JPH059281Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a device for preventing erroneous replenishment of automatic powder medicine packaging machines.

(b) Conventional technology Conventionally, dividing and packaging powdered medicines was carried out as follows.

That is, several types of required powder medicines are measured and taken out according to a prescription from a variety of medicine bottles stored on a powder medicine dispensing table, and these are placed in a mortar or mixer and mixed.

Then, this admixture is divided and packaged using a dividing and packaging machine.

However, the following problems have occurred in the above-mentioned dividing and packaging work for powdered medicines.

That is, they are caused by the adhesive properties of powdered medicines, including contamination, division errors, mixing errors, etc., and these pose serious and serious problems in that uniformity of medicinal efficacy cannot be expected.

In order to solve the above problems, a large number of stock cases that store one type of powder medicine and a powder ejection device that spouts out a predetermined amount of one type of powder medicine are connected to each other, depending on the type of powder medicine. Furthermore, a mobile packaging device is movably arranged below the powder ejecting device, and the dispensing device moves to a required position below the powder ejecting device, and the powder is ejected from the device. An automatic powder packaging machine has been invented that is configured to accommodate, mix, and package a predetermined amount of powder medicine, and when the machine is operated according to a prescription, the machine operates as follows. The packaging work is done automatically.

That is, when the mobile dispensing device moves below the required powder dispensing device, a predetermined amount of powder is ejected from the powder dispensing device and is stored in the dispensing device. The operation of the device is repeated as many times as there are types of powder medicines to be mixed,
The same packaging device then packages the powder, and at this time, the powder is directly supplied to each powder ejecting device from each stock case for each type, and only a predetermined amount is ejected from the same device, so contamination is avoided. Problems such as separation errors, division errors, and mixing errors do not occur, and packaging operations can be performed quickly and accurately, making it easier to reduce labor costs and manage drug inventory.

Furthermore, since this automatic powder medicine packaging machine has a structure that can be easily controlled automatically by a computer, it is possible to simultaneously solve the conventional concerns of streamlining packaging operations and ensuring drug efficacy. It is.

(c) Problems that the invention aims to solve However, this automatic powder medicine packaging machine is equipped with many stock cases containing different powder medicines, and it is difficult to know how to provide appropriate training when replenishing powder medicines into the same cases. Even if trained workers do this and take preventive measures such as writing the name of the powder on the same case, powder replenishment will still be done artificially, and powders that should be replenished may be put into the wrong stock case. If such erroneous replenishment occurs, the drug may not be dispensed according to the prescription and the drug's efficacy may not be expected, but it may also lead to contraindications in combination and endanger the patient's life.

(d) Means for solving the problem In this invention, a stock case that stores each type of powder medicine and a powder ejection device that spews out a predetermined amount of one type of powder are connected to each other, depending on the type of powder. In addition, a mobile packaging device is movably arranged below the powder ejecting device, and the dispensing device moves to a position below the required powder ejecting device, and the device In an automatic powder packaging machine configured to accommodate, mix, and package a predetermined amount of powder sprayed from a container, the powder supply port of each stock case is closed with a lid body, and the lid is closed with a locking device. In addition to keeping the body lid closed, a powder presence/absence sensor is installed in the powder discharge guide tube provided at the bottom of each stock case to detect the presence or absence of powder, and a presence/absence signal output from the sensor is installed. The present invention aims to provide a device for preventing erroneous replenishment of an automatic powder medicine packaging machine, which is configured to release the locking device of the stock case in which the sensor is located so that the lid can be opened only if the sensor is located in the stock case.

(E) Function/Effect In this device, when the powder in each stock case runs out, a signal indicating whether or not the powder is present is output from the powder presence/absence sensor installed in the powder discharge guide tube provided at the bottom of the stock case. The worker then recognizes the powder to be replenished and replenishes the powder to the automatic powder packaging machine, but the lid of the stock case is kept closed by a locking device and outputs a negative signal. Since only the lid of the stock case in which the powder medicine presence/absence sensor is located, that is, the stock case to which powder medicine is to be replenished, can be opened, it is possible to reliably prevent powder medicine from being put into the wrong stock case. This has the effect of completely preventing the above-mentioned artificial incorrect replenishment.

(F) Example The example of the present invention will be explained in detail based on the drawings.
A shown in FIGS. 1 and 2 is an automatic powder packaging machine. The packaging machine A has a case storage section 2 on the top of a hollow box-shaped machine base 1, and the storage section 2 has a large number of stock cases 3. are arranged so that each type of powder B can be stored in each case 3, and a powder ejecting device 4 is connected to each case 3 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 stand 1 located below the powder ejecting device 4, and the powder is packaged by the device 5. It is configured such that it can be taken out from the takeout port 1a.

In the figure, reference numeral 1e denotes a top panel that covers the upper part of the case storage section 2, and can be slid left and right or removed to open the case storage section 2.

The stock case 3, powder ejecting device 4, and mobile packaging device 5 that constitute the powder medicine automatic packaging machine A will be described in detail below.

First, as shown in FIGS. 3 and 4, a large number of stock cases 3, which are circular in plan view and approximately funnel-shaped, are placed on a deck 1b that is stretched horizontally over the top of the machine base 1. The upper edge is disposed with an upward protrusion h, and the upward protrusion h of the upper edge prevents powder spilled on the upper surface of the deck 1b from entering the case 3.

The powder medicine B stored in the case 3 is supplied and discharged to the powder ejection device 4 via a powder discharge guide pipe 6 piped to the lower end of the case 3.

Further, each stock case 3 is provided with a plurality of air nozzles 7, and air is ejected from the nozzles 7 to prevent bridging of the powder medicine B and pressurize the inside of the case 3.

A substantially cylindrical lid 9 is fitted into the powder supply port 8 opened at the top of each stock case 3 to close the supply port 8. and the same flange 1
The bottom surface of the stock case 3 is brought into contact with the top of the stock case 3 for positioning when the lid is closed, and upper and lower flanges 12 and 13 are provided on the outer periphery of the lower edge of the lid body 9 to hold the gasket 11. Same flange 12, 13
The inside of the stock case 3 is kept confidential by a gasket 11 inserted between the stock cases 3 and 3.

The bottom plate 14 of the lid 9 is stretched on the periphery of the lid at a higher position than the lower edge of the lid 9, and a support net is stretched between the lower surface of the bottom plate 14 and the lower edge of the lid 9. A desiccant 15 is filled in between the air filter 14a and the air conditioner 14a.

The upper flange 1 when the lid body 9 is closed.
2 Outer wall 3 of stock case 3 at the same height as the top surface
By disposing a locking device C on the outer wall 3a and bringing the locking pin c-1 of the device C, which protrudes into the inside of the case 3, into contact with the upper surface of the upper flange 12. , preventing the lid 9 from moving upward, that is, opening the lid.

The locking device C is connected to the outer wall 3 of the stock case 3.
Operating part c-2 such as a small single-acting air cylinder or solenoid fixed to a and the locking pin c-1
The locking pin c-1 is retracted into the actuating part c-2 only when open air pressure or control signal voltage is applied to the actuating part c-2, and the pin c- 1 and the upper surface of the upper flange 12 is released to enable the lid body 9 to be opened.

In addition, 9a in the figure is a handle for opening and closing the lid body 9;
Reference numeral 10a denotes a stepped portion provided on the upper flange 10 in order to make the above-mentioned positioning accurate.

Further, reference numeral 16 denotes a powder presence/absence sensor, which is disposed near the lower end of the stock case 3 on the outer wall of the powder discharge guide tube 6, and detects the presence or absence of the powder B in the case 3. Then, a presence/absence signal is output to a control device D, which will be described later.

The powder presence/absence sensor 16 may be of an electrostatic type that detects changes in capacitance depending on the presence or absence of the powder B in the powder discharge guide tube 6, or may be of an electrostatic type that detects changes in capacitance depending on the presence or absence of the powder B in the powder discharge guide tube 6, or may be constructed of a transparent material and transmit light. Alternatively, a non-contact type sensor can be used, such as a photoelectric type sensor that detects the presence or absence of powdered medicine based on a change in reflected light, or an ultrasonic type that emits ultrasonic waves and detects the presence or absence of powdered medicine based on its echo. can.

Next, the powder ejecting device 4 will be explained. As shown in FIG. 1
9 is moved back and forth by the air cylinder 17, and the powder B, which has been separately introduced into the hollow part of the nozzle body 18, is moved along with the movement of the rod 19.
It is configured to eject intermittently.

Below, air cylinder 17, nozzle body 18,
The rods 19 and 19 will be explained individually.

The air cylinder 17 has a piston rod 17b attached to a cylinder body 17a so as to be slidable forward and backward.
Furthermore, the main body 17a includes a non-contact switch 17.
Attach piston rod 17 with c and 7c.
The rod 17b is configured to slide forward and backward, and the stroke of the rod 17b can be adjusted by the switches 17c, 17c. 17d, 17d
is air piping.

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 a position opening, and has a female threaded portion 18c on the circumferential surface of the upper end opening.
1 and configured to be able to be threadedly connected to the middle pipe 18b via the female threaded part 18c-1,
Moreover, the hollow part 18c- provided in the lower pipe 18c
4, an inverted conical surface 18c-2 is formed at the lower end of the inner peripheral surface, and a powder ejection passage 18c-3 is formed between the lower end of the inverted conical surface 18c-2 and the lower end surface of the lower tube 18c.

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.

In addition, a powder introduction pipe 18d is branched and communicated in an inclined manner in the middle of the hollow portion 18c-4 of the lower pipe 18c, so that the center line of the introduction pipe 18d and the center line of the lower pipe 18c are aligned with each other. Powder B is configured to intersect within the inverted conical surface 18c-2 formed at the lower end position, and is introduced through the powder introduction tube 18d.
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 inlet passage 19c is formed in the longitudinal direction from the upper end to the lower position at the forward and backward positions of the rod body 19a, and the upper end of the inlet passage 19c is in communication with the inside of the large diameter pipe 19b. At the same time, the air inflow pipe 19d located at 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 pipe 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 peripheral surface of the lower end of the rod main body 19a that slides inside the rod body 19a, and the powder B stays in the grooves 19f.
This retained 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. piston rod 17b
It is configured to be screwed onto the tip of the large diameter pipe 19b.
The air inflow pipe 19d provided in the upper pipe 18a
A compressed air inflow pipe 19h is connected through an opening window 18a-1 provided in the.

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

That is, the air cylinder 17 is connected to the air piping 1.
7d and 17d, and a compressed air inflow pipe 19h connected to the rod 19 is connected to the air source.
At the moment when 8c-3 is opened and closed, compressed air from the pipe 19h is blown out from the air outlet 19e, and the powder introduction pipe 18d is connected to the powder B.
Powder B in the pressurized stock case 3 is connected in communication with the stock case 3 storing powder medicine B.
However, as the rod 19 rises, it may be forced to be fed into the lower tube 18c of the nozzle body 18 via the powder discharge guide tube 6 and from the powder introduction tube 18d.

At this time, assuming that the atmospheric pressure is 1, the pressure of the air that intermittently flows in from the compressed air inflow pipe 19h is
1.3 to 1.6, and if the pressure applied intermittently in the stock case 3 is set to 1.2, when the rod 19 rises, a higher pressure is applied from the air outlet 19e of the rod 19 than when the powder B is pumped. As the compressed air is ejected, the powder B introduced into the nozzle body 18 is blown up and scattered, and the powder B that has flowed and accumulated below the nozzle hole 19e is released. A fixed amount of powder is ejected from the 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.

The air that comes into contact with the powder B, that is, the air that is blown into the stock case 3 and the nozzle body 18, is compressed by a compressor, passed through a dryer and an oil filter, and then passed through a microfilter that captures particles down to 0.01μ. The air is dehumidified and extremely clean, containing no oil or other substances.

Next, the mobile packaging device 5 will be explained. The mobile packaging device 5, as shown in FIG. The main body 5a includes left and right roll papers 5c, 5c for packaging the powder medicine B ejected from the powder medicine jetting device 4, left and right seal parts 5d for sealing the roll papers 5c, 5c into a bag shape, and the sealed sachets. A roller 5e that sends the paper downward and a cutter 5f that individually cuts the continuously fed packets.
and a conveyor 5i for transporting the individually cut packages to the take-out port 1a diagonally upward.

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, the mobile packaging device 5 is horizontally moved directly below the designated powder ejecting device 4 at any time.
A predetermined powder B is sequentially stored and mixed between the left and right roll papers 5c, 5c, and then packaged.

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 printer, and roll paper 5c
The date, patient's name, medication instructions, etc. are written on one side.

The powder medicine automatic packaging machine A configured as described above is controlled by a control device D as shown in Fig. 6, and if the device D is operated according to the prescription, it can not only be used for packaging but also for stock cases. Even the inventory management of powdered medicines in 3 is automatically done.

