JP2009012855A - Particulate matter filling method and particulate matter filling device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a particulate matter filling method which brings about measurement and filling procedure with sufficiently high accuracy while requiring only a short time for carrying out filling work, and to provide a particulate matter filling device for use in the method. <P>SOLUTION: According to the particulate matter filling method, particulate matter P is fed from a feeding means 1 to a measuring and filling means 2 at high speed, and at the same time the particulate matter P is fed to an auxiliary feeding means 3. Then after feeding the particulate matter in a predetermined amount by the feeding means 1, the feeding by the feeding means 1 is terminated, and subsequently the particulate matter P in a predetermined residual amount is fed by the auxiliary feeding means 3. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a powder filling method and a powder filling device.

Conventionally, high-precision filling to pack a predetermined amount of powdered granular products such as wheat flour, granular cereals, cement, cosmetic powder, granular drugs, etc. Machines and weighing devices are used. For example, as shown in FIG.
The filling method is as follows. When the granular material P is supplied at a high speed from the supply means 1 (screw feeder 5), and is metered by the filling and weighing means 2, and a predetermined amount of filling is performed, for example, the graph of FIG. As shown, when 80% of the total amount is completed, the screw feeder 5 is switched to a low speed operation, and the remaining amount is supplied at a low speed, thereby improving the filling accuracy and efficiency. The screw feeder 5 is stopped in anticipation of drop correction (dropping of the granular material P after stopping).

The following documents can be cited as such a technique.
JP2006-168776.

  In this way, considering the filling efficiency, there is a mechanical limit of the supply device (feeder etc.) to increase the ratio of high-speed supply and low-speed supply of the granular material properly, so that time can be reduced. If the size is increased, the accuracy is lowered. On the other hand, if a small size is used in order to increase the accuracy, there is a problem that it takes too much filling time.

  An object of this invention is to provide the filling method of the granular material which can perform sufficient highly accurate metering filling while performing filling operation | work for a short time, and the filling apparatus of the granular material used for this method.

In the present invention, the supply means 1 includes all known means for supplying powder and granular materials, such as a screw feeder, a vibration feeder, a belt conveyor, and a table feeder.
Moreover, the target granular material P includes all granular materials such as flour, granular cereals, cement, cosmetic powder, granular drugs, and the like.
As the weighing and filling means 2, the weight of the granular material P supplied to a bag or the like such as a load cell or a balance type weighing machine is detected, and the supply means 1 and the auxiliary supply means 3 are controlled based on the signal and initial setting data. It is something that can be done. The electrical control circuit itself may be a known one.

In order to achieve the above object, the method of filling a granular material according to the present invention is as follows.
It is a method for metering and filling a granular material in which the supplying means 1 stops when a predetermined weight is measured by weighing the granular material P supplied from the supplying means 1,
At the same time as supplying a predetermined amount of the granular material P from the supply means 1 to the metering and filling means 2, the granular material P is also supplied to the auxiliary supply means 3,
The supply of the supply means 1 is stopped after the supply of the predetermined amount by the supply means 1, and then, the auxiliary supply means 3 supplies the predetermined amount of the granular material P. Features.
The auxiliary supply unit 3 may be operated in advance between the start of the movement of the supply unit 1 and the supply of the predetermined amount. In short, the supply means 1 is that the supply is stopped after the predetermined amount of supply.

Moreover, in order to achieve the above object, the granular material filling device according to the present invention includes:
It comprises a supply means 1 for powder P, and a metering filling means 2 for receiving and weighing the powder P from the supply means 1, and weighing the powder P supplied from the supply means 1. A metering and filling device for a granular material configured to stop the supply means 1 when reaching a predetermined weight,
Auxiliary supply means 3 is provided in the supply path R of the granular material P from the supply means 1 to the metering and filling means 2,
After the supply of a predetermined amount by the supply unit 1, the auxiliary supply unit 3 is operated to supply a predetermined remaining amount.
The auxiliary supply unit 3 may be operated in advance between the start of the movement of the supply unit 1 and the supply of the predetermined amount. In short, the supply means 1 is that the supply is stopped after the predetermined amount of supply.

According to the present invention, there is an advantage that metering and filling with sufficiently high accuracy can be performed while performing the filling operation in a short time.
Since only the auxiliary supply means 3 is provided in the supply path R, this can be implemented by partially improving the apparatus.

In the method of the present invention, the supply from the supply means 1 to the metering and filling means 2 is preferably 80% or more and less than 99% of a predetermined weight.
Previously, it was a method of switching between high speed and low speed by means of a relatively large supply capacity supply means, so that high speed operation must be stopped early (about 80% of the preset weight) of a predetermined amount. Although it was difficult to control the supply amount, in the present invention, since the supply means 1 is stopped and the auxiliary supply means 3 is operated, a larger amount of supply can be performed at high speed, and the filling efficiency can be improved. Goes up.

