JPS62135732A - Method and device for distributing fixed quantity of granule - Google Patents

Abstract

PURPOSE:To attain quickly a distributing work by making a granule flow down by a fixed quantity each onto an endless path for executing a cyclic motion, forming a uniform rib, and determining a unit rib length of the granule to be packed to a unit package from its overall length and distribution number. CONSTITUTION:When a granule is put into a hopper 10 and a driving switch is turned on, the granule of a fixed quantity flows out of a discharge port 12, and a rib C of the granule is formed on the upper face of a running belt conveyor 7. Passing of the rib C is detected by a sensor 4, the number of transmitting pulses of an encoder 5 in the course of its passing is counted by a microcomputer (MC) 29, and this count number becomes an arithmetic data of a unit rib length. Also, to the MC 29, the distributing number is inputted in advance, and a calculation for dividing the number of pulses which are transmitted from the encoder 5, by the distributing number is executed. When the tip of the rib C reaches the lower part of a scraping device 6, a pulse motor 8 is driven by the number of pulses of this calculated value and stopped. As a result, the granule is fed into the device 6 by a driven portion, and the MC 29 decides it and moves the device 6, and scrapes down the granule to the downstream side.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention provides a method for quantitatively dispensing powder and granules, and an apparatus for the same.
4, and the unit dose of mixed powder medicine etc. 7, H14
It can be used when packaging in H.

[Prior art and its problems] In hospitals, etc., when dispensing and packaging prepared powder medicines for each unit dose, the following apparatus has conventionally been used.

This creates a large number of depressions along the circumferential direction of the disc surface.
! ! ! They are arranged continuously, and the bottom of each recess has a difference in opening and closing. A hopper (hereinafter referred to as a supply device) for storing a powdered drug (hereinafter referred to as powder or granular material) as a packaged object is arranged above the first disc, and an opening at the lower end of the supply device is provided. faces the concave portion of the disk from above.

When distributing and packaging powder and granular materials into unit packages, first, the powder and granular materials are placed into a supply device. Then, the feeding device is vibrated in small increments along the arrangement direction of the concave portions of the disk, and is reciprocated several times, so that a small amount of powder and granules are transferred into the concave portions of the disk using a sieve M L to pass through each concave portion. Divide 1 cup evenly between the two.

Thereafter, the lid at the bottom of each recess is opened, and the powder is taken out onto wrapping paper and packaged.

Then, by adjusting the movement range of the feeding device, the number of recesses fed by the feeding device changes, and packages corresponding to the required number of packages can be obtained.

However, the conventional method described above has a problem in that it takes a long time for packaging.

This is because the powder and granules must be supplied from the supply device in small quantities, and if the supply amount per unit time is increased, distribution errors will increase.

That is, in the conventional method mentioned above, when the supply of the powder and granules from the supply device is completed, it is not known which concavity of the disk the powder will correspond to. Therefore, if you increase the amount of powder and granular material you supply in a degree time, this supply of sheet metal 4. ) is constant, there will be large variations in the hardness of the powder tF (object) distributed to each recess.

From this, in order to reduce the distribution error, it is necessary to reduce the supply amount per unit time from the supply device as much as possible. will require a long time. That is, the packaging time is longer.

(Regarding the first invention) [Technical assignment 8] The first invention is a method for quantitatively distributing powder and granules filled in a supply device, in which the powder and granules are evenly distributed. In order to be able to perform work quickly, it is an object of the present invention to make it possible to reduce the distribution error even if the amount of powder and granules supplied from a supply device per unit time is increased.

[Technical means] The technical means of the first invention for solving problem E is to make uniform ridges by flowing powder particles down a circularly moving endless road at a constant ψ rate, and to Add A111 to the total length and use this and the number of distributions to fill the unit package. The unit ridge length of the granular material to be processed is determined, and the granular material is distributed for each unit ridge length.

[Effect] The above-mentioned sub-operative measures operate as follows.

When powder and granules are allowed to flow down a circulating endless path,
Ridges of powder particles with a constant density are formed on the endless road.

Next, after feeding the powder and granule material, measure the total ridge length of the powder and granule material, divide this by the number of distributions, and the quotient will be the volume of the powder and granule material that must be filled into a unit package. The ridge length corresponding to , that is, the capacity per unit package converted to the ridge length is determined.

Thereafter, it is sufficient to take out the powder while measuring the ridge length corresponding to the capacity of the above-mentioned unit package.

