JPS62231123A - Combined weighing equipment - Google Patents

Abstract

PURPOSE:To shorten a collective discharge time by switching continuous discharging operation to combinational discharging operation when the difference between the target weight of bodies to be weighed and the total weight of bodies to be weighed which are discharged continuously enters a range wherein bodies to be weighed are handled at a time by one-time combining operation. CONSTITUTION:When the value obtained by subtracting the total weight value of bodies to be measured which are discharged continuously from target weight reaches the weight value where bodies to be weighed are handled at a time by one-time combination selecting operation, the continuous discharging operation is stopped and a combination calculation part 38a starts combining operation. A combination selecting circuit 38 compares the weight of a combination with the stored value in a storage device, and a discrimination part 38b selects a combination which is closest or equal to the weight and sends out its discrimination signal corresponding to a selected weighing hopper to a discharge supply controller 40. Consequently, the bodies to be weighed in the combination-selected weighing hopper are discharged and a timing hopper 20 is opened, so that the bodies to be weighed which are as many as the target weight are put in a packaging machine 21 and packaged together.

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Application Field of the Invention The present invention relates to a weighing device that collects and discharges objects to be weighed stored in a plurality of combination hoppers.

<Prior art> (Fig. 3) In order to efficiently group objects to be weighed, such as confectionery, fruit, meat products, etc., which vary in weight individually, into a target amount, the conventional method shown in Fig. 3 is used. Combination weighing devices such as these are used.

In the figure, objects to be weighed stored in a plurality of combination hoppers 11 to 1n each capable of accommodating objects to be weighed of a predetermined weight are weighed by respective weighing devices 21 to 2n, and this weighing signal is sent to the control unit. Sent on 3rd.

In the control unit 3, each i! The optimum combination for the target weight is selected by combining the weight Wi values of the objects to be weighed according to the +fit signal, and the objects to be weighed in the selected combination hopper are discharged.

The objects to be weighed that have been selected in combination and discharged from the combination hopper are discharged all at once through the collection chute 4 and packed into bags by the packaging machine 5. During this time, the objects are also discharged into the empty combination hopper. A new hanging object to be cut is stored, and the next combination is selected.

In such a combination correction device, the target weight of the object to be weighed is very large, and the weight values obtained by each weighing device cannot be determined by a single combination calculation, and the target weight may not be obtained. .

For example, when using a combination weighing device with a target weight of 2Kg that allows accurate combination selection, when weighing objects with a target weight of 10Kq, conventionally the temporary target weight is set to 2Ka, and the combination discharge operation is set to 4. Then, subtract the highest cumulative weight of the iJF output weight of the item for each of these four discharge operations from the target weight of 10Kq, and use this subtraction result as the target weight of the combination and perform the fifth combined discharge operation. I was packing up 10 KCI of objects to be weighed all at once.

<Problems to be solved by the present invention> However, in the conventional combination weighing device as described above, the target weight is too large, and in order to combine the objects that cannot be combined in one combination, multiple weighing devices are required. There is a problem in that a combination selection operation has to be carried out, which increases the time required to collect and discharge the target amount of wave gauges.

The present invention was made in order to solve the above problem, and it is possible to perform combination weighing that shortens the processing time for collecting and discharging objects whose target weight is too large to be combined in one combination. The purpose is to provide equipment.

<Means for Solving the Problem> The present invention includes a plurality of combination hoppers each capable of accommodating objects to be weighed of a predetermined weight, and a plurality of 1ffi device, target type ffi 1m setting means for storing the weight value as a target weight value in order to obtain an object to be weighed with a desired weight value, and a target type ffi 1m setting means for storing the weight value as a target weight value in order to obtain the object to be weighed with a desired weight value; A combination forward weighing system comprising: a combination calculation means for performing a combination calculation of the weighing shifts corresponding to each combination hopper outputted from the combination calculation means; and a combination discharge control means for discharging the object to be weighed in the combination hopper selected by the combination calculation means. In the device,
In order to achieve the above object, there is provided a reference weight value setting means for setting a predetermined weight value of the object to be weighed, which can be 1q in one combination calculation by the combination calculation means, as a reference amount H value; continuous discharge control means for continuously repeating the operation of storing or discharging the objects to be weighed into the combination hoppers while cumulatively calculating the weight value of the objects to be weighed stored in the plurality of combination hoppers, which are counted by a device; The target weight value and the T! The total number of objects to be measured obtained as a result of A product operation 4
a comparison means for stopping the discharging operation by the continuous discharging control means when the difference from the a'Jffi value becomes equal to or less than the reference weight value; a combination calculation start means for outputting a signal for the combination calculation means to combine the objects to be weighed housed in the container, and the combination calculation start means outputs a signal for combining the objects to be weighed housed in the container by the combination calculation means; The number of objects to be weighed that are selectively discharged by the combined discharge control means is 1!7.

One Embodiment of the Present Invention> (FIGS. 1 and 2) An embodiment of the present invention will be described below based on the drawings.

FIG. 1 is a schematic configuration diagram showing the entirety of one embodiment.

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

Weighing hoppers 16+ to 16n are arranged below the intermediate hoppers 141 to 14n, respectively.
The object to be weighed supplied to 4n is discharged from discharge gates 15+ to 15.
When n is opened, they fall and are accommodated in the weighing hoppers 161 to 16n, respectively.

Each of the weighing hoppers 16+ to 16n has a weighing device 171.
~17n is installed, and this measuring device 171~17n
is the Sl f accommodated in the weighing hoppers 161 to 16n.
Weigh each fi object and output the cutting signal.

A collecting chute 19 is installed below the il ffi hopper, and the objects to be weighed stored in the weighing hoppers 16+ to 16n are transferred to the discharge gates 1 of the weighing hoppers 16+ to 160.
81-18n'h (When opened, it falls into one collection chute.

A packaging chute 21 is installed below one of the collecting chutes, and a timing hopper 20 that opens at a predetermined timing is provided at the bottom of one of the collecting chutes.

On the other hand, the measurement signals from the measuring instruments 171 to 17n are sent to the measurement value storage units 221 to 22n of the control section, respectively.

H4ffi +f [Stores 221 to 22n have a total of ff1
Upon receiving the weighing signals from the weighing hoppers 317+ to 17n, the weight values of the objects to be weighed accommodated in the respective weighing hoppers 161 to 16n are detected and stored.

Total ■) Each type 5i stored in the direct memory devices 221 to 22n
la is sent to the continuous emission control device 23 and the combination U° selection circuit 38.

The continuous discharge control device 23 sequentially and continuously discharges the objects to be weighed stored in the total hoppers 161 to 16n, and sequentially subtracts the discharged weight from the target weight, until the result of this subtraction becomes less than or equal to a predetermined value. In order to stop the continuous discharge and start the combination selection operation by the combination selection circuit 38, the combination selection circuit 38 is configured as shown in FIG.

In FIG. 2, 241 to 24n represent each weighing hopper 16.
8 total ffi (+f
Status signals from the I-1 units 22t to 22n (i.e., when the weighing hopper contains an object to be weighed, the II H11
When the weighing hopper is empty, it is an AND circuit that takes a logical OR with discharge signals 01 to an from the decoder 35, which will be described later.
6 is turned on, and each of the memory 1s of the it ffi value storage units 221 to 22n is reset to 0'' as rehit signals b1 to bn.

251-25o are it ffi value storage devices 221-22
The weight value stored in n is subtracted from the value stored in a storage device 28, which will be described later, and the result of this subtraction is applied to switches 261 to 26n.
This is a subtracter that stores the subtractor in the memory 28 via the subtracter.

Reference numeral 27 indicates a target weight setter in which the target type 11 shift of the object to be weighed is set, and 28 indicates a target vehicle tJi setter 2 which is input via two switches that are turned on in response to the continuous discharge start signal C.
This is a memory device that stores the set value of 7, outputs it to each of the mouth reducers 251 to 25n, and stores the subtraction results.

3o is a base t! that approximately corresponds to the weight value of the objects to be weighed that are collected in one combination operation. The reference value setter 31 in which the ¥mff1 value is set compares the stored value in the storage device 28 with the reference value of the reference value setter 30, and when the stored value is larger than the reference value, I L l This is a comparator that outputs H + Rubel, which is less than or equal to (on the contrary, the stored value is the reference).

32 is the moment O when the output of the comparator 31 is at "H" level.
This is a switch that outputs the stored value of the memory device 28 to the determination section 38a of the combination selection circuit 38.

33 is an oscillator that outputs pulses of a predetermined frequency; 34 is a JJ counter that counts pulses from the oscillator 34 and outputs the counted number as a BCD code; 35 is a BCD code output from the counter 34; This is a decoder that converts into N-ary numbers and sequentially outputs N-ary converted outputs a1 to an to AND circuits 241 to 24n when the enable signal is at the "1" level.

36 outputs an output Q every time the continuous first appearance start signal C is input.
is a flip-flop which is set to the ``H'' level and reset by the ``to 1'' level output from the comparator 31. The output Q of this flip-flop 36 is sent to the decoder 35 as an enable signal, and also resets the counter 34 as a reset signal.

Note that the comparison output of the comparator 31 is output to the combination calculation section 38a of the combination selection circuit 38 as the start signal d of the combination calculation, and the output of each AND circuit 241 to 24n is output to the respective S1m hoppers 161 to 24n. 16n is sent to the discharge supply control device 40, which will be described later.

38 is a combination selection circuit which, upon receiving the combination calculation start signal d from the comparator 31, selects the measurement value storage 22r.
A combination calculation section 38a that calculates combination weights for all different combinations based on the measured values stored in ~22n and outputs the calculation results, and a combination weight ffi ljl that is sequentially input from the combination U calculation section 38a. is compared with the stored value from the memory device 28 inputted via the switch 32, and selects the combination that is equal or the closest, and outputs a determination signal corresponding to the selected combination U. 38
It is composed of b.

4o receives the discrimination signal output from the discrimination section 38b of the combination selection circuit 38 and the discharge signal from the AND circuits 241 to 24n, opens the discharge gate of the weighing hopper corresponding to these signals, and discharges the hopper to empty it. Open the discharge gate of the intermediate hopper corresponding to the weighing hopper that has become
Drive the feeder corresponding to the empty intermediate hopper to feed the
This is a discharge and supply control device that controls the discharge and supply of ff ffi substances.

<Operation of the above-mentioned embodiment> Next, in the combination weighing device of the above-mentioned embodiment, the operation of supplying and discharging objects to be weighed whose target weights are so large that they cannot be collected in one combined discharge will be described.

Assuming that no object to be weighed is stored in all intermediate hoppers 141 to 14n and weighing hoppers 161 to 16n in advance, each feeder 13r to 13n is driven by the discharge supply control device 40, and the feeder 11 from each feeder 131 to 13n via the circular feeder 12.
The m objects to be counted supplied to the intermediate hoppers 141 to 141 are respectively
14n.

The objects to be weighed supplied to the intermediate hoppers 141 to 14n are stored in the weighing hoppers 161 to 16n with respective discharge gates 151 to 15n opened.

The objects to be weighed stored in the weighing hoppers 161 to 16n are each ! ! It is weighed by the Jffi devices 171 to 17n, and this weighing signal is sent to the weighing value storage devices 22r to 22n, and the weights of the wave weights ffi hli W1 to Wn accommodated in each weighing hopper 161 to 16n are stored. Ru.

At this point, when the continuous discharge start signal C is input to the switch 29 and the flip-flop 36, the target weight setting device 2
The target weight W a of the object to be weighed set to 7 is stored in memory 2.
8 41! At the same time, the discharge signal al-an from the decoder 35 is sequentially output to the AND circuits 74+ to 74n.

Therefore, the value W1 stored in the measured value storage device 22+ is subtracted by the subtractor 251 from the value Wa stored in the storage device 28.
The subtraction result Wa W+ is stored and set in the storage device 28 via the switch 26+, and then the stored value W2 of the measured value storage device 222 is subtracted from this stored value Wa-wt, and this subtraction result Wa-Wt-W2 is stored in the memory 28 via the switch 262.

Thereafter, in the same manner, the weighted values of the measured value storage units 221 to 22n are sequentially subtracted from the target type ffi W a, but each subtraction is performed for each total! ! i value record! ! The stored values of the hoppers 221 to 22n are reset to 110 TT, and the reset signals b1 to bn are sent to the discharge supply control 11 device 40, and the discharge gates 18 of the hoppers 16+ to 16n are
1 to 18n are opened one after another, and the objects to be weighed are continuously discharged and collected in the collecting chute 19.

The fft ffi hopper is empty after being sequentially discharged.
The intermediate hoppers 141 to 1 are controlled by the discharge supply control device 4o.
4n discharge gates 151 to 15n are opened, and the next objects to be weighed are sequentially accommodated, and the empty intermediate hopper is supplied with the objects to be weighed from each feeder.

During this continuous discharge, the value stored in the memory 28 is changed to the value stored in the comparator 31.
, the value stored in the storage device 28 decreases each time the discharge is performed, and the stored value becomes smaller than or equal to the reference value Wb (i.e., the target weight The value obtained by subtracting the total weight of continuously discharged objects to be weighed from Wa is the weight M that can be put together in one combination selection operation (when it is straight), and the comparator 31 calculates "1".
''° level is output, and the flip-flop 36 is reset to 1~.

Therefore, the outputs a1 to an of the decoder 35 are stopped, and the continuous ejection operation is stopped.

Also, at this time, the output of the comparator 31 turns the switch 32 OFF.
N, the stored value of the memory device 28 is sent to the determination section 38b of the combination selection circuit 38, and the combination calculation section 38
Initiate the combination disease to a.

In the combination 11 constant circuit 38, the combination weight is calculated in the combination calculation unit 38a for all different combinations based on the weight value of the object to be weighed stored in the weighing hopper at this time, and this combