JP2001041808A - Method and device for subsection - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate wasting material caused by delivering excessive amount by suppressing short-time and long-time variations in weight of subsections delivered in a measurement vessel for a constant volume. SOLUTION: A measurement vessel 23 comprising a volume change mechanism 25, a weighing part 41 which measures the weight of a subsection Sn delivered with the measurement vessel, and a calculator 5 which outputs a volume control signal to the volume change mechanism 25 of the measurement vessel 23, are provided. Here, the calculator 5 uses a group average calculation part which a subsection weight is divided into succeeding a plurality of groups for calculating an average in the group, a movement average-calculation part which samples succeeding a plurality of subsection weights at a given interval for calculating the succeeding moving average, a group average, and a moving average, to output a volume control signal which so changes the volume of the measurement vessel 23 that the subsection weight approaches a control target value to the volume change mechanism.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention suppresses short-term and long-term variations in the weight of subdivided products divided into small volumes by a measuring container, and eliminates waste of articles due to an excessive increase in subdivision. The present invention relates to a subdivision method and a subdivision apparatus which can be used.

[0002]

2. Description of the Related Art Large quantities of bulk products such as granular detergents are divided into small volumes by a measuring container and filled into a retail container, and the amount of the divided product is set to a predetermined net weight (hereinafter simply referred to as "net weight"). Weight)). As described above, for example, the following subdivision apparatus has been used for subdividing articles of which the volume is subdivided and the quantity is controlled by the target value of the weight. This subdivision apparatus has, for example, about twelve volume-changeable weighing containers equal to the number of cardboard boxes stored in the retail container mounted on a rotating disk, and slid the bulk product from a hopper into individual rotating weighing containers. Filling
After filling, the bottom of the weighing container is opened, and the small articles in the weighing container flow into the retail container. This sub-packaged product in a retail container must have a (net) weight satisfying the standard value at the time of shipment.

[0003] Generally, the weight of each of a plurality of subdivided products divided into a fixed volume by repeatedly using a plurality of weighing containers is determined by fluctuations in bulk density at the time of filling of bulk products, habits of the subdivision apparatus, and trends over time. Variations are unavoidable due to factors such as: If this variation is excessive, rejected products exceeding the weight management limit will be generated, so in advance, set a management target value of the subdivision weight by adding a slight increment to the weight standard value,
In addition, in order to suppress the variation, the weight of the subdivided articles stored in each small box is measured, and the weight of one rotation of the rotating disk (12 pieces in the above example) is regarded as one group. An average value is obtained, and the volume of the weighing container is controlled so that the group average value matches the management target value. According to this method, the data of the group average value for one rotation of the rotating disk (for 12 rotations) is immediately fed back to the control of the group average value of the next group. Can be suppressed to some extent.

[0004]

However, in the conventional control method, the mechanical volume changing means of the measuring container cannot follow the electronic volume changing command at the time of high-speed operation, and the variation cannot be completely corrected. There was a case. Further, in the above-described control in units of groups, it is not possible to suppress a long-term variation in the weight of the subdivided products over a long operation period. The cause of the long-term variation is that during the long-time operation by the subdivision device, the bulk density of the bulk serving as a supply source fluctuates, and the operation state of the subdivision device or the measuring instrument changes over time. For example, the capacity / weight conversion rate gradually changes. Conventionally, in order to cover such a long-term variation, the management target value of the subdivision weight is set to be considerably higher than the standard weight standard value. As a result, in general, the weight of each subdivided product in the subdivision container becomes considerably excessive than the weight standard value, and the excess is a considerable loss. SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and therefore has an object of subdividing articles whose volume is controlled according to a predetermined target weight value. In this regard, it is an object of the present invention to provide a subdivision method and a subdivision apparatus that suppress short-term and long-term variations in subdivided product weights and reduce useless increase by bringing a management target value of the subdivided weight close to a standard weight value.

[0005]

In order to solve the above-mentioned problems, according to the present invention, the present invention is characterized in that,
When subdividing an article whose quantity is controlled by a predetermined weight management target value, a subdividing step of qualitatively subdividing the article using a weighing container capable of changing the volume, and the weight of the subdivided product. And a grouping step of dividing the plurality of divided product weights measured in the weighing step into a plurality of subsequent groups, and calculating an average value of the divided product weights in each of the groups. A group average value calculating step, a sampling step of sampling a plurality of subsequent divided product weights measured in the weighing step at predetermined intervals, and a moving average value calculating a subsequent moving average value of the sampled divided product weights Step, using the group average and the moving average,
A volume control step of changing the volume of the weighing container so that the weight of the subdivided product approaches the management target value.

