JPS6017320A - Method for distributing and feeding granular body - Google Patents

Abstract

PURPOSE:To distribute granular body accurately and uniformly while improving the effeiciency of dividing operation by feeding the granular body for one dividing in twice. CONSTITUTION:An electronic measuring unit 8 for measuring the quantity of a medicine fed to a medicine scale 5 by lifting the scale held by a rotary table 4 to be rotated intermittently is set up to feed the medicine from the scale 5 to a medicine wrapping device 13 through a funnel 12. The total weight of the medicine in a hopper 9 is divided by the number of necessary division units to calculate the weight (y) per one dividing and the operation of a vibrator 11B and a gate pulse motor 11F of a driving feeder 11 is controlled by regarding a value obtained by subtracting a weight slightly larger than the over feeding quantity (a) of the driving feeder 11 from the weight (y) as the 1st feeding set value. A value obtained by subtracting the quantity fed in the 1st process and the over fed quantity from the weight (y) for one division is set up as the 2nd feeding set value.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention calculates the weight distributed per minute by dividing the total weight of powder and granular materials such as medicines stored in a hopper by the total number of necessary distributions, and The present invention relates to a method for distributing and supplying stored powder and granular material by the weight of the above-mentioned per minute distribution.

In the conventional powder and granular material distributing force/method, the driving supply device supplies the powder and granular material based on the detection signal when the amount of powder and granular material supplied from the drive supply device reaches the weight of the per minute distribution. A method of stopping the distribution valve was adopted, but in this case, the absolute flow velocity of the powder and granules at the time of stopping was also quite high because the powder and granules were supplied to the distribution valve all at once. In addition, due to the influence of the time lag between when the drive supply device receives all the supply stop commands and when the supply is actually stopped, the distribution error for each 7-minute payout becomes very large. Ta.

As a means to improve this drawback, it may be possible to set the supply amount per unit time by the drive supply device to a small value, but in this case, although the distribution error can be reduced, there is a large amount of time loss. There was a drawback that the distribution work efficiency was greatly reduced.

An object of the present invention is to make it possible to reduce the distribution error as much as possible while keeping the distribution work efficiency sufficiently high.

The characteristics of the method for distributing and supplying powder and granular material according to the present invention, which has been made to achieve the above object, are as follows (a).

The point is that the powder and granular material is distributed and supplied through the steps (b) and (c).

(a) Subtract an amount slightly less than the oversupply amount supplied from the time when the drive supply device (II) receives the supply stop command until the supply is actually stopped from the weight distributed per minute. The operation of the drive supply device (11) is controlled using the value obtained as the -th supply setting value.

(b) The value obtained by subtracting the fc amount supplied in the step (a) above from the weight of the minute distribution, and further subtracting the oversupply amount of the drive supply device (11) from this value is determined as the second supply setting value. As a result, the operation of the excitation supply device (11) is controlled.

(c) Measure the time required in the steps (a) and (b) above, and if this measured time is greater than the set time, the unit time of the drive supply device (+1) during the next distribution supply. Increase and control the supply amount per hit.

The functions and effects of the above characteristic method are as follows.

<Function> By roughly dividing one portion of powder and granular material and feeding it in two parts, the supply amount per unit time in the first stage is increased and the supply time M' is shortened. Also, it is possible to reduce the flow rate of the second stage supply per unit time, that is, to reduce the head error. Moreover, since the oversupply amount of the drive supply device is taken into consideration in each of the supply set values for the first stage and the second stage, errors caused by this oversupply can be eliminated or minimized as much as possible. Moreover, such distribution of powder or granular material can be efficiently performed by time control.

<Effects> Therefore, the efficiency of the dispensing work has been improved, and the powder and granules can be evenly distributed with high accuracy.

Hereinafter, embodiments of the method of the present invention will be described in detail based on the drawings.

First, a description will be given of a drug packaging machine used in a drug distribution and supply method, which is an example of a powder distribution and supply method.As shown in FIGS. 1 to 4, a stepping motor ( 2) A tape yv+4) is provided which can be rotated intermittently on a vertical axis (X) 8 which is interlocked via a double-gear reducer (3), and the rotating tape iv+41 is provided with the same interval in its rotational direction. The drug tray (5) is fixed and held in the upper rotating part of the opening (4a) formed with notches at four separate locations so that it can swing up and down around the entire horizontal axis (Y1 and can be detached upwards). A pair of retaining members (6) having V-shaped grooves.

(6), and at the bottom of the oil rotary table (4), a drug tray (
5) An arc-shaped cam (7) that comes into contact with the bottom button of the medicine tray (5) to hold it in a fully horizontal position, and
5) and the holding members +61 and +6+, lift the drug tray (5) and remove the drug tray (5).
An electronic measuring device (8
) has been established.

