JPH0464926B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Industrial Application Field The present invention relates to an automatic powder medicine packaging machine.

(B) Prior Art Conventionally, as an example of an automatic powder medicine packaging machine, there is one described in Japanese Unexamined Patent Publication No. 59-26403.

In such an automatic powder medicine packaging machine, an electronic scale moves directly below a powder medicine feeder that stores powder medicines for each type, and the powder medicines weighed with the same scale are fed into a powder medicine distribution feeder equipped with a packaging machine. I try to divide it into packages after allocating it every minute.

(c) Problems to be Solved by the Invention However, the above automatic powder medicine packaging machine has the following problems.

In other words, when powders weighed with an electronic scale are put into a feeder for distributing powders with a packaging machine, the powders may remain on the weighing pan, and even powders that have been accurately weighed may not be distributed or packaged. This will result in a huge difference.

If the powdered medicine adhering to the weighing pan is left as it is, there is a problem that it will be mixed in when another powdered medicine is subsequently mixed, so it is necessary to clean the adhering powdered medicine one by one.

Moreover, since such cleaning cannot be carried out completely, there is a risk that unnecessary powder medicines may be mixed in and a mixture different from the prescription may be prepared.

Furthermore, when the powder is put into the feeder from the weighing pan, the powder scatters, causing an error in the blended weight, and it is necessary to clean up the scattered powder. In this case as well, since complete cleaning cannot be carried out, there is a risk that a mixture different from the prescription may be made as described above.

In addition, in feeders for distributing powdered medicines, several types of powdered medicines are mixed and then distributed into individual sachets, so there is a problem of lack of accuracy in determining whether the several types of powdered medicines are evenly distributed into individual sachets. There is. When the powder is distributed using the feeder for distributing powder, the powder adheres to the feeder.
This will cause an error in the blending ratio and total weight of the powders packaged in the packaging paper.

In this way, the patient's life may be endangered if the drug is not prepared as prescribed.

(d) Means for solving the problem Therefore, in the present invention, a large number of stock cases are placed on a case storage shelf, each type of powder medicine is stored in each stock case, and powder medicines are stored in each stock case. By connecting the ejection devices,
In addition to being able to eject a fixed amount of one type of powder from each powder ejecting device, a large number of these powder ejecting devices are installed in parallel, and a mobile packaging device is arranged below these powder ejecting devices to move the same. The dispensing device is divided into a dispensing device main body that accommodates, mixes, and packages a predetermined amount of powder for one package ejected from each powder ejecting device, and a dispensing device main body that stores and mixes a predetermined amount of powder for one package ejected from each powder ejecting device, and a dispensing device main body that stores and mixes and packages a predetermined amount of powder for one package ejected from each powder ejecting device. It is an object of the present invention to provide an automatic powder medicine packaging machine characterized by comprising a transfer mechanism that sequentially moves the medicine to a position immediately below.

(e) Actions and Effects Therefore, according to the present invention, the following actions and effects are produced.

That is, in the present invention, the transfer mechanism sequentially moves the dispensing device main body directly below the powder ejecting devices that eject the powder necessary for compounding, and the predetermined amount of powder for one package is delivered from each powder ejecting device. In order to be able to accommodate and mix the powders in the packaging device main body, and also to package them separately, it is possible to mix the powder medicines for one patient, as in the past.
Furthermore, it is possible to eliminate the trouble of weighing one week's worth of powder medicine and then distributing it into individual sachets.

In addition, the conventional problems of powders adhering to the weighing pan, powders scattering when transferring the powders from the weighing pan to the powders distribution feeder, and powders adhering to the powders distribution feeder may cause problems. We are able to eliminate all problems caused by errors in the mixing ratio and total weight of powder medicines in separate packages.
The mixing ratio and total weight of one packet of powder medicine can be accurately determined according to the prescription.

Therefore, there is no risk of endangering the life of the patient taking the drug, and safety can be ensured.

Furthermore, since adhesion and scattering of powder medicines can be prevented, the effort of cleaning can be saved and there is no need to provide a cleaning device.

(F) Embodiments The embodiments of the present invention will be described in detail based on the drawings.
A shown in FIGS. 1 and 2 is an automatic powder medicine packaging machine. The packaging machine A has a case storage shelf 2 mounted on a hollow box-shaped machine base 1, and a large number of stock cases on the storage shelf 2. 3 can be stored in each case 3, and each type of powder B can be stored in each case 3. Each case 3 is connected to a powder ejection device 4 in communication with the device 4. The structure is such that powder medicine B can be taken out one type at a time.

In addition, a mobile packaging device 5 is installed in the machine 1 located below the powder ejecting device 4, and the device 5 divides the powder into packages. It is configured such that it can be taken out from the takeout port 1a.

Note that 1b is a caster attached to the lower side of the machine base 1, so that the automatic powder medicine packaging machine A can be easily moved.

The following is a stock case 3, a powder ejection device 4, and a mobile packaging device 5 that constitute the powder medicine automatic packaging machine A.
are detailed individually.

First, as shown in FIG. 3, the stock case 3 is made up of a funnel-shaped inner case 3b provided deep inside a rectangular box-shaped case body 3a, and the case body 3a is extracted into the case storage shelf 2. - The powder medicine B placed in a freely storable manner and stored in the inner case 3b is configured to be supplied and discharged to the powder ejection device 4 via a powder discharge guide pipe 6 piped to the inner part of the storage shelf 2. It is something.

The case main body 3a has a rail receiver 15 arranged in series on its lower surface, and the receiver 15 slides on an extractor guide rail 15' provided on the upper surface of the shelf board 2a that divides the case storage shelf 2 into multiple upper and lower stages. It is constructed so that it can be fitted in a movable manner and extracted toward the front along the rail 15'.

Then, the extracted guide rail 15' is attached to the shelf board 2.
a Silicone rubber 1 without providing it directly on the top surface.
By attaching it via an elastic material such as 5'a,
It maintains the cushion function.

The inner case 3b is tapered downward from the upper end opening 3c, and the lower end opening 3d is located as deep as possible so that the lower end opening 3d and the powder discharge guide tube are connected to each other. A communication connecting fitting 7 is interposed between the upper end of the inner case 3b and the powder discharge guide tube 6, and the connecting fitting 7 can freely connect and disconnect the lower end opening 3d of the inner case 3b and the powder discharge guide tube 6. .

That is, the communication connection fitting 7 is connected to the inner case 3b.
an upper metal fitting 7a connected to the lower end opening 3d;
A lower metal fitting 7 connected to the upper end of the powder discharge guide tube 6
The lower end surface of the upper metal fitting 7a is formed into a female type, and the upper end surface of the lower metal fitting 7b is formed into a male type.
When the case 3 is fully stored by fitting so that it can slide only in the extraction direction, the upper and lower metal fittings 7
A and 7b are configured so that they are in a communicating state.

The metal fitting 7 is arranged in a space formed between the lower surface of the case body 3a and the shelf board 2a that supports the case body 3a, and the upper metal fitting 7a is removed when the stock case is extracted. This prevents interference with the guide rail 15'.

Further, a lid 8 is disposed above the upper end opening 3c of the inner case 3b, and the lid 8 is connected to the tip of the plunger 9a of the opening/closing air cylinder 9 that is suspended from the ceiling surface 2b of the case storage shelf 2. In conjunction with
The upper end opening 3c can be opened and closed by the telescopic operation of the plunger 9a.

Moreover, an air supply pipe 10 is connected to the lid body 8 so that the air supply pipe 10 is connected to the inner case 3 when the lid is closed.
By supplying compressed air into the case 3b, the powder B stored in the case 3b is forced to be discharged from the lower end opening 3d.

Note that the device for raising and lowering the lid body 8 is not limited to the opening/closing air cylinder 9, and may be any device as long as it performs the same function.

Reference numeral 11 denotes an O-ring provided on the upper surface of the upper end opening 3c, which serves as a packing function when closing the lid.

Reference numeral 12 denotes an opening/closing mechanism that opens and closes the lower end opening 3d of the inner case 3b.The opening/closing mechanism 12 has a midway part of the lever 12a pivoted at the upper part of the inner case 3b, and one end 12a-1 of the lever 12a. Connector 12
The opening/closing body 12c is connected to the opening/closing body 12c via the opening/closing body 12c. The lower end opening 3d is closed by the weight of the opening/closing body 12c, and the lever 12a is tilted about the pivot portion 12d, so that the other end 12a-2 of the lever 12a is opened at the upper end of the inner case 3b. It is configured to protrude from 3c.

Then, when the lid 8 closes the upper end opening 3c of the inner case 3b by the opening/closing air cylinder 9, the lid 8 simultaneously closes the ram 1 which was protruding upward.
Press and rotate the other end 12a-2 of 2a, and
By upwardly rotating one end 12a-1 of 2a, the opening/closing body 12c is lifted and the lower end opening 3
d.

Therefore, when extracting the stock case 3, after all the powder B in the inner case 3b has been released, the lid body 8 is raised to open the upper end opening 3c, and the opening/closing body 12c is automatically opened at the lower end. By closing the opening 3d, the case 3 can be extracted in the same state, and the powder medicine B can be replenished into the inner case 3b.

Then, after storing the stock case 3, if the upper opening 3c is closed with the lid 8, the opening/closing body 12c opens the lower opening 3d as described above.
By opening , the powder medicine B is connected to the communication connection fitting 7.
The powder is discharged into the powder discharge guide tube 6 through the powder discharge guide tube 6.

Note that the opening/closing mechanism 12 is not limited to this, and any mechanism may be used as long as it can move the opening/closing body 12c up and down.

Reference numeral 13 denotes a vibrator attached to the side wall of the inner case 3b, and the vibrator 13 prevents the powder B from bridging within the inner case 3b. 14 is a handle.

Further, 16 is a powder medicine residual detection sensor, which detects when all the powder medicine B in the inner case 3b has been released, so that the powder medicine B can be quickly replenished.

In addition, the stock case 3' located at the lower level is
The depth is smaller than that of the stock case 3 located on the upper stage so that the lower stock case 3' does not interfere with the powder discharge guide tube 6 connected to the upper stock case during storage.

The powder discharge guide tube 6 connected to each stock case 3 is connected in communication with any one of a large number of powder discharge devices 4 arranged in parallel at predetermined positions within the machine stand 1.

Next, the powder ejecting device 4 will be explained. As shown in FIG. The rod 19 is moved back and forth by an air cylinder 17, and powder B, which is separately introduced into the hollow part of the nozzle body 18, is intermittently ejected as the rod 19 moves.

Below, air cylinder 17, nozzle body 1
8 and rod 19 will be explained individually.

The air cylinder 17 is a cylinder body 17
A piston rod 17b is attached to the main body 17a so as to be able to slide forward and backward, and a non-contact switch 1 is attached to the main body 17a.
7c and 17c are attached so that the piston rod 17b can slide forward and backward continuously and accurately, and the stroke of the rod 17b can be adjusted by the switches 17c and 17c. 17d and 17d are air pipes.

The nozzle body 18 includes an upper pipe 18a and a middle pipe 18.
b, and the lower pipe 18c are connected detachably in the vertical and vertical directions, respectively.

The lower tube 18c is formed hollow with an open upper end, and has a female threaded portion 18c on the inner circumferential surface of the upper open end.
-1 is formed so that a screw connection can be made to the middle pipe 18b through the female threaded part 18c-1, and the hollow part 18 provided in the lower pipe 18c
An inverted conical surface 18c-2 is formed at the lower end of the inner peripheral surface c-4, and the lower end of the inverted conical surface 18c-2 and the lower pipe 18
A powder ejection passage 18c-3 is formed between the lower end face of c.

The powder ejection path 18c-3 maintains a path length d in order to ensure a packing effect at the tip of the rod 19, which will be described later.
It has approximately the same diameter as the rod 19, and is formed so that the rod 19 can slide.

Further, in the middle of the hollow part 18c-4 of the lower pipe 18c, a powder medicine introduction pipe 18d is branched and communicated in an inclined manner.
The center line of the introduction pipe 18d and the center line of the lower pipe 18c are configured to intersect within the inverted conical surface 18c-2 formed at the lower end position of the lower pipe 18c, so that the center line of the introduction pipe 18d is The introduced powder B is made to flow into the inverted conical surface 18c-2.

The material of the nozzle main body 18 constructed as described above is not limited to metal, and may be any material such as ceramic, synthetic resin, etc.

Next, the rod 19 inserted into the nozzle body 18 will be described in detail.

That is, the rod 19 has a rod main body 19a formed in the shape of a vertically long rod, and the upper end thereof is connected to a large diameter pipe 19b.
An air inflow passage 19c is formed in the longitudinal direction from the upper end to the lower position at the advancing and retracting position of the rod body 19a, and the upper end of the inflow passage 19c is in communication with the inside of the large diameter pipe 19b. At the same time, an air inflow hole 19d bored in the lower part of the large diameter pipe 19b
In addition, the lower end of the air inlet passage 19c is provided with air jet holes 19e, 19e, 19e in three directions.
is formed so that the compressed air fed under pressure from the inflow hole 19d travels through the air inflow path 19c and is ejected from the air ejection hole 19e.

Moreover, the air jet hole 19e is connected to the rod 1.
9, the powder medicine introduction tube 18d is always positioned on the virtual extension of the introduction opening of the powder medicine introduction pipe 18d, and the powder medicine B introduced at the same position can be scattered by compressed air. I'm trying to make it possible.

When the rod body 19a is advanced to the lowest position, the lower end of the rod body 19a is connected to the powder jetting passage 18c.
-3 is formed to a length that is flush with the opening end or slightly protrudes, and the same ejection passage 18c
Two grooves 19f, 19f are provided on the inner circumferential surface of the lower end of the rod body 19a that slides inside the rod body 19a, and the powder B accumulates in the grooves 19f.
This accumulated powder exerts a packing effect with the inner circumferential surface of the powder ejection passage 18c-3, and prevents the powder B from being unnecessarily ejected to the outside from the powder ejection passage 18c-3.

The large-diameter pipe 19b is formed to have a diameter that allows it to slide up and down inside the upper pipe 18a, and a female threaded portion 19g is formed on the inner circumferential surface of the upper end opening, through which air for opening and closing is supplied. It is configured to be screwed onto the tip of the piston rod 17b of the cylinder 17, and a compressed air inflow pipe 19h is inserted into the air inflow hole 19d provided in the large diameter pipe 19b through an opening window 18a-1 provided in the upper pipe 18a. It connects.

Depending on the type of powder medicine B, a vibrator 20 is attached to the nozzle body 18 as shown in FIG. 5, so that the vibrator 20 can ensure the amount of powder medicine B to be emitted.

The powder ejecting device 4 configured as described above may be arranged in the machine stand 1 as follows.

That is, the opening/closing air cylinder 17 is connected to an air source via the air cylinder pipes 17d, 17d, and the compressed air inflow pipe 19h connected to the rod 19 is connected to the air source, so that the cylinder 17 connects the rod 19. The compressed air from the pipe 19h is made to be ejected from the air ejection hole 19e at the moment when the powder medicine ejection passage 18c-3 is opened and closed by moving downward, and the powder medicine introduction pipe 18d stores the powder medicine B. As the rod 19 rises, the powder B in the pressurized stock case 3 is transferred to the nozzle body 18 from the powder introduction pipe 18d via the powder discharge guide pipe 6. It suffices if it is fed under pressure into the lower pipe 18c.

At this time, if the atmospheric pressure is set to 1, the pressure of the compressed air that intermittently flows in from the compressed air inflow pipe 19h is set to 1.3 to 1.6, and the pressure intermittently applied inside the stock case 3 is set to 1.2, the powder that is pumped is When the rod 19 is raised, compressed air is ejected from the air ejection hole 19e of the rod 19 at a higher pressure than that of the powder B, and the powder B introduced into the nozzle body 18 is blown up. The powder B which is scattered and flows and stays below the ejection hole 19e is ejected in a fixed amount from the open powder ejection passage 18c-3.

Therefore, if the rod 19 repeats the vertical and reciprocating movement of the rod 19 as described above, the powder B that has been thrown up in the air will be sequentially ejected.
The powder is not ejected in a connected state, and a fixed amount of powder can be ejected intermittently and accurately in response to the movement of the rod 19.

Furthermore, according to the powder ejecting device 4,
Non-contact switch 1 for ejecting small amounts of powder around 0.2g
This is possible by adjusting the stroke of the rod 19 via the rod 19, so that the degree of miscibility with other powders can be ensured.
Powder B retained in the grooves 19f and 19f at the lower end
The Patsukin effect is very effective.

Also, depending on the type of powder, the air outlet 19
By appropriately adjusting the position of e and the jetting timing of compressed air, various predetermined amounts of powder can be jetted out.

Next, the mobile packaging device 5 disposed below the powder jetting device 4 will be explained. As shown in FIG. 5, the mobile packaging device 5 includes a packaging device main body 5a.
and a transfer mechanism 5b for laterally moving the main body 5a.
, left and right sealing parts 5d that seal the roll papers 5c, 5c into a bag shape, a roller 5e that sends the sealed sachets downward, and individually cuts the successively fed sachets. The cutter 5f and a weighing instrument 5i for weighing the packaged powder medicine are integrally cased.

The transfer mechanism 5b has one end of the transfer screw 5g interlocked with the drive motor 5h.
By screwing the packaging device main body 5a onto g, the main body 5a can be laterally moved to a desired position via the screw rod 5g.

Therefore, in the dispensing operation, the dispensing device main body 5a is moved horizontally by the transfer mechanism 5b directly below the designated powder ejecting device 4, and the necessary amount of powder B is sequentially dispensed from each powder ejecting device 4. The paper is stored and mixed between the left and right roll papers 5c of the packaging device main body 5a, and the paper is divided and packaged.

Moreover, the control operation of the packaging device 5 is performed by an automatic packaging control mechanism D, which will be described later.

Further, 5c-1 is a paper-out sensor, which issues an alarm before the roll paper 5c runs out to ensure that the packaging work is carried out reliably.

Also, 5k is a pre-linter, and roll paper 5
The date, patient's name, medication instructions, etc. are written on one side of the c.

This printer 5k is operated by an automatic packaging control mechanism D that is operated according to a prescription.

The weighing device 5i performs a check by weighing the total weight of powdered medicines mixed and packaged in accordance with a prescription and received by the individual.

That is, although the amount of powder B ejected from the powder ejection device 4 is constant and the mobile packaging device 5 also functions accurately, there is a risk that an operator who controls these may make a mistake. So,
The weighing instrument 5i is used to check the weighing instrument 5i to prevent accidents from occurring.

In Figure 5, 21' is the opening/closing lid, and 22' is the opening/closing lid 2.
This is an opening/closing mechanism that opens and closes 1'.

The powder medicine automatic packaging machine A configured as described above is configured to be able to be controlled by an automatic packaging control mechanism D as shown in FIG. 6, and the mechanism D is controlled and operated according to the prescription. In this way, not only the packaging work but also the inventory management of the powder medicines in the stock case 3 can be automatically performed.

That is, the automatic packaging control mechanism D includes a microcomputer 21, an external storage device 22, a keyboard 23, a recording printer 24, and a display 2.
5, and a sequence control device 26, each of which has a weighing device 5.
i, the drive motor 5h of the transfer mechanism 5b, the seal portion 5d, the first solenoid valve 27 that controls the air cylinder 17, and the second solenoid valve 2 that controls the air supplied to the nozzle body 18 and the stock case 3;
8 is connected.

In addition, the sequence control device 26 includes a paper outage sensor 5c-1, a printer 5k, a powder medicine residual detection sensor 16, and a vibrator 1.
3 and 20 are connected so that they can be operated as appropriate.

If the automatic powder packaging machine A is controlled by the automatic packaging control mechanism D, rational packaging operations can be performed as described below.

That is, when the keyboard 23 is operated to activate the microcomputer 21 in order to perform the packaging operation according to the prescription, the sequence control device 26 controls the drive motor 5h, and the motor 5h operates the packaging device main body 5a. is moved to a predetermined position, and the powder is supplied from the stock case 3 to the powder ejecting device 4 via the first and second solenoid valves 27 and 28, and the powder is ejected from the device 4.
Furthermore, the sealing part 5d is controlled to perform the packaging operation, and finally the total weight is checked by the weighing instrument 5i, completing a series of automatic controls. At this time, the display 25 shows the following: patient name,
In addition to displaying prescriptions, medication instructions, month and date, etc.
The information is recorded by the recording printer 24 and further stored in the external storage device 22 so that drug checking and inventory management can be performed simultaneously.

[Brief explanation of the drawing]

Figure 1 is a front view of an automatic powder medicine packaging machine according to the present invention, Figure 2 is a partially cutaway side view of the same packaging machine, and Figure 3 is a partially cutaway side view of the same packaging machine.
The figure is an enlarged side sectional view of the same essential part, Figure 4 is a partially cutaway side sectional view of the same essential part, Figure 5 is an explanatory diagram of the same essential part, and Figure 6 is an automatic packaging control mechanism. Block diagram, A: automatic powder packaging machine, B: powder, 3: stock case, 4: powder ejection device, 5: mobile packaging device.

Claims (1)

[Claims] 1. A large number of stock cases 3 are placed on a case storage shelf 2, each type of powder medicine B is stored in each stock case 3, and each stock case 3 is provided with a powder ejection device 4.
are connected in communication so that a fixed amount of one type of powder B can be ejected from each powder ejecting device 4, and a large number of these powder ejecting devices 4 are arranged in parallel, and a movable device is installed below these powder ejecting devices 4. A dispensing device 5 is disposed, and the movable dispensing device 5 is used to store and mix a predetermined amount of powder B for one package ejected from each powder ejecting device 4, and to divide the same. An automatic powder medicine packaging machine comprising a main body 5a and a transfer mechanism 5b that sequentially moves the packaging machine main body 5a to a position immediately below each powder ejection device 4.