In the above-mentioned subdivision method, the group average value reflects the variation of the subdivided product weight from the control target value within a relatively short-term range, and the moving average value is a long-term value from the start of operation to the present time. It reflects the tendency of variation in the weight of subdivided products. Therefore, if the volume of the weighing container is controlled so that the weight of the subdivided product approaches the control target value by using both the group average value and the moving average value, only the short-term variation in the group unit is suppressed as in the related art. In addition, long-term variations due to fluctuations in the bulk density of the bulk and changes in the operating conditions of subdivision devices and measuring instruments over time can be suppressed. The set management target value can be made closer to the weight standard value, and loss due to an increase in the number of articles at the time of subdivision can be greatly reduced.

In the volume control step, the deviation of the moving average value calculated for each of the samplings from the management target value is sequentially accumulated, and the obtained cumulative deviation value is added to the management target value to add the moving target value. Is preferably generated, and the volume of the weighing container is changed such that the group average value matches the movement target value.

Here, the cumulative deviation value is an index indicating the tendency of the deviation of the moving average from the management target value at the present time, and the value obtained by correcting the management target value using this index as a correction term is the moving target value. . Therefore, if the volume of the weighing container is changed so that the group average value calculated at the present time matches the moving target value, the weighing is performed so that the short-term variation and the long-term variation at the present time are simultaneously eliminated. The volume of the container is controlled. In addition, even if the volume changing means of the measuring container cannot completely follow the volume change command during high-speed operation, long-term variations are eliminated, so that variations as a whole can be reduced.

In the volume control step, a non-control range is set above and below the movement target value, and only when the group average value is out of the range of the non-control range, the group average value is set to the movement target value. It is preferable to change the volume of the weighing container so as to coincide with the following.

If an attempt is made to control the volume of the weighing container in spite of the fact that the group average value is equal to or close to the moving target value, the volume changing means may malfunction and increase the variation. In order to prevent this malfunction, it is preferable to provide a non-control range above and below the movement target value, and do not operate the volume changing means of the measuring container when the group average value is within the range of the non-control range. .

According to a fourth aspect of the present invention, there is provided a weighing container having a volume changing means, a weight measuring means for sequentially measuring the weight of the subdivided products divided into a constant volume by the weighing container, and the weight measuring means. Calculating means for inputting the measured weight of the divided product and outputting a volume control signal to the volume changing means of the weighing container, wherein the calculating means is measured by the weight measuring means in the group average value calculating section. A grouping device for dividing the plurality of subdivided product weights into a plurality of subsequent groups, and a group average value calculating device for calculating an average value of the subdivided product weights in each of the groups. A sampling device for sampling at a predetermined interval the weight of a plurality of subsequent divided products measured by the weight measuring means, and a sampled divided product weight. And a a subsequent moving average calculation unit calculating a moving average value, and the volume control unit,
Using the group average value and the moving average value, a volume control signal generation device that generates a volume control signal that changes the volume of the weighing container so that the subdivided product weight approaches the management target value, and And a control signal output device for outputting the volume control signal to the volume changing means.

In this subdivision apparatus, the calculating means changes the volume of the weighing container using the group average value and the moving average value in the volume control unit such that the weight of the subdivided product approaches the management target value. Since a volume control signal to be generated is generated and output to the volume changing means, not only short-term variation in a group unit can be suppressed, but also long-term variation can be suppressed. The management target value set higher can be made closer to the weight standard value, and loss due to an increase in the number of articles at the time of subdivision can be greatly reduced.

In the above, the volume control section sequentially accumulates deviations of the moving average value calculated for each sampling in the moving average value calculation section from the management target value,
A moving target value generating device that generates a moving target value by adding the obtained accumulated deviation value to the management target value, and the volume control signal generating device is configured such that the group average value matches the moving target value. Thus, it is preferable to generate a volume control signal for changing the volume of the measuring container. Thereby, the volume of the measuring container can be changed so that the short-term variation and the long-term variation at the present time are simultaneously eliminated.