In the apparatus of the present invention, it is preferable that the auxiliary supply means 3 is constituted by a small-diameter screw feeder 7 provided inside the drop chute 4 in the supply path R.
Since the auxiliary supply means 3 is configured by the small-diameter screw feeder 7 as described above, the entire configuration is compact, so that the auxiliary supply means 3 can be easily provided inside the drop chute 4 and can be easily controlled by rotating the screw feeder 7. It is easy to control the supply.
In addition, the auxiliary supply means 3 is provided with a drop chute 4, and the existing apparatus can be used as it is by partially improving the drop chute 4.

In the apparatus of the present invention, the supply from the supply means 1 to the metering and filling means 2 is preferably 80% or more and less than 99% of a predetermined weight.
Previously, it was a method of switching between high speed and low speed by means of a relatively large supply capacity supply means, so that high speed operation must be stopped early (about 80% of the preset weight) of a predetermined amount. Although it was difficult to control the supply amount, in the present invention, since the supply means 1 is stopped and the auxiliary supply means 3 is operated, a larger amount of supply can be performed at high speed, and the filling efficiency can be improved. Goes up.

Further, it is preferable that the auxiliary supply means 3 is composed of a vibration feeder 6 provided inside the drop chute 4 in the supply path R.
Since the auxiliary supply means 3 is configured by the vibration feeder 6 in this way, the overall configuration is compact, so that the auxiliary supply means 3 can be easily provided inside the drop chute 4 and also can easily control a small amount of supply.
In addition, the auxiliary supply means 3 is provided with a drop chute 4, and the existing apparatus can be used as it is by partially improving the drop chute 4.

A preferred embodiment of the method for filling a granular material according to the present invention and the apparatus for filling the granular material used in the method will be described in detail below with reference to FIGS.
On the basis of the method of metering and filling the granular material P supplied from the supply means 1, here, the fine powder of carbon and when the powdered granular material reaches a predetermined weight, the supply means 1 stops. To be done.
First, the granular material P is supplied from the supply means 1 to the weighing and filling means 2 at a high speed,
At the same time, a predetermined amount of the granular material P is supplied also to the auxiliary supply means 3.
Then, the supply of the supply unit 1 is stopped after the supply unit 1 supplies a predetermined amount, and then the auxiliary supply unit 3 supplies a predetermined amount of the granular material P.

When supplying the granular material P from the supply means 1 to the weighing and filling means 2 at a high speed, here, as shown in the graph of FIG. Detection (contrast with a predetermined set weight), and thereby the supply means 1 is stopped.
Thereby, a predetermined amount supply of a large amount of the granular material P can be performed at high speed.
Of course, the present invention can be implemented by stopping the supply means 1 by detecting a weight weight of 80% to 99% of a predetermined amount. Further, when stopping at 80% or less of the predetermined amount, the charging efficiency is lowered, but the present invention can be implemented.

And the granular material P is simultaneously supplied also to the auxiliary supply means 3, and supply of the granular material P from the auxiliary supply means 3 after that is enabled. The auxiliary supply means 3 is operated after the supply means 1 is stopped, and a small amount of supply is started for a weight of 5% of the remaining amount.
When the predetermined set weight is reached, the auxiliary supply means 3 is stopped.
In addition, in the final filling process, a drop correction, that is, a control that assumes the amount of fall of the granular material P after the operation of the auxiliary supply unit 3 is stopped, is performed. That is, the auxiliary supply means 3 is not operated until the final filling. In other words, the auxiliary supply means 3 is controlled to stop in anticipation of the head correction.

The filling apparatus of the granular material used for the said filling method is comprised as follows.
As shown in FIG. 1, the supply unit 1 basically includes a supply unit 1 for the granular material P, and a metering filling unit 2 that receives and measures the supply of the granular material P from the supply unit 1. When the granular material P supplied from is weighed and reaches a predetermined weight, the supply means 1 stops.

As shown in FIG. 1, the supply means 1 is provided with an agitator 1 </ b> B that stirs the granular material P below the hopper 1 </ b> A containing the granular material P, and includes a screw feeder 5 below the agitator 1 </ b> B. Has been.
The weighing and filling means 2 includes a sensor 2A for detecting the weight, in this case, a load cell, and inputs the detection result to the controller 2B, where it is compared with a predetermined weight and reaches a predetermined weight. Then, the control works so as to stop the screw feeder 5 of the supply means 1.

  Further, as shown in FIGS. 3 to 6, auxiliary supply means 3 is provided in the supply path R of the granular material P from the supply means 1 to the metering and filling means 2. Here, the auxiliary supply means 3 is constituted by a small-diameter screw feeder 7 provided inside the drop chute 4 in the supply path R. The trough 7A of the screw feeder 7 is open at the top, and is configured to receive and fasten the granular material P falling from above. In FIG. 3, 7B shows the drive motor of the screw feeder 7. FIG. The trough 7A may be selected in an appropriate shape regardless of whether the cross section is U-shaped or V-shaped.