Powdered medicines, granular medicines, etc. whose total weight has been electronically weighed in advance at another location are placed beside the rotation path of the rotary table (4) at a location corresponding to the electronic weighing device (8). Hoppers +91, +91 to store and the medicine tray (
5), drive supply devices (11) and 111'il- for supplying chemical gold via a vibrator chute system in each hopper +91 and +91 are provided.

As shown in FIG. 2 and FIG. 5, the drive supply device circle includes a shoe (IIA), a vibrator (IIB) that applies vibration to the shoe, and a vibrator (IIB) that slides open and close in the distance direction relative to the shoe (IIA). Free Water Gate 2 Game) (
(IIC) and the shoe) (IIA), which is equipped with a pulse motor (11F) that can adjust the opening degree of the game (IIC) through a full worm (IID) and a rack (IIE), and is operated by the vibrator (IIB). By changing the frequency of vibration and the number of pulses of the pulse motor (IIF), the amount of medicine supplied per unit time can be adjusted to increase or decrease.

Further, the electronic measuring device (8) of the arcuate cam (7)
For [1, 1, a notch is formed in the part displaced by 1 gO degree in the rotational direction 1, 7, and the drug receiving tray (5) that has arrived at this location is switched from the entire drug receiving posture to the drug falling supply posture tilted downward. A medicine packaging device 03) is provided which swings and automatically sequentially packages medicines dropped and supplied from the medicine receiving tray (5) through the funnel α2 into a packaging bag.

The drug packaging device C[31 is configured as follows.

That is, as shown in FIGS. 1, 2, and 6, continuous strips of wrapping paper α4), [15)'! A reel shaft am (17) for winding up each roll is installed so that it can be coated freely, and the rolled wrapping paper 0 (a), (151) is passed through a funnel 0
2), the guide row /l' (181...) and the rolled wrapping paper (1
41.

Feed row forcibly transferring the mouth 5) vO”j, 19)
In addition to providing the roll-shaped wrapping paper 041,
On both sides of the vertical feed path portion of ++51, there are cams in the h, which are urged to move elastically in the direction of separation from each other and are interlocked with the motor Q through a reducer with a clutch brake (2I). A seal heating plate (241) and a pressure bonding rubber plate (A) are provided opposite to each other, which can be switched to a thermal welding position in which they are in contact with each other by driving rotation.

Next, a method for dispensing and supplying medicine using the medicine packaging machine configured as described above will be explained.

(b) Detection signal of the electronic measuring instrument (8) and hopper = +
In a microcomputer to which signals such as the measured total weight of drugs to be put into hoppers 9+ and 9+ are input, the total weight of drugs stored in hoppers 91 and 91 is divided by the required number of distributions. Weight of y (y
) > In addition to calculating, the over-supply 1fal that is supplied between the time when the drive supply device (11+ receives the supply stop command and the time when the supply is actually stopped) also divides a little more i into the above-mentioned minute. The value (for example, o, ty) subtracted from the weight fyl of y2 is used as the first supply setting value to control the operation of the vibrator (IIB) and pulse motor (IIF) of the drive supply device α1) 3. Calculation for this operation control To give an example of the formula, supply conditions of the drive supply device (11) volume of the vibrator (IIB) tv+ = 0 ~
g (frequency) Control pulse number of pulse motor (IIF) (p) = 0 ~
lI o.

Judgment of drug properties (sw) 8 - Granular, well-flowing powder B = medium viscosity C = viscous material Supply time /sec = /20TC rotary tachometer) First supply setting value y x 0. Otsu xvXxpXsw+a=O+Otsuy+a=O,g
ay (b) The weight of the above-mentioned one-minute distribution (yl to m) The amount supplied in the step (a) above (for example, 0.8!; y
) f subtract, and further this value (for example, 0.7!ry)
to the oversupply amount of the drive supply device (11) (for example,
a' = 0.0! ;y') minus the value (for example,
0. /y) as the second supply setting value and the drive supply device (Il
l's biplay A 11 B > and parnu motor (I
IF) Controls all operations.

An example of a calculation formula for this operation control is as follows: Second supply set value 0. /y xvXxpXsw+a'=0. /3~0.15y Therefore, o, gsy at the time of the first supply and 0.73~ at the time of the second supply
0.7! ;y and the sum (0.9za~/, Oy) becomes the amount of medicine actually supplied to the saucer (5).

Note that the drug supply amount per unit time of the drive supply device ill when the operation is controlled based on the second supply setting value is greater than the drug supply amount per unit time when the operation is controlled based on the first supply setting value. Set to small.

(/-) Time required for steps (a) and (b) in @
tl', and this measurement time it) is the set time [for example, as shown in the calculation table below, at the time of the first supply,
(7 seconds), and during the second supply, OTC0.3 seconds], the drive supply device (111) automatically increases the drug supply amount per unit time during the next dispensing supply. .