In the above, the volume control unit has a non-control range setting device for setting a non-control range above and below the movement target value, and the control signal output device sets the group average value to the non-control range. It is preferable to output the volume control signal only when it is out of the range. In this case, since the volume control signal is not output when the group average value is equal to or close to the movement target value, it is possible to prevent the variation due to the malfunction of the volume changing means from increasing.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows an embodiment of a dispensing apparatus for dispensing and packing a granular detergent from a source bulk S0 into small boxes C0 for retailing at a constant weight.
In FIG. 1, this subdivision apparatus generally comprises a hopper 1 as a supply source containing a bulk S0 of granular detergent, a rotating subdivision 2, a conveyor 4 for transporting a small box C0, and an arithmetic unit 5. .

The hopper 1 has a structure in which the bottom opening 11 is adjusted by a gate valve so that the amount of the granular detergent accumulated on the upper disk 21 of the subdivision 2 is optimized, and is accommodated in the hopper. The bulk S0 of the granular detergent is prevented from flowing out from the bottom opening 11 by the granular detergent already supplied from the hopper 1 onto the upper disk 21 and accumulated. The subdivision table 2 has twelve openings 22 formed along the circumference of the upper disk 21, and a measuring container 23 is mounted below each of the openings 22. As shown in FIG. 2, the measuring container 23 includes an inner cylindrical portion 231 extending below the opening 22, and an inner cylindrical portion 231.
1 and an outer cylindrical portion 232 which can slide up and down. The outer cylindrical portion 232 has an opening / closing lid 233 provided at an inclined bottom thereof and a funnel-shaped outlet 234 provided below the outer cylindrical portion 232, and the granular detergent filled in the measuring container 23 has: Discharge port 234 when opening / closing lid 233 is opened
It flows down the slope.

The inner cylinder portion 231 is supported by an upper disk 21. The upper disk 21 can be moved up and down by a volume changing mechanism 25 driven by the computer 5, and the vertical movement causes the weighing container to move. 23 can be collectively changed. A guide plate 27 and a cutting plate 26 are provided on the upper surface of the upper disk 21.
Is rotated, the guide plate 27 guides the granular detergent accumulated above a certain height to the peripheral portion of the upper disk, and the sliding plate 26
Makes the pile height constant, and when the measuring container 23 reaches the upper part of the empty small box C0...
Opens to discharge the granular detergent into the small box C0.

The conveyor 4 arranges empty small boxes C0... In one row and transports them in one direction. The small box C0 placed on the conveyor 4 is sent below the measuring container 23n sent to a specific position along with the rotation of the upper disk 21, and the granular detergent subdivided from the measuring container 23n is sent to this small box. The small boxes Cf, which have been flowed in and filled, are conveyed to a cardboard box packaging step via a lid attaching step (not shown). The conveyor 4 has a weighing section 41 for weighing a small box Cf filled with the subdivided products Sn.
The weight Wt of the subdivided product Sn including the tare weighed in step 1 is
Each time it is weighed, it is sent to the computer 5.

As shown in FIG. 3, the arithmetic unit 5 comprises a subdivision weight calculator 51 and a group average calculator 52.
, A moving average value calculation unit 53, and a volume control unit 54, each of which has the following configuration. [Subdivision weight calculating device 51] When the weight Wt of the subdivision product Sn including the tare is digitally input from the weighing unit 41, the weight (subdivision weight) Wn of each subdivision product Sn is subtracted by subtracting the pre-input tare weight Wc. calculate. Information on the calculated subdivision weights Wn...
And the moving average value calculation unit 53.

The group average value calculation section 52 [grouping device 521]
Grouping is performed in accordance with one rotation (12 measuring containers) of the upper disk 21. Therefore, 12
Each sub-weight Wg is included. [Group average value calculation device 522] The average value (group average value) MG of the subdivision weights Wg within the one group is calculated.

Moving average value calculation section 53 [Sampling device 531] From the sequence of the subdivision weights Wn calculated by the subdivision weight calculation device 51 from the start of operation to the present time, the subdivided product weights Ws are sequentially determined at predetermined intervals. Is sampled. This sampling may be performed at regular intervals, for example, once every two minutes, or may be performed on a group basis, for example, one for every four groups. The interval may be changed in the middle. [Moving Average Calculation Device 532] The moving average MS of the sampled divided product weights Ws... From the start of operation to the present time is calculated.

The volume control unit 54 the volume control unit 54, the group average value calculating section 52
And the moving average calculating section 53
The moving average value MS is input from each of them, and the calculated average is used to calculate the moving average value MS.
The volume of the measuring container 23 is changed so as to approach W. The volume control unit 54 includes a volume control signal generation device 54
1, a control signal output device 542, a movement target value generation device 543, and a non-control area setting device 544.

[Moving Target Value Generating Device 543] The moving average value MS input from the moving average value calculation unit 53 for each sampling is compared with a management target value TW input in advance, and the current sampling value is used for each sampling. The deviation δs of the moving average value MSs at the point in time from the control target value TW is calculated by the following equation δs = TW−MSs, and this value is added to the moving target value CWs−1 obtained by the previous sampling, and this movement is performed. Target value C
Find Ws. However, the movement target value CW1 obtained by the first sampling is the management target value TW. That is, the movement target value CWs at each sampling time is obtained by the following equation each time. Therefore, continued sampling, movement target value CWs in the current sampling time is determined by calculating the following equation (1), the movement target value CWs = management target value TW + deviation accumulated value sigma ₁ ^s .delta.s ... (1). Obtained moving target value CWs
Are output to the volume control signal generation device 541 and the non-control area setting device 544, respectively.

[Volume control signal generation device 541] The current group average value MG input from the group average value calculation section 52 is compared with the current movement target value CWs input from the movement target value generation device 543. Then MG> CW
If s, a volume control signal V for reducing the volume of the measuring container 23 is generated until MG = CWs. If MG <CWs, a volume control signal V for increasing the volume of the measuring container 23 is generated until MG = CWs.

[Non-Control Area Setting Device 544] The movement target value CWs is input from the movement target value generation device 543, and a predetermined non-control range F is added above and below the movement target value CWs if necessary. Set F). The set non-control area (CWs ± F) is output to the control signal output device 542.

[Control Signal Output Device 542] The volume control signal V generated by the volume control signal generation device 541 is output to the volume changing mechanism 25. However, when the non-control area (CWs ± F) is input from the non-control area setting device 544, the group average MG is larger than (CWs + F), or the group average MG is smaller than (CWs-F). Only in this case, a volume control signal V is output to the volume changing mechanism 25. Therefore, the volume of the measuring container 23 is such that the group average value MG is in the non-control region (CW
s ± F) is not changed. This prevents the variation due to the malfunction of the volume changing mechanism 25 from increasing.

A monitor 6 is connected to the arithmetic unit 5. On the monitor 6, the weighing number n of the small box Cf, the transition of the group average MG, and the movement average MS of the small box Cf from the start of operation to the present time. The transition, the transition of the standard weight value BW, the management target value TW, the transition of the movement target value CW, and the transition of the variation of the subdivision weight Wn are displayed.

This subdivision device can be operated according to the following procedure. Prior to the operation, the arithmetic unit 5 stores the weight standard value BW, the control target value TW, and the tare weight Wc of the subdivided product.
And the non-control range F are input. The volume changing mechanism 25 is appropriately adjusted in consideration of the bulk density of the granular detergent to be subdivided, and the volume of the measuring container 23 is adjusted so that the granular detergent having a weight close to the management target value TW can be filled.

(1) First, the bulk S of the granular detergent is placed in the hopper 1.
0 is supplied, the opening degree of the gate valve in the bottom opening 11 is made constant, and the granular detergent in the hopper is caused to flow continuously into the enclosure of the guide plate 27 of the subdivision 2 at a constant flow rate. The bulk S0 in the hopper is appropriately replenished so as not to run out of supply during operation. (2) The subdivision table 2 is rotated, and the granular detergent accumulated on the upper disk 21 at a certain height or higher is guided to the peripheral portion of the upper disk by the guide plate 27 and filled in the measuring container 23. 2
In step 6, the deposition height is made constant, and the volume of the granular detergent filled in the measuring container is made constant.

(3) The conveyor 4 on which the empty small boxes C0 are placed is operated, and when one small box C0 reaches immediately below the measuring container 23n filled with the granular detergent, The opening / closing lid 233 (FIG. 2) is opened, and the granular detergent (subdivided product) Sn in the measuring container 23n flows down into the small box and is filled. (4) The small boxes Cf... Filled with the subdivided products Sn are weighed through the weighing section 41 of the conveyor, and then conveyed to a cardboard box packaging step via a lid attaching step (not shown).

(5) The weight Wt of the subdivided product Sn including the tare weighed by the weighing section 41 is sent to the arithmetic unit 5 as digital information every time the weighing is performed. (6) The calculator 5 calculates the subdivision weights Wn in the subdivision weight calculator 51. This subdivision weight Wn ...
It is sent to the group average value calculation unit 52 and the moving average value calculation unit 53 in the arithmetic unit.