Even if the amount of hot water supplied per unit time for powder and granules supplied onto the endless path increases, as long as the supply amount remains constant, the amount of powder and granules that must be filled into a unit package can be accurately determined. be done. In other words, the distribution error is reduced.

[effect] The first invention of L foot temperature has the following unique features.

Even if the supply t knee of the powder and granules fed onto the endless path increases, the difference in distribution t4 is small, compared to the method of boiling the powder and granules one by one into a large number of recesses. Less work time required.

(Regarding the second invention) The second invention relates to a device that is directly used for carrying out the first invention, and like the invention No. The purpose is to

[Technical Means] The technical means of the second invention to achieve the above object is to flow powder and granules onto the endless path at a constant rate on the flow side of the endless path that moves once. A feeding device for forming ridges on the grains is provided, and a scraping device for scraping out a certain range of the tips of the ridges is provided on the downstream side of the feeding device, and further a ridge length determining device for determining the length of the ridges by X+++; The length is divided into 1 and 10.
and a device for calculating the unit furrow length corresponding to the filling amount of the packaging of about tB, and a scraping signal generator that outputs a constant output every time the end wire moves by the unit furrow length, The amount of scraping by the scraping device described in h.
The device is configured to operate every time there is an output from the scraping signal generator.

[Action/Effect] 1. The above technical means works as follows.

First, put the powder and granules into the supply device Takeuchi.

Input the distribution number into the calculation device.

Next, when the endless path is driven, the powder and granules fall continuously onto the endless path at a constant rate, creating ridges of the powder and granules of a predetermined length.

Then, the total length of this ridge is measured by a ridge length measuring device, and the ridge length is input to a calculation device.

The arithmetic device, to which the total ridge length of the powder material is input, divides the ridge length by the distribution number that has already been input, and calculates the quotient. That is, the volume φ of the powder or granular material that must be filled into a unit package is calculated by converting it into the ridge length.

On the other hand, the running of the endless path continues during this time, and eventually the ridge tips of the powder particles advance to the portion of the endless path where the scraping device is provided.

Then, from then on, an output signal is output from the scraping signal generator every time the endless path moves by a unit ridge length. Then, each time the signal is output, the scraping device operates and repeats the operation of taking out the particulate matter. In other words, it is possible to distribute fixed counterfeits for each rattan packaging amount.

Even if the supply amount per unit time of the powder and granules supplied from the supply device to the endless path is large, the supply is too small. As long as the amount is constant, accurate distribution is achieved, so the same effect as the first invention is achieved.

[Embodiment] The first embodiment of the invention No. 2 [1] adopts a pulse motor as the driving source of the endless road, and the ridge length measuring device is a pulse generator and a powder on the endless road. It consists of a sensor that detects particles and a counter that counts the number of pulses from the pulse generator that corresponds to the sensor's detection time of particles. The number of unit pulses corresponding to the ridge length is calculated, and the scraping signal generator is a signal generator that attains a predetermined output state when the number of human pulses to the pulse motor matches the number of unit pulses. It is.

According to the above embodiment, a pulse motor is used as the drive source of the endless path, and the scraping signal generator is set to a predetermined output state when the number of human pulses to the pulse motor matches the unit pulse number. As a result, the scraping device is put into operation, so there is no need to separately provide an endless path moving distance measuring device 15 for determining the timing of operation of the scraping device.

Next, in a second embodiment of the second invention, the scraping signal generating device is a unit movement distance A11l determining device that generates a scraping signal every time the endless path moves by a unit ridge length.

This embodiment also operates in the same manner as the technical means of the second invention.

Next, the third embodiment of the second invention is that the drive source of the endless path is set to a temporary stop state IE when the device for scraping out particulate matter is in operation.

This embodiment has the following advantages.

That is, when scraping out particulate matter without running the endless track continuously, the scraping speed of the scraping device needs to be faster than the running speed of the endless track. On the other hand, according to the above embodiment, since the scraping device operates when the endless road is stopped, the device can be installed without considering the relationship between the scraping operation speed and the running speed of the endless road. There is.

[Example] Next, the above-described example of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a packaging device used to carry out the present invention.

This device consists of a belt conveyor (7), a feeding device (1) and a scraping device (6) arranged at both ends of the solenoid, and a sensor (4) arranged between these two.
This device consists of a pulse motor (8) and an encoder (5).
and a microcomputer (28).