For example, in the calculation table, the supply condition is that the number of durams per bag is 0.
5-0. When the property of the drug is A, and the time required for the first supply of the -color is t〉/2Or, when the second supply of the second color is performed, the drive supply device is automatically increased from the rank to the B rank. The control conditions and the opening amount of (IIC) are increased to maintain the relationship t<7.20T.

In addition, if the time (1) required for the first supply is too short, the tsukuda control conditions of the drive supply device fil) will be automatically lowered/ranked, and the (11 (opening movement of j) will be completely reduced). Correct the relationship of t〈/20T.

In addition, if a mixed drug of granules and powder is put into the hopper (9) and there is a possibility that the granules and powder will separate when fed by driving, the granule and powder drugs should be transferred to both hoppers. The hoppers are stored separately in hoppers +91 and +91, respectively, and the drive supply devices (11+, 01) connected to both hoppers +91 and +91 are alternately controlled.

(b) Equal distribution correction Measure the total weight of the drug in the hopper (9) for each desired distribution unit, and calculate the remaining amount from this measured total weight.

For example, the number of packages is 172/the amount of medicine supplied per package O, wog ~/, Og average = 0. Love g.

<First modification> Total weight 112g - 0.9g X, 2/bag = 27.
27g New supply setting value y = 2/, 2/g + 2 /package = 〇/g <Second modification> Total weight 2/, 27g-/, 01g X /S package =
t, 0g new supply setting value y = ot, otg+=/
, 07g In the above embodiment, the amount of medicine supplied by the drive supply device Qll is controlled to the first supply setting value (for example, 0./y) and the second supply setting value (for example, 0./y). In this case, a control system was configured based on the detection result of the electronic measuring device (8), but instead of this, the operating time of the drive supply device 01+ until the set value is reached is measured, The drive supply device (111) may be configured to perform braking control based on this time. In this case, the influence of the time lag until the electronic measuring device (8) weighs and transmits its detection signal is minimized as much as possible. It has the advantage of being small.

Further, part of the above-mentioned embodiment may be modified as follows.

(a) When dispensing and supplying one type of drug, or when it is possible to mix and dispense a plurality of types of drugs without separation, only - number of the hoppers (9) are provided.

(b) As shown in Figure 7, mI hopper +91,
[9] All rotating tapes/l'+41 are provided at appropriate intervals in the direction of rotation. In this case, an electronic scale (
8) are required.

FIG. 8 shows an overall schematic diagram of an example of a drug packaging machine equipped with the drug distributing and supplying means as described above. Finally, there is a city weigher (10) that detects the total weight, and a microcomputer display/operation unit (
b) and ff: At the same time, there is a drug packaging f at the bottom.
Drug sachet pack belt IA sent out from f1131
J's outlet □□□ is formed.

[Brief explanation of drawings]

1 to 6 show a drug packaging machine used in the drug distribution and supply method of the present invention [7, FIG. 1 is a longitudinal sectional front view, FIG. 2 is a partially cutaway side view, and FIG. 8 is a plan view; FIG. 4 is an enlarged sectional view of the drug receiving tray, and FIG. 5 is an enlarged sectional view of the main parts of the drive supply device. FIG. 6 is a perspective view of the main parts of the drug packaging device. 7th
8 are a plan view and a perspective view showing different embodiments, respectively. (9) Hopper, αD... Drive supply device.

Claims (1)

[Claims] ■ Calculate the weight t for dispensing per minute by dividing the total weight of the powder and granules stored in the hopper (9) by the required number of distributions. 01) A method for distributing and supplying stored powder and granular material according to the above-mentioned per minute weight while controlling the operation of the drive supply device 01), which comprises the following steps (a), (b) and (c) Powder distribution and supply method that distributes and supplies the entire powder and granule material. (a) An amount slightly larger than the oversupply amount that is simultaneously supplied between the time when the drive supply device 111 receives the supply stop command and the time when the supply is actually stopped. The subtracted value is set as the first supply setting value,
The operation of the drive supply device GJI is controlled. (b) Subtract the total f# supplied in the step (a) above from the weight of the per minute distribution in 111, and further subtract the oversupply amount of the drive supply device α1) from this value for the second supply. The drive supply device (!1) is actuated and controlled as a set value. (c) Measure the entire time required in the steps (a) and (b) above, and if this measured time is longer than the set time, calculate the amount of time per unit time of the drive supply device 011 during the next distribution supply. supply @total increase control. (2) The supply amount per unit time during the second supply by the drive supply device (111) is set to be smaller than the supply amount per unit time during the first supply. The method for distributing and supplying powder or granular material according to claim 0 or 0, wherein the powder or granular material is a drug.