(7) In the group average value calculation section 52, the grouping device 521 determines the subdivision weights Wn.
Are grouped by one rotation, that is, every twelve rotations. The group average value calculation device 522 calculates the group average value MG and outputs it to the volume control signal generation device 541 of the volume control unit 54. (8) In the moving average value calculation section 53, the sampling device 5
31 sample the subdivision weights Wn in accordance with a predetermined rule (for example, one every two minutes after the start of operation, but one every four minutes after the elapse of 40 minutes), and sampled subdivision weights Ws Are calculated by the moving average value calculating device 532, and the obtained moving average value MS is output to the moving target value generating device 543 of the volume control section 54.

(9) In the volume control section 54, first, the movement target value generation device 543 sends the management target value T
Using W, the current movement target value CWs is calculated by the equation (1), and is output to the volume control signal generation device 541 and the non-control area setting device 544, respectively. (10) The volume control signal generation device 541 compares the input group average value MG with the movement target value CWs,
MG = CW if MG> CWs or MG <CWs
A volume control signal V that changes the volume of the measuring container 23 so as to be s is generated and output to the control signal output device 542.

(11) The non-control range setting device 544 sets a non-control range (CWs ± F) by adding a previously input non-control range ± F above and below the input movement target value CWs. , To the control signal output device 542. (12) The control signal output device 542 compares the input group average value MG with the non-control region (CWs ± F),
When (MG> CWs + F) or (MG <CWs−F), the volume control signal V is output to the volume changing mechanism 25. Volume change mechanism 2 receiving volume control signal V
5 changes the volume of the measuring container 23 so that MG = CWs in accordance with the volume control signal V.

Although the above embodiment is directed to subdivision of granular detergent, the subdivision method and subdivision apparatus of the present invention are as follows.
The present invention can be applied to any of fluids, powders, granules, tablets, lumps, molded products, processed products, and the like as long as the products are subdivided in a measuring container and controlled by weight. Sampling of the weights Ws... Of the divided products in the moving average value calculation unit 53 may be performed at regular intervals, at regular intervals of the divided products, or at regular intervals of the group. In some cases, the weights Ws. May be sampled.

(Example 1) Using the subdivision apparatus and operating procedure of the above embodiment, subdivision of the granular detergent was performed under the following conditions. Weight standard value BW of subdivided product Sn = 1050 g Management target value of subdivided filling amount TW = 1052 g Non-control range F = ± 2 g Number of operation groups Gn = 100 Sampling rule in sampling device 531: 2
1 per minute, but once every 40 minutes, 1 every 4 minutes
Pieces. During the running test, the bulk density of the granular detergent bulk was 864.
It varied within the range of 72 g / l to 870.8 g / l. The operation result is the deviation D of the subdivision weight Wn with respect to the control target value TW, the subdivision increase average value M100 for 100 groups.
, And standard deviation σ for 100 groups. Table 1 shows the results.

[0037]

[Table 1]

Example 2 The same operation as in Example 1 was performed except that the non-control area setting device 544 was not operated and the non-control area (CWs ± F) was not set, and the results shown in Table 2 were obtained. Was.

[0039]

[Table 2]

(Comparative Example 1) The moving target value generating device 54
3 was operated in the same manner as in Example 1 except that the control target value TW was used instead of the movement target value CWs, and the results shown in Table 3 were obtained.

[0041]

[Table 3]

From the above results, the subdivision apparatus and subdivision method according to the first embodiment using the moving target value CWs instead of the management target value TW are the conventional subdivisions using the management target value TW to correct the group average value MG. It can be seen that the standard deviation σ is significantly reduced as compared with the apparatus and the subdivision method (Comparative Example 1), and the variation in subdivided product weight is improved. Therefore, according to the first embodiment, the difference between the weight standard value BW and the management target value TW can be shortened, and the loss of articles due to an increase in the amount at the time of subdivision can be reduced as compared with the related art. In the non-control area (CWs ±
Embodiment 2 in which F) is not set is Embodiment 1 in which this is set.
Since the standard deviation σ is further increased, the effect of providing the non-control region in the first embodiment is recognized.

[0043]

The subdivision method and subdivision apparatus of the present invention use both the group average value and the moving average value to change the volume of the weighing container so that the subdivided product weight approaches the control target value. In addition, short-term and long-term variations in subdivided product weight are suppressed. Therefore, the management target value of the subdivision weight can be made closer to the weight standard value, thereby reducing the loss caused by increasing the number of articles at the time of subdivision.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a subdivision device of the present invention.

