JPS61130826A - Weighing apparatus - Google Patents

Abstract

PURPOSE:To achieve easy and accurate blending, by providing a computing section which calculates actual blending value based on signals from a measuring base and an operating section to determine deviation between this value and the target blending value and computes a scheduled blending value of material yet to be blended according to the deviation. CONSTITUTION:A weighing apparatus is provided with a weighing base 1 which outputs a weighing signal according to the weight of an object to be weighed, an operating section 4 which inputs an operating instructions for altering lots of blending material, ending the weighing and the like and a memory section 7 which memorizes lot information for indicating the composition about components of blending material for each specified lot while does target blending values of a plurality of blending materials. An arithmetic processing section 6 is provided to calculate an actual blending value during the blending process based on signals inputted from the weighing base 1 and the operating section 4 to determine deviation between this value and a target blending value and compute a scheduled blending value of material yet to be blended according to the deviation and a display section 9 to display the results of arithmetic processing for the scheduled blending value, actual blending value and the like. The apparatus thus arranged is used to blend several blending materials to obtain a specified blend easily.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention measures and blends blended raw materials that do not have a single composition, so that the blend in the final state has a predetermined total weight and a predetermined blending ratio of each component. The present invention relates to a measuring device that can satisfy the requirements.

[Conventional technology]

Generally, a plurality of compositions a,,aa,...+1++1;
b.

b7.・・・・・・;CII+C71・・・・・・;・
Blended raw materials a; b having ・・・・・・・・・・・・
;c...... with a predetermined blending weight 7M1: n Mh
; I%MC; ”...Measuring and mixing, the predetermined total weight W7 and each component X, Y,...
A mixture An (n -19g,...
...), the total weight W7 and the blended weight of each blended raw material nM*; nMb; hMc;
The following relationship holds true between .

WF2 “ttMa + nMb +, 1Mc+”
”... (1) Also, the blending ratio of compound A x7
is expressed by the following formula.

x11= (nMa ax+*Mh b*+---
--)/Wn (2) By the way, in reality, the blended raw material a has a large number of rows l-a' whose composition slightly deviates from the standard,
a',...a'-ゝ, lot a'
The composition is (a'X'laY'...), and the same is true for lots b and c.

In addition, the blended raw materials a, b, c, . . . have characteristics such that once mixed, it is impossible to separate them physically or operationally.

Here, formulation A7 is compared to the actual lot (e.g. a′, b”
Conventionally, there are two methods to obtain one unit of work W using one weighing platform using the following methods:

In other words, the first compounding method is as follows: ■ The basic recipe for compound An is compared to the actual lot a'.
, b-, c'......, and the blended weight of each blended raw material is nM@' , , Mb'',, Mc'
Select...

■ According to the revised recipe table, lower) a',, b''', C'
The weight of each blended raw material is nM, '
, , M1. ”'+ 1% M e'...
Weigh until...

■ Every time one measurement is completed, the weighed blended raw materials are moved from the weighing table and placed in another container or the like.

Do like this.

In addition, the second compounding method is as follows: ■ Based on the recipe of compound A7)
Corrected by ..., and the blended weight of each blended raw material was nMa' + nib - + nMc'""
” will be selected.

■ Place the container on a weighing stand, put the roughly cut raw materials into the container, measure the weight increase after charging, and use this as the combined weight of the raw materials.

■ Any excess or deficiency in the actual amount of blended materials will be adjusted by increasing or decreasing the planned blending amount of unblended materials.

■ Near the final stage, the raw materials that allow each component x, y, etc. to be individually adjusted are blended little by little so as not to exceed the required weight.

Do like this.

[Problem that the invention seeks to solve]

However, in the first blending method above, if the blended weight of one blended raw material is large, or if the blended raw materials have different properties such as solids, liquids, powders, etc., they may be placed in another container after weighing. It takes time to move, and depending on the method of dispensing mixed raw materials a, b, c..., it is difficult to accurately keep the planned amount of each mixed raw material (! If there is a slight surplus, the blended raw materials that have been paid out will not be returned and all will be used, and if there is a small amount of shortage, additional small amounts will not be paid out.), it is not possible to obtain the desired accurate blend A. There was a problem.

In addition, in the second compounding method, the problems of the first compounding method can be solved to some extent, but the components X, Y, etc. are calculated for each weighing of each compounded raw material. This is very time-consuming, and there are constraints on each blended raw material (for example, for compound A, a cannot be used above 7M-^), and lot changes (for example, lot a') Out of stock, changed to lot a'')
If there is, the correction will be even larger. Moreover, the formulations A,,A, require different formulation operations! . . . If it changes frequently, there is a problem that the work efficiency is significantly reduced.

Therefore, the present invention has been made by paying attention to the problems of the above-mentioned conventional examples, and an object of the present invention is to provide a measuring device that can perform efficient mixing.

[Means for solving problems]

In order to solve the above problems, the present invention provides a weighing stand that outputs a weighing signal according to the weight of an object to be weighed as it is placed thereon, and a weighing stand that outputs a weighing signal according to the weight of the object to be weighed, and an operation instruction command such as changing the lot of compounded raw materials and ending the weighing. an input operation section; a storage section that stores lot information representing the composition of each predetermined lot of each of the raw materials to be mixed; and a storage section that stores target amounts of the plurality of raw materials to be mixed; the weighing platform; Calculates the actual amount of blending in the blending process based on the signal input from the operation unit, calculates the amount of deviation between this amount and the target amount of blended material, and calculates the planned amount of blended raw materials that have not been blended according to the amount of deviation. It is characterized by comprising an arithmetic processing section and a display section that displays the arithmetic processing results of the arithmetic processing section, such as the planned blending amount and the actual blending amount.

[Effect]

The function of the present invention is that, when mixing a plurality of blended raw materials having a desired composition to form a blend, the blended raw materials are sequentially put in a predetermined amount into a tare bag placed on a weighing platform, and the blended raw materials are By inputting information from the operation section and storing lot information including the formulation list of the compound and the composition of the blended raw materials in advance in the storage section, it is possible to perform weighing based on the weighing signal from the weighing platform and the input signal from the operation section. The arithmetic processing section performs arithmetic processing, and while displaying operational guidance such as measurement results and input amounts of blended raw materials on the display section, the blended product reaches a predetermined overall weight and blending ratio of each component in the final target state. satisfy both parties.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings.

Fig. 1 is a block diagram showing one embodiment of the present invention, Fig. 2 (al and (bl) are flowcharts for explaining the invention in detail, and Fig. 3 (a) to (e) are storage tables of various types. FIG. 4, a diagram showing the contents, is a diagram showing an example of the display mode on the display unit.

In FIG. 1, 1 is a weighing platform, and its article holder l
The tare bag 2 placed on a and the object to be weighed inserted into it (
It outputs an electrical weighing signal WS according to the weight of the blended raw materials).

Reference numeral 3 denotes a weighing device main body, which includes a control section 5 formed of, for example, an interface circuit, into which the weighing signal WS from the weighing platform 1 and the operation command signal from the operation section 4 are input, and a control section 5 on the output side of the control section 5. Connected arithmetic processing unit 6. It is composed of a storage section 71, a communication section 8, and a display section 9, and a keyboard 10 is connected to the display section 9.

Here, the communication unit 8 is connected to an external device such as a host combinator (
(not shown) on-line or offline, and exchanges predetermined formulation information for the formulation to be blended with this host computer.

The arithmetic processing unit 6 receives a weighing detection signal WS from the weighing platform 1, a blending start signal, a blending end signal, a material code signal, a lot number command signal, The target mixture Afi is calculated for each measurement of one blended raw material based on an operation signal such as a measurement end signal, blended amount information of the blended raw materials stored in the storage unit 7, lot information, and composition information of each blended raw material. Calculation of the blending actual amount for each component and correction of the planned blending amount of unblended raw materials are performed, and the calculation results are displayed on the display section 9 to provide guidance to the operator. In this case, the storage unit 7
The planned blending amount of unblended raw materials is calculated by taking into account the constraints on the use of blended raw materials stored in .

The storage section 7 stores in advance a processing program necessary for the arithmetic processing of the arithmetic processing section 6 and a reference recipe table according to the blending plan, and also stores the blending information received by the communication section 8, and also stores the blending information received by the communication section 8. Lot information representing the composition according to the lot of raw materials to be supplied to No. 1 is stored.

The display section 9 displays the results of the weighing of the object to be measured on the weighing platform 1 based on the calculation processing results of the calculation processing section 6, the actual amount of blended raw materials, the planned amount of blended raw materials that have not been blended, and the target compound An.
Displays operation guidance consisting of actual blend amount, planned blend amount, deviation amount, etc. for each component.

Next, the operation will be explained with reference to the flowchart of FIG. 2(a).

First, in accordance with the main program shown in FIG. 2(a), the arithmetic processing section 6 determines whether the communication section 8 receives the daily mixing plan 06 as the mixing information from the host computer in step (3). . As shown in FIG. 3(a), this blending plan table 00 includes multiple blends A to be blended.
, for example, AI.

A! , A4... are written. At this time,
If the formulation information is not received, it is 0, and it waits until it is received, and when it is received, it moves to step ① and each formulation A7 described in this based on the formulation plan 00 is input.
FIG. 3 (b
) Select the standard recipe G1 in the predetermined format shown in
After storing this information in a predetermined order in a predetermined storage area of the storage unit 7, the process ends.

In this state, when a predetermined blending start signal is output by operating the operating section 4, for example, the blending interrupt process shown in FIG. 2 (bl) is started.

That is, in step (2), the first reference recipe Glfi stored in a predetermined storage area of the storage section 7 is read out, and based on this, the predetermined format shown in FIG. 3(C) previously stored in the storage section 7 is read out. A predetermined lot of blended raw materials is selected with reference to the blended raw material inventory table 02, and the planned blending amount is calculated using the composition. The calculation result is written in the recipe table G□ of the predetermined formant shown in FIG. 3(d) prepared in a predetermined storage area of the storage section 7, together with the lot number of the lot used and its composition.

Next, the process moves to step (2), and the recipe G37 of the compound A1 to be blended is displayed on the display section 9.

In this case, the display is as shown in FIG.
In addition to the information on each material in i, the desired formulation A.

Target blending amount J for each component (X, Y,...),
The actual blend amount and the deviation e between the blend target amount J and the actual blend amount are displayed in the planned blend amount.

Here, the blend target amount J indicates the mold amount by component of the target blend obtained from the reference recipe Glfl and the reference composition table 04 in a predetermined format shown in FIG. 3(e) stored in the storage unit 7 in advance. .

In addition, the planned blending amount includes recipe G3. , when the actual blended raw material lot in the blended raw material inventory table 02 is identified, the composition is calculated based on the deviation from the standard composition and the planned blending amount of each blended raw material that has been corrected accordingly, and the target is determined. There is a slight deviation from the amount (however, the planned amount of each blended raw material will be further corrected by later adjustment operations)
.

Furthermore, the blending actual measurement is calculated using the blending actual processing and the composition for the weighed (already blended) materials.
It is calculated using the planned blending amount and its composition for the unmeasured (unblended) blended raw materials. It shows what kind of blending state is reached.

Furthermore, the deviation amount e represents the difference between the blending target amount J and the blending actual amount. Note that at the start of the -th blending operation, the display of the planned blending amount and the actual blending amount match (i.e.,
(This is because even though the amounts are actually blended, they are all planned amounts.)

Next, the process moves to step (3), where the weighing platform 1 is moved from the operating section 4.
It is determined whether or not the compound raw material code representing the compound raw material to be input into the tare bag 2 above has been input. If the compound raw material code is not input, it waits until it is input, and when it is input, step Migrate to. At this time, if you want to use a mixed raw material from a different lot from the planned lot because the initially selected lot runs out of material, correct the lot number using the operation unit 4 or the keyboard 10, and then perform the operation of - Weighing the mixed raw material. . In this case, the arithmetic processing unit 6 reads the composition of the changed lot from the blended raw material inventory table Gt, corrects the blending table (Jla) based on this, calculates the blending actual amount and deviation amount, and calculates the blended raw material inventory table Gt. If there is no corresponding blended raw material, the communication section 8 makes an inquiry to the host computer.

In step (2), it is determined whether or not a measurement end signal indicating the end of inputting the blended raw materials has been inputted from the operation section 4. If the measurement end signal has not been inputted, the system waits until it is inputted, and when it is inputted, , move to step ■.

In this step (2), the weighing signal output from the weighing platform 1 at the time when the input of the mixed raw materials is finished is read, and this is updated and stored in a predetermined storage area of the storage unit 7 as the current weighing value, and then the process moves to step (2). The actual amount of blended raw materials is calculated from the difference between the current measured value and the previous measured value, and this is calculated based on the above-mentioned recipe table G2. .

Write in as the blending actual amount of the corresponding blended raw materials.

In addition, when calculating the blended amount, the weight of the tare bag 2 is subtracted to calculate the net weight.

Next, proceed to step (2), and modify the planned blending amount of the unblended raw materials to obtain the target compound A1 based on the blended amount of the blended raw materials at the present time and the blended amount of the unblended raw materials. , update and store this in the recipe table 03R, and based on this revised planned blending amount and the actual blending amount of the already blended raw materials, calculate the planned blending amount K and actual blending amount for each component of the target compound A. calculate.

Next, the process moves to step [phase], where the deviation amount e between the blending target amount J and the blending actual amount for each component is calculated, and then the process moves to step (2), where the deviation amount e is determined to be the preset allowable deviation ice. , and if e≦e, the process moves to step @.

In this step @, it is determined whether or not the blending of the compound A1 has been completed, and if the blending has not yet been completed, the process returns to step (■) and the above blending process is repeated, and when the blending has been completed, step @a The process moves to step Ob, waits for a blending end signal, and when the signal is input, moves to step Ob, performs blending end processing, and then returns to the main program.

Further, when the determination result in step (2) is e>e, the process moves to step 0, and a reexamination request display requesting reexamination of unblended raw materials is displayed on the display section 9.

Next, the process proceeds to step (3), where it is determined whether or not an adjustment calculation instruction signal has been inputted from the operation unit 4, and if the adjustment calculation instruction signal has not been inputted, it waits until it is inputted,
When input, the process moves to step [Phase] to increase or decrease unblended raw materials, change, delete, or add blended raw materials, calculate the planned blending amount of new unblended raw materials, and display this in the recipe table (Jjn After updating and storing the information, the process returns to step (3).If there is a restriction on the use of blended raw materials, the arithmetic processing unit 6 reads out the constraint logic from the storage unit 7 and creates a new blending schedule for unblended raw materials. Sometimes, such constraints are taken into account.

Then, the above-mentioned blending process is repeated every time blending of a new blend A is started.

In addition, in the above embodiment, the storage section stores a target reference recipe, stores the component composition ratio of the mixed raw materials, and sequentially stores the calculation processing results of the calculation processing section. However, it is not necessarily necessary to store these in one memory.
It may be stored in a corresponding storage unit (including the case of a register). Therefore, the storage section in this specification is defined to include storage sections arranged separately in this manner.

Furthermore, in the above embodiment, the case where the raw material code and lower) number are input from the operation section 4 when inputting the mixed raw materials is explained, but the raw material When inputting raw materials, the input of the material code and lot number can be omitted. (preferably done).

〔Effect of the invention〕

As can be understood from the above description, the present invention includes a weighing stand that outputs a weighing signal according to the weight of the object to be weighed depending on the storage location of the object to be weighed, and operational instructions such as changing the lot of mixed raw materials and ending the weighing. an operation unit for inputting commands; a storage unit for storing lot information representing the composition of each predetermined lot of each of the raw materials to be combined; and a storage unit for storing target amounts of the plurality of raw materials to be combined; Calculate the actual blending amount in the blending process based on the signals input from the machine and the operation unit, calculate the deviation amount between this and the blending target amount, and calculate the planned blending amount of unblended raw materials according to the deviation amount. The structure includes an arithmetic processing unit that performs calculations, and a display unit that displays the arithmetic processing results such as the planned amount of blending and the actual amount of blended in the arithmetic processing unit. It is possible to satisfy the predetermined overall weight of the compound and the blending ratio of each component in the final blended state while putting it into a container on the weighing platform, and it is possible to easily and reliably mix multiple blended raw materials to form a predetermined compound. You can get the effect that you can.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIGS. 2(a) and (b) are flowcharts for explaining the invention in detail, and FIGS. FIG. 4 is a diagram showing the stored contents of various storage tables to be stored, and FIG. 4 is a diagram showing an example of the display mode of the display section. In the figure, ■ is a weighing platform, 2 is a tare, 3 is a weighing device body, 4 is an operating section, 5 is a control section, 6 is a calculation processing section, 7 is a storage section, 8
9 is a communication section, 9 is a display section, and 10 is a keyboard. Figure 3 Figure 4

Claims (1)

[Claims] A weighing platform that outputs a weighing signal according to the weight of the object to be weighed as the object is placed; a storage unit that stores lot information representing the composition of ingredients for each lot and stores target blending amounts of the plurality of raw materials to be blended; an arithmetic processing unit that calculates the actual amount, calculates the amount of deviation between this and the blending target amount, and calculates the planned amount of unblended raw materials to be blended according to the deviation amount; and a blending schedule in the arithmetic processing unit. A measuring device comprising: a display unit that displays calculation results such as amount, actual blend amount, etc.