JPH0577249B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field of the Present Invention> The present invention relates to a combination weighing device that combines and collectively discharges a set amount of weighed objects stored in a plurality of hoppers.

<Prior art> (Figure 6) Combination weighing devices have been used in the past to efficiently group objects to be weighed, such as sweets and fruits, whose individual weights vary by a predetermined weight, into one mass. .

Among this type of combination weighing devices, a large number of combinations can be obtained even with a small number of scales, and highly accurate combination weighing is possible. Therefore, a weighing hopper with multiple storage chambers is provided for one intermediate hopper. There is a combination weighing device.

FIG. 6 is a schematic configuration diagram showing an example of such a combination weighing device in which two storage chambers are provided in each weighing hopper.

In the figure, the objects to be weighed are supplied to each intermediate hopper 1 _-1 to 1 _-o , respectively, to weighing hoppers 2 _-1 to _{2 -o.}
Two storage rooms are provided in each of the storage chambers 3 _-1 ~
3 _-o , _4-1 to 4 _-o , and this measured value is sent to the control unit 6 from the measuring devices _5-1 to _{5 -o} provided for each weighing hopper _2-1 to 2-o. Sent out.

The control unit 6 receives the weight values from each of the scales 5 _-1 to 5 _-o , subtracts weight values other than the weight of the object to be weighed (zero point correction value), such as the weight value of the weighing hopper itself, from the weight values, and calculates the weight values. Based on the zero-point corrected weight values, the weight values of the objects to be weighed stored in each of the storage chambers 3 _-1 to 3 _-o and 4 _-1 to 4 _-o are calculated. Then, based on each weight value or the number of objects to be weighed obtained from this weight value, all different combination calculations are performed, the optimal combination for the set amount is selected, and this selected combination The objects to be weighed in each storage chamber are discharged and collected in a collection chute 7 or the like.

Therefore, in the zero point correction of the above-mentioned scale, the weight value obtained by measuring the weight of the empty weighing hopper at the time of starting the combination weighing device is initially set as the zero point correction value.
During the weighing operation, the zero point correction value may need to be reset at any time because errors in the true correction value may occur due to drift of the measuring instrument due to temperature, etc., or debris from the object to be weighed adhering to the weighing hopper. It becomes necessary.

For this reason, conventionally, when the objects to be weighed in all the storage chambers of the weighing hopper corresponding to the measuring instrument whose new zero point correction value is to be reset are simultaneously selected and discharged, the zero point correction value is reset. I was trying to configure the settings.

<Problems to be Solved by the Present Invention> However, the probability that objects to be weighed in all storage chambers of a weighing hopper are selected in combination at the same time is low (for example, in a plurality of weighing hoppers each having two storage chambers). In this case, the probability of obtaining a combination that includes the objects to be weighed in both storage chambers of any weighing hopper is approximately 1/4). Therefore, even if a measuring instrument whose zero point correction value is to be reset is determined, simultaneous ejection of objects to be weighed will not occur until several combined ejection operations have been performed.

For this reason, there was a problem that the efficiency of resetting the zero point correction value was extremely poor.

<Object of the present invention> The present invention was made in view of the above circumstances, and an object of the present invention is to provide a combination weighing device that efficiently resets the zero point correction value.

<One Embodiment of the Present Invention> (FIGS. 1 to 5) Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a schematic diagram showing a mechanical section of an embodiment of the present invention.

In the figure, numeral 11 is a feeder that sequentially supplies objects to be weighed to a circular feeder 12. N intermediate hoppers 14 _-1 are provided below the periphery of the circular feeder 12.
~14 _-o are arranged in a circle, each with feeder 1
The objects to be weighed are sequentially supplied through _3-1 to 13 _-o .

Weighing hoppers 17 _-1 to 17 _-o are installed below the intermediate hoppers 14 _-1 to 14 _-o , respectively.
Each weighing hopper _17-1 to 17 _-o has two storage chambers 1 separated in the center.
8 _-1 to 18 _-o and 19 _-1 to 19 _-o are provided. The objects to be weighed stored in intermediate hoppers 14 _-1 to 14 _-o are discharged through discharge gates 15 _-1 to 15 _-o , 16 _-1 to 1
When opening 6 _-o , storage chambers _18-1 to 18 _-o ,
_19-1 to 19 _-o .

The weighing hoppers _17-1 to 17 _-o are each provided with a weighing device _20-1 to 20 _-o , and the weight of the contents in either of the two storage chambers can be measured by one weighing device. detected.

A collection chute 23 is arranged below the weighing hoppers 17 _-1 to 17 _-o . Each weighing hopper 17
The objects to be weighed stored in _-1 to 17 _-o fall into the collection chute 23 when the discharge gates 21 _-1 to 21 _-o and 22 _{-1 to} 22 _-o are opened, respectively.

A packaging machine 25 is installed below the collection chute 23. At the bottom of the collection chute 23, a timing hopper 24 is provided which opens at regular intervals.

The weighing signals from the weighing instruments 20 _-1 to 20 _-o are as follows:
Sent to the control unit.

FIG. 2 is a block diagram showing the control section, and the weighing signals from each of the weighing instruments _20-1 to 20 _-o are sent to the weighing value calculation circuits _27-1 to 27 _-o , respectively, and the weighing hopper itself Weight values unrelated to the objects to be weighed, such as weight values, are zero-corrected, and the weight values of the objects to be weighed accommodated in each storage chamber are calculated.

Here, the measured value calculation circuit 27 _-1 is, for example, a third
It is configured as shown in the figure.

In the figure, the weighing signal from the weighing instrument 20 _-1 is
It is input to the subtracter 28 _-1 . In the subtracter 28 _-1 ,
The zero point correction value stored in the correction value storage device 29 _-1 is subtracted from the input measurement value.

The output of subtracter 28 _-1 is input to subtracter 30 _-1 . In the subtracter 30 _-1 , the output of the adder 35 _-1 is subtracted from the input value.

Subtractor 30 _-1 output is switch 31 _-1 , 32 _-1
The weight is stored in the weight storage units 33 _-1 and 34 _-1 via the weight storage units 33 -1 and 34 -1. Weight memory devices 33 _-1 and 34 _-1 are weighing hoppers 1
The weight values of the objects to be weighed are stored in correspondence with the storage chambers _18-1 and _19-1 of _7-1 , and when the objects to be weighed are discharged, the stored contents are reset accordingly. Ru.

Further, the switch 31 _-1 is a switch that is turned ON in response to a measurement completion signal A _-1 indicating that the object to be weighed has been supplied to the storage chamber 18 _-1 and the weighing measurement thereof has been completed. Similarly, the switch 32 _-1 is connected to the storage chamber 19.
This is a switch that is turned ON by the measurement completion signal B _-1 , which indicates that the object to be weighed has been supplied to _-1 and the weighing measurement has been completed.

In addition, switch 36 _-1 is controlled by setting signal C _-1 .
ON, and the measured value at this time is stored in the correction value memory 29.
It is stored and set to _-1 . Note that the other measured value calculation circuits 27 _-2 to _{27 -o} are also configured and provided for each measuring instrument in exactly the same manner as described above.

The weight values of the weighing value calculation circuits _27-1 to 27- _o , _33-1 to _33-o , and _34-1 to 34 _-o are stored in the switches 37 that are turned ON by the combination pattern signal.
_-1 to 37 through _-2o , respectively combinatorial adder 38
sent to.

The combination adder 38 sequentially adds each weight value inputted via the switches 37 _-1 to 37 _-2o that are turned on in response to the combination pattern signal, and outputs the added value to the comparators 39 and 40. The comparator 39 outputs an "H" level when the added value falls within a predetermined weight range (that is, a target combination weight range) preset in the setting device 41, and an "L" level when it is outside the range. Output.

The comparator 40 compares the weight value stored in the minimum storage unit 42 and the added value, and outputs an "H" level when the added value is smaller or equal, and outputs an "L" level when the added value is larger. do.

The outputs of both comparators 39 and 40 are sent to an AND circuit 43.
The AND circuit 43 output is sent as a storage signal to the switch 44 and a pattern storage 53 to be described later. switch 4
4 is when the AND circuit 43 output is “H” level
ON, and the addition output from the combinational adder 38 at this time is stored as a new minimum value.

Therefore, the minimum storage unit 42 stores the minimum combination weight value within the set weight range among the added values sequentially output from the combination adder 38.

It should be noted that the maximum value that can be stored in this minimum storage unit 42 is stored at the beginning of the combination selection operation when the switch 4
5.

On the other hand, the switches _37-1 to _37-2o are connected to a pattern generation circuit 46 that generates all different patterns of 2N bits corresponding to each storage chamber, and a pattern generation circuit 46 that receives a pattern output from this pattern generation circuit 46 and generates a combination pattern. Addition input circuit 47 _-1 that outputs a signal
~47 _-o .

That is, the addition input circuits 47 _-1 to 47 _-o are provided for each measuring instrument 20 _-1 to 20 _-o as shown in FIG. OR circuit 48 _-1
~48 _-o , OR circuit 48 _-1 ~48 _-o output, and zero point correction value reset request signal a _-1 ~a _-o AND circuit 49 _-1 ~49 _-o , and storage Each switch 37 _-1 to 37 is output by the logical sum of the pattern output corresponding to the room and the AND circuit 48 _-1 to 49 _-o output.
_-2o OR circuit 50 _-1 ~ 50 _-o , 51 _-1 ~
51 _-o .

Therefore, the addition input circuits 47 _-1 to 47 _-o are as follows:
When the zero point correction value resetting request signals a _-1 to a _-o are at the "L" level, the switches 37 _-1 to 37 _-2o are controlled according to the pattern output from the pattern generation circuit 46 to request resetting. When the signals a _-1 to _{a -o} are at the "H" level, if at least one of the pattern outputs of the pattern generation circuit 46 is at the "H" level, control is performed so that both corresponding switches are turned on. do.

Note that, when the pattern generation circuit 46 outputs all the different patterns, it sends out an end signal and prepares for the next combination selection.

The combination pattern signals from the addition input circuits 47 _-1 to 47 _-o are stored in the pattern storage device 53 every time the storage signal from the AND circuit 43 is output. Therefore, the pattern storage device 53 stores a pattern corresponding to a combination whose combined weight gives the minimum weight value within a predetermined range.

The combination pattern stored in the pattern storage device 53 is sent to the discharge and supply control devices 54 _-1 to 54 _-o as a combination selection signal when the end signal from the pattern generation circuit 46 is input.

Upon receiving the selection signal, the discharge supply control devices 54 _-1 to 54 _-o select each storage chamber 18 _-1 to 18 _-o , 19 _-1 to
19 _-o discharge gate 21 _-1 ~ 21 _-o , 22 _{-1 ~} 2
2 _- After opening the designated gate of -o and discharging the object to be weighed, close that gate and open the discharge gate of the intermediate hopper corresponding to the discharged storage chamber, and then move the feeder 13 _-1 to 13 _{- o} is driven to supply the object to be weighed to the intermediate hopper that has already been discharged.

Note that this discharge supply control device 54 _-1 to 54 _-o
are the respective control signals to the weighing value calculation circuits 27 _-1 to 27 _-o (i.e., measurement completion signals A _-1 to A _-o , B _-1 to
B _-o and setting signals C _-1 to C _-o ) are sent out.

FIG. 5 is a block diagram schematically showing the discharge supply control device _54-1 .

In the figure, the selection signal from the pattern memory 53 is transmitted to the storage chambers 18 _-1 on the left and right of the weighing hopper 17 _-1 ,
The discharge gate opening/closing circuits 55 _-1 and 56 -1 provided corresponding to the discharge gates 19 _-1 and 56 _-1 are respectively sent out.

When receiving the selection signal, the discharge gate opening/closing circuits 55 _-1 and 56 _-1 send discharge signals to the corresponding discharge gates 21 _-1 and 22 _-1 of the weighing hopper 17 _-1 for a predetermined period of time.

Further, this selection signal is sent to the detection circuit 57 _-1 together with the zero point correction value reset request signal a _-1 .

The detection circuit _57-1 detects when both the two selection signals are input when the reset request signal a _-1 is input, and switches the input from the intermediate hopper _14-1 to the weighing hopper _17-1. A stop signal for temporarily stopping the supply of objects to be weighed and correction of the measured value of the measuring instrument 20 _-1 after a predetermined time has elapsed since the objects to be weighed from both storage chambers 18 _-1 and 19 _-1 were discharged. It outputs a setting signal C _-1 for resetting the value memory 29 _-1 .

