JP2699066B2 - Combination weighing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] [0001] The present invention relates to a plurality of pool hotspots.
Weight of objects to be weighed stored in multiple weighing hoppers from
Or the set weight or setting
Regarding the combination weighing method of discharging a fixed number of batches,
In addition, a semi-automatic
The present invention relates to a combination weighing device. [0002] BACKGROUND OF THE INVENTION Confectionery, fruits, vegetables, meat, etc.
Set the weighing object with weight variation individually
Or a combination meter to efficiently combine only the set number
A weighing device is used, but the object to be weighed is large and heavy.
(For example, cabbage, broiler, etc.)
Damage to the weighing object due to dropping during supply and discharge operations
Semi-automatic set to supply the weighing object by hand to prevent
Conventionally, a weighing device is used. In such a semi-automatic combination weighing device,
To efficiently supply the objects to be weighed
For the set weight or the set number of
To increase the combination accuracy, one pool hopper must be
And install a weighing hopper with multiple storage
The weight value of the objects stored in the delivery room is calculated for each weighing hopper.
Consider using a provided measuring device for detection.
available. FIG. 6 shows such semi-automatic combination weighing.
1 shows an example of an apparatus. In FIG. 6, 1_-1~
1_-NIs a pool hopper, and each pool is manually
Hopper 1_-1~ 1_-NThe weighing object stored in the
Discharge gate 2_-1~ 2_-NOpen each weighing hopper
4_-1~ 4_-NOne side storage room 5_-1~ 5_-NHoused in
It is. Each storage room 5_-1~ 5_-NObject to be weighed contained in
Is each weighing hopper 4_-1~ 4_-NMeasuring instrument provided for each
7_-1~ 7_-NWeighed by the weighing signal
It is sent to the unit 8. [0005] In the control unit 8, a shock when the object to be weighed is stored is provided.
After the vibration of the weighing signal by the
Room 5_-1~ 5_-NThe weight value of the weighing object stored in
And are respectively stored. An empty pool hopper 1_-1~ 1_-NTo
Indicates that the next object to be weighed is manually input and the discharge gate 3 on the other side
_-1~ 3_-NOpens and the weighing hopper 4_-1~ 4_-NOther
One side storage room 6_-1~ 6_-N, Respectively. [0007] The control unit 8 transmits the weighing signal at the time of storage.
From the weighed value after the movement has stabilized,_-1~ 5
_-NSubtract the weight value of the weighing object stored in
Then, each reduction result is stored in storage room 6_-1~ 6_-NHoused in
Each is stored as the weight value of the object to be weighed. Further, a new object to be weighed is
Le hopper 1_-1~ 1_-NAfter being hand-injected into
Request combination discharge by operation of foot switch etc.
When the combination signal is input, the control unit 8 sets each storage room 5
_-1~ 5_-N, 6_-1~ 6_-NOf the weighing object stored in
A combination operation is performed based on the weight value. As a result of the combination calculation, the optimum value for the target weight is obtained.
Combination is selected, and the selected
The discharge gate of the storage room is opened, and each target
The mass is discharged onto the collecting conveyor 11. The collecting conveyor 11 is provided with each weighing hopper 4_-1
~ 4_-NWeighing object discharged from the packing machine (not shown)
Etc., and the objects to be weighed for the target weight are collected. On the other hand, during this discharge, the combination is selected and
Pool hopper corresponding to the storage room of the weighing hopper
The object to be weighed is discharged from the pool hopper
Indicates that the next weighing object is manually input and the combination signal is input again.
Then, a combination selecting operation is performed in the same manner as described above. Hereinafter the same
In this way, the loading and unloading of the
returned. Note that, in FIG._-1~ 9_-N, 10_-1~ 1
0_-NIs the discharge gate of the weighing hopper and the pool hopper
1_-1~ 1_-NDischarge gate 2_-1~ 2_-N, 3_-1
~ 3_-NAt the same time, control of the opening / closing operation is performed by the control unit 8.
It is done. [0013] SUMMARY OF THE INVENTION
In combination weighing devices, for example,
An object to be weighed is put into these storage rooms, and the weighing measurement is performed.
During the measurement, the
The weighing object stored in the other weighing hopper
Is controlled by the control unit 8 so that it is not used for the combination.