  FIG. 5 shows a longitudinal section (a) and a transverse section (b) of the main part of the screw feeder 7 in a state where the powder P is fully filled, and FIG. 6 shows that the screw feeder 7 is driven. The longitudinal section (a) and the transverse section (b) of the main part of the screw feeder 7 in a state where the powder and granular materials P are reduced are shown.

With the above configuration, for example, when bagging the granular material P, a predetermined weight is determined, and when 95% of the weight is set, the supply unit 1 can speed up the granular material P to 95%. Supply and then stop.
At this time, the granular material P is also supplied to the small-diameter screw feeder 7 which is the auxiliary supply means 3 provided inside the drop chute 4 in the supply path R, and the granular material P stays in the trough 7A. Is done.

After the operation of the supply means 1 is stopped, the auxiliary supply means 3 is operated, and the granular material P of the trough 7A is sequentially sent out, and a small amount of filling with a remaining amount of 5% is started.
Then, when the intended weight (expecting the head correction) is reached, this is detected by the metering filling means 2, the auxiliary supply means 3 is stopped, and the filling is completed.

(Modification 1 of auxiliary supply means)
The auxiliary supply means 3 is composed of a vibration feeder provided inside the drop chute 4 in the supply path R. Vibration is caused by a vibrator. As this type of vibratory feeder, the granular material P is removed by vibrating the main body that receives the granular material P, and a known type of feeder may be used as appropriate.

  By configuring the auxiliary supply means 3 with a vibration feeder in this manner, the overall configuration is compact, so that the auxiliary supply means 3 can be easily provided inside the drop chute 4 and can be easily controlled in a minute amount. In addition, the auxiliary supply means 3 is provided with a drop chute 4, and the existing apparatus can be used as it is by partially improving the drop chute 4.

(Modification 2 of the auxiliary supply means)
The auxiliary supply means 3 is composed of a belt feeder provided inside the drop chute 4 in the supply path R.
By providing such a belt feeder, it is possible to supply a small amount by receiving a predetermined amount of the granular material P and controlling the drive while having a simple configuration.

  The present invention can be applied in the field of bagging or bottling various kinds of granular materials having a predetermined weight by measurement, and its application range is extremely wide.

It is a front view of the whole metering filling device of the granular material concerning the present invention. It is a graph which shows the measurement filling of the granular material which concerns on this invention. It is a vertical front view of the principal part of the measurement and filling apparatus of the granular material which concerns on this invention. It is a vertical side view of the principal part of the measurement and filling apparatus of the granular material according to the present invention. It is a vertical front view of the principal part which shows one action state of the auxiliary | assistant supply means of the metering filling apparatus of the granular material which concerns on this invention. It is a vertical front view of the principal part which shows one action state of the auxiliary | assistant supply means of the metering filling apparatus of the granular material which concerns on this invention. It is a front view of the whole metering and filling apparatus of the granular material which shows a prior art. It is a graph which shows the measurement filling of the granular material which shows a prior art.

Explanation of symbols

1: Supply means 2: Metering and filling means 3: Auxiliary supply means 4: Drop chute 5: Screw feeder 7: Screw feeder P of small diameter P: Powder and granular material R: Supply path

Claims (6)

It is a method for metering and filling a granular material in which the supplying means 1 stops when a predetermined weight is measured by weighing the granular material P supplied from the supplying means 1,
At the same time as supplying a predetermined amount of the granular material P from the supply means 1 to the metering and filling means 2, the granular material P is also supplied to the auxiliary supply means 3,
The supply of the supply means 1 is stopped after the supply of the predetermined amount by the supply means 1, and then, the auxiliary supply means 3 supplies the predetermined amount of the granular material P. A method for filling a granular material.   2. The method for filling a granular material according to claim 1, wherein the supply from the supply means 1 to the metering and filling means 2 is 80% or more and less than 99% of a predetermined weight. It comprises a supply means 1 for powder P, and a metering filling means 2 for receiving and weighing the powder P from the supply means 1, and weighing the powder P supplied from the supply means 1. A metering and filling device for a granular material configured to stop the supply means 1 when reaching a predetermined weight,
Auxiliary supply means 3 is provided in the supply path R of the granular material P from the supply means 1 to the metering and filling means 2,
The powder and particulate material metering / filling device is configured to operate the auxiliary supply means 3 to supply a predetermined remaining amount after supply of a predetermined amount by the supply means 1.   The metering and filling device according to claim 3, wherein the supply from the supply means 1 to the metering and filling means 2 is 80% or more and less than 99% of a predetermined weight.   5. The powdery granular material according to claim 3, wherein the auxiliary supply unit 3 includes a small-diameter screw feeder 5 provided inside a drop chute 4 in the supply path R. 6. Metering filling device.   6. The powder particle metering and filling device according to claim 3, wherein the auxiliary supply means (3) comprises a vibration feeder (6) provided inside a drop chute (4) in the supply path (R). .

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