The discharge signals from the discharge gate opening and closing circuits 55 _-1 and 56 _-1 are sent to both intermediate gate opening and closing circuits 58 _-1 and 59 _-1 , and also to the priority circuit 60 _-1 .

The intermediate gate opening/closing circuits 58 _-1 , 59 _-1 operate after the discharge gates 21 _-1 , 22 _-1 open and close according to the discharge signal, and operate the corresponding discharge gates 15 _-1 , 16 of the intermediate hopper 14 _-1 . _-1 is opened and closed for a specified period of time.

The priority circuit 60 _-1 receives the stop signal from the detection circuit 57 _-1 and the discharge signals from the discharge gate opening/closing circuits 55 _-1 and 56 _-1 , and opens/closes the intermediate gate when the stop signal is input. The operation of the circuits 58 _-1 and 59 _-1 is stopped for a predetermined period of time, and when only two discharge signals are input without a stop signal being input, the intermediate gate opening/closing circuit 58 _-1 is activated preferentially. , when a predetermined period of time has elapsed, the intermediate gate opening/closing circuit 59 on the other side
Activate _-1 .

The accommodation signals sent from the intermediate gate opening/closing circuits 58 _-1 , 59 _-1 are sent to the discharge gates 15 _-1 , 16 _-1 of the intermediate hopper 14 _-1 , and the measurement completion timers 61 _-1 , 62 _-1 And feeder drive circuit 6
3 _-1 is sent.

The measurement completion timers 61 _-1 and 62 _-1 are set for a predetermined period of time (i.e., after the opening and closing operations of the discharge gates _{15 -1 and} 16 _-1 by the accommodation signals of the intermediate gate opening and closing circuits 58 _-1 and 59 -1 are completed). After a period of time (from when the object to be weighed is stored until the measured value of the measuring instrument 20 _-1 becomes stable), measurement completion signals A _-1 and B _-1 are output to the measured value calculation circuit 27 _-1 .

The feeder drive circuit 63 _-1 operates after the opening and closing operations of the discharge gates 15 _-1 and 16 _{-1 are completed in response to the accommodation signals from the intermediate gate opening and closing circuits 58 -1 and 59 -1 , and} moves the feeder 13 _-1 to a predetermined position. Drive only time.

<Operation of the above embodiment> Next, the operation of the combination weighing device according to the above embodiment will be described.

The objects to be weighed are supplied from the supply device 11 to the feeders 13 _-1 to 13 _-o via the circular feeder 12 and are respectively supplied to the intermediate hoppers 14 _-1 to 14 _-o , and weighing hoppers 17 _-1 to 17 _-o one side storage room 1
It is accommodated in _8-1 to 18 _-o .

At this time, sufficiently stable measured values from the measuring instruments 20 _-1 to 20 _-o are obtained by the measured value calculation circuits 27 _-1 to 27
_-o , the zero point correction value is subtracted, and the addition value (in this case "0") from the adders 35 _-1 to 35 _-o is subtracted, and the result of this subtraction is the one side storage chamber 18 _-1 ~18 _-o are stored in the weight storage devices _33-1 to 33 _-o as the weight values of the objects to be weighed.

Further, the objects to be weighed that are then fed from the feeders 13 _-1 to 13 _-o to the intermediate hoppers 14 _-1 to 14 _-o are stored in the storage chambers 19 _-1 to 19 _-o on the other side, and are similarly placed in the storage chambers 19 -1 to 19 -o. The zero point correction value has been subtracted and the storage chamber 18 _-1 has already been subtracted.
~18 _-o The weight value of the stored object to be weighed is subtracted, and this subtraction result is transferred to the other side storage chamber 19 _-1 ~19
_-o is stored in the weight storage devices 34 _-1 to 34 _-o as the weight value of the object to be weighed.

Each weight memory device _33-1 to 33 _-o , _{34-1 to} 34 _-o
The weight value of the object to be weighed stored in the
7 _-1 to 37 _-2o to the combinational adder 38.

At this time, the zero point correction value reset request signal a _-1 to a _-o
are all at the "L" level, the switches _37-1 to _37-2o are turned on and off according to the pattern output of the pattern generation circuit 46, and the addition outputs are sequentially sent to the comparators 39 and 40, Among all different combination patterns, within the set weight range,
The combination pattern that gives the minimum weight is stored in pattern storage 53.

When all the combinations have been added, the pattern signal stored in the pattern storage device 53 is used as a combination selection signal by the discharge supply control devices 54 _-1 to 54
- sent to _o .

Here, for example, storage chamber 1 of weighing hopper 17 _-1
If a combination including the objects to be weighed housed in _8-1 and _19-1 is selected, the discharge supply control device 5
The discharge gate opening/closing circuits 55 _-1 and 56 _-1 of _4-1 operate, and the discharge gates 21 _-1 and 2 of the weighing hopper 17 _-1 operate.
2 _-1 opens and closes for a predetermined period of time.

As a result, the objects to be weighed in both storage chambers 18 _-1 and 19 _-1 are discharged to the collection chute 23 together with other objects to be weighed that have been selected for combination.

At this time, the weight storage devices 33 _-1 and 34 _-1 of the weighing value calculation circuit 27 _-1 are reset, and the stored contents become "0".

The objects to be weighed gathered in the collecting chute 23 are packaged by the packaging machine 25 when the timing hopper 24 is opened. During this time, the intermediate gate opening/closing circuit 58 _- is controlled by the priority circuit 60 _-1 . ₁ is activated, one discharge gate 15 _-1 of the intermediate hopper 14 _-1
is opened and the next object to be weighed is placed in the empty storage chamber 1.
It will be accommodated in _8-1 .

When a predetermined period of time has elapsed since the object to be weighed was stored in the storage chamber _18-1 , a measurement completion signal A _-1 is sent from the measurement completion timer _61-1 to the switch _31-1 of the weighed value calculation circuit _27-1 . The sufficiently stable weight value from the scale 20 _-1 is zero-corrected in the same manner as described above, and the weight value on the other side (in this case "0") is subtracted and stored in the weight memory 33 _-1 .

Also, during this time, a new object to be weighed is being supplied from the feeder _13-1 to the intermediate hopper _14-1 by the feeder drive circuit _63-1 , and after the measurement completion signal A _-1 is sent out, The priority circuit 60 _-1 operates the intermediate gate opening/closing circuit 59 _-1 , and the object to be weighed is stored in the storage chamber 19 _-1 on the other side.

When a predetermined period of time has elapsed since the object to be weighed was stored in the other storage chamber 19 _-1 , a measurement completion signal B _-1 is sent from the measurement completion timer 62 _-1 to the switch 32 _-1 of the weighing value calculation circuit 27 _-1 . , the measuring instrument 20 as above
The sufficiently stable weight value from _-1 is zero-point corrected, the weight value of the object to be weighed already accommodated in the storage chamber 18 _-1 on one side is subtracted, and the weight value is stored in the weight memory 34.
_-1 is stored.

In this way, new weight values of the objects to be weighed are stored in the weight memories 33 _-1 and 34 _-1 , the next combination is selected in the same manner as described above, and the combined discharge of the objects to be weighed is repeated.

Here, for example, when resetting the zero point correction value of the measuring instrument _20-1 , an "H" level reset request signal a _-1 is input to the addition input circuit _47-1 and the detection circuit _57-1 .

When the reset request signal a _-1 is input to the addition input circuit 47 _-1 , the switches 37 _-1 and 37 _-2 are simultaneously turned ON and OFF in accordance with the pattern output from the pattern generation circuit 46.

Therefore, instead of the weight values that were input to the combination adder 38 independently from both weight memories 33 _-1 and 34 _-1 , the weight value obtained by adding each of them is input to the combination adder 38. Become.

When this added weight value is selected for the combination,
The objects to be weighed stored in the storage chambers 18 _-1 and 19 _-1 are
The objects to be weighed are discharged from the weighing hopper _17-1 by the discharge gate opening/closing circuits _55-1 and _56-1 , and collected in the collection chute 23 together with other objects to be weighed whose combinations have been selected.

At this time, the priority circuit 60 _-1 includes the detection circuit 57 _-1
Since the stop signal is being sent from the intermediate gate opening/closing circuit _58-1 , _59-1 , the setting signal
C _-1 is sent to the switch _36-1 of the weighing value calculation circuit _27-1 , and the weighing value at this time is the correction value storage 29.
Reset to _-1 .

When the reset of the zero point correction value is completed, the detection circuit 5
Since the stop signal from _7-1 to the priority circuit _60-1 is turned off, the operation of discharging and supplying the object to be weighed is restarted in the same manner as described above.

As described above, the operation of gathering and discharging objects to be weighed and the operation of resetting the zero point correction value of each weighing device are repeated.

<Other embodiments of the present invention> In the above embodiments, the weight values of the objects to be weighed stored in each storage chamber were combined to select a combination for the set weight. The same method can be applied to selecting a combination for a set number of pieces by combining the number of pieces obtained from the weight values of .

Further, in the above embodiment, the operation of supplying the object to be weighed to the intermediate hopper is automatically performed, but the present invention similarly applies to an operation in which the object to be weighed is manually fed to the intermediate hopper. Can be applied.

Furthermore, in the above embodiment, instead of the individual values of the objects to be weighed stored in all the storage chambers of the weighing hopper corresponding to the weighing instrument whose zero point correction value is to be reset, only the total value of the weighing objects participates in the combination addition. In order to
The combination pattern was controlled by adding the weight values or piece values of the objects to be weighed stored in all the storage chambers in advance, and making this added value participate in the combination addition. Good too.

<Effects of the present invention> As is clear from the above explanation, the combination weighing device of the present invention is housed in all the storage chambers of the weighing hopper corresponding to the measuring instrument whose zero point correction value is to be reset. Instead of the individual values of the objects to be weighed, only their total value is input to the combination selection means. Therefore, the number of combinations to be selected is reduced, and the probability that this added value is selected as a combination is increased, and the efficiency of resetting the zero point correction value is significantly improved.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing a mechanism section of an embodiment of the present invention, FIG. 2 is a block diagram showing a control section of an embodiment of the present invention, and FIG. 3 is a diagram of FIGS. 4 and 5. teeth,
FIG. 3 is a diagram showing a main part of FIG. 2; FIG. 6 is a schematic diagram showing a conventional combination weighing device. 13 _-1 ~13 _-o ... feeder, 14 _-1 ~14 _-o
...Intermediate hopper, 17 _-1 to 17 _-o ...Measuring hopper, 18 _-1 to 18 _-o , 19 _-1 to 19 _-o ...Storage room, 20 _-1 to 20 _-o ...Weighing device, 27 _-1 ~27 _-o
...Measurement value calculation circuit, 38...Combination adder, 4
6... Pattern generation circuit, 47 _-1 to 47 _-o ... Addition input circuit, 53... Pattern storage device, 54 _-1 to
54 _-o ...Emission supply control device.

Claims (1)

[Scope of Claims] 1. A plurality of weighing hoppers each having a plurality of independent storage chambers; a weighing hopper provided corresponding to the plurality of weighing hoppers for selectively transferring supplied objects to be weighed to the plurality of storage chambers; a plurality of intermediate hoppers accommodated in the weighing hoppers; a plurality of weighing instruments provided for each of the plurality of weighing hoppers and outputting weighing values according to the weight of the weighing hopper itself and the weight of the object to be weighed accommodated in the weighing hoppers; and; Calculating means that performs zero point correction by subtracting the measured values of the plurality of measuring instruments to their respective zero point correction values, and calculates the weight value or piece value of the objects to be weighed stored in each storage chamber based on the correction results. and; combination selection means for combining and adding the weight values or number values of the objects to be weighed for each storage chamber obtained by the calculation means, and selecting a combination in which the added value is close to or equal to a predetermined set amount; The objects to be weighed selected by the combination selection means are discharged from each storage chamber of the weighing hopper, and the next object to be weighed is stored from the corresponding intermediate hopper into each empty storage chamber. a discharge/supply control means for causing the zero point correction value to be reset; an addition input means for allowing only the total value of numerical values to participate in the combination addition of the combination selection means; the total weight value or total piece value participating in the combination addition by the addition input means is combined by the combination selection means; detecting that objects to be weighed stored in all storage chambers of the weighing hopper corresponding to the selected measuring instrument whose zero point correction value is to be reset are simultaneously discharged by the discharge supply control means; , a setting means for temporarily stopping the operation of storing objects to be weighed from the intermediate hopper into the weighing hopper by the discharge supply control means, and resetting the measured value from the measuring instrument as a new zero point correction value during the stop; A combination weighing device characterized by comprising: