JPS62255826A - Combined weighing device - Google Patents

Abstract

PURPOSE:To prevent the decrease of the number of storing chambers which can be utilized for selecting a combination, by constituting the titled device so that an object to be weighed whose weighing measurement is completed can be discharged, even while the weighing measurement of an object to be weighed which is stored in either one of storing chamber is being executed. CONSTITUTION:In weighing hoppers 16-1-16-n, each one weighing instrument 19-1-19-n is respectively installed, and the weight of stored objects of both storing chambers of two storing chambers 17, 18 is also detected by one weighing instrument. Weighing value signals from the weighing instrument 19-1-19-n are sent to weighing value arithmetic circuits 24-1-24-n. The circuits 24-1-24-n detect and store the weight value of an object to be weighed stored in each storing chamber 17-1-17-n, 18-1-18-n. A combination selecting circuit 35 calculates all different combinations, based on the weight value of the object to be weighed of each storing chamber, discriminates the combination of the weighing hopper in which the difference to the set weight becomes the smallest, and outputs a combination selecting signal to discharge control circuits 40-1-40-n. The circuits 40-1-40-n receive this signal and open a designated gate so that the object to be weighed can be thrown into an empty pool hopper.

Description

[Detailed Description of the Invention] Industrial Application Field of the Present Invention The present invention sets the weight of objects to be weighed stored in a plurality of weighing hoppers from a plurality of pool hoppers or the number of grams based thereon in combination. The present invention relates to a combination weighing device that discharges objects by weight or number of items at once, and particularly to a semi-automatic combination weighing device that manually supplies objects to be weighed to a pool hopper.

<Prior art> (Fig. 6) A combination weighing device is used to efficiently gather objects to be weighed, such as confectionery, fruits, vegetables, or meat, which vary in weight individually, by a set weight or a set number of items. However, for large and heavy objects to be weighed (e.g. cabbages, broilers, etc.), it is necessary to feed the objects manually to prevent damage to the objects due to falling during conveyance, feeding, and discharge operations. Semi-automatic combination weighing has been used in the past.

In this type of semi-automatic combination weighing device 2, the objects to be weighed can be efficiently manually fed, and the objects to be weighed can be set using a small number of ffi devices. A weighing hopper having multiple storage chambers is installed for one pool hopper, and the weighing device provided for each weighing hopper calculates the weight of each object stored in the palm of the hand. There is one that detects t11.

FIG. 6 shows an example of such a semi-automatic combination weighing device.

In the figure, 1-1 to 1-n are pool hoppers, and the objects to be weighed that are manually put into each pool hopper 1-1 to 1-n are discharged through discharge gates 2-+ to 2-n on one side. They are opened and accommodated in one-side storage chambers 5-+ to 5-n of the weighing hoppers 4-1 to 4-n, respectively. Each storage room 5-1 to 5-n
The objects to be weighed stored in the weighing hoppers 4-1 to 4-n
The measurement is carried out by the measuring devices 7-1 to 7-n provided in each case, and a total of five signals are sent to the control section 8.

In the 1i1112I1 part 8, the weighing value after the vibration of the weighing signal due to the shock during storage of the object to be weighed is stabilized is the approximate value of the S1 object stored in each of the storage chambers 5-1 to 5-n. Each is memorized.

The next object to be weighed is manually loaded into the empty pool hoppers 1-+ to 1-n, and the discharge gates 3-1 to 3-n on the other side are loaded with the next object to be weighed.
n is opened and accommodated in the use side storage chambers 6-, + to 6-n of the weighing hoppers 4-1 to 4-n, respectively.

The control unit 8 subtracts the weight values of the objects to be weighed, which have already been stored in the storage chambers 5-+ to 5→, from the weight values after the imaging of the weighing signals at the time of storage has stabilized. Then, each subtraction result is stored as the weight value of the object to be weighed stored in the storage chambers 6-1 to 6-n.

Furthermore, a new object to be weighed is placed in the empty pool hopper 4.
-1 to 4-n and then input a combination signal by operating a foot switch or the like, the control unit 8 will:
A rough adjustment calculation is performed based on the weight values of the objects to be weighed stored in each of the storage chambers 5-1 to 5-n and 6-[ to 6-n.

As a result of the combination calculation, the optimal combination for the target weight is selected, the discharge gate of the storage chamber storing the selected objects to be weighed is opened, and each selected object to be weighed is placed on the collecting conveyor 11. be discharged.

The collecting conveyor 11 conveys the objects to be weighed discharged from each weighing hopper 4-1 to 4-n to a packaging machine (not shown) or the like.
The target amount of objects to be measured is collected.

Meanwhile, during this discharge, the object to be weighed is discharged from the pool hopper corresponding to the storage chamber of the empty weighing hopper after the combination is selected, and the next object to be weighed is manually loaded into this empty pool hopper. When the combination signal is inputted again, the combination selection operation is performed in the same manner as described above. Thereafter, the loading and unloading operations for the objects to be weighed are repeated in the same manner.

In addition, in the figure, 9-+ to 9-n and 10-+ to 10-n are discharge gates of weighing hoppers 4-+ to 4-n, and discharge gates 2-1 of pool hoppers 1-1 to 1-n. ~2-n, 3-1
-3-n, and their opening/closing operations are controlled by the control unit 8.

Problems to be Solved by the Present Invention> However, in the semi-automatic 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 the weighing and measurement of the object is carried out. While the weighing is being carried out, in order not to disturb the weighing, the control section 8 is configured not to use the wave gauges stored in other storage chambers of the same weighing hopper for combination selection.

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

OBJECT OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and even when objects to be weighed are placed in one of the storage chambers of the weighing hopper and the combination is selected during weighing and measurement, the It is an object of the present invention to provide a combination weighing device that does not deteriorate accuracy.

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

FIG. 1 is a schematic block diagram showing the rock structure of an embodiment of the present invention, and FIG. 2 is a block diagram showing the control section thereof.

In the figure, 12-1 to 12-n are shutters for preventing the objects to be weighed from being erroneously thrown into the N pool hoppers 13-1 to 13-n arranged below, respectively. It is controlled to open when the objects to be weighed in -1 to 13-n are discharged and become empty.

Pool hopper 13-! ~13-n manually accommodate objects to be weighed.

Below the pool hoppers 13-1 to 13-n, there are two storage chambers 17-1 to 17-n118-1 to 18-n, respectively.
Weighing hoppers 16-1 to 16-n are installed.

Therefore, the objects to be weighed stored in the pool hoppers 13-1 to 13-n are discharged to the discharge gates 14-+ to 14-n.

When 15-1 to 15-n are opened, each weighing hopper 16
-+~16-n storage room 17-1~17-n118-+
~18-n and stored.

One weighing device 19-1 to 19-n is installed in each of the weighing hoppers 16-1 to 16-n, and the weight of the contents in either of the two storage chambers is equal to one. being detected by a weighing instrument.

A collection conveyor 22 is installed below the weighing hoppers 16-1 to 16-0. Each weighing hopper 16-1 to 16
− The objects to be weighed stored in 〇 are each placed at the discharge gate 20
When -1 to 20-n and 21-1 to 21-n are opened, they fall onto the collection conveyor 22.

A packaging machine 23 is installed below the collection conveyor 22 on the discharge side.

The collecting conveyor 22 operates every time an object to be weighed is discharged from the weighing hopper, and conveys the discharged object to be weighed to the packaging machine 23.

On the other hand, the measured value signals from the measuring instruments 19-1 to 19-n are transmitted to the measured value calculation circuits 24-1 to 24 as shown in FIG.
- sent to n.

The weighing value calculation circuits 24-1 to 24-n receive the weighing value signal and calculate the storage chambers 17- of the weighing hoppers 16-1 to 16-n.
In order to detect the weight values of the objects to be weighed stored in 1 to 17-n and 18-+ to 18-n with one measuring device, and to store the respective weight values, as shown in FIG. It is configured.

That is, the measured value from the measuring device 19-1 is sent to the subtractor 25-r.
The stored value of the weight storage device 26-1, which stores the weight value of the object to be weighed in the storage chamber 17-1 on one side (for example, the left side) of the weighing hopper 16-1, is subtracted.

This subtraction result is sent to the weight memory 28 as the weight value of the object to be weighed in the other (right side) storage chamber 18-1 via a switch 27-1 that is turned ON by a completion signal A-1 to be described later when the weighing measurement is completed. -1 is stored.

Similarly, the weight value input to the subtracter 29-1 is input to the weight memory 28-! in the subtracter 29-1. The stored value of is subtracted, and the result of this subtraction is converted into a switch 30-!, which is turned on by a completion signal B-r, which will be described later. On the other hand (left side)
The 1 m value of the object to be weighed in the storage chamber 17-1 is stored in the weight memory 26-1.

Note that when the object to be weighed stored in either storage chamber is discharged, the switch 31-1 or switch 32- is synchronously set in the weight storage device corresponding to the discharged storage chamber.
1 is stored as an “O” gram.

Further, the switch 31-1 is a switch that opens and closes in response to a discharge signal C-1, which will be described later.
1 is a switch that opens and closes in response to the discharge signal D-+.

The combination selection circuit 35 selects each of the storage chambers 17-1 to 17-n, each time a combination signal is input by operating a foot switch or the like.
A combination calculation unit 35a that calculates all different combination weights based on the weight values of the objects to be weighed from 18-+ to 18-n.
Then, the weight setting section 35b that stores and sets the set weights compares the combined weight output of the combination calculation section 35a and the set weight output of the weight setting section 35b, and selects the combination of weighing hoppers that has the smallest difference from the set weight. and a discriminator 35c that discriminates and outputs a combination selection signal.

The discharge control circuits 40-1 to 40-n receive the combination sorting signal and control the corresponding weighing hoppers 16-1 to 16.
-n discharge gates 20-1 to 20-n, 21-1 to 21
- Open the designated gate of n to discharge the object to be weighed, open the discharge gate of the pool hopper to the storage chamber of this discharged weighing hopper, and then discharge the object to be weighed and empty it. The new wave meter makes it possible to load items by using a shutter that corresponds to the pool hopper.

In order to perform these gate opening and closing operations, the discharge control circuit 40-1 is configured as shown in FIG. 4, for example.

In the figure, the combination selection signal from the combination selection circuit 35 is input to the discharge gate timers TM1-+ and TM2-1 corresponding to the left and right storage chambers 17-1, 18-1, respectively. Ejection gate timer TMI-+, TM2-! consists of a multivibrator, etc., and when a pulse is input,
A certain time T+ from the rise of the input pulse (i.e., the time it takes for the object to be weighed to be completely ejected from the storage chamber)
outputs HII level.

Discharge gate timer TM 1-! The output of is the discharge signal D
−+ and the switch 32 of the weighing value calculation circuit 24−
-1 opens and closes, and discharge gate 2○-1 on the storage room 17-1 side
Open and close. Similarly, the discharge gate timer T M 2
The output of -+ is used as a discharge signal C-t to open and open the switch 31-1 of the weighing value calculation circuit 24-1, and the output of the storage 918-1
The side discharge gate 21-1 is opened and closed.

Ejection gate timer TMI corresponding to left storage chamber 17-1
The combination selection signal input to -+ is input to the clock input of flip-flop FF 1-1.

The D input of the flip-flop F F 1-+ is fixed at the "L'° level, its output Q is sent as a combination permission signal to the combination selection circuit 35 (not shown), and its inverted output O is an AND It is input to one input terminal of the circuit 41-1. The output of the discharge gate timer TM1-1 is inverted and input to the other input terminal of the AND circuit 41-1 via an inverter 42-1.

The output of the AND circuit 41-1 is the three-person AND circuit 43.
-1 is input to the first input terminal. AND circuit 4
The output of 3-1 is input to the set terminal of flip-flop FF2-1, and is also input to one input terminal of AND circuit 44-■.

Further, the inverted output ○ of the flip-flop F F 2-1 is input to the second input terminal of the AND circuit 43-1, and the output Q is input to one input terminal of the AND circuit 45-1. It is also input to one input terminal of the AND circuit 46-1.

The output of the AND circuit 46-1 is the flip-flop F
1-1 set terminal and flip-flop FF2-1
is input to the reset terminal of the OR circuit 47-1.
is input to one of the input terminals. Further, the output of this AND circuit 46-1 is taken as a measurement completion signal B-1, which opens and closes the switch 30-1 of the measurement value calculation circuit 24-1.

On the other hand, the output of the OR circuit 44-1 is the AND circuit 48-+
The signal is input to the shutter timer T M 3-1 via. The shutter timer T M 3-+ outputs the II H level for a certain period of time T2 from the rising edge of the input pulse. The output of the shutter timer TM 3-1 is input to the set terminal of the flip-flop FF 3-1, and is also input to the gate timer TM 4 via the inverter 4-1.
-1 is input.

The gate timer TM 4-1 outputs the "H" level for a certain period of time T3 (that is, the time required for the weight to be weighed to be completely discharged from the pool hopper) from the rise of the input pulse.

The output of the gate timer TM4-1 is output from the AND circuit 45.
-1 to the other input terminal of the AND circuit 45-1.
The output becomes a signal output for opening and closing the discharge gate 14-1 of the pool hopper 13-1 corresponding to the left storage chamber 17-1 of the weighing hopper 16-1.

Further, the output of the gate timer T M 4-r is inverted by the impark 50-1, and the output of the flip-flop FF 3-1 whose D input is fixed at the 11111 level.
It is input to the clock terminal.

Furthermore, this inverter 50=1 output converts the D input to
' It is input to the clock terminal of the flip-flop FF4-1 fixed to the clock. A combination signal generated by operating a foot switch or the like is input to the set terminal of the flip-flop FF 4-1, and its output Q is input to an AND circuit 48-1.

Furthermore, this gate timer T M 4-. The output of 1 is
It is input to one input terminal of the AND circuit 51-1, and the rectangular wave output of the rectangular wave oscillator 52-1 hSI is applied to the other input terminal of the AND circuit 51-1.

The output of the AND circuit 51-1 is the supply stability timer TM5-
1, and the supply stability timer TMS-1 is input for a certain period of time T4 from the rise of the input pulse (i.e., the time from when the object to be weighed is dropped into the weighing hopper until the weight value becomes stable). This supply stability timer TM5-1 is also a re-trigger type that maintains the output as a patrol signal for approximately 14 hours from that time when the next pulse is input during the timer operation. It is a timer.

The output of the square wave oscillator 52-1 is also input to one input terminal of the AND circuit 53-1.
The other input terminal of 3-1 has a discharge gate timer TMI.
-1, T M 2-t The output of an OR circuit 54-1 having the output as an input is input.

The output of the AND circuit 53-1 is the emission stability timer TM6-
1, and the discharge stability timer TM6-1 is inputted to +t H++ for a certain period of time Ts from the rise of the input pulse (i.e., the time from when the object to be weighed is discharged from the weighing hopper to when the scale is stabilized). Output the level.

Similar to the supply stability timer TM 5-+, this discharge stability timer TM 6-r, when the next pulse is input during the timer operation, will continue for approximately 15 hours from that time.
This is a retrigger type timer that holds the output at H11 level.

Supply stability timer TM5-1 and discharge stability timer TM6
The output of -1 is input to both input terminals of the NOR circuit 55-1, and the output of the NOR circuit 55-1 is input to the clock terminal of the flip-flop FF5-+.

D input of flip 70 knob FF 5-1 is 11H
It is fixed at the II level, and its output Q is input to the other input terminal of the AND circuit 46-1.

Furthermore, the output of the OR circuit 47-1 is input to the reset terminal of the flip-flop FF 5-1.

On the other hand, the combination selection signal input to the discharge gate timer TM 2-+ corresponding to the right side storage chamber 18-1 inputs the D input to "L II level" as well as the left side. is input to the clock terminal of

And the output Q of the flip 70 tube FF 6-1 is:
It is sent to the combination selection circuit 35 as a combination permission signal (
(not shown), its inverted output O is input to one input terminal of the AND circuit 56-1, and the output of the discharge gate timer TM2-1 is input to the other input terminal of the inverter 57-1.
1 is invertedly inputted.

The output of the AND circuit 56-1 is the three-person AND circuit 58.
-1 is input to the first input terminal, and the output of the AND circuit 41-1 is inverted and input to the second input terminal via the inverter 59-1. Also, the third
The input terminal of the flip-flop FF 2-+
The inverted output of 0 is input.

The output of the AND circuit 58-1 is the flip-flop F
It is input to the set terminal of 7-1 and the other input terminal of the OR circuit 44-1. Also,
The inverted output 0 of the flip-flop FF7-1 is input to the third input terminal of the AND circuit 43-1, and the output Q is input to one input terminal of each of the two AND circuits 60-1 and 61-1. has been entered.

The output of the gate timer T M 3-1 is input to the other input terminal of the AND circuit 60-1, and the output of the AND circuit 60-1 is input to the right storage chamber 18-1 of the metering hopper 16-1. This is a signal output for opening and closing the discharge gate 15-1 of the pool hopper 13-1 corresponding to this.

Further, the output Q of the flip-flop FF 5-1 is input to the other input terminal of one AND circuit 61-1, and the output of the AND circuit 61-1 is input to the other input terminal of the flip-flop FF 6-t. is input to the set terminal of the flip-flop FF7-1 and the reset terminal of the flip-flop FF7-1.
It is input to the other input terminal of the OR circuit 47-1.

Further, the output of the AND circuit 61-1 is used as the measurement completion signal A-+ to open the switch 27-1 of the measurement value calculation circuit 24-1.

Note that N sets of the above-mentioned measured value calculation circuit 24-1 and discharge control circuit 40-1 are provided in exactly the same manner for each measuring device 1-1 to 1-n.

<Operation of the above embodiment> (FIG. 5) Next, the operation of the above embodiment will be explained based on the above drawing and the time chart of FIG. 5.

In advance, each storage chamber 17-1 to 17 of all pool hoppers 13-1 to 13-n and weighing hoppers 16-1 to 16-n is
-n, 18-1 to 18-n accommodate the objects to be measured, and the mm storage units 26-+ to 26-n, 28-+ to It is assumed that each mff1 value is stored in 28-n.

In addition, flip-flops FF1-t to FF1-n and FF6-t to FF6-n of the emission control circuits 40-1 to 40-n are set, other flip-flops are in a reset state, and each timer is in an operating state. shall not exist.

Precept ■＞Importance of value calculation circuits 24-1 to 24-n ■Memorized values are
The combination signal is sent to the combination calculation section 35a of the combination selection circuit 35, and when the combination signal is inputted by operating a foot switch or the like, the combination U permission signal becomes the playback level in the combination calculation section 35a. The combined weight is calculated for all different combinations based on the weight values of the storage chambers.

The determining unit 35c determines the optimal combination weight for the setting type (■) set in the weight setting unit 35b, and as a result, a combination sorting signal corresponding to each storage chamber whose combination has been selected is sent to the discharge control circuit 40-1. ~40-n.

Here, for example, the storage chamber 17- of the weighing hopper 16-1! ,
When the objects to be weighed stored in 18-1 are selected for combination at the same time, as shown in the time chart of FIG. (Figure 5 (a), (b))
.

When the combination selection signal is input, the discharge gate timer TM
1-+ and T M 2-1 operate together, and the result shown in FIG. 5 (C
), whose output is t, as shown in (d).

The level becomes ``H'' for an hour T1. This output is sent to the discharge gates 20-1 and 21-1 of the weighing hopper 16-1 as discharge signals C-+ and D-t,
．． The objects to be weighed stored in 18-1 are dropped onto the collection conveyor 22. It ff that fell onto the collection conveyor 22
The item i is conveyed to the packaging machine 23 and packaged together with other items to be weighed that have been selected in combination and discharged. In addition, the discharge signals C-+ and D-+ connect the weighing value calculation circuit 24-+(7) switch 31-1.32-+ to ONL, T, and the cocoon weight storage unit 26-1.28-1. ○°′ is memorized.

Also, from time to, both discharge gate timers TM1'-t, T
Since the output of M2-+ is at the "11" level, the emission stability timer TM6-1 is activated and its output becomes T.
I +T5 hours 11 H″ level (Figure 5 (+))
.

In addition, due to the input of the combination selection signal, the outputs of the flip-flops FFI, +, and FF6-t all become the "L" level from the time of to (Fig. 5 (j>, (k)), and the inverted output port becomes the "HIT level". becomes.

At time t1, when T1 time has elapsed since time t0, the output of the discharge gate timer TM1-1 becomes the ``H'' level, so the output of the AND circuit 41-1 becomes the ``H'' level, and the AND circuit 43-1 becomes positive. The pulse of flip-flop F F
It is output to the set terminal 2-+ and the OR circuit 44-1.

On the other hand, the output of the AND circuit 56-1 similarly goes to the "H" level, but the output of the AND circuit 58-1 remains at the II LIT level due to the inverter 59-1.

The output Q of the flip-flop F F 2-+ set by the AND circuit 43-1 becomes H''' level and is input to the AND circuit 45-1.
The positive pulse from TM 3-1 is sent to the shutter timer TM 3-1 via an OR circuit 44-1 and an AND circuit 48-1.
Therefore, the output of the shutter timer TM3-1 becomes the T2 time If H11 level (Fig. 5(e)),
The output of the flip-flop FF3-1 serves as an opening bell, and the shutter 12-1 is opened.

Shutter timer TM 3-1 output is L IT at t2
When the gate timer TM 4-1 reaches the level, the gate timer TM 4-1 operates and outputs the level for the time T3 from time t2, so the output of the AND circuit 45-1 synchronizes with this and outputs the level II HI! for the time T3. The level is output (FIG. 5(f)), the left discharge gate 14-1 of the pool hopper 13-1 is opened, and the object to be weighed is transferred to the weighing hopper 16-! Left side storage room 17-1
and the metering measurement by the meter ffi 19-t is started. Note that during this discharge time, the output of the flip-flop FF 3-+ is at the H11 level, so the pool hopper 13-1 is closed by the shutter 12-1.

Furthermore, at time t2, the gate timer TM4-1 is set to 'l-
1" level, the fall stability timer T M 5-+ is activated and its output remains at the "H'° level for 73+74 hours (FIG. 5(h)).

Then, 13 hours later at t3, gate 9171M4-1
When the output changes to °“L11 level, flip 70
The output Q of the knob FF 3-1 becomes "L°" level,
The shutter 12-1 listens and the next object to be weighed can be manually loaded.

Also, at time t3, the output of the flip 70-tube FF4-1 changes to the "L" level and remains at the "L" level until the next combined signal is input.

At time t4, when T3 +Ta time has elapsed from time t2, the output of the fall stability timer TM5-1 changes to the "LIT" level, so the clock input of the flip-flop FF5-L rises and its output Q becomes "HII". The level is set. This output Q sets the flip-flop FF 1-+ via the AND circuit 46-1, and sets the flip-flop FF 2-r and the Noritsu flop FF
Reset 5-1.

Therefore, the output Q of the flip-flop F F 1-t
becomes "H" level (FIG. 5(j)) and is sent to the combination selection circuit 35 as a combination permission signal.

Further, at this time (time t4), the positive pulse of the AND circuit 46-1 is sent to the metric value calculation circuit 24-1 as the metric measurement completion signal B-+, and the switch 30-1 is turned on.

As a result, the sufficiently stable weight value of the object to be weighed from the totalizer 19-1 can be obtained from the stored value of the weight memory 28-1 (this In this case, "0'°) is subtracted and stored in the weight memory 26-1 as the weight value of the left storage chamber 17-1.

As described above, the measurement of the object to be weighed supplied to the left storage chamber 17-1 is completed, and this weight value is sent to the rough match selection circuit 35.

At time t4 when the weighing measurement of the left storage chamber 17-1 is completed, the inverted output Φ of the flip-flop FF1-s is
level, the output of the AND circuit 41-1 is also ゛L°
Becomes Rubel. This output is input to the AND circuit 58-1 via the inverter 59-1, so the AND circuit 58-
The output of 1 becomes the ri HII level, and the flip-flop FF7-1 is set.

Here, when the next 4 m object is loaded into the pool hopper 13-1 and a combination signal is input at time t5, the combination selection circuit 35 selects a combination as described above, and this combination selection signal is used for each discharge. Selected for control circuit.

At this time, if the object to be weighed stored in the left storage chamber 17-1 is not selected for the combination, the shutter timer TM3 −+, and the shutter timer T
M3-+ operates for T2 time, flip-flop FF3
-+ is set (FIG. 5(e)).

Therefore, the shutter timer 12-1 closes again and T2
Time 1? ! ] At time t6 later, gate timer TM4-+ is set to T.
After 3 hours of operation, the AND circuit 6o-1 becomes a patrol bell (FIG. 5(q)), the object to be weighed is stored in the right storage chamber 18-1 from the pool hopper 13-1, and weighing and measurement are started.

Furthermore, when the gate timer TM4-+ is activated, the fall stability timer TM5-+ is activated for T3+T4 from time t6 in the same manner as described above (Fig. 5 (h)), and at time t7, which is T3 time from time tS, the shutter 12-1 is activated. is asked, and the next object to be weighed is thrown into the pool hopper 13-1.

Here, the fall stability timer TIVI5-+ is 'l-1'.
When the next combination signal is input during the level (that is, while the measurement value of the measuring instrument is not stable) and one wave meter stored in the left storage chamber is selected for the combination, at 6:00 pm, the combination selection circuit 35, the selection signal is discharge gate timer TM1-+
and input to flip-flop FF1-1 (fifth
Figure (a)).

Therefore, the discharge gate timer TM1-+ is not activated for T1 hours (Fig. 5(C)), the object to be weighed in the left storage chamber 17-1 is discharged, and the discharge stability timer TM6-+ is activated from 18:00 to T1.
I +Ts time operation (Fig. 5 (i)), left storage v1
0'' is stored in the weight memory 26-1 corresponding to 7-+.

Therefore, the weighing measurement of the object to be weighed stored in the right storage chamber, which started at time t6, starts at time t.

It was completed at t9, which is Tl + T5 hours after the time, and the total f
A weighing completion signal Δ-1 is sent to the it value calculation circuit 24-1, and from the stable weighing value of one measuring instrument -1, the weight value of the right storage chamber 17-+ stored in the weight storage device 26-1 is calculated. In this case, "O") is subtracted, and the right storage room 18-1
is stored in the weight storage device 28-1 as a weight value.

Furthermore, since the flip-flop FF6-+ is set, a combination permission signal is output to the combination selection circuit 35 (
5(k)), the shutter timer TMS-1 is activated (FIG. 5(e)).

When the shutter timer T M 3-+ operates at time t9,
At time t+o, which is 12 hours after time t9, the gate timer TM4-+ is activated, and the output of the AND circuit 45-I becomes ``H'' level, and the output from the pool hopper 13-I.

The object to be weighed is stored in the left storage chamber 17-1, and weighing and measurement are started.

This weighing measurement is performed after the operating time of the fall stability timer TM5-+ (i.e., at t1, which is T3+T4 hours after the tio time).
1 o'clock), and as above, from this stable measurement value, store it on the right side! The weight value of the object to be weighed 18-+ is subtracted and stored in the ffX amount storage 26-1, and a combination permission signal is sent to the combination selection circuit 35 (FIG. 5(j)).

Also, during this time, the next object to be weighed is placed in the pool hopper 13-
1, and thereafter similar control is performed every time a combination signal is input.

Further, in the other discharge control circuits 40-2 to 40-n, the same control as described above is performed in synchronization with the combination signal, and the objects to be weighed selected in combination +i are sequentially collected and discharged.

In addition, in the above embodiment, the pool hoppers 13-1 to 13-
n discharge gates 14-1 to 14-n, 15-1 to 15
Since the shutters 12-1 to 12m1 are operated immediately before the opening/closing operation of -n, it is possible to prevent the object to be weighed from being erroneously thrown in during the opening/closing operation of the discharge gate.

Other Embodiments of the Present Invention In the above embodiment, two storage chambers were provided in each of the weighing hoppers 16-1 to 16-n, but this is not limited to two, and two storage chambers were provided. A plurality of the above storage chambers may be provided in the weighing hopper. Furthermore, in the above embodiment, priority was given to supplying the object to be weighed to the left storage chamber of the two storage chambers over the supply to the right storage chamber, but in this case, this may be reversed and there is no necessity. There isn't.

Furthermore, in the above embodiment, the weight of the object to be weighed ffi lfl
Previously, combinations were selected based on the following, but the present invention
The same applies to those in which the number of pieces is set to 10 from the weight of the object to be weighed, and the combination selection is made based on this number, or the selection of combinations is made based on the weight value and the number of pieces. Can be done.

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 of the objects to be weighed stored in one of the storage chambers is being carried out, the objects to be weighed that are 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.

Therefore, the accuracy of combinations is significantly improved without reducing the number of storage chambers that can be used for combination selection.

[Brief explanation of drawings]

FIG. 1 is a dimensional 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, and FIG.
It is a block diagram showing a metric value calculation circuit of one example. FIG. 4 is a block diagram showing the discharge control circuit of one embodiment, and FIG. 5 is a diagram showing a time chart of FIG. 4. 6th
The figure is a schematic configuration diagram of a conventional combination weighing device. 12-t~12-n-=shutter, 13-t~13-
n...Pool hopper, 161~16n...
...Weighing hopper, 19-1 to 19-n...Measuring instrument, 24-1 to 24-n...Measuring value calculation circuit,
26-1 to 26-n, 28-1 to 28-n...
Weight memory device, 35...Combination selection circuit, 40-
1~40-n --Emission control circuit, TMI-+~TM
1-n, TM 2-+ ~ TM 2-n・=- discharge gate timer, TM3-+ ~ TM 3-n... Shutter timer, TM 4-+ = TM 4-n ・
=-gate timer, TM5-+~TM5-n...
...Fall stability timer, TM6-+~TM6-n...
...Discharge stability timer, 52-1 to 52-n...
・Square wave generator.

Claims (1)

[Scope of Claims] The objects to be weighed that have been manually loaded into a plurality of pool hoppers are selectively accommodated in a plurality of storage chambers in a weighing hopper provided for each of the pool hoppers, and the objects to be weighed are stored in the weighing chambers. The objects are weighed and measured by the weighing instruments provided in each of the weighing hoppers, and based on the measured values of the objects to be weighed detected by the weighing, a combination is selected for a set weight or a set number of pieces, and the selection is made. In a combination weighing device, the combination weighing device includes a control unit that controls the discharge and collection of objects to be weighed that have been weighed. When attempting to weigh and measure, if a combination that includes an object to be weighed stored in a storage room other than the newly stored storage room is selected as a result of combination selection performed in parallel. . A combination weighing device, characterized in that control is performed so that the object to be weighed in the selected storage chamber is discharged in priority to the weighing measurement operation.