JPS62157531A - Combined weighing apparatus - Google Patents

Abstract

PURPOSE:To prevent deterioration in the accuracy of a combination weight without reducing the number of storage chamber for selection, by combining an object to be weighed already measured in another storage chamber during the weighing in any storage chamber to discharge them selectively. CONSTITUTION:Objects to be weighed are held into respective storage chambers 171-17n of intermediate hoppers 141-14n and weighing hoppers 161-16n the weight values thereof are memorized into memories 261-26n and 281-28n of computing circuits 241-24n of a controller 23. A combination calculation section 35a of a selection circuit 35 calculates a combination weight about all different combinations based on the weighed values of the storage chamber when combination allowable signals are 'H' and a discriminator section 35c discriminates the optimum combination weight with respect to a set weight at a setting section 35b and a combination selection signals corresponding to each of the selected storage chambers are sent out to supply/discharge control circuits 401-40n. For every weighing hopper, the same combination selection is made to discharge objects to be weighed of the selected storage chamber sequentially and gathered into a packaging machine 22 through a gathering chute 20 and a timing hopper 21.

Description

[Detailed description of the invention] Industrial application field of the present invention> The present invention relates to a combination weighing device.

<Prior art> (Fig. 5) When weighing objects with individual variations of 1,000 m are combined into a predetermined stack, the accuracy of the combined weight increases as the number of combinations increases. A combination weighing device as shown in FIG. 5 is used.

That is, the objects to be weighed that are supplied from the plurality of feeders 11 to 1n to the intermediate hoppers 21 to 2n, respectively, are transferred to the intermediate hoppers 21 to 2n.
~2n discharge gates 31~3211 to weigh hopper 41
-4n are sequentially supplied to the respective storage chambers 51 to 5 buttons. The objects to be weighed supplied to each of the storage chambers 51 to 5 are sequentially weighed and measured by scales 61 to 6n provided for each weighing hopper 41 to 4n. This weighing signal is transmitted to the control device 7.
is sent to , and by each measurement value and the calculation of the measurement value,
The weight value of the object to be weighed stored in each of the storage chambers 51 to 5 is determined, and each tI! Combination calculations of quantity values are performed.

As a result of this combination calculation, an optimal combination is selected, and the storage chambers 51 to 521 that store the selected objects to be weighed are
The discharge gates 81 to 8zn of 1 are opened, and the selected objects to be weighed are collected and discharged via the collection chute 9.

Feeders 11 to 2n are placed in the empty intermediate hoppers 21 to 2n.
The objects to be weighed are supplied from 1n, and the objects to be weighed δ1 are sequentially supplied to the storage chambers 51 to 5211 of the weighing hoppers 41 to 4n, which have been emptied after combination selection. A combination calculation is performed on the objects to be weighed stored in each storage chamber of the weighing hoppers 41 to 4n.
The objects to be weighed are collectively discharged.

<Problems to be Solved by the Present Invention> However, in the conventional combination weighing device as described above, for example, an object to be weighed is placed in one of the storage chambers of a certain weighing hopper, and then the weighing measurement is performed. During this time, in order to not disturb the weighing and measurement, the control wave e is activated so that the objects to be weighed stored in other storage chambers are not used for combination selection.
It is controlled by 7.

For this reason, there is a problem in that the number of storage chambers that can be used for combination selection is reduced, and the accuracy of the combination weight is extremely deteriorated.

OBJECT OF THE INVENTION The present invention has been made in view of the above circumstances, and it is possible to improve the accuracy of the combined weight even when the object to be weighed is put into one of the storage chambers of the weighing hopper and is being weighed. The purpose of the present invention is to provide a combination weighing device that does not worsen the problem.

An embodiment of the present invention (Figures 1 to 4) - Hereinafter, the present invention will be explained in detail based on the drawings.

FIG. 1 is a schematic configuration diagram showing one embodiment of the present invention, and FIG. 2 is a block diagram showing main parts of the control device.

In the figure, numeral 11 is a feeder that sequentially supplies objects to be weighed to a circular feeder 12. N intermediate hoppers 141 to 14n are arranged in a circle below the periphery of the circular feeder 12, and objects to be weighed are sequentially supplied through the feeders 131 to 13n, respectively.

Below the intermediate hoppers 14X to 14n, there are weighing hoppers 16+ to 16 each having two storage chambers 171 to 17m.
n is installed. When the discharge gates 15+ to 15 areas are opened, the objects to be weighed stored in the intermediate hoppers 14+ to 14n are transferred to the storage chambers 17+ to 17+ of the weighing hoppers 16+ to 16n, respectively.
It falls and is stored in 17zn.

Each of the weighing hoppers 161 to 16r+ has a total of 1
81 to 18n are installed, and the weight of the contents in any of the 2vA storage chambers is detected by one measuring device.

- A collection chute 20 is installed below the weighing hoppers 161 to 16n. The objects to be weighed accommodated in each of the weighing hoppers 161 to 16n are discharged through discharge gates 191 to 191, respectively.
When the 9 is opened, it falls into the collection chute 20.

A packaging machine 22 is installed below the collection chute 20. A timing hopper 21 is provided at the bottom of the collection chute 20 to listen at regular intervals.

The measured value signals from the measuring instruments 181 to 18n are sent to the measured value calculation circuits 24+ to 24n of the control device 23.

The weighing value calculation circuits 241 to 24n receive the weighing value signal and calculate, for each weighing hopper, one value per weight of the object to be weighed stored in each storage chamber 171 to 17 of each weighing hopper 161 to 16n. , and store their respective weight values.

That is, as shown in FIG. 2, the measured value from the scale 181 is sent to the subtractor 25t, which stores the weight value of the object to be weighed in the storage chamber 171 on one side (for example, the left side) of the weighing hopper 161. The value stored in the weight memory 261 is subtracted. This subtraction result is transmitted to the other (right side)
The weight memory 2 stores the weight value of the object to be weighed in the storage chamber 172.
81.

Similarly, the weight value input to the subtracter 291 is input to the weight memory 28! The stored value is subtracted, and this subtraction result is turned ON by the opening/closing signal B, which will be described later.
One (left) storage chamber 1
It is stored in the weight storage device 261 as the weight ffl value of the object to be weighed of 7+.

Note that when the object to be weighed stored in either storage chamber is discharged, ``0'' grams is synchronously stored in the weight storage device corresponding to the discharged storage chamber via switch 311 or switch 321. Here, the switch 31+ is a switch that opens and closes in response to a discharge signal C, which will be described later, and similarly, the switch 321 is a switch that opens and closes in response to a discharge signal.

The weight values of the objects to be weighed in each of the storage chambers 171 to 17zn stored in each of the weight storage devices 26+ to 26n and 28+ to 28n are sent to the combination selection circuit 35.

The combination selection circuit 35 includes a combination calculation section 35a that calculates all different combinations based on the weight values of the objects to be weighed in each of the storage chambers 171 to 17 buttons, and a weight setting section 35b that stores and sets a set weight. Compare the combination weight output of the combination calculation section 35a and the set weight output of the failure setting section 35b,
It includes a determining section 35C that determines the combination of weighing hoppers that has the smallest difference from the set weight and outputs a combination selection signal.

The supply and discharge control circuits 401 to 40n receive the combination sorting signal and control the corresponding weighing hoppers 161 to 16n.
A designated one of the discharge gates 191 to 192n is opened to discharge the object to be weighed, and the discharge gate of the intermediate hopper to the storage chamber of the weighing hopper which has been discharged is opened.

Further, the feeder corresponding to the empty intermediate hopper is driven to supply the object to be weighed to the empty intermediate hopper.

For example, the supply/discharge control circuit 401 is configured as shown in FIG. 3.

In the figure, combination selection signals from the combination selection circuit 35 are input to discharge gate timers TM111TM21 corresponding to the left and right storage chambers 17x and 172, respectively. The ejection gate timers TM1L and TM2+ are composed of multivibrators, etc., and when a pulse is input, they wait for a certain period of time T+ (i.e., the time required for the object to be weighed to be completely ejected from the storage chamber) from the rise of the input pulse. "H° level voltage is output. The output of the discharge gate timer TM11 is used as the discharge signal D1 to open and close the switch 32+ of the measurement value processing circuit 24I, and to open and close the discharge gate on the side of the storage chamber 17+. The output of the discharge gate timer TM2+ is used as the discharge signal C1 to open and close the switch 311 of the measured value calculation circuit 241, thereby opening and closing the discharge gate on the storage chamber 172 side.

Ejection gate timer TM1+ corresponding to right side storage chamber 17+
The combination selection signal input to the FF11 is input to the clock input of the delay type flip-flop FF11. The D input of the flip-flop FF11 is fixed at the 111H level, its output Q is sent as a combination permission signal to the combination selection circuit 35 (not shown), and its inverted output Φ is one input of the AND circuit 411. input to the terminal.

The output of the discharge gate timer TM1+ is inverted and input to the other input terminal of the AND circuit 411 via an inverter 421.

The output of the AND circuit 411 is the output of the three-person AND circuit 431.
is input to the first input terminal of. AND circuit 431
The output is a set/reset type flip 70-tube FF.
21 and is input to the OR circuit 44.
It is input to one input terminal of 1. In addition, the inverted output Φ of the flip-flop F21 is input to the second input terminal of the AND circuit 43+, and the output Q is input to one input terminal of the AND circuit 45+ and one of the AND circuits 461. is being input to the input terminal.

The output of the AND circuit 461 is the flip-flop FF1+
The signal is input to the set terminal of the flip-flop FF21, the reset terminal of the flip-flop FF21, and one input terminal of the OR circuit 471. Further, the output of this AND circuit 46s is sent to the weighing value calculation circuit 24! as the weighing measurement completion signal B1! Open/close switch 30+.

On the other hand, the output of the OR circuit 44+ is input to one input terminal of the AND circuit 481, and the output of the AND circuit 481 is input to the set terminal of the delay type 7-lip-flop FF31. The D input of the flip 70 tube FF3+ is fixed at L'' level, and its output Q is input to one input terminal of the NOR circuit 491.
The output of 1 is input to the other input terminal of the AND circuit 481. Further, the inverted output 0 of the flip-flop FF3+ is input to one input terminal of the NOR circuit 501. The output of the NOR circuit 50r is the intermediate gate timer TM3.
+, and the intermediate gate timer T M 3 s
When a pulse is input, there is a certain time T from the rise of the pulse.
2 (that is, the time required for the object to be weighed to be completely discharged from the intermediate hopper).

The output of the intermediate gate timer TM3+ is the AND path 451.
is input to the other input terminal of AND circuit 45! The output becomes a signal output for opening and closing the discharge gate 151 of the intermediate hopper 141 corresponding to the left storage chamber 17+ of the weighing hopper 161. The intermediate gate timer TM31 output is input to the clock input of the flip-flop FF3+ and the other input terminal of the NOR circuit 49], and is also input to the feeder drive timer TM31 via the inverter 51+.
41. Feeder drive timer T M 4
l is the other input terminal of the current amplifier 52+ and the NOR circuit 50+, which outputs the HIT level output for a certain period of time T3 from the rise of the input pulse (i.e., the time required to supply approximately a predetermined amount of the object to be weighed to the intermediate hopper). Send to. Current amplifier 521 drives feeder 131 while the output from feeder drive timer TM4+ is at the "H" level.

Further, the output of the intermediate gate timer TM3+ is input to one input terminal of the AND circuit 53r, and the other input terminal of the AND circuit 531 is input to the rectangular wave oscillator 54.
! The square wave output from is added. AND circuit 53
The output of 1 is input to the supply stability timer TM51, and the supply stability timer TM51 waits for a certain period of time T4 from the rise of the input pulse (in other words, the object to be weighed falls and is supplied to the hopper, and its weight value becomes stable). (time until
Output HII level. In addition, this supply stability timer T
M51 is a re-trigger type timer that holds the output at "H" level for approximately T4 from that point on when the next pulse is input during the timer operation.

The output of the square wave oscillator 541 is sent to the AND circuit 55! is also input to one input terminal of the AND circuit 55]
The other input terminal of the discharge gate timer TM1r, T
The output of an OR circuit 561 having the output of M2t as an input is input. The output of the AND circuit 55s is input to the discharge stabilization timer TM6-1.
M61 is a certain period of time Ts (
That is, the HIT level voltage is output for a period of time (from when the object to be weighed is discharged from the weighing hopper until the weighing instrument stabilizes).

This discharge stability timer TM6+ is the supply stability timer TM
5 Similarly to l, when the next pulse is input during the timer operation, the output is roughly T5 from that point on “F(
It is a retrigger type timer that holds the timer at the ``level.''

The outputs of the supply stability timer TM5+ and the discharge stability timer TM61 are input to both input terminals of the NOR circuit 571.
The output of the NOR circuit 571 is a delay type flip 70 tube F.
It is input to the clock input of F4+. flip 70
The D input of the knob FF 41 is fixed at the H11 level, and its output Q is input to the other input terminal of the AND circuit 461. In addition, the flip-flop FF 4
The output of the OR circuit 471 is input to the reset terminal of 1.

On the other hand, the discharge gate timer T corresponds to the right storage chamber 172.
Similar to the left side, the combination selection signal input to M2t is input to the clock input of a delay type flip-flop FF5t whose D input is fixed at the "L" level. The output Q is sent to the combination U selection circuit 35 as a combination permission signal (not shown), and its inverted output O is input to one input terminal of the AND circuit 581, and the other input terminal is connected to the discharge gate timer TM2+. The output of the inverter 59t is inverted and inputted via the inverter 59t.

The output of the AND circuit 581 is the three-person AND circuit 60]
The output of the AND circuit 411 is input to the first input terminal of the inverter 6, and the output of the AND circuit 411 is input to the second input terminal of the inverter 6.
It is invertedly inputted via 11. Furthermore, the inverted output 0 of the flip-flop FF21 is input to the third input terminal.

The output of the AND circuit 601 is input to the set terminal of the set/reset type flip 70-tube FF6z, and is also input to the other input terminal of the OR circuit 441. Further, the inverted output 0 of the flip-flop FF 6 , s is inputted to the third input terminal of the AND circuit 431, and the output Q is input to the two AND circuits 62+ , 6
3t are each input to one input terminal.

The output of the intermediate gate timer T M 3 + is input to the other input terminal of the AND circuit 62+, and the output of the AND circuit 621 is inputted to the other input terminal of the weighing hopper 16! The discharge gate 152 of the intermediate hopper 141 corresponding to the right storage chamber 172 of
This is the signal output for opening and closing.

In addition, the other input terminal of one AND circuit 63+ has
The output Q of the flip-flop FF4r is input, and the output of the AND circuit 631 is input to the flip-flop FF4r.
The signal is input to the set terminal of the flip-flop FF61 and the reset terminal of the flip-flop FF61, and is also input to the other input terminal of the OR circuit 47r. Further, the output of the AND circuit 631 opens and closes the switch 271 of the weighing value calculation circuit 241 as the weighing measurement completion signal A1.

In addition, the above-mentioned measured value calculation circuit 241 and the supply/emission control circuit 40+ are connected to each total ffi! N sets are provided in exactly the same manner every 181 to 18n.

Operation of the above embodiment> Next, the operation of the above embodiment will be explained based on the drawings and the time chart of FIG.

In advance, the storage chambers 171 to 17n of all the intermediate hoppers 141 to 14n and the weighing hoppers 16t to 16n accommodate objects to be weighed, and a total of ff1 (a performance circuits 241 to
It is assumed that the weight storage units 261 to 26n and 281 to 28n of 24n store respective weight values.

Moreover, the flip-flops FF1s to FF1n, FF of the supply and discharge control circuits 401 to 40n
It is assumed that 5t to FF5n are set, the other flips 70 are in a reset state, and each timer is not in an operating state.

The weight storage values of the weight value calculation circuits 241 to 24n are sent to the combination calculation section 35a of the combination selection circuit 35.

The combination calculating section 35a of the combination selection circuit 35 calculates the weight fl of the storage chamber whose combination permission signal is 41 H' level.
Based on llfli, calculate the combination weight for all different combinations. The determining unit 35c determines the optimal combination weight for the set weight set in the m-minute setting unit 36b, and as a result, a combination sorting signal corresponding to each storage chamber selected for combination is supplied to the discharge control circuits 401 to 401. 40n
Send to.

Here, for example, the storage chambers 171 to 1 of the weighing hopper 16+
When the objects to be weighed stored in 7n are simultaneously selected for rough combination selection, combination selection signals are input to both discharge gate timers TM1+ and TM2s at time to, as shown in the time chart of FIG. (Figure 4 (a), (b)
).

When the combination sorting signal is input, both discharge gate timers T
M11. Both TM2t operate, and as shown in (C) and (d), their outputs reach the "H" level from time to to T + time. This output is used as discharge signals @C1 and Dl to control the discharge of the weighing hopper 161. The gates 191 and 192 are opened to allow the objects to be weighed stored in the storage chambers 171 and 172 to fall and collect in the collection chute 2o, and the weighing value calculation circuit 2
41 switches 31+ and 32t, both switches 31+ and 32+ are turned on, and both weight storage devices 261.2
81L Ha”O” is a memory salel.

Also, from time to, both discharge gate timers TM11 and TM
21 output becomes 118 j+, the discharge stabilization timer TM6+ operates, and its output becomes T+ +T5 time II HJ lebel (FIG. 4(i)).

In addition, due to the input of the combination selection signal, the output Q of the 7-rip 70-tube FF1+ and FF5t are both 1 from the time of to.
1 L" level (Fig. 4 (j), (k)), and the inverted output 0 becomes "H" level. At 11 o'clock, T+ time elapsed from the time to, the output of the discharge gate timer TM1+ becomes "'
Since the level is L'', the output of the AND circuit 41! is H''.
level, the AND circuit 431 flips the positive pulse to the set terminal of the FF 21 and the OR circuit 44.
Output to 1. On the other hand, AND circuit 58! Similarly, the output of the AND circuit 601 remains at the "L" level due to the inverter 61+.

The output Q of the flip 70-tube FF2+ set by the AND circuit 431 becomes the "11" level and is input to the AND circuit 451. Also, the positive pulse from the AND circuit 431 is the OR circuit 44! In order to set the flip-flop F F 31- via the AND circuit 481, its inverted output O operates the intermediate gate timer TM31 via the NOR circuit 511. Intermediate gate timer T
Since M 3 t outputs the T2 time it HIT level from 11 o'clock, the output of the AND circuit 451 synchronizes with this and outputs the T2 time "11" level.
)).

Furthermore, at this time, since the flip-flop FF6z is not set, the output of the AND circuit 621 remains at the L II level (FIG. 4(f)).

Further, when the output of the AND circuit 45+ reaches the "H°" level, the left side discharge gate 151 of the intermediate hopper 141 is opened, and the 1lItm object is transferred to the left side storage chamber 1 of the weighing hopper 161.
71, and the weighing measurement by the measuring instrument 181 is started.

Furthermore, at 11 o'clock, the intermediate gate timer TM31 is set to ``H''.
When it reaches the level, the falling stability timer Ding M5! is activated,
The output reaches the 11 El'' level at time T2 + T4 (FIG. 4(h)).

Then, 12 hours later, at 2 o'clock, the intermediate gate timer TM
3 When the r output changes to “L” level, inverter 5
Feeder drive timer TM4 via 1+! is activated, and its output is at the 1'' level from time t2 to time T3 (Fig. 4 (g)). This H'' level output is output from the current amplifier 521.
The feeder 131 is driven, and the new object to be weighed is transferred to the feeder 13! from there to the intermediate hopper 141.

At time t3, when 2+T4 hours have elapsed since 11 o'clock, the output of the fall stability timer TM51 changes to the L" level, so the clock input of the flip-flop FF41 rises, and its output Q is set to the "H' level. This output Q is
Flip-flop FF1+ is set via AND circuit 46+, and flip-flop FF2t and flip-flop FF41 are reset.

Therefore, the output Q of flip-flop FF1z is '1
-1'' level (FIG. 4(j)), and is sent to the combination selection circuit 35 as a combination permission signal.

Further, at this time (at 13:00), the positive pulse of the AND circuit 461 is sent to the total ffi Ia calculation circuit 24+ as the completion signal B1 of liver and bile measurement, and the switch 30+ is turned on.

As a result, the sufficiently stable weight value of the object to be weighed from the weighing device 181 is reduced, and the value stored in the weight memory 28+ (II O11 in this case) which stores the weight value of the object to be weighed in the right storage chamber 172 is reduced. It is then stored in the weight storage device 26+ as the weight value of the left storage chamber 17+.

Through the above steps, a total of six measurements of the objects to be weighed supplied to the left storage chamber 171 have been completed, and this weight value is transferred to the combination selection circuit 35.
sent to.

At 13:00 when the weighing measurement of the right side storage chamber 171 is completed, the inverted output 0 of the flip-flop FF1+ becomes the 11 L 11 level, so the output of the AND circuit 411 also becomes the "L" level. The signal is input to the AND circuit 60+, and since the other inputs also remain at the "H" level, the output of the AND circuit 60+ becomes the "H" level and the flip-flop FF6+ is set.

When the flip-flop FF6+ is set, the FF:
3+ is set, the intermediate gate timer T M 3 s operates, and the output of the AND circuit 621 becomes at the 11 H*T level from 13:00 to T2 time (FIG. 4(f)).

Therefore, the discharge gate 152 on the right side of the intermediate hopper 141
is opened and the object to be weighed is placed in the right storage chamber 1 of the weighing hopper 16+.
72, and the weighing measurement by the measuring instrument 181 is started.

Then, the intermediate gate timer TM31 starts T2 from 13:00.
When the feeder drive timer T M 4 I returns to the #L 7 level after the time IIfl, the feeder drive timer T M 4 I is activated and the corrected m objects are supplied to the intermediate hopper 14+ (FIG. 4(g)).

Furthermore, when the intermediate gate timer TM3+ reaches the ``tabil bell'' at 13:00, the fall stability timer TM51 operates again, and its output continues for 72 + 74 hours from 13:00 (i.e.,
(until the value measured by the weighing device 181 becomes sufficiently stable)
“It will reach the HII level (Figure 4 (c)).

At 14 o'clock during this glffl measurement, the combination selection circuit 35 selects +
When the weight values of the 71 items are selected for combination, a combination selection signal is input to the discharge gate timer TM1+ (FIG. 4(a)).

When the sorting signal is input, the discharge gate timer TM1+ is activated in the same manner as described above (Fig. 4 (C)), and the total M hopper 16 is activated.
] The discharge gate 19+ of the left storage chamber 17+ is opened for T1 time, and the switch 321 of the weighing value calculation circuit 241 is turned ON.
, the weight! ! 0'' is stored in the device 26. Also, since the output of the discharge gate timer TM1+ has reached the PAT1'' level, the discharge stability timer TM6+ is activated from 2:00 p.m.
The output becomes 11 HII level for time T1+T5.

Therefore, the clock input to the flip-flop FF4'+ does not rise until the output of the discharge stabilization timer TM6r returns to the "L" level.

At time t5, when the time Tr + Ts has elapsed since 14:00, the clock input of the flip-flop FF41 rises, so its output Q becomes H" level and is sent to the combination selection circuit 35 as a combination permission signal (FIG. 4(k)). ) At this time, since the flip 70 knob FF6+ is set, the flip 70 knob FF5+ is set via the AND circuit 63+.
t is set, and flip 70 block FF6+ and flip-flop FF41 are reset.

Further, the output of the AND circuit 63+ turns on the metric value calculation circuit 271 as the metric measurement completion signal A1.

As a result, the sufficiently stable weight value of the object to be weighed from the scale 181 is stored in the left storage chamber 17 in the weight memory 261! The weight value (-11011 in this case) is subtracted and stored in the weight memory 28 as the weight value of the right storage chamber 172.
+ is stored.

Moreover, at time t5, since FF6+ is reset, the output of the AND circuit 431 becomes "H" level again, and FF2+ is reset.
+ is set. Therefore, in the same way as the operation from time t1, the intermediate gate timer starts operating for T2 from time t5 (Fig. 4(e)), the object to be weighed is supplied to the left storage chamber 171, and the fall stability timer TM5z starts operating for T2 + T4. time 1
1 HII level (Figure 4 (h)). And t
12 hours after time s, feeder drive timer TM41 reaches T.
After 3 hours of operation, the feeder 131 to intermediate hopper 141
The object to be weighed is supplied to the

Further, at time t6, when T2 +Ta time has elapsed since time ts, the output of the fall stability timer TM5+ becomes ``LI+ level'', so the flip-flop FF1+ is set and a combination permission signal is output to the combination command selection circuit 35 (see Fig. 4). (
j)), the state is the same as at the time of to, and the same operation is repeated thereafter.

Similarly, for the other M hoppers 162 to 16n, the objects to be weighed stored in the storage chambers for which weighing and measurement have been completed are combined and selected by the combination selection circuit 35, and the objects to be weighed in the selected storage chambers are selected. The items are sequentially discharged and sent to the packaging machine 2 via the collecting chute 20 and the timing hopper 21.
2 will be gathered.

Other Embodiments of the Present Invention In the above embodiment, two storage chambers were provided in each of the hoppers 161 to 16n, but this is not limited to two, and two or more storage chambers may be provided. A storage chamber may be provided in the weighing hopper. Further, in the above embodiment, priority was given to supplying objects to be measured to the left-hand storage chamber of the two storage chambers over supply to the right-hand storage chamber, but this may be reversed and there is no necessity at all.

<Effects of the present invention> As is clear from the above description, in the combination weighing device of the present invention, among the plurality of storage chambers provided in the weighing hopper,
Even while the weighing and measurement of the objects to be weighed supplied to one of the storage chambers is being carried out, the objects to be weighed that have been stored in other storage chambers and whose weight and measurement have been completed are selected in combination. It is controlled so that it can be discharged.

For this reason, the union l! The accuracy of the combined weight is significantly improved without reducing the number of storage chambers available for selection.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of a combination weighing device according to the present invention, and FIG. 2 is a block diagram showing a measured value calculation circuit of the embodiment. FIG. 3 is a block diagram showing a supply/discharge control circuit according to another embodiment, and FIG. 4 is a diagram showing a time chart of FIG. 3. FIG. 5 is a schematic configuration diagram of a conventional combination weighing device. 131~13n--Feeder, 14t~14n...
...Intermediate hopper, 161-16n...Measuring hopper, 181-18n...Measure, 23...
...Control device, 241-24n...Measuring value calculation circuit, 261-26n...Weight storage device, 281
~28'n... Weight memory device, 35...
Combination selection circuit, 40+~40n... Supply/discharge control circuit, TM1s"TM1n...
Ejection gate timer, TM21 to TM2n...
・Ejection gate timer, M31~TM3n...
Intermediate gate timer, T M 4 t - T M 4 n
...Feeder drive timer, T M 5 s -
T M 5 n...Fall stability timer, T M
6! ~TM6n・・・・・・Emission stability timer, FFI
~FF6...Flip 70 Tsubu, 541~54
n...Square wave oscillator.

Claims (1)

[Scope of Claims] A feeder that supplies objects to be weighed, a plurality of feeders that receive objects to be weighed from the feeder, a plurality of weighing hoppers having a plurality of integrally connected storage chambers; a plurality of intermediate hoppers each receiving objects to be weighed from a plurality of feeders and supplying the objects to be weighed to the plurality of storage chambers; and weighing each of the objects to be weighed stored in the plurality of weighing hoppers. A weighing hopper in which a total value obtained by combining a plurality of weighing instruments and the weight of an object to be weighed based on weight signals from each of the plurality of weighing instruments is equal to or close to a target weight. In the combination weighing device, the combination weighing device includes: a control device for selecting a combination of items to be weighed and discharging and collecting the selected objects to be weighed; Contains the weight value of the object to be weighed stored in a storage chamber other than the storage chamber in which it was placed as a result of a combination calculation performed in parallel when the weight of the object to be weighed is being measured. A combination weighing device characterized in that, when a combination is selected, control is performed so that the selected object to be weighed in the storage chamber is discharged in priority to the weighing measurement operation.