The belt conveyor (7) corresponds to the endless path described above, and the pulse motor (8) corresponds to the drive source for the endless path.

In addition, the output signal of the encoder (5) is transmitted to the computer (
29) and is counted mechanically. The computer program procedure for counting the output signal of the encoder corresponds to the counter described above.

The supply device (1) includes a hopper (1) into which the powder (a) is placed.
0) and a pipe rake (11) that applies vibrations to the hopper (10).

A discharge port (12) is provided at the lower end of the hopper (lO), and a shutter (13) is attached to the discharge port (12). The shutter (13) is opened and closed by a solenoid (14) disposed on the E side of the shutter (13), thereby making it possible to adjust the opening amount of the discharge port (12).

A scraping device (8) is disposed above the other end of the belt conveyor (7), and the scraping device (6) is constructed as described below.

In other words, the arm (
A horizontal rod (67) is arranged in the center of the arm (60), and the rod (67) is connected to a crank plate (63) so that it moves forward and backward in the water direction. (6
0) has a swinging arm (68) having a swinging fulcrum (62).
) is rotatably connected in the middle of the kneading arm (6th).
The swinging end of the cam plate (65) is coupled to the cam plate (65).

Further, a guard (8) for guiding the powder is disposed at the bottom of the scraping device (6), and heater rolls (91) and (92) are disposed downstream of the guard (8). There is.

Further, a plurality of recesses (93), (93) are arranged at intervals in the circumferential direction on the surface of each heater roll (91), (92),
1) and (92), there is a heat-fusible packaging tape (
b) , (b) are sent.

And the crank plate (83), the cam plate (65),
Furthermore, heater rolls (91), (92), etc.
They are driven by a common motor (95) via a chain (96).

On the other hand, the belt conveyor (7) is driven by a pulse motor (8). A microcomputer (29) is connected to the pulse motor (8), and the operation of the pulse motor (8) is controlled by the output from the microcomputer (29).

In addition, to the microcomputer (29) mentioned above, an encoder (5) and a sensor (4) are connected, as well as a packaging number input device (39) for inputting the number of distributions. Data necessary for calculations described later is input from each of these parts. Further, the microcomputer (29) has an arithmetic expression written in advance, and processes each data listed in L according to the arithmetic expression. This microcomputer corresponds to the arithmetic device described above, in which the procedure in the program processes data according to the above arithmetic expression.

Now, when you put powder and granules into the hopper (10) and turn on the drive switch, the hopper (10)
(11) gives vibration, and the lower discharge port (12
), a certain amount of powder begins to flow out, and the powder creates a ridge (C) on the upper surface of the running belt conveyor (7).

The ridge (C) passes through the lower part of the sensor (0), and the sensor (4) detects the passage, and the number of pulses transmitted by the encoder (5) during the passage is determined by the microcomputer (0). 29), and this counted number becomes the calculation data of the unit ridge length.

Then there are the sensors (4) and encoders (5).

Furthermore, the procedure in the program for counting the number of pulses generated by the encoder while the sensor (4) detects the ridge (C) corresponds to the ridge length measuring device described above.

Further, the number of distributions is inputted in advance to the microcomputer (29), and the number of F pulses output from the encoder (5) is calculated by the arithmetic procedure section (corresponding to the arithmetic unit described above) of the microcomputer. The calculation is done by dividing by the number of distributions.

That is, the length of the ridge (c) corresponding to the amount of filling in a unit package is converted into the number of pulses.

Next, the number of output pulses of the encoder (5) generated from the initial stage of driving and the pulse motor are used to determine when the ridge tip of the powder on the belt conveyor (7) reaches the scraping device (8).
Judging by the rotation amount of (8), etc., the belt conveyor (7)
) is switched to intermittent running state.

That is, when the tip of the ridge (C) reaches the bottom of the scraping device (6), the pulse motor (
8) is driven and stopped.

Then, the particulate material on the belt conveyor (7) will be fed into the scraping device (6) by the amount driven by the above drive, and the microcomputer (29) will judge this and move the powder to the scraping device (6). to scrape out the powder and granules to the downstream side.

That is, the scraping plate (68) of the scraping device (8) sequentially removes powder and granules by blocking the movement as shown in the movement trajectory (A) in the figure by the movement of the crank plate (63) and the cam plate (85). Take it out.