That is, the control device D includes a microcomputer 21, an external storage device 22, a keyboard 23,
It consists of a recording printer 24, a display 25, and an input/output interface 26, and the input/output interface 26 includes a conveyor 5i, a drive motor 5h for the transfer mechanism 5b, a seal portion 5d, and a first solenoid valve for controlling the air cylinder 17. 27, and the nozzle body 18 and the air nozzle 7 of the stock case 3
The second solenoid valve 28 for controlling the air supplied to
If 2 is an air cylinder, it is connected via a solenoid valve, and if it is a solenoid, it is connected via a relay or the like.

Further, the input/output interface 26 is connected to a paper out sensor 5c-1, a printer 5k, and a powder presence/absence sensor 16.

Therefore, in order to carry out the packaging work according to the prescription,
When the microcomputer 21 is activated by operating the keyboard 23, the drive motor 5h is controlled via the input/output interface 26, and the mobile packaging device 5 is moved to a predetermined position by the motor 5h. First and second solenoid valves 27, 28
The powder is supplied from the stock case 3 to the powder ejecting device 4 through the device 4, and the powder is ejected from the device 4. Furthermore, the sealing portion 5d is controlled to carry out the packaging operation, and finally the conveyor 5i transfers the powder to the outlet. 1a
At this time, the patient's name, prescription, medication instructions, date, etc. are displayed on the display 25, and are recorded by the record printer 24. is recorded in the external storage device 22.

During this packaging operation, the lid 9 of each stock case 3 is kept closed by the lock device C, and the presence or absence of the powder B in each stock case 3 is constantly monitored by the powder presence/absence sensor 16. When a shortage of powder occurs in any of the stock cases 3, the sensor 16 outputs a negative signal, which is transmitted to the microcomputer 21 via the input/output interface 26, and The display 25 displays the location of the stock case 3 in which there is a shortage of powder medicine and the name of the shortage medicine B, and the lock device C disposed in this stock case 3 only performs a lock release operation. The lid body 9 can be opened.

Therefore, the operator can recognize the name of the missing powder medicine B and the location of the stock case 3 through the display 25, and the worker cannot open the lids of the stock cases 3 other than the stock case 3 where the powder medicine B is missing, so that he or she can avoid making mistakes. If the above-mentioned powder medicine B is put into the stock case 3, erroneous replenishment will not occur.

Furthermore, even if two or more stock cases 3 accidentally run out of powder medicine B at the same time, each stock case 3 is assigned an appropriate priority order, and the above display and lock release are performed in accordance with the same order. By programming the microcomputer 21 so that it does not move on to the next operation unless it is inputted into the microcomputer 21 that the supply of powdered medicines to the stock case 3 has been completed, erroneous replenishment can be prevented in the same way as described above.

Then, the name of the supplied powder, the date and time, the name of the worker, etc. are printed out by the record printer 24,
Furthermore, the information is recorded in the external storage device 22 so that checking of chemicals and inventory management can be performed simultaneously.

[Brief explanation of the drawing]

FIG. 1 is a front view of an automatic powder medicine packaging machine according to the present invention. FIG. 2 is a sectional view of FIG. 1. Figure 3 shows
An enlarged side sectional view of the stock case. FIG. 4 is a plan view of the stock case. FIG. 5 is a longitudinal sectional view of the powder ejecting device. FIG. 6 is a block diagram of the control device. A... Automatic powder packaging machine, B... Powder, C... Lock device, 3... Stock case, 4... Powder ejecting device, 5... Mobile packaging device, 8... Powder supply port, 9... Lid body, 16... Powder presence/absence sensor.

Claims (1)

[Scope of utility model registration request] Stock case 3 that stores each type of powder medicine B
and a powder ejecting device 4 that ejects a predetermined amount of one type of powder B at a time. The device 5 is movably disposed, and the packaging device 5 moves to a position below a required powder ejecting device 4 to accommodate and mix a predetermined amount of powder B ejected from the device 4, In the automatic powder packaging machine A configured to divide and package, the powder supply port 8 of each stock case 3 is closed with a lid 9,
A locking device C holds the lid 9 in the closed state, and a powder presence/absence sensor 16 for detecting the presence or absence of powder B is arranged in the powder discharge guide tube 6 provided at the bottom of each stock case 3. The same sensor 1
This device for preventing erroneous replenishment of an automatic powder medicine packaging machine is configured to release the locking device C of the stock case 3 in which the sensor 16 is located to enable the lid to be opened only when the presence/absence signal outputted from the sensor 6 is negative.