Was. For this reason, storage that can be used for selecting a combination
It is said that the number of rooms will decrease and the accuracy of the combination will deteriorate extremely
There was a problem. In addition, the pool hopper always
Open to accept
It is difficult for workers to judge the timing of manual input,
Accidentally remove the weighing object while the hopper discharge gate is open.
Input to prevent damage to the weighing object and overload on the weighing hopper.
There was a problem of causing a failure. The present invention has been made in view of the above circumstances.
As a result, erroneous loading of the weighing object is prevented without lowering the combination accuracy.
To provide a combination weighing method that can be stopped.
It has been the target. [0016] [MEANS FOR SOLVING THE PROBLEMS] To achieve the above object
In addition, the combination weighing method of the present invention employs the
Objects to be weighed are manually input to the entrance and stored in multiple pool hoppers
And positioning each below the pool hopper
To be emptied among the multiple storage chambers of the weighing hopper
Close the shutter to selectively supply material
Discharge gate of the pool hopper corresponding to the empty storage room
Opening and discharging the object to be weighed in the pool hopper
Close the discharge gate of the pool hopper that discharged the
Open the shutter at the input port of the pool hopper
Stage and receiving the weighing object discharged from the pool hopper
The weight of the weighing hopper is provided for the weighing hopper.
The stage of weighing and measuring with a weighing device and the weighing measurement with a weighing device
Weight of the weighing hopper for whichMeasurementIs done
Find the difference from the previous weight and find the corresponding storage room of the weighing hopper.
Calculating the weight of the object to be weighed contained in the
When a discharge request is made, the weight of the
Therefore, the combination weight or combination number is close to the target amount.
Selecting the objects to be weighed which are equal to each other;
Newly stored in one of the multiple storage rooms corresponding to
While trying to measure the weighing object,
The newly accommodated as a result of the selection of the combination made
Including objects to be weighed stored in storage rooms other than
If a combination is selected,In the selected storage room
Corresponding pool hopper discharge gateButCloseandThat sha
TtaButOpenWhile maintaining the, Excellent in the weighing measurement
First, the object to be weighed in the selected storage chamber is discharged.
And a stage. [0017] BRIEF DESCRIPTION OF THE DRAWINGS FIG.
An embodiment will be described. FIG. 1 shows a combination meter to which the present invention is applied.
FIG. 2 is a schematic configuration diagram showing a mechanical unit of the measuring device, and FIG.
FIG. Referring to FIG._-1~ 12_-NIs
N pool hoppers 13 arranged below each_-1~
13_-NOpening and closing the loading port to prevent incorrect loading of the weighing object
For each pool hopper 13_-1~
13_-NThe object to be weighed is discharged and opened when it is empty.
Is controlled. Pool hopper 13_-1~ 13_-NThe hand
The input weighing object is stored. Pool hopper 13
_-1~ 13_-NBelow each of the two storage rooms 17
_-1~ 17_-N, 18_-1~ 18_-NWeighing hot
Par 16_-1~ 16_-NIs installed. Pool hopper 13_-1~ 13_-NHoused in
The weighed object is discharged to the discharge gate 14_-1~ 14_-N, 15
_-1~ 15_-NOpen the weighing hoppers 16_-1
~ 16_-NStorage room 17_-1~ 17_-N, 18_-1~ 1
8_-NIs dropped and stored. Weighing hopper 16_-1~ 16_-NIn it
One measuring device 19_-1~ 19_-NIs installed
The weight of the contents in any of the two storage rooms
The quantity is also detected by one meter. The weighing hopper 16_-1~ 16_-NBelow
Is provided with an assembly conveyor 22. Each weighing hopper
16_-1~ 16_-NThe weighing objects stored in
Discharge gate 20_-1~ 20_-N, 21_-1~ 21_-NTo
When opened, it falls onto the collecting conveyor 22. At the lower side of the take-out side of the collecting conveyor 22, a package is provided.
Machine 23 is installed. The collection conveyor 22 is
It operates every time the weighing object is discharged from the
The object to be weighed is conveyed to the packaging machine 23. On the other hand, the measuring device 19_-1~ 19_-NFrom
The weighing value signal is output from the weighing value calculation circuit 24 as shown in FIG.