FIG. 2 is a cross-sectional view of the measuring container in the embodiment.

FIG. 3 is a configuration diagram of an arithmetic unit in the embodiment.

[Explanation of symbols]

 1: Hopper 11: Bottom opening 2: Subdivision table 21: Upper disk 22: Opening 23, 23n: Measuring container 231: Inner cylinder 232: Outer cylinder 233: Opening / closing lid 234: Spout 24: Lower disc 25: Change volume Mechanism 26: Slicing plate 4: Conveyor 41: Weighing unit 5: Calculator 51: Subdivision weight calculation unit 52: Group average value calculation unit 521: Grouping unit 522: Group average value calculation unit 53: Moving average value calculation unit 531 : Sampling device 532: Moving average value calculation device 54: Volume control unit 541: Volume control signal generation device 542: Control signal output device 543: Moving target value generation device 544: Non-control area setting device 6: Monitor S0: Bulk Sn: Subdivision C0, Cf: Small box Wt: Tare weight Wc: Tare weight Wn, Wg, Ws: Subdivision weight MG: Group average value MS MSs: the moving average value BW: Weight standard value TW: management target .delta.s: deviation V: volume control signal F: Non-control range

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2F046 BA02 DA06 FA02 FA03 3E018 AA03 AB03 BA05 BB01 BB05 DA02 DA04 EA01 3F075 AA08 BA09 BB05 CA06 CB01 CB03 CB06 CB11 CB15 CC08 CC23 CD14

Claims (6)

[Claims] 1. A method according to claim 1, further comprising the steps of: (1) dispensing a plurality of articles whose volume is controlled by a predetermined weight management target value; Subdividing step; a weight measuring step of sequentially measuring the weight of the divided subdivided articles; a grouping step of dividing the plurality of subdivided article weights measured in the weight measuring step into a plurality of subsequent groups; A group average value calculating step of calculating an average value of the weights of the divided products in the group; a sampling step of sampling a plurality of subsequent divided products measured at the weight measuring step at predetermined intervals; and a sampled weight of the divided products. Moving average value calculating step of calculating a subsequent moving average value of the group average value and the moving average value By using the average value, aliquoted wherein said dispensing product weight and a volume control step of changing the volume of the metering container so as to approach to the management target value. 2. The volume control step sequentially accumulates deviations of a moving average value calculated for each sampling from the management target value, and adds the obtained accumulated deviation value to the management target value to add a moving target. The subdivision method according to claim 1, wherein a value is generated, and the volume of the weighing container is changed so that the group average value matches the movement target value. 3. The volume control step includes setting a non-control area above and below the movement target value, and only when the group average value is out of the range of the non-control area, the group average value is shifted. The subdivision method according to claim 2, wherein the volume of the weighing container is changed so as to coincide with a target value. 4. An apparatus for subdividing articles which are volumetrically divided and whose quantity is controlled by a predetermined weight management target value, comprising: a measuring container having a volume changing means; Weight measuring means for sequentially measuring the weights of the divided products divided into a plurality of parts by volume, and inputting the weight of the divided products measured by the weight measuring means, and outputting a volume control signal to the volume changing means of the measuring container. A calculating device, the calculating device comprising: a grouping device for dividing the plurality of divided product weights measured by the weight measuring device into a plurality of subsequent groups in a group average value calculating section; A group average value calculating device for calculating an average value of the divided product weights, wherein a moving average value calculating unit calculates a plurality of successive divided product weights measured by the weight measuring means. A sampling device for sampling the amount at predetermined intervals, and a moving average value calculating device for calculating a subsequent moving average value of the sampled divided product weight, and a volume control unit, wherein the group average value and the moving average And a volume control signal generating device that generates a volume control signal that changes the volume of the weighing container so that the subdivided product weight approaches the management target value, using the volume control signal to generate the volume control signal. And a control signal output device for outputting to the changing means. 5. The volume control unit sequentially accumulates deviations of a moving average value calculated for each sampling in the moving average value calculation unit with respect to the management target value, and obtains the obtained deviation accumulated value as the management target value. A moving target value generating device for generating a moving target value in addition to a value, wherein the volume control signal generating device changes the volume of the measuring container such that the group average value matches the moving target value. The subdivision device according to claim 4, wherein the subdivision device generates a volume control signal. 6. The volume control section has a non-control area setting device for setting a non-control area above and below the movement target value, and the control signal output device is configured to set the group average value to the non-control area. Only when it is outside the range
The subdivision device according to claim 5, wherein the volume control signal is output.