JP2000074728A - System and method for material lot division management - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system and method for material lot division management wherein mixing of the materials of different lot is minimized and the product for which the lot of material used for manufacture has changed can be exactly detected. SOLUTION: A material tank 2 temporarily accumulates a material supplied from a material storage tank 1. A control device 4 controls the entire material lot division management system. A weighing tank 6 supplies the accumulated material to a mixing tank 8 based on a measured data DK. A change detector 9 outputs a lot change signal DC to the control device 4 when a new lot is fed to the material storage tank 1. A storage device 10 comprises a region PD where product number is stored, a lot number region PS corresponding to the product number, a region PW where a mixed weight is written, a region K# where the lot number of the material accumulated in the material storage tank 1 is written, a region M# where the lot number of the material in the weighing tank 6 is written, a flag X indicated whether during transfer from the weighing tank 6 to the mixing tank 8 or not, and a region T where the amount of mixing performed with the next lot is written.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a raw material lot division management system and a raw material lot division management method for managing supply of raw materials to a production line in lot units.

[0002]

2. Description of the Related Art Conventionally, in a blending step of blending raw materials, raw materials are transferred from a raw material tank to a measuring tank, and the amount of the raw material required for blending is measured in the measuring tank. In the compounding step, when a predetermined amount of the measured raw material is mixed, the entire amount is discharged from the measuring tank, and the raw material is mixed with another raw material.

At this time, when the amount of the raw material stored in the raw material tank becomes smaller than a predetermined amount, the raw material of the new lot is replaced with the raw material of the previous lot so as not to hinder the compounding process of the product production. Will be added.

[0004]

However, in order to strictly control the quality of products manufactured by mixing a plurality of raw materials, it is necessary to clearly control the lots of the raw materials used in the products. Therefore, in the above-mentioned measuring operation and supply operation of the raw materials to be blended, there is a disadvantage that it is not possible to accurately detect from which product the raw material lot used in the manufactured product has been switched.

The present invention has been made under such a background, and minimizes the mixing of raw materials of different lots in a raw material tank. It is an object of the present invention to provide a raw material lot classification management system and a raw material lot classification management method that can accurately detect whether or not the switching has been performed.

[0006]

According to the first aspect of the present invention,
In the raw material lot classification management system, when the raw material storage means for storing the raw material of the same lot and the raw material of the lot stored in the raw material storage means are lost, and the raw material of a new lot is stored in the raw material storage means Switching detection means for outputting a switching signal, the raw material storage means for temporarily storing the raw material, first supply means for supplying the raw material from the raw material storage means to the raw material storage means, and the raw material storage means. Measuring means for measuring the accumulated amount of the accumulated raw material and outputting accumulated data as a measurement result, and temporarily accumulating the raw material, measuring the accumulated amount of the raw material, and outputting measurement data as the measurement result; Weighing means,
A storage unit for storing at least lot data of the lot; a second supply unit for supplying the raw material from the raw material storage unit to the weighing unit; and a first supply unit based on at least the stored data, the weighed data, and the switching signal.
Control means for controlling the supply of the raw material in the supply means and the second means, and blending means for blending the raw material with a plurality of other raw materials, wherein the control signal Switching of the lot in the raw material storage means is detected, and when the accumulated amount of the raw material stored in the raw material storage means is smaller than a predetermined amount based on accumulated data, the raw material is transferred from the raw material storage means to the raw material storage means. When the raw material supplied by the first supply means and accumulated in the measuring means has run out, or the raw material accumulated in the measuring means has become smaller than a predetermined amount to be supplied to the blending means. A case is detected based on the weighing data, and the raw material is supplied from the raw material storage means to the weighing means by the second supply means, and is mixed by the mixing means. Made to correspond to the number and the material lot number, characterized in that to store into said storage unit.

According to a second aspect of the present invention, in the raw material lot classification management method, the first raw material is supplied from the raw material storage means for storing the raw material of the same lot to the raw material storage means for temporarily storing the raw material. A process, a second process in which the amount of the raw material stored in the raw material storage means is measured, and stored data is output as a measurement result, and the raw material stored in the raw material storage means based on the stored data. A third step in which the raw material is supplied from the raw material storage means to the raw material storage means by the first supply means when the accumulated amount of the raw material is smaller than a predetermined amount; A fourth step of temporarily storing the raw material in the measuring means, measuring the stored amount of the raw material, and outputting measurement data as a measurement result; A sixth process in which the raw material is supplied from the raw material storage means to the measuring means by the second supply means when the accumulated amount of the raw material accumulated in the measuring means is smaller than a predetermined amount based on the data. A seventh process in which the raw material is supplied to the blending means and blended with a plurality of other raw materials in the blending means; and the raw material of the lot stored in the raw material storage means is lost, and the raw material of a new lot is removed. When stored in the raw material storage means, when the amount of the raw material stored in the raw material storage means has become smaller than a predetermined amount, it is detected based on storage data, and the raw material storage means The raw material is supplied by the first supply means, and when the raw material accumulated in the measuring means is exhausted, or the raw material accumulated in the measuring means is to be supplied to the blending means. The case where the amount is less than the fixed amount is detected based on the weighing data, the raw material is supplied from the raw material storage unit to the weighing unit by the second supply unit, and the product number and the raw material lot number blended by the blending unit. And storing it in the storage unit in correspondence with the above.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a raw material lot classification management system according to one embodiment of the present invention. In this figure, a raw material storage tank 1 stores raw materials that need to be managed in units of lots used for compounding processing.

The raw material tank 2 temporarily stores the raw material supplied from the raw material storage tank 1 via the supply unit 3. Control device 4
Controls the entire material lot classification management system. The description of the control device 4 will be described later in detail. Weight sensor 5
Measures the weight of the raw material stored in the raw material tank 2 and outputs stored data DT to the control device 4 as a measurement result. The control device 4 detects that the amount of the raw material stored in the raw material tank 2 has become smaller than a predetermined amount based on the stored data.

The control unit 4 controls the supply unit 3 according to a control signal DS to supply the raw material from the raw material storage tank 1 to the raw material tank 2. The measuring tank 6 accumulates the raw material supplied from the raw material tank 2 via the supply unit 7. The weight sensor 11 is connected to the measuring tank 6.
The weight of the raw material stored in the storage device is measured, and measurement data DK is output to the control device 4 as a measurement result. In addition, measuring tank 6
Supplies the raw material accumulated based on the measurement data DK to the supply unit 2
0 to the blending tank 8. The supply unit 20 is controlled based on a switching signal DR from the control device 4.

That is, the control device 4 includes the weight sensor 11
The required amount is transferred from the measuring tank 6 to the blending tank 8 by controlling the supply unit 20 while detecting the reduced amount of the accumulated raw material based on the measuring data DK outputted from the measuring unit 6. The capacity of the measuring tank 6 is, for example, 1.
More than twice. The control device 4 controls the supply unit 7 by the control signal DP, and supplies the raw material from the raw material tank 2 to the measuring tank 6. The mixing tank 8 mixes the raw material supplied from the measuring tank 6 via the supply unit 20 with another raw material not shown.

When the raw material of the lot #n (n is a natural number) stored in the raw material storage tank 1 is exhausted and a new raw material of the lot # n + 1 is injected into the raw material storage tank 1, the switching detector 9 outputs a lot switching signal DC. Is output to the control device 4. Control device 4
Commands supply control to the supply unit 3 and the supply unit 7 based on the switching signal DC.

That is, the controller 4 sends the lot #n to the raw material tank 2 to the supply unit 3 until it detects from the stored data DT that the raw material of the lot #n stored in the raw material tank 2 is completely lost. The injection of the (n + 1) -th raw material is stopped.

Further, the control device 4 determines whether the raw material of the lot #n stored in the measuring tank 6 is completely lost or the remaining amount of the raw material of the lot #n stored in the measuring tank 6 is changed to the next mixing tank 8.
The supply unit 7 stops injecting the raw material of the lot # n + 1 from the raw material tank 2 to the measuring tank 6 until it is detected from the measurement data DK whether the amount becomes smaller than the required amount to be supplied to the measuring tank 6.

Further, the control device 4 stores the product number blended in the blending tank 8 in a region corresponding to the region PD,...
Write to PDm (m is a natural number), PDm + 1, PDm + 2.
Further, the control device 4 writes the lot number of the raw material used for the blending into the areas PSm, PSm + 1, and PSm + 2 corresponding to the areas in the area PS of the storage device 10. When the raw material of the lot #n and the raw material of the lot # n + 1 are mixed in the measuring tank 6, the control device 4 determines the remaining amount and the lot #n obtained from the lot number #n and the measurement data DK.
The number of +1 and “(mixing amount) − (remaining amount of lot #n)” are written in the areas corresponding to the area PD, the area PS, and the area PW of the storage device 10 in association with the product number.

The storage device 10 has at least an area PD for storing a product number and a lot number area P corresponding to the product number.
S, an area PW in which the compounded weight is written, and an area K in which the lot number of the raw material stored in the raw material storage tank 1 is written.
#, An area L # in which the lot number of the raw material stored in the raw material tank 2 is written, an area M # in which the lot number of the raw material stored in the measuring tank 6 is written, whether the transfer from the measuring tank 6 to the blending tank 8 is in progress. A flag X indicating whether or not the blending amount is to be blended in the next lot, and an area T in which the blending amount is written.

In the storage unit 10, the lot number of the raw material stored in the raw material storage tank 1 is written in an area K #, and the lot number of the raw material stored in the raw material tank 2 is written in an area L #. The lot number of the raw material accumulated in No. 6 is the area M #
Is stored in Further, the storage unit 10 writes a filling flag indicating a state in which the supply unit 7 is supplying the raw material from the raw material tank 2 to the measuring tank 6 in the W area.

For example, the controller 4 stores the product number “m + 1” of the product mixed in the mixing tank 8 with the raw material of the lot #n and the raw material of the lot # n + 1 in the area PDm + 1 of the storage unit 10. Write. And the control device 4
Is the product number “m” of the product that is first blended in the blending tank 8 with the other raw materials (not shown) of the raw material of only the lot # n + 1.
+2 ”is written in the area PDm + 2 of the storage unit 10. Therefore, the storage unit 10 stores a history of which product number the product lot has been switched from the product number of the manufactured product.

Next, FIG. 1, FIG. 2, FIG. 3, FIG.
The operation of the above-described embodiment will be described with reference to FIG.
FIG. 3 is a flowchart showing the flow of the raw material supply from the raw material tank 2 to the measuring tank 6. . FIG. 4 is a flowchart showing the flow of the raw material supply from the raw material storage tank 1 to the raw material tank 2. FIG. 5 is a flowchart showing a flow of managing the lot numbers of the raw materials.

Here, in the raw material storage tank 1, for example, lot #
n raw materials are stored. The raw material tank 2 also stores the raw material of the lot #n. Further, the raw material of lot #n is stored in the measuring tank 6. That is, “n” of the lot #n is written in the area K #, the area L #, and the area M # of the storage device 10.

In step S 1, the control device 4 determines whether the weight of the raw material stored in the measuring tank 6 is the upper limit value or the upper limit of the accumulated amount in the measuring tank 6 based on the measuring data DK output from the weight sensor 11. Determine whether the value is not a value.

That is, it is determined whether or not the measuring tank 6 is full. If the controller 4 determines that the raw material stored in the measuring tank 6 has reached the upper limit, the control unit 4 determines in step S
Step 1 is repeated. On the other hand, when it is determined that the raw material accumulated in the measuring tank 6 is not the upper limit value,
The process proceeds to step S2.

Next, in step S2, the control device 4
Determines whether or not the raw material is being transferred from the measuring tank 6 to the mixing tank 8 according to the transfer request from the mixing tank 8. When the transfer of the raw material is requested, the control device 4 starts the sequence shown in FIG.
The in-transfer flag X indicating that the transfer is in progress is set to the “ON” state. Therefore, in step S2, it is detected from the flag X that the raw material is being transferred. And
The control device 4 operates until the flag X is set to the “OFF” state.
That is, the process of step S2 is repeatedly performed until the transfer of the raw material is completed.

In the sequence of FIG. 5, in step S62, the control device 4 starts transferring the raw materials from the measuring tank 6 to the mixing tank 8.

Then, in step S63, the control device 4 determines whether or not the transfer amount has exceeded the compounding amount by the weight sensor 1.
The determination is made based on the weighing data DK output by the first step. At this time, when the control device 4 determines that the transfer amount does not exceed the compounding amount, the operation of step S63 is repeated. If the control device 4 determines that the transfer amount has exceeded the blending amount, the control device 4 proceeds with the process to step S64.

Next, in step S64, the controller 4 stops the transfer of the raw material from the measuring tank 6 to the mixing tank 8.

Then, in step S65, the control device 4 sets the in-transfer flag X to the "OFF" state.

Next, in step S66, the control device 4 writes the product number “m” of the product mixed in the mixing tank 8 into the area PDm of the storage device 10. And,
Since the lot number of the currently used raw material is lot #n, control device 4 copies "n" of lot #n stored in area M # to area PSm.

Next, in step S2 shown in FIG.
When the control device 4 determines that the raw material is not supplied from the measuring tank 6 to the blending tank 8, the process proceeds to step S3.

Next, in step S3, the control device 4
Is the raw material tank 2 stored in a predetermined area of the storage device 10.
Is compared with the lot number stored in the measuring tank 6. If the number of the lot stored in the raw material tank 2 is the same as the number of the lot stored in the measuring tank 6, "Y" is determined.

Next, in step S4, the control device 4
Sets the filling flag of the area W in the storage device 10 stored in the predetermined area of the storage device 10 to the “on” state. Then, control device 4 causes the process to proceed to step S5.

Next, in step S5, the control device 4
Outputs a control signal DP to the supply unit 7 and starts supplying the raw material from the raw material tank 2 to the measuring tank 6. And the control device 4
Advances the process to step S6.

Next, in step S6, the control device 4
Is the weighing data D output from the weight sensor 11
Based on K, it is determined whether the weight value of the raw material accumulated in the measuring tank 6 has reached the upper limit value or not.
Here, the control device 4 determines that the weight value of the raw material accumulated in the measuring tank 6 has reached the upper limit value. As a result, control device 4 causes the process to proceed to step S7.

Next, in step S7, the control device 4
Outputs a control signal DP to the supply unit 7 and stops the supply of the raw material from the raw material tank 2 to the measuring tank 6. And the control device 4
Advances the process to step S8.

Next, in step S8, the control device 4
Sets the filling flag of the area W stored in the predetermined area of the storage device 10 to the “OFF” state. Then, control device 4 causes the process to proceed to step S1. Thereby, the control device 4 repeats the processing from step S1.

In step S6, the control device 4
Determines that the weight value of the raw material accumulated in the measuring tank 6 is not the upper limit value. As a result, control device 4 causes the process to proceed to step S9.

Next, in step S9, the control device 4
Is the input weighing data DT output from the weight sensor 5
Based on whether the raw material accumulated in the raw material tank 2 is empty,
Or, determine whether it will be empty. When the control device 4 determines that the raw material stored in the raw material tank 2 is not empty as a result of the determination, the process returns to step S6. When the control device 4 determines that the raw material accumulated in the raw material tank 2 is empty as a result of this determination, the process proceeds to step S10.
Processing proceeds to

Next, in step S10, the control device 4 outputs a control signal DP to the supply unit 7, and stops the supply of the raw material from the raw material tank 2 to the measuring tank 6. Then, control device 4 causes the process to proceed to step S11.

Next, in step S11, the control device 4 determines whether the area W stored in the predetermined area
Is set to the "off" state. Then, control device 4 causes the process to proceed to step S12.

Next, in step S12, the control device 4 sets the lot number of the raw material stored in the raw material tank 2 stored in the area L # of the storage device 10, that is, the lot #n.
"N" is erased and set as "blank". Then, control device 4 causes the process to proceed to step S13.

Next, in step S13, the control device 4 activates the process (hereinafter referred to as sequence B) of the flowchart for sending the raw material from the raw material storage tank 1 to the raw material tank 2 shown in FIG. The process of the flowchart shown in FIG. 4 is controlled by the same controller 4 as the process of the flowchart shown in FIG. 3 (hereinafter, sequence A) in the present embodiment, and the processes are executed independently in parallel. In the sequence B, the processing is started at the same time as the sequence A, and the transfer of the raw material from the raw material storage tank 1 to the raw material tank 2 is controlled independently of the sequence A, but temporarily stopped when the raw material lot is switched. I do. Then, in the sequence B, the control of the transfer of the raw material of the new lot # is started again by the activation in the step S13 of the sequence A.

Next, in step S14, the control device 4 stores the measurement data DK obtained by the weight sensor 11 measuring the weight of the raw material stored in the measurement tank 6 in the area MW of the storage device 10.
Write to. That is, the control device 4 stores the weight of the raw material of the old lot # accumulated in the raw material tank 2 before the raw material of the new lot # is supplied when the lot is switched.

Next, in step S15, the control device 4 stores the weight value of the raw material stored in the weighing tank 6 stored in the area MW in the area T of the storage device 10 based on the weighing data DK. Next, it is determined whether the weight of the raw material to be supplied to the mixing tank 8 is larger or smaller. Here, when it is determined that the value is larger than the value of the weight of the raw material to be blended, the control device 4 executes the processing in step S1.
Proceed to 6.

Next, in step S16, the control device 4 determines whether the raw material is being supplied from the measuring tank 6 to the blending tank 8 or not, based on the value of the transferring flag X. Perform based on. Here, when it is determined that the supply of the raw material is not performed, the control device 4 proceeds to step 1.
Step 6 is repeated.

On the other hand, in step S16, the measuring tank 6
When it is determined that the raw material is supplied to the mixing tank 8 from the control device 4, the control device 4 advances the processing to step S17.

Next, in step S17, the control device 4 determines whether or not the weight to be blended into the blending tank 8 has been supplied based on the value of the flag X during transfer. here,
When it is determined that the weight to be blended has not been supplied to the blending tank 8, the control device 4 repeats Step S17.

On the other hand, if it is determined that the weight to be blended has been supplied to the blending tank 8, the control device 4 proceeds to step S
Return to 14.

In step S15, the measuring tank 6
If it is determined that the weight of the raw material stored in the storage device is smaller than the weight of the raw material to be blended, the control device 4 proceeds to step S1.
Proceed to 8.

Next, in step S18, the control device 4 sets the filling flag of the area W of the storage device 10 stored in a predetermined area of the storage device 10 to the "on" state.
Then, control device 4 causes the process to proceed to step S19.

Next, in step S19, the control device 4 outputs a control signal DP to the supply section 7, and starts supplying the raw material from the raw material tank 2 to the measuring tank 6. Then, control device 4 causes the process to proceed to step S20.

Next, in step S20, the control device 4 determines, based on the weighing data DK from the weight sensor 7, that the weight of the raw material accumulated in the weighing tank 6 is stored in the area T of the storage device 10. Then, it is determined whether the weight of the raw material to be supplied to the mixing tank 8 is larger or smaller than 1.1 times. Here, when it is determined that the weight is less than 1.1 times the weight of the raw material to be blended, the control device 4 repeats the process of step S20.

On the other hand, if it is determined in step S20 that the weight is more than 1.1 times the weight of the raw materials to be blended,
Control device 4 causes the process to proceed to step S21.

Next, in step S21, the control device 4 outputs a control signal DP to the supply unit 7, and stops the supply of the raw material from the raw material tank 2 to the measuring tank 6. Then, control device 4 causes the process to proceed to step S22.

Next, in step S22, the control device 4 sets the filling flag W stored in a predetermined area of the storage device 10 to the "OFF" state. And the control device 4
Advances the process to step S23.

Next, in step S23, the control device 4 stores “n” of the raw material lot #n stored in the raw material tank 2 stored in the area L # of the storage device 10 in the storage device 1.
The lot number of the raw material stored in the 0 measuring tank 6 is written in the area M # where the lot number is written. Then, control device 4 causes the process to proceed to step S1.

Next, in step S3, the storage device 1
The lot number written in the area L # of 0 and the area M #
When it is determined that the lot numbers written in are not equal, the control device 4 advances the processing to step S13.

Further, in step S50 of sequence B shown in FIG.
The lot number of the raw material stored in the raw material tank 2 stored in # and the lot number of the raw material stored in the raw material storage tank 1 stored in the area K # of the storage device 10 are equal or unequal. Is determined.

When the sequence A is restarted in step S13, the lot number of the raw material stored in the raw material tank 2 stored in the area L # of the storage device 10 and the lot number stored in the area K #. It is not equal to the lot number of the raw material stored in the raw material storage tank 1. Therefore, the control device 4
A determination of "N" is made, and the process proceeds to step S51.

Next, in step S51, the control device 4 determines whether the lot number of the raw material stored in the raw material tank 2 stored in a predetermined area of the storage device 10 is "blank" or not.
Or, it is determined whether it is not “blank”. Here, when it is determined that the lot number of the raw material stored in the raw material tank 2 stored in the area L # of the storage device 10 is not “blank”, the control device 4 shifts the processing to the flow shown in FIG. return.

On the other hand, when it is determined that the lot number of the raw material stored in the raw material tank 2 stored in the predetermined area of the storage device 10 is “blank”, the control device 4 advances the processing to step S52. Proceed.

Next, in step S52, the control device 4 stores the lot number of the raw material stored in the raw material tank 2 stored in the predetermined area L # of the storage device 10 in the storage device 10
Is the lot number of the raw material stored in the raw material storage tank 1 stored in the area K #. Then, control device 4 causes the process to proceed to step S50.

Next, in step S50, the control device 4 determines the lot number of the raw material stored in the raw material tank 2 stored in the predetermined area L # of the storage device 10 and the raw material storage tank 1
Is determined to be equal to the lot number of the raw material stored in.
Thereby, control device 4 causes the process to proceed to step S53.

Next, in step S53, the control device 4 sets the weighing data D output from the weight sensor 5 as input.
Based on T, it is determined whether the weight of the raw material stored in the raw material tank 2 has reached the upper limit or not. Here, when it is determined that the weight of the raw material has reached the upper limit, the control device 4 advances the process to step S54.

Next, in step S54, the control device 4 sets the weight of the raw material stored in the raw material tank 2 to the upper limit based on the stored data DT indicating the amount of raw material stored in the raw material tank 2 measured by the weight sensor 5. Supply unit 3
And the supply of the raw material from the raw material storage tank 1 to the raw material tank 2 is stopped. Then, control device 4 causes the process to proceed to step S53.

On the other hand, if it is determined in step S53 that the weight of the raw material is not at the upper limit, the controller 4
Proceeds to step S55.

Next, in step S55, the control device 4 outputs a control signal DS to the supply section 3 to start supplying the raw material from the raw material storage tank 1 to the raw material tank 2. Then, control device 4 causes the process to proceed to step S56.

Next, in step S56, the control device 4 determines whether or not the switching detection section 9 has measured the amount of the raw material stored in the raw material storage tank 1 based on the stored data DQ.
It is determined whether or not the raw material accumulated in the storage remains or no raw material remains. Here, when it is determined that the raw material remains, the control device 4 advances the process to step S53, and continues to supply the raw material from the raw material storage tank 1 to the raw material tank 2.

On the other hand, if it is determined in step S56 that no raw material remains in the raw material storage tank 1, the control unit 4
Proceeds to step S57.

Next, in step S57, the control device 4 clears the lot number of the raw material stored in the raw material storage tank 1 currently stored in the area K # of the storage device 10 to make it “blank”. Next, in step S58,
The control device 4 outputs a control signal DS to the supply unit 3 to stop the supply of the raw material from the raw material storage tank 1 of the supply unit 3 to the raw material tank 2. In the raw material storage tank 1, the lot number is
The n + 1 new raw material is injected, and the switching detection unit 9 outputs a detection signal DC to the control device 4.

As a result, the control device 4 outputs the detection signal DC
# N + as the lot number of the new raw material contained in
1 is detected. Then, the control device 4 writes “n + 1” of the lot # n + 1 into the area K # of the storage device 10.

Further, in the flowchart shown in FIG. 5, the correspondence of only the lot number is stored, but if the management of the lot number is required in more detail, the amount of the raw material at the time of switching the raw material lot is changed. In order to ascertain this, an area N # and an area NW shown in FIG. 2 for storing the current lot number and the amount of the raw material in the measuring tank 6 are provided in the storage area.

Then, before the processing in step S18 of the sequence A shown in FIG. 3, the control device 4 changes the current raw material lot number of the measuring tank 6 stored in the area M # into the area N #.
Copy to At the same time, the control device 4 stores the value of the measurement data DK, which is the weight of the raw material of the previous lot in the measurement tank 6 measured by the weight sensor 11, in the area NW.

Then, in step S66 of the flowchart shown in FIG. 5, the control device 4 stores the data in the area N # in correspondence with the product number "HL003" stored in the area PD, for example, as shown in FIG. Lot number "G
L001 "and the weight value" 70 "of the raw material stored in the area NM are written in the area PSm and the area PWm, respectively.

Then, the control device 4 transmits the same product number “H”.
In correspondence with “L003”, the lot number “GL002” stored in the area M # and “(the value of the weight measured in the composition) − (the value of the weight stored in the area Nm)” are “30”. Is written to the area PSm + 1 and the area PWm + 1, respectively. When the lot is not switched, the weighing data DK from the weight sensor 11 is written into the area PW together with the product number and the raw material lot number.

As a result, the data stored in the area PD, the area PS, and the area PW are in the state shown in FIG. From FIG. 6, the lot number of the raw material changes from the lot number “GL001” to the lot number “GL002” with the product number “HL003”, and the lot number “GL001” and the lot number The raw material with the number “GL002” has the weight value “7
It can be seen that the mixture is composed of “0” and the weight value “30”.

According to the raw material lot classification management system and the raw material lot classification management method of the embodiment described above, it is possible to control the mixing amount of the raw materials of different lots in the measuring tank 6 to a minimum, and from which product number the raw material lot number It is possible to clearly detect whether or not has changed.

Further, since the raw material larger than the weight of the raw material to be supplied to the mixing tank 8 is always accumulated in the measuring tank 6, the raw material used in the mixing tank 8 can be supplied without waiting time. Further, at least one or more compounding operations are performed after the raw material accumulated in the raw material tank 2 has been exhausted, so that a sufficient amount of time can be taken for transferring a raw material of a new lot to the raw material tank 2,
The raw materials necessary for the compounding can be ensured.

By performing the above-described processing, the raw material can be measured and supplied to the plurality of compounding tanks 8 by the pair of raw material tanks 2 and the measuring tank 6. That is, it can be performed by switching the mixing tank 8 to which the measuring tank 6 is supplied. When the raw materials are metered into the plurality of mixing tanks 8, the capacity of the measuring tank 6 is at least 1.2 times or more the one that requires the maximum value among the corresponding mixing tanks, preferably all the corresponding mixing tanks. In step 8, the total amount is equal to or more than the maximum amount of the weight of the raw material used in one blending (the blending amount differs depending on the type of product to be manufactured even with the same blending).

The information on the weight of the raw material to be supplied to the mixing tank 8 and stored in the area T, which is necessary for switching the lot of the raw material stored in the measuring tank 6, is stored in advance in the type of the type to be mixed. This may be the maximum value of the used amount of the raw material, or if the blending in the blending tank 8 is controlled in schedule, the actual amount of the next blend obtained from the blending system may be used as a reference.

Further, in the above-described flow, the switching of the measuring tank 6 is performed when the weight of the raw material accumulated in the measuring tank 6 becomes smaller than the weight of the raw material to be supplied to the blending tank 8. The raw material is measured and supplied to the tank 6. However, without using the weight of the raw material to be supplied to the blending tank 8, the supply amount is measured until the measuring tank 6 becomes empty, and the processing is temporarily stopped when the measuring tank 6 becomes empty.

Then, a method of supplying an amount larger than the insufficient amount from the raw material tank 2 to the measuring tank 6 and measuring the amount of the insufficient amount may be used. In this case, the number of times the raw material is supplied to the measuring tank 6 increases, and the raw material supply time slightly increases, but it is possible to more strictly manage the raw material lot.

The raw material tank 2 is placed above the measuring tank 6 and the raw material accumulated in the raw material tank 2 is dropped by gravity into the measuring tank 6 so that the raw material is supplied from the raw material tank 2 to the measuring tank 6. It can be performed quickly, and it is not necessary to install an expensive mass transfer device for transferring the raw material, and it is possible to prevent the raw material in the measuring tank 6 from running out.

[0083]

According to the first aspect of the present invention, the raw material storage means for storing the raw material of the same lot and the raw material of the lot stored in the raw material storage means are eliminated, and the raw material of the new lot is eliminated. Switching detection means for outputting a switching signal when stored in the raw material storage means, the raw material storage means for temporarily storing the raw material, and a first supply for supplying the raw material from the raw material storage means to the raw material storage means Means, measuring means for measuring the amount of the raw material stored in the raw material storage means, and outputting stored data as a measurement result,
A weighing unit that temporarily stores the raw material, measures the amount of the raw material stored, and outputs weighing data as a weighing result; a storage unit that stores at least lot data of the lot; and the weighing unit from the raw material storage unit. A second supply unit that supplies the raw material to the control unit, and a control unit that controls the supply of the raw material in the first supply unit and the second unit based on at least the accumulated data, the measurement data, and the switching signal. Blending means for blending the raw material and a plurality of other raw materials, wherein the control means detects the switching of the lot in the raw material storage means by the switching signal, and is stored in the raw material storage means based on the storage data. When the accumulated amount of the raw material is smaller than a predetermined amount, the raw material is transferred from the raw material storage unit to the raw material storage unit in the first state. When the raw material supplied by the supply means and accumulated in the measuring means is exhausted, or when the raw material accumulated in the measuring means is less than a predetermined amount to be supplied to the blending means, the measuring is performed. Detecting based on data, supplying the raw material from the raw material accumulating means to the measuring means by the second supplying means, and storing the product number and the raw material lot number in the storage unit in association with each other. It is possible to control the mixing amount of raw materials of different lots to a minimum, to clearly detect which product number has changed the raw material lot number, and to select a raw material that is larger than the weight of the raw material to be supplied to the compounding means. Since it is always stored in the metering means, the raw materials used in the compounding means can be supplied without waiting time, and at least once after the raw materials stored in the raw material storage means have been exhausted. Since the formulation of the above is performed, the transfer of the raw material of a new lot from the raw material storage means to the material storing means, take enough time, there is a material effect securing is ensured of the required formulation.

According to the second aspect of the present invention, the first step of supplying the raw material from the raw material storage means for storing the raw material of the same lot to the raw material storage means for temporarily storing the raw material, The second step in which the amount of the raw material stored in the storage means is measured and the stored data is output as a measurement result, and the stored amount of the raw material stored in the raw material storage means based on the stored data is determined. A third step in which the raw material is supplied from the raw material storage means to the raw material storage means by the first supply means when the amount becomes less than the fixed amount; and a fourth step in which the raw material is supplied from the raw material storage means to the measuring means. And a fifth step of temporarily storing the raw material in the measuring means, measuring the accumulated amount of the raw material, and outputting measurement data as a measurement result. A sixth process in which the raw material is supplied from the raw material storage means to the measuring means by the second supply means when the accumulated amount of the raw material accumulated is less than a predetermined amount; And the seventh step in which the raw material of the lot stored in the raw material storage means is lost, and the raw material of a new lot is stored in the raw material storage means. Detecting when the amount of the raw material stored in the raw material storage means becomes smaller than a predetermined amount based on the storage data, and supplying the raw material from the raw material storage means to the raw material storage means in the first supply mode. When the raw material supplied by the means and stored in the measuring means is exhausted, or when the raw material stored in the measuring means is less than a predetermined amount to be supplied to the blending means. An eighth step of detecting based on the weighing data, supplying the raw material from the raw material accumulating unit to the weighing unit by the second supply unit, and storing the product number and the raw material lot number in the storage unit in association with each other; Process, it is possible to control the mixing amount of the raw materials of different lots in the measuring means to the minimum, to clearly detect which product number has changed the raw material lot number, and supply it to the compounding means. Since the raw material larger than the weight of the raw material to be stored is always stored in the measuring means, the raw material used in the blending means can be supplied without waiting time, and at least after the raw material stored in the raw material storage means is lost,
Since the compounding is performed one or more times, sufficient time is required to transfer the raw material of the new lot from the raw material storage means to the raw material storage means, and the raw materials necessary for the compounding are ensured, and further used. The raw material to be prepared can be either a powder or a liquid, and is particularly effective for powders that are difficult to handle.In addition, a non-fixed storage tank such as a flexible conveyor can be used as a raw material storage tank. .

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a raw material lot classification management system according to an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of a storage device 10 shown in FIG.

FIG. 3 is a diagram showing a control method of the raw material lot classification management system shown in FIG.

4 is a diagram showing a control method of the raw material lot classification management system shown in FIG.

FIG. 5 is a diagram showing a control method of the raw material lot classification management system shown in FIG.

FIG. 6 is a diagram showing data of a product number, a raw material lot number, and a weight stored in an area PD, an area PS, and an area PW.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 raw material storage tank 2 raw material tank 3, 7, 20 supply unit 4 control device 5, 11 weight sensor 6 measuring tank 8 compounding tank 9 switching detection unit 10 storage device

Claims (2)

[Claims] 1. A raw material storage means for storing raw materials of the same lot, and a switching signal when a raw material of a lot stored in the raw material storage means is exhausted and a raw material of a new lot is stored in the raw material storage means. Switching detection means for outputting the raw material; the raw material storage means for temporarily storing the raw material; first supply means for supplying the raw material from the raw material storage means to the raw material storage means; Measuring means for measuring the accumulated amount of the raw material and outputting accumulated data as a measurement result; andmeasuring means for temporarily accumulating the raw material, measuring the accumulated amount of the raw material, and outputting measurement data as a measurement result. A storage unit that stores at least lot data of the lot; a second supply unit that supplies the raw material from the raw material storage unit to the weighing unit; Control means for controlling the supply of the raw material in the first supply means and the second means based on the product data, the weighing data and the switching signal; and a compounding means for mixing the raw material with a plurality of other raw materials The control means detects the switching of the lot in the raw material storage means based on the switching signal, and when the accumulated amount of the raw material stored in the raw material storage means is smaller than a predetermined amount based on accumulated data. The raw material is supplied from the raw material storage means to the raw material storage means by the first supply means, and the raw material stored in the measuring means is exhausted, or the raw material stored in the measuring means is Detecting, based on the measurement data, a case in which the amount is less than a predetermined amount to be supplied to the compounding means, and transferring the raw material from the raw material storage means to the measuring means in the second A raw material lot classification management system, wherein the raw material lot is supplied by a supplying means and stored in the storage unit in correspondence with a product number and a raw material lot number of a product blended by the blending means. 2. A first step of supplying a raw material from a raw material storage unit that stores raw materials of the same lot to the raw material storage unit that temporarily stores the raw material, and the raw material stored in the raw material storage unit. Is measured, and the accumulated data is output as the measurement result.
And when the amount of the raw material stored in the raw material storage means is smaller than a predetermined amount based on the stored data, the raw material is supplied from the raw material storage means to the raw material storage means by the first supply means. A third step of supplying the raw material from the raw material storage means to the measuring means, and temporarily storing the raw material in the measuring means, measuring the accumulated amount of the raw material as a measurement result. A fifth step of outputting the weighing data; and a second supply from the raw material storage means to the weighing means when the amount of the raw material stored in the weighing means is smaller than a predetermined amount based on the weighing data. A sixth step in which the raw material is supplied by means, a seventh step in which the raw material is supplied to the blending means, and blended with a plurality of other raw materials in the blending means, When the raw material of the stored lot is exhausted and the raw material of a new lot is stored in the raw material storage means, the time when the amount of the raw material stored in the raw material storage means becomes smaller than a predetermined amount is stored data. The first supply means supplies the raw material from the raw material storage means to the raw material storage means by the first supply means, and when the raw material stored in the measuring means is exhausted, or when the raw material is stored in the measuring means. The raw material is detected based on the measurement data when the amount of the raw material is smaller than a predetermined amount to be supplied to the blending unit, and the raw material is supplied from the raw material storage unit to the measuring unit by the second supply unit. An eighth step of storing the product number and the raw material lot number blended by the blending means in the storage unit in correspondence with each other.