_-1~ 24_-NSent to Measurement value calculation circuit 24_-1~ 24_-NIs the total
Receiving the value signal, each weighing hopper 16_-1~ 16_-NEach of
Storage room 17_-1~ 17_-N, 18_-1~ 18_-NStored in
Output the weight value of the weighed object
Detects based on the signal and stores each weight value.
For this purpose, it is configured as shown in FIG. That is, the measuring device 19_-1The weighing value from
Calculator 25_-1To the weighing hopper 16_-1One of
Storage room 17 (for example, on the left)_-1The weight value of the weighing object
Weight memory 26 to store_-1Is subtracted. This
Is the completion signal A, which will be described later, when the measurement is completed.
_-1Switch 27 turned ON by_-1Through the other
(Right) storage room 18_-1Weight of the weighing object
Quantity memory 28_-1Is stored. Similarly, the subtractor 29_-1Entered in
The weighed value is calculated by the subtractor 29_-1In the weight storage 28_-1
Is subtracted, and the result of the subtraction is a completion signal described later.
Issue B_-1Switch 30 which is turned ON by_-1Through
One (left) storage room 17_-1Weight of the object to be weighed
Weight storage 26_-1Is stored. The target stored in either of the storage rooms
When the mass is discharged, the discharged storage is synchronized.
A switch 31 is stored in the weight storage device corresponding to the room._-1Or su
Itch 32_-1Is stored via the "0" gram. The switch 31_-1Is the emission credit
Issue C_-1Switch that is opened and closed by
Switch 32_-1Is the emission signal D_-1Switch that opens and closes
Ji. The combination selection circuit 35 includes a foot switch or the like.
Each input of the combination signal by the operation of_-1
~ 17_-N, 18_-1~ 18_-NOf the weight of the object to be weighed
Combination that calculates all different combination weights based on
Calculating unit 35a and weight setting unit 3 for setting and storing the set weight
5b, the combination weight output and the weight setting of the combination calculator 35a.
Compare the output with the set weight of the setting unit 35b, and compare with the set weight.
Is determined and the combination selection signal is output.
And a discriminating unit 35c for pushing. Emission control circuit 40_-1~ 40_-NIs
Upon receiving the combination selection signal, the weighing hopper 16_-1~ 16
_-NDischarge gate 20_-1~ 20_-N, 21_-1~ 21
_-NOpen the gate specified by the combination selection signal
To discharge the weighing object selected for the combination.
Of the pool hopper corresponding to the storage room of the used weighing hopper
Open the exit gate and close the shutter to measure the object.
Supply hopper and discharge gate of pool hopper
And close the shutter to open a new
Enable input. To open and close these gates
The emission control circuit 40_-1Is, for example, as shown in FIG.
Is configured. Referring to FIG.
The combination selection signal is sent to the left and right storage rooms 17._-1, 18_-1To
Corresponding discharge gate timer TM1_-1, TM2
_-1Is input to Discharge gate timer TM1_-1, TM
2_-1Consists of a multivibrator, etc.
Input, a certain time from the rising of the input pulse
T₁(That is, the object to be weighed is completely discharged from the storage chamber.
For a period of time). Discharge gate timer TM1_-1Output is
Outgoing signal D_-1The weighing value calculation circuit 24_-1Sui
Switch 32_-1Opening and closing the storage room 17_-1Side discharge gate
20_-1Open and close. Similarly, the discharge gate timer T
M2_-1Is the output signal C_-1Weighing value calculation times
Road 24_-1Switch 31_-1Opening and closing the storage room 18
_-1Side discharge gate 21_-1Open and close. Left storage room 17_-1Discharge gate corresponding to
Timer TM1_-1The combination selection signal input to
Flip-flop FF1_-1Clock input.
Flip-flop FF1_-1D input of "L" level
The output Q is fixed as a combination permission signal.
It is sent to the combination selection circuit 35 (not shown), and
Output Q 'of the AND circuit 41_-1One input end of
Entered in child. AND circuit 41_-1Other input terminal of
Has a discharge gate timer TM1_-1Output is
TA 42_-1The input is inverted via. AND circuit 41_-1Output is a three-input
Circuit 43_-1Is input to the first input terminal.
AND circuit 43_-1Output of the flip-flop FF2
_-1To the set terminal of the first phase shift circuit 20
And the AND circuit 44_-1Input to one of the input terminals
I have. The flip-flop FF2_-1Inversion
The output Q 'is supplied to an AND circuit 43._-1Into the second input terminal
Output Q is output to the AND circuit 45_-1One of
While being input to the input terminal, the AND circuit 46_-1of
It is input to one input terminal. AND circuit 46_-1Output is flip-flop
Ropp FF1_-1Set terminal and flip-flop F
F2_-1And OR circuit
47_-1Is input to one of the input terminals. Also,
AND circuit 46_-1Output of the measurement measurement completion signal B
_-1As the weighing value calculation circuit 24_-1Switch 30_-1
Open and close. On the other hand, the OR circuit 44_-1The output of and
Circuit 48_-1Via shutter timer TM3_-1Enter in
Have been. Shutter timer TM3_-1Is the input pulse
Time T₂(That is, when the shutter is
Time required to close the inlet of the hopper
Outputs "H" level. Shutter timer TM3_-1Out
Power is flip-flop FF3_-1Input to the set terminal
And the inverter 49_-1Gate through
Ima TM4_-1Has been entered. Gate timer TM4_-1Is the input pulse
Fixed time T from start₃(That is, if the object to be weighed is
"H" level only for the time for complete discharge from
Output file. Gate timer TM4_-1The output of and
Circuit 45_-1Input to the other input terminal of
45_-1Output of the weighing hopper 16_-1Left storage room 1
7_{− 1}Pool hopper 13 corresponding to_-1Discharge gate 1
4_-1This is a signal output for opening and closing the switch. Also, this game
Auto timer TM4_-1The output is the inverter 50_-1By
And the D input is fixed at "L" level.
Flip flop FF3_-1Input to the clock terminal of
You. Further, the inverter 50_-1The output is
Flip-flop F whose D input is fixed at “L” level
F4_-1Clock terminal. This flip
Flop FF4_-1Set terminal to the foot switch.
Input of the combination signal from the
The force Q is applied to the AND circuit 48_-1Has been entered. Further, the gate timer TM4_-1Out of
Power is AND circuit 51_-1Input to one of the input terminals
And the AND circuit 51_-1The other input terminal of
Shape wave oscillator 52_-1Square wave output from
You. AND circuit 51_-1The output of the
Ima TM5_-1And the supply stabilization timer TM
5_-1Is a constant time T from the rising of the input pulse.₄(Immediately
After the object is dropped and supplied to the weighing hopper,
"H" level is output only for the time until the value stabilizes)
You. The supply stabilization timer TM5_-1That Thailand
When the next pulse is input during operation,
T₄Re-hold the output at “H” level only for the time
This is a Riga type timer. Square wave oscillator 52_-1The output of the AND times
Road 53_-1Is also input to one of the input terminals
AND circuit 53_-1Of the OR circuit 5
4_-1Of the OR circuit 54_-1In the exhaust
Auto timer TM1_-1, TM2_-1Output is input
I have. AND circuit 53_-1The output of the
Ima TM6_-1And the discharge stabilization timer TM
6_-1Is a constant time T from the rising of the input pulse.₅(Immediately
After the object to be weighed is discharged from the weighing hopper,
The “H” level is output only during the time until the signal is stabilized. This discharge timer TM6_-1Is a stable supply
Ima TM5_-1Similarly, during the timer operation, the next pulse
Input, a further T₅Only time,
A retrigger timer that holds the output at "H" level.
You. Supply stabilization timer TM5_-1And emission stabilization Thailand
Ma TM6_-1Output of the NOR circuit 55_-1Both input terminals
And the NOR circuit 55_-1Output is
Flop FF5_-1Input to the clock terminal of
You. Flip-flop FF5_-1The D input of
The output Q is fixed at “H” level.
Circuit 46_-1Is input to the other input terminal. Ma
The flip-flop FF5_-1The reset terminal of
OR circuit 47_-1Output is input. On the other hand, the right storage room 18_-1Discharge in response to
Gate timer TM2_-1Selection signal input to
Has the D input fixed at the “L” level, as in the left side.
Flip-flop FF6_-1Input to the clock terminal
ing. Then, the flip-flop FF6_-1Out of
The force Q is sent to the combination selection circuit 35 as a combination permission signal.
(Not shown), and its inverted output Q 'is
6_-1Is input to one input terminal of the
Is the discharge gate timer TM2_-1The output of the inverter
57_-1The input is inverted via. AND circuit 56_-1Output is a three-input
Circuit 58_-1Is input to the first input terminal of
The AND circuit 41 is connected to a second input terminal._-1of
Output is inverter 59_-1The input is inverted via
You. The third input terminal is connected to the flip-flop.
FF2_-1Is output. AND circuit 58_-1Output is flip-flop
Ropp FF7_-1Input to the set terminal of
OR circuit 44_-1Input to the other input terminal of
You. Also, flip-flop FF7_-1Inverted output Q '
Is the AND circuit 43_-1Input to the third input terminal of
Output Q is connected to two AND circuits 60_-1, 61
_-1Are input to one of the input terminals. AND circuit 60_-1To the other input terminal of
Is the gate timer TM3_-1Output is input
And AND circuit 60_-1Output of the weighing hopper 16_-1
Right storage room 18_-1Pool hopper 13 corresponding to_-1
Discharge gate 15_-1Signal output for opening and closing
You. Further, one AND circuit 61_-1The other of
The input terminal is connected to the flip-flop FF5_-1Output
Q is input and the AND circuit 61_-1Output is
Lip flop FF6_-1Set terminal and flip flow
FF7_-1Input to the reset terminal of
The OR circuit 47_-1Input to the other input terminal of
You. The AND circuit 61_-1The output of
Measurement measurement completion signal A_-1As the weighing value calculation circuit 24
_-1Switch 27_-1Open and close. The above-mentioned weighing value calculation circuit 24_-1And
And discharge control circuit 40_-1Is each measuring instrument 19_-1~ 19_-N
In each case, N sets are provided in exactly the same manner. Next, the operation of the above embodiment will be described with reference to FIG.
This will be described with reference to FIG. In advance, all pool hoppers 13_-1~ 13
_-NAnd weighing hopper 16_-1~ 16_-NEach storage room 1
7_-1~ 17_-N, 18_-1~ 18_-NThe object to be weighed
Is stored, and the weighing value calculation circuit 24_-1~ 24_-N
Weight storage 26_-1~ 26_-N, 28_-1~ 2
8_-N, Where each weight value is stored
And The discharge control circuit 40_-1~ 40_-Nof
Flip-flop FF1_-1~ FF1_-N, FF6_-1
~ FF6_-NIs set and other flip-flops
Is reset and each timer is not running.
And The weighing value calculation circuit 24_-1~ 24_-NWeight of
The stored value is sent to the combination calculator 35a of the combination selection circuit 35.
It is sent out and operated by the operation of the foot switch etc.
When the combination signal is input, the combination calculation unit 35a
The weight value of the storage room whose permission signal is "H" level
Based on the combination weight for all different combinations
calculate. The determination section 35c is set in the weight setting section 35b.
Determine the optimal combination weight for the set weight
Then, as a result, it corresponds to each storage room selected for the combination.
Discharge / supply circuit 40 for combination selection signal_-1~ 40_-NSent to
Put out. Here, for example, the weighing hopper 16_-1Storage
Room 17_-1, 18_-1The weighing objects stored in
If the combination is selected, the time chart of FIG.
As shown in₀Sometimes discharge gate timer TM1_-1,
TM2_-1The combination selection signal is input to each
5 (a), (b)). When a combination selection signal is input,
Totimer TM1_-1, TM_-1Work together, FIG. 5
As shown in (c) and (d) of FIG.₀From time
T₁It becomes the "H" level for a time. This output is output signal C
_-1, D_-1Weighing hopper 16 as_-1Discharge gate 2
0_-1, 21_-1To open both storage rooms 17_-1, 18
_-1The objects to be weighed stored in the
Let it down. The objects to be weighed that have fallen on the collecting conveyor 22 are
Packaging machine with other items to be weighed selected and discharged
23 to be packaged. Also, the discharge signal C_-1,
D_-1Is a weighing value calculation circuit 24_-1Switch 3
1_-1, 32_-1Is turned on, and both weight storage devices 2
6_-1, 28_-1Is stored as "0". Also, t₀From both times discharge gate timer TM
1_-1, TM2_-1That the output of the device goes to “H” level
Emission stabilization timer TM6_-1Is activated and its output is
T₁+ T₅It becomes the "H" level for a time. (Fig. 1
(I)). Further, the input signal of the combination selection signal
Flip-flop FF1_-1, FF6_-1The output of both
t₀From time “L” level (FIG. 5 (j),
(K)), the inverted output Q 'goes to "H" level. T₀T from time₁Time elapsed t₁Sometimes, exhaust
Exit gate timer TM1_-1Becomes "L",
AND circuit 41_-1Output becomes “H” level,
Circuit 43_-1Outputs a positive pulse to the flip-flop F
F2_-1Set terminal and OR circuit 44_-1Output to
You. On the other hand, the AND circuit 56_-1The output of
It goes to “H” level, but the inverter 59_-1By
AND circuit 58_-1Output remains at “L” level.
You. AND circuit 43_-1Set by
Flip-flop FF2_-1Output Q is "H" level
And AND circuit 45_-1Is input to Also, Ann
Circuit 43_-1From the OR circuit 44_-1You
And AND circuit 48_-1Via shutter timer TM3
_-1, The shutter timer TM3_-1output
Is T₂At time "H" level (FIG. 5 (e)),
Flop FF3_-1The output goes to “H” level
Tta 12_-1Closes. The shutter timer TM3_-1Output is t₂Time
At "L" level, the gate timer TM4_-1Is made
Move, t₂T from time₃Time "H" level output
, AND circuit 45_-1From T₃Time
During this time, the “H” level is output (FIG. 5 (f)) and the pool
Par 13_-1Left discharge gate 14_-1Is opened and weighed
The object is weighing hopper 16_-1Left storage room 17_-1Housed in
Weighing scale 19_-1Weighing is started. Naoko
During the discharge time of the flip-flop FF3_-1Output
Since the level becomes “H”, the pool hopper 13_-1Is sha
Tta 12_-1Is closed by. Further, t₂Sometimes gate timer TM4_-1
Becomes "H" level, the supply stabilization timer TM5_-1But
It operates and its output is T₃+ T₄"H" level only for time
(FIG. 5 (h)). Then, T₃Time after t₃Sometimes gate ties
Ma TM4_-1When the output changes to “L” level,
Flop FF3_-1Output Q becomes "L" level,
Shutter 12_-1Opens to allow the next weighing object to be manually loaded.
It works. Further, this t₃Sometimes flip-flop F
F4_-1The output changes to "L" level and the next combination signal
Is held at the “L” level until is input. T₂T from time₃+ T₄Time elapsed t₄Time
And the drop stabilization timer TM5_-1Output to "L" level
Because it changes, flip-flop FF5_-1Clock
Input rises and its output Q is set to “H” level
Is done. This output Q is supplied to an AND circuit 46._-1Through
Lip flop FF1_-1Set the flip flop
FF2_-1And flip-flop FF5_-1Lise
Cut. Therefore, the flip-flop FF1_-1
Becomes "H" level (FIG. 5 (j)).
It is sent to the combination selection circuit 35 as a reset permission signal. At this time (t)₄Time), AND circuit 46
_-1A positive pulse indicates that the weighing is complete
B_-1As the weighing value calculation circuit 24_-1Sent to the switch
Switch 30_-1Turns ON. Thus, the measuring device 19_-1Enough from
From the stable weighing value to the right storage room 18_-1Corresponding to
Weight storage 28_-1Stored value (in this case, “0”)
And the subtraction result is the left storage room 17_-1Weighing object
Weight storage 26 as the weight value of_-1Is stored. As described above, the left storage room 17_-1Supply to
The weight of the weighed object is detected, and this weight value is
It is sent to the matching selection circuit 35. The left storage room 17_-1Of the weight of the object to be weighed
Is completed₄Sometimes flip-flop FF1_-1Anti
The inverted output Q 'attains the "L" level, so that the AND circuit 4
1_-1Is also at the "L" level. This output is
Data 59_-1Via AND circuit 58_-1Entered in
Therefore, the AND circuit 58_-1Output becomes “H” level.
FF flip-flop FF7_-1Is set. Here, the pool hopper 13_-1Next payee
The mass is charged and t₅When a combination signal is input
Then, the combination by the combination selection circuit 35 is selected as described above.
This combination selection signal is sent to each emission control circuit.
It is. At this time, the left storage room 17_-1Housed in
If the sample to be weighed is not selected for the combination,
Road 58_-1"H" level output of the AND circuit 48_-1
Through the shutter timer TM3_-1Sent to
Tta timer TM3_-1Is T₂Activate time, flip flip
Ropp FF3_-1Is set (FIG. 5E). For this reason, the shutter 12_-1Is closed again
And T₂Time after t₆Sometimes, the gate timer TM4_-1But
T₃Time activated, AND circuit 60_-1Is "H" level
(Fig. 5 (g)), pool hopper 13_-1From right
Delivery room 18_-1The weighing object is stored in the
It is. The gate timer TM4_-1Works
And the supply stabilization timer TM5 as described above._-1Is t₆From time
T₃+ T₄Time operation (FIG. 5 (h)), t₆T from time₃
Time lapse t₇Sometimes shutter 12_-1Opens the next
The object to be weighed is the pool hopper 13_-1It is thrown into. Here, the supply stabilization timer TM5_-1But
During the "H" level (that is, the weighing value of the measuring instrument is not stable)
The next combination signal is input to the left
When the weighing object is selected as a combination, t₈Sometimes
The combination selection signal from the combination selection circuit 35 is a discharge gate
Timer TM1_-1And flip-flop FF1_-1To
It is input (FIG. 5A). For this reason, the discharge gate timer TM1_-1But
T₁It operates for a time (FIG. 5 (c)) and the left storage room 17_-1Inside
Is discharged, and the discharge stabilization timer TM6_-1Is t
₈T from time₁+ T₅Time operation (Fig. 5 (i))
Room 17_-1Weight memory 26 corresponding to_-1"0"
It is memorized. Therefore, the objects to be weighed stored in the right storage chamber
For t₆The weighing measurement started from the time
After the discharge gate in the left storage compartment has closed,
T₈T from time₁+ T₅Time elapsed t₉Sometimes completed
Weighing value calculation circuit 24_-1Weighing complete signal A_-1Comes out
Forced scale 19_-1Memory from stable weighing values
Vessel 26_-1Left storage room 17 stored in_-1ofTarget
MassWeight value (in this caseBecause it has been discharged“0”)
The subtraction is performed, and the subtraction result is stored in the right storage room 18._-1ofWeighed
ThingWeight storage 28 as weight value_-1Is stored. What
OhThe weighing object newly stored in the right storage room in this way
The weighing object in the left storage compartment
If selected and released prior to weighing,
As shown in Fig. 5, the discharge gate of the left storage compartment is closed.
The weighing measurement for the right storage compartment restarted after
Until the discharge hopper of the pool hopper corresponding to the left storage room
The shutter is closed and the shutter is held open.
You. Then, the right storage room 18_-1Housed in
After the detection of the weight of the object is completed,
FF6_-1Is set, the combination permission signal is
It is output to the matching selection circuit 35 (FIG. 5 (k)) and the shutter
Timer TM3_-1Operates (FIG. 5 (e)). [0088] Shutter timer TM3_-1Is t₉Works sometimes
Then the shutter closes again and t₉T from time₂Time has passed
T₁₀Sometimes, the gate timer TM4_-1Is activated and
Circuit 45_-1The output becomes “H” level and the pool
Papper 13_-1Discharge gate 14_-1Open, left storage
Room 17_-1The object to be weighed is stored in the
You. This weighing measurement is performed by the supply stabilization timer TM5.
_-1After the operating time (ie, t₁₀T + T from time₄Time
T spent₁₁Completed) and, as before, this stable
From the measured value, the right storage room 18_-1Weight of the object
The result of the subtraction is the left storage room 17._-1Received in
Weight storage 26 as the weight value of the weighed object_-1Is stored in
The combination permission signal is sent to the combination selection circuit 35 (see FIG.
5 (j)). During this time, the next object to be weighed is
Hopper 13_-1And the following for each combination signal input
Similar control is performed. Further, another discharge control circuit 40_-2~ 40
_-NIn each case, the same control
The weighing objects selected and combined are sequentially collected and discharged.
Is done. As described above, in the above embodiment, one total
Newly stored in one of the storage compartments corresponding to the
While trying to measure the weight
New acquisitions as a result of
Items to be weighed stored in storage rooms other than the stored storage room
If a combination that includes
Close the discharge gate of the hopper, open its shutter, and
Discharge the weighing object in the storage room selected in priority to the measurement.
Because the weight is calculated,
All can participate in the combination operation,
Accuracy is significantly improved. Also, the pool hopper 13_-1~ 13_-Nof
Each discharge gate 14_-1~ 14_-N, 15_-1~ 15_-N
While the shutter is open, the shutter 12_-1~ 12_-NClose
The operator can see the shutter just by looking at the shutter.
It is easy to know when to insert
Damage to the weighing object, overload of the weighing hopper,
No harm occurs. Also, the weighing object of the weighing hopper
Until selected, the corresponding pool hopper inlet is open.
Since it is still in use, use this time to reduce the amount of
It can be adjusted later. [0094] In another embodiment of the present invention, each weighing
There were two storage chambers in each hopper,
Not limited to two, two or more storage rooms
May be provided on the weighing hopper. In the above embodiment,
Supply of the weighing object to the left storage room of the two storage rooms is right
Had priority over supply to the side storage room, but this was the opposite.
Is also good. In the above embodiment, the weight of the object to be weighed is
The combination was selected based on the values.
Obtains the count value from the weighing value of the weighing object, and
Select a combination based on
And a combination selection based on
It can be applied in the same way. [0096] As described above, the combination meter of the present invention
In the weighing method, the weighing
Discharging the weighed object prior to weight measurement
Can also open the discharge gate of the pool hopper
While loading, close the input port with the shutter and
It is made impossible to input. Therefore, all of the objects to be weighed for which the weight has been calculated are
Can always be used for combination selection, and the accuracy of combination is remarkable
Timing when the operator manually inputs the weighing object
Is not mistaken, and there is no obstacle due to erroneous input.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram showing a mechanical unit according to an embodiment of the present invention; FIG. 2 is a block diagram showing a control unit according to an embodiment; FIG. FIG. 4 is a block diagram showing a discharge control circuit according to an embodiment. FIG. 5 is a time chart of FIG. 4. FIG. 6 is a schematic configuration diagram of a conventional combination weighing device. 12 shutter 13 pool hopper 16 weighing hopper 19 weighing device 24 weighing value calculation circuit 26, 28 weight storage 35 combination selection circuit 40 discharge control circuit TM1 discharge gate timer TM2 discharge gate timer TM3 shutter timer TM4 gate timer TM5 supply stability timer TM6 Discharge stabilization timer 52 Square wave oscillator

Claims (1)

(57) [Claims] A step of manually feeding an object to be weighed into an input port with an open shutter and storing it in a plurality of pool hoppers; and an empty storage chamber among a plurality of storage chambers of a weighing hopper located below each of the pool hoppers. Closing the shutter to open the discharge gate of the pool hopper corresponding to the empty storage chamber and discharging the object in the pool hopper to selectively supply the object to be weighed; Closing the discharge gate of the pool hopper discharging the pool hopper and opening the shutter of the input port of the pool hopper, and providing the weight of the weighing hopper receiving the object discharged from the pool hopper to the weighing hopper. Weighing with a weighing device, measuring the weight of the weighing hopper for which
Calculating the weight of the object stored in the storage chamber of the weighing hopper by determining the difference from the weight before the measurement is performed; and Selecting, from the weighing objects, an object to be weighed whose combination weight or combination number is close to or equal to the target amount; and a weighing object newly stored in any of the plurality of storage chambers corresponding to the weighing device. When a combination including objects to be weighed stored in storage rooms other than the newly stored storage room is selected as a result of the selection of the combination performed in parallel when the object is to be measured and measured. The selected
The discharge gate of the corresponding pool hopper to the storage chamber is closed
And while maintaining the state in which the shutter is open, the combination weighing method and a step of performing discharge of the selected the stored objects to be weighed in the room in preference to the weighing measurement.