the mass of the drug using an electronic balance, but this is a nerve-wracking and time-consuming task. There is a need to automate this weighing operation, and as one method, an automatic weighing powder packaging machine as disclosed in Patent Document 2 has been put into practical use. In this example, the drug is weighed while being placed in a container in the device, and the weighed container is moved to the distribution disk section, and the drug is dropped from the container onto the distribution disk. Since this method requires an indirect container, a more efficient method that does not require an indirect container has been sought.

On the other hand, a technique has been considered that measures the actual amount of drug on the disk by installing an electronic balance that can weigh the mass of the distribution disk itself, dropping the drug onto the disk, and measuring the increment in mass. ing. With this technology, the total mass of the distribution disk, etc. can actually be known, so the mass of only the drug can be measured by subtracting the mass of the tare before dropping the drug, such as the distribution disk, from the total mass. . According to this technology, even if the drug present in the container is accurately measured as in Patent Document 2, when the drug is dropped from the container to the distribution disk and released, the drug may scatter into the air or the drug may Accurate drug weighing can be achieved without the risk of weight loss due to residual adhesion within the container.

FIGS. 7 and 8 schematically show the structure around a disk part, which is a main part of a disk weighing type drug packaging machine that weighs the mass of distribution disks and the like. FIG. 7 is a plan view thereof, and FIGS. 8(a) and 8(b) are front views thereof.
An electronic scale 103 is placed on a scale support stand 102 provided in a housing 101, and a disk support stand 105 is placed on a load point 104 above the electronic scale. A vertical drive shaft 106 is rotatably held substantially above the load point 104 of the disc support 105 by a holding portion 107 having a built-in bearing. A gear 108 is attached to this drive shaft 106 so that it can be rotationally driven by a stepping motor 110 via a gear 109. A distribution disk 113 having an outer circumferential ring 112 (arc-shaped concave surface) having a downwardly convex curved surface 111 is attached to the top of the drive shaft 106 concentrically with the drive shaft 106 .

An upper stand 114 is suspended from the upper part of the distribution disk 113 by a method not shown inside the outer circumferential ring 112, and a load is placed on the upper stand 114 so that the load of the upper stand 114 is not transmitted to the load point 104 of the electronic scale 103. Insulated. A vibration table 115 and a drug container 116 are mounted on the upper surface of the upper table 114 and are placed on the vibration table 115 and can release and drop the drug contained therein by vibration. By releasing and dropping the drug from the drug container 116 while the distribution disk 113 is being rotated, a donut-shaped laminated body Pa of the drug can be formed on the outer ring 112 of the distribution disk 113.

Similarly, a drug scraping device 118 is mounted on the upper table 114 and has a disk portion 117 having a diameter approximately equal to the curvature of the downwardly convex curved surface 111 of the outer circumferential ring 112 at its tip. When this disc part 117 is brought into contact with the downwardly convex curved surface 111 and the disc part 117 is rotated while rotating the stepping motor 110 by an angle corresponding to the number of indexes indicated in the prescription, the scraper attached to the disc part 117 is rotated. Member 119 releases a packet of medication into hopper 120 . The released drug is stored in a continuous packaging paper attached to a known packaging machine from the lower part of the hopper 120, and the paper is further sealed to complete a continuous package.

However, as shown in FIG. 8(b), the force application point 121 of the disk portion 117 of the drug scraping device 118 on the distribution disk 113 is largely offset from the load point 104 of the electronic scale 103. That is, the load point 104 is located at the center of the distribution disk 113, whereas the force application point 121 is located at the outer periphery of the distribution disk 113. The disk portion 117 then presses the outer peripheral portion of the distribution disk 113 downward. As a result, a downward couple is generated only on one end side of the disk support base 105 to which the distribution disk 113 is fixed. As a result, although the amount of deformation is shown in an enlarged manner in FIG. 8(b), the downward convex curved surface 111 of the distribution disk 113 actually sinks slightly.

This causes a deviation in the contact surface between the disc portion 117 and the downwardly convex curved surface 111. This is because the contact pressure between the disc part 117 and the downward convex curved surface 111 changes depending on the location, and when the disc part 117 is rotated in this state to scrape out the medicine, the medicine Pb is deposited on the surface of the outer ring 112. A so-called unscraped phenomenon may occur, in which some particles remain attached. This is because the drug left behind cannot be packed into individual packages, so not only will there be a shortage of drug by that mass, but additional work will have to be done to clean up the leftovers. It comes out.

Such a problem does not occur in the conventional disk dividing method, but is an inherent problem in the disk weighing method, and a solution to this problem is desired.

Japanese Patent Application Publication No. 2019-202801 JP 2020-5692 Publication

The problem to be solved by the present invention is to prevent a drug from adhering to and remaining on the outer circumferential ring (arc-shaped concave surface) of a dispensing disk in a disk weighing type drug dispensing device.

In order to solve the above-mentioned problems, the present invention provides a drug dispensing device that includes a distribution disk in which a continuous arcuate concave surface is formed on the upper surface in the outer circumferential direction, and a drug that is dispensed little by little onto the arcuate concave surface of the distribution disk. A medicine container to be dropped and supplied; a rotary drive section on which the distribution disk is placed and rotationally drives the distribution disk; a weighing section mounting table provided below the rotation drive section; a weighing section that measures the weight of the drug supplied from the drug container to the distribution disk by measuring the total weight of the disk and the rotation drive section; and a weighing section that rotates in contact with the arcuate concave surface of the distribution disk. a drug scraping device having a rotating plate, and releasing the drug one package at a time from the arcuate concave surface as the rotating plate rotates; and at least when the drug scraping device releases the drug, the distribution to the weighing unit mounting table. It has a movement regulating means for regulating the movement of the disk, and a packaging device for packaging the medicine scraped out by the medicine scraping device.

As described above, according to the present invention, since the movement regulating means for regulating the movement of the distribution disk is provided, the disk portion is distorted and moved by the force of the scraping device when scraping, and as a result, the medicine is left unscraped. A drug packaging device that is free from fear can be provided.

FIG. 1 is a plan view of a disk weighing type medicine packaging machine according to a first embodiment. FIG. 1 is a front view of the disc weighing type medicine packaging machine according to the first embodiment. The front view and the side view of the disk part of the scraping device of the disk weighing type drug packaging machine according to the first embodiment. FIG. 2 is a front view of the fixing device of the disk weighing type medicine packaging machine according to the first embodiment. FIG. 7 is a front view of a modification of the fixing device of the disk weighing type drug packaging machine according to the first embodiment. FIG. 7 is a front view of a disc weighing type medicine packaging machine according to a second embodiment. It is a top view of a disk weighing device. It is a front view of a disk weighing device.

Hereinafter, a disk weighing type drug packaging machine according to an embodiment will be described using the drawings. The drugs to which this embodiment is applied include all drugs whose prescribed amount is expressed in mass units, including powders from powders to granules. Figure 1 shows a disc weighing type drug packaging machine according to this embodiment 2 is a front view of the disk weighing type drug packaging machine according to the present embodiment, and FIG. 3 is a front view and a side view of the disk part of the scraping device of the disk weighing type drug packaging machine according to the present embodiment, FIG. 4 is a front view of the fixing device of the disk weighing type drug packaging machine according to the present embodiment.

The disc weighing type drug packaging machine 1 according to the present embodiment has a packaging machine 3 provided at the lower part of the housing 2, and two disc distribution devices 5a and 5b on the intermediate stand 4 (weighing unit mounting stand). They are arranged on the left and right. Furthermore, a hopper 6 is provided for dropping and introducing the distributed medicine from the disk distribution devices 5a, 5b into the packaging machine 3. The medicine falling from the falling hopper 6 is stored between the packets B folded in half on the lower side.
For example, by using a known disk distribution technique as shown in Patent Document 1, medicines placed on disks can be packaged into a specified number of individual packages.

The two disk distribution devices 5a and 5b have a nearly symmetrical structure and use the same components and devices, and although the numbers a and b are not distinguished from each other, they are the same components and devices. The device is used with both disk distribution devices 5a and 5b. Both of the disk distribution devices 5a and 5b are capable of performing "circumferential sowing" and "distribution" which are the basic functions of this device, and when one is performing "circular sowing", the other is Execute "allocation". This alternate execution increases work efficiency. Note that in this embodiment, the two disk distribution devices 5a and 5b are not essential, and even just one disk distribution device 5a can perform the same function functionally, making the device more compact.・Since the price is low, it is very useful for small pharmacies, etc.

An electronic scale 7 constituting a weighing section is placed on an intermediate stand 4 provided in the casing 2, and a disk support stand 9 (base part) is placed at a load point 8 on the upper part. A vertical drive shaft 10 is rotatably held substantially above the load point 8 of the disc support 9 by a holding portion 11 having a built-in bearing. A gear 12 is attached to this drive shaft 10 so that it can be rotationally driven by an M1 stepping motor 14 via a gear 13. Further, at the top of the drive shaft 10, a distribution disk 17 having an outer circumferential ring 16 (arc-shaped concave surface) having a downwardly convex curved surface 15 is attached concentrically with the drive shaft 10. That is, this distribution disk 17 has a continuous arcuate concave surface formed on its upper surface in the outer circumferential direction.

The electronic scale here does not directly indicate the amount of mechanical spring deformation as a mass value, but rather obtains the mass value by measuring the minute amount of deformation by changing the circuit resistance value using a resistance wire strain gauge. Furthermore, there is also a device that similarly compensates for the amount of deformation using electromagnetic force and obtains a mass value from the change in electromagnetic force. In this way, in recent years, the measurement resolution for large masses has greatly improved, making it possible to detect, for example, even if several tens of milligrams of drug falls onto a disk distribution device weighing several kilograms, including the M1 stepping motor. Therefore, the disk weighing method was realized.

Further, the driving of the distribution disk is not limited to gear driving, but may be timing belt driving.

An upper stand 18 is attached to the upper part of the distribution disk 17 inside its outer ring 16 and suspended from the upper part by a hanging member 19 from the upper part of the housing 2 . Therefore, the load of the upper stand 18 is insulated so that it is not transmitted to the load point 8 of the electronic scale 7. Further, on the upper surface of the upper table 18, a vibrating table 20 and a drug container 21 that is removably placed on the vibrating table 20 are provided. When the vibration table 20 vibrates with the medicine container 21 containing a medicine placed on the vibration table 20, the medicine contained in the medicine container 21 is released little by little and falls. When the drug is discharged from the drug container 21 while the distribution disk 17 is rotated by the M1 stepping motor 14, a donut-shaped stack P of the drug can be formed on the outer ring 16 of the distribution disk 17.

The drug containers 21 contain individual drugs, and are stored on a shelf (not shown) or the like. When a drug is specified in a prescription, the drug container 21 containing the drug is manually placed on the vibrating table 20 as indicated by an arrow 22. Automating the attachment, detachment and transfer of the drug container 21 using a robot transfer device as described in Patent Document 2, for example, achieves higher work efficiency.

Similarly, a drug scraping device 24 is mounted on the upper table 18 and has a disk portion 23 having a curvature approximately equal to the curvature of the downwardly convex curved surface 15 of the outer circumferential ring 16 at its tip. When this disk portion 23 is brought into contact with the downward convex curved surface 15 and the disk portion 23 is rotated while rotating the M1 stepping motor 14 by an angle corresponding to the number of indexes indicated in the prescription, the disk portion 23 is attached to the disk portion 23. One package of medicine is discharged into the hopper 6 by the scraping member 25 (see FIG. 3). The medicine released into the hopper 6 is stored in a continuous packaging paper B that is attached to a known packaging machine 3 from the bottom of the hopper 6. Further, by sealing the continuous packaging paper B with the vertical sealing device 26 and the horizontal sealing device 27, continuous individual packages can be completed.

This drug scraping device 24 has an arm 28 rotatably attached to the upper table 18 at one end via a shaft 29. A disk portion 23 is rotatably attached to the other end of the arm body 28. The arm body 28 is rotated by the vertical movement of the linear actuator 30, and moves the disc portion 23 up and down. The upper and lower positions of the disc portion 23 correspond to two modes of action of the drug scraping device 24. That is, the disk distribution device 5b (right side) in FIG. 2 shows the "disk distribution" state, and the disk distribution device 5a (left side) shows the "distribution" state.

During "disk spreading", the linear actuator 30 is driven upward. As a result, the arm body 28 resists the biasing force of the spring 31 and maintains the disk portion 23 in a state separated from the outer circumferential ring 16 of the distribution disk 17. In this state, the drug is discharged from the drug container 21 while the distribution disk 17 is rotated by the M1 pulse motor 14 to form a doughnut-shaped stack P of drugs on the outer ring 16 of the distribution disk 17. Furthermore, during "distribution", the linear actuator 30 is driven downward in order to bring the disk portion 23 into contact with the outer circumferential ring 16 as shown on the left side of FIG. At this time, the urging force R of the disc part 23 on the outer circumferential ring 16 is due to the own weight of the disc part 23 and the tensile force of the spring 31.

Furthermore, as shown in FIG. 3, the disk portion 23 is provided with a press-contact disk 33, a center hub 34, and a partition plate 35 coaxially with respect to the center axis 32. The scraping members 25 extend radially from the center hub 34 with their side surfaces in contact with the press-contact disc 33 and the partition plate 35, and are provided in two positions 180 degrees apart from each other. The partition plate 35 is not a circular plate, but has an elongated shape extending from one outer circumference to the other outer circumference with the same width as the central hub 34 at the position where the scraping member 25 is provided. Further, a scraping rubber material 37 is provided at the tip of the scraping member 25. Furthermore, an M2 stepping motor 32a directly connected to the central shaft 32 is attached to the disc portion 23. Then, when the M2 stepping motor 32a is driven to rotate the disc part 23 by 180 degrees with the disc part 23 in contact with the outer circumferential ring 16, there is a The drug is scraped out by the scraping rubber material 37 and released into the hopper 6.

Further, a circumferential rubber material 36 having relatively high hardness and high wear resistance is wrapped around the entire outer periphery of the press-contact disc 33. By making the diameter of this circumferential rubber material 36 match the curvature of the downwardly convex curved surface 15 of the outer circumferential ring 16, the outer circumferential ring 16 and the press-contact disk 33 are brought into close contact with each other, and no gap is generated. In this way, it is possible to prevent the medicine from being left behind, and the slight mechanical dimensional difference is maintained by elastic deformation of the circumferential rubber material 36.

The scraping rubber material 37 provided at the end of the scraping member 25 is made of a material having a lower hardness than the circumferential rubber material 36 on the outer periphery of the pressure contact disk 33. Further, as shown in FIG. 3(a), the scraped rubber material 37 is made to protrude slightly by a dimension G1 from the diameter of the circumferential rubber material 36 on the outer periphery of the pressure contact disk 33. This is because the three-dimensional cylindrical shape of the outer circumferential ring 16 and the two-dimensional cylinder of the disk portion 23 cannot strictly adhere to each other, but due to the relatively large elastic deformation of the scraped rubber material 37, the outer circumferential ring This is to maintain close contact between the rubber material 16 and the scraped rubber material 37. Furthermore, the radius of the partition plate 35 is made smaller by the dimension G2 than the rubber material 36 on the outer periphery of the press-contact disk 33, as shown in FIG. 3(a).

As mentioned above, the dimensional relationship of the disc part 23 is extremely important to prevent the medicine from being left behind due to the generation of gaps between the various parts, so it is recommended that the circumferential rubber material 36 and the scraped rubber material 37 be made replaceable when they wear out. suitable. Similarly, it is important to maintain the biasing force R on the outer circumferential ring 16, and in this embodiment, this is maintained by the weight of the disk portion 23 and the tensile force of the spring 31. Note that it is also possible to maintain the biasing force R more precisely by providing a separate weight mechanism and adjusting the mass of the weight. Furthermore, it is also preferable to use a force-controllable motor such as a servo motor in place of the spring 31 as a means for rotating the arm body 28, so that the biasing force R can be controlled more precisely. Also, a considerable function can be achieved by rotating the cylindrical cam with a motor instead of the linear actuator 30.

The configuration of the upper stand 18 side for maintaining the biasing force R of the disk portion 23 on the outer circumferential ring 16 and the close contact has been described in detail above. Maintaining the rigidity of the disc support base 9 that receives the couple is also an important issue. That is, if one side of the disk support base 9 is deformed downward by the biasing force R, the close contact between the outer ring 16 and the disk portion 23 will be slightly shifted, leading to the drug being left behind. It is.

Correspondingly, as shown in FIG. 2, support fixing devices 38a and 38b (fixing means) are disposed facing each other on both sides of the disk support stands 9 of the two disk distribution devices 5a and 5b. ing. As shown in FIG. 4, a vertical engagement arm 41 is rotatably attached to a shaft 40 fixed to a holding table 39 attached to the intermediate table 4 (weighing unit mounting table). An arcuate engaging element 42 is formed on the upper part of the engaging arm 41, and a concave cam groove 43 is formed on the lower end side.

A cylindrical cam 46 directly connected to a rotating shaft 45 of an M3 motor 44 attached to the holding base 39 is attached to the cam groove 43 in contact with the cam groove 43 . When the M3 motor 44 is rotated 180 degrees, the cylindrical cam 46 moves from the top dead center to the bottom dead center with respect to the cam groove 43, so that the upper engager 42 can swing from side to side. Note that in FIG. 4(b), the intermediate stand 4 and the holding stand 39 are omitted.

V-shaped grooves 47 are formed on the left and right sides of the disk support base 9 (only one V-groove is shown in FIG. 4), and the cylindrical cam 46 comes to the top dead center as shown in FIG. 4(a). Then, the engaging element 42 engages with the V-shaped groove 47 of the disk support base 9. By performing this engagement operation with the left and right support fixing devices 38a and 38b, the disk support 9 is fixed with respect to the intermediate stand 4 while being restricted from moving in the vertical direction. As a result, the position of the outer circumferential ring 16 of the distribution disk 17 will not fluctuate due to external forces such as the biasing force R mentioned above. Therefore, no gap is created between the outer circumferential ring 16 and the disk portion 23, and no drug is left behind.

Further, when the cylindrical cam 46 reaches the bottom dead center as shown in FIG. 4(b), the engagement element 42 is disengaged from the V-shaped groove 47 of the disk support base 9. Therefore, the entire load on the disk support stand 9 is concentrated on the load point 8 of the electronic scale 7, so that the mass of the distribution disk portion 17, etc. can be accurately weighed.

For the fixing operation of the fixing device of the disk support stand 9, in addition to the engagement method using a cam as described above, the engaging element may be operated by a linear actuator, or the disk support stand 9 may be operated separately. Another modification is to use something like a vise to hold it in place from the left and right.

The operation of the disk weighing type drug packaging device configured as above will be explained. This action is executed in two stages: "disk scattering" and "distribution" by a program not shown. At the time of "disk spreading", the engaging members 42 of the left and right support fixing devices 38a, 38b are held in the position shown in FIG. 4(b) and the engagement is released. Then, the drug is sprinkled on the outer ring 16 of the distribution disk 17 while measuring the weight of the distribution disk 17. Further, during "distribution", the engaging element 42 is held in the position shown in FIG. 4(a) and engaged, thereby controlling the movement of the disk support base 9.

The fixing operation of the support platform fixing device is not only done during operation, but also when the main unit is being transported, to prevent unnecessary external force from being applied to the electronic scale due to vibration during transportation and damage. It can also be prevented.

FIG. 5 is a front view of a modification of the support fixing device. In order to insulate the electronic scale 7 from vibration, an electronic scale stand 48 is placed on the intermediate stand 4 via vibration isolators 49a and 49b. In this case, as shown in FIG. 5(a), the deformation of the lower structure due to the urging force R of the disk portion 23 on the outer ring 16 causes the vibration isolating material 49b to sink, so that the electronic scale 48 as a whole deforms. Resulting in.

In the case of such a structure, if the support table fixing device 38 is attached to the electronic scale table 48, the support table fixing device 38 will also deform integrally. However, by attaching the support base fixing device 38 to the intermediate base 4 as shown in FIG. 5(b), the vibration isolating material 49b will not sink due to the biasing force R of the disc portion 23 on the outer circumferential ring 16. No deformation occurs.

In the first embodiment, the scraping device 24 is supported by the upper support base 18 so as not to apply a load to the load point 8 of the scale 7. When the drug is scraped out by the rotating plate 23 of the scraping device 24, movement of the distribution disk 17 with respect to the intermediate stand 4, which is a weighing unit mounting stand, is restricted. In the second embodiment, as shown in FIG. 6, the scraping device 24 itself is fixed to a disk support 9 placed on a load point 8 of a scale 7 constituting a weighing section.

In order to realize the above, components equivalent to those in FIGS. 1 and 2 are given the same numbers in FIG. There is. A disk support stand 9 (base part) is placed at a load point 8 on the top of the electronic scale 7. A vertical fixed shaft 10a is fixed substantially above the load point 8 of the disc support 9 by a holding portion 11a. A gear 12a is attached to the fixed shaft 10a via a bearing 12b, and can be rotationally driven by an M1 stepping motor 14 via a gear 13. Further, a distribution disk 17 having an outer circumferential ring 16 (arc-shaped concave surface) having a downwardly convex curved surface 15 is attached to the gear 12a concentrically with the fixed shaft 10a. That is, the gear 12a and the distribution disk 17 are rotatably attached to the fixed shaft 10a. Further, an upper stand 18 is attached to the upper end of the fixed shaft 10a, and a scraping device 24 is attached to this upper stand 18. Further, the vibration table 20 and the medicine container 21 are attached by being suspended from the upper part of a casing (not shown) by a hanging member 19. By doing so, the distribution disk 17 can be rotatably mounted on one central axis, and the upper stand 18 can be fixedly mounted without rotating.

With this configuration, the distribution disk 17 and the scraping device 24 are fixed to the same disk support base 9, so even if the distribution disk 17 is pushed by the rotary plate 23 of the scraping device 24, the distribution disk 17 will not move. There is no. That is, supporting the scraping device 24 and the distribution disk 17 with the same support itself constitutes a movement restricting means.

Therefore, it is possible to reduce the amount of medicine left behind on the outer circumferential ring 16 of the distribution disk 17.
In addition, with this structure, the mass applied to the load point 8 of the electronic scale 7 is added to the mass of the scraping device 24 on the upper support base 18, so the scale needs to be capable of measuring a large mass.

As described in detail above, the present invention makes it possible to restrict the movement of the distribution disk due to the biasing force of the disk portion during "distribution", which is an inherent problem of the disk weighing system, and which has been desired to be solved. It is possible to significantly reduce the amount of chemicals left behind. Moreover, it can be realized with a relatively simple mechanism, and this can prevent the reduction in the amount of drug per package, which is the most important factor in drug packaging, and can improve the reliability of dispensing operations. . This further improves the reliability of the disk weighing type drug packaging machine, which was created to improve the accuracy of the weight of drugs contained in divided individual packages. Furthermore, as a result, the amount of drug left on the distribution disk is reduced, and the device for removing and cleaning it can also be simplified.

Although some embodiments and modifications of the present invention have been described, these embodiments and modifications are presented as examples and are not intended to limit the scope of the invention. These novel embodiments and modifications can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the gist of the invention. These embodiments and their modifications are included within the scope and gist of the invention, as well as within the scope of the invention described in the claims and its equivalents.

1 Disc weighing type drug packaging machine (drug packaging device)
3 Packaging machine 4 Intermediate stand (weighing unit mounting stand)
5 Disk distribution device 6 Hopper 7 Electronic scale (weighing section)
9 Disc support stand (base part)
14 M1 stepping motor (rotation drive unit)
16 Outer circumference ring (arc-shaped concave surface)
17 Distribution disc 21 Drug container 23 Disk portion 24 Drug scraping device 25 Scraping member 38 Support table fixing device (movement restriction means)

Claims (5)

a distribution disk having a continuous arc-shaped concave surface formed on the upper surface in the outer circumferential direction;
a drug container that drops and supplies the drug little by little onto the arc-shaped concave surface of the distribution disk;
a rotational drive unit on which the distribution disk is placed and rotationally drives the distribution disk;
The weight of the drug supplied from the drug container to the distribution disc is placed on a weighing unit mounting table provided below the rotary drive unit, and the total weight of the distribution disc and the rotation drive unit is measured. a weighing section for measuring;
a drug scraping device having a rotary plate that rotates in contact with the arcuate concave surface of the distribution disk, and releases the drug one package at a time from the arcuate concave surface as the rotary plate rotates;
Movement regulating means for regulating movement of the distribution disk with respect to the weighing unit mounting table at least when the drug scraping device releases the drug;
a packaging device for packaging the medicine scraped out by the medicine scraping device;
A drug packaging device with The distribution disk and the rotation drive unit are placed on a platform provided on a load point of a scale constituting the weighing unit,
The drug scraping device is supported at a position that does not apply the load to a load point of the scale,
The movement regulating means includes a fixing means for fixing the platform to the weighing unit mounting table when the drug scraping device releases the drug.
The drug packaging device according to claim 1. The fixing means of the movement regulating means releases the fixation of the platform when the drug is supplied from the drug container to the distribution disk, and fixes the platform to the weighing unit mounting table when scraping out the drug.
The drug packaging device according to claim 2. A scale constituting the weighing section is placed on the weighing section mounting table via a vibration isolating material.
The drug packaging device according to any one of claims 1 to 3. The distribution disk and the rotation drive unit are provided on a platform placed on a load point of a scale forming the weighing unit,
The movement restricting means restricts movement of the distribution disk with respect to the weighing unit mounting table by supporting the drug scraping device on the stand.
The drug packaging device according to claim 1.