The program procedure for generating a signal for operating the scraping device in the microcomputer (29) corresponds to the scraping signal generating device described above.

Then, the scraped out powder and granules are wrapped with packaging tape (b),
(b) and these packaging tapes (b), (b) heater rolls (91) for welding and cutting each other;
2) It is packaged by

Thereafter, the intermittent operation of the belt conveyor (7) moving and stopping by the same amount as described above is repeated, and the scraping device (6) also operates for each unit operation to evenly distribute and package the powder and granules.

In the above embodiment, an encoder (
Although the transmission pulse of 5) is used, a normal distance meter for measuring the moving distance of the belt conveyor (7) may also be used.

Further, in the above embodiment, when taking out powder and granules.

The belt conveyor (7) may run intermittently or continuously.

If the belt conveyor (7) is to be run continuously to take out powder and granules, the scraping speed of the scraping plate (6B) of the scraping device (6) should be set faster than the running speed of the belt conveyor (7). good.

Next, FIG. 3 shows a case where a plurality of the above-mentioned devices are arranged side by side, and the microcomputer (29
), sensor (4), etc. are m-, it is possible to control multiple conveyors.

In addition, in Example -h, the powder and granules (a) were dropped onto a belt conveyor, but as shown in Fig. 4, a rotary table (
90) may be used.

That is, the supply device (1) is disposed on one circumference of the rotary table (90), and the scraping device (6) is disposed on the circumference on the downstream side thereof.

Then, while dropping the powder onto the rotary table (90), the rotary table is rotated in the direction shown by the arrow in the figure, and the scraping device (6) disposed on the downstream side is moved in the radial direction to remove the powder. Items are taken out in unit packaging quantities.

In this embodiment, the rotary table (90) corresponds to the endless path described above.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the device used to carry out the present invention, Fig. 2 is an enlarged view of the processing device (3), and Fig. 3 shows a state in which a plurality of devices used to carry out the present invention are used side by side. The perspective view and FIG. 4 are explanatory diagrams of another embodiment, and in the figure, (1)...supply device (4) φ eye sensor (6) bone/φ scraping device

Claims (5)

[Claims] (1) In a quantitative dispensing method for distributing powder and granules filled in a feeding device, the powder is uniformly distributed by flowing down a fixed amount onto a circularly moving endless path. A ridge is created, the total length of the ridge is measured, and from this and the number of distributions, the unit ridge length of the powder and granular material to be filled into the unit package is determined, and the powder and granular material is distributed for each unit ridge length. Quantitative dispensing method for powdered and granular materials. (2) In a quantitative dispensing device for powder and granules that evenly distributes the powder and granules filled in the supply device, the upstream side of the circularly moving endless path is such that the powder and granules are placed on the endless path. A feeding device that creates ridges by flowing down a certain amount of powder and granules, a scraping device that scrapes out a certain range of the tips of the ridges on the downstream side thereof, and a ridge length measuring device that measures the length of the ridges. , an arithmetic device that calculates the unit ridge length corresponding to the filling amount of the unit package by dividing the ridge length by the distribution number, and outputs a constant output each time the endless path moves by the unit ridge length. A scraping signal generating device is provided, and the scraping amount by the scraping device is an amount that corresponds to the unit ridge length from the tip of the ridge of the powdery material, and the scraping device is configured to generate a scraping signal every time there is an output from the scraping signal generator. A working quantitative dispensing device for powder and granular materials. (3) A pulse motor is adopted as the driving source of the endless road, and the ridge length measuring device is compatible with the pulse generator, a sensor that detects powdery objects on the endless road, and the powdery object detection time of this sensor. The device comprises a counter that counts the number of pulses from the pulse generator, and the calculation device calculates the number of unit pulses corresponding to the unit furrow length using the output from the counter and the distribution number, and the scraping signal generator calculates the number of pulses corresponding to the unit furrow length. 3. The quantitative dispensing device for particulate matter according to claim 2, wherein the signal generator is configured to enter a predetermined output state when the number of input pulses to the motor matches the unit pulse number. (4) The quantitative dispensing device for powder and granular material according to claim 2, wherein the scraping signal generating device is a unit movement distance measuring device that generates a scraping signal every time the endless path moves by a unit ridge length. (5) Claim 2, in which the driving source of the endless path is temporarily stopped when the device for scraping out powder and granular materials is in operation.
A quantitative dispensing device for powder and granular materials according to items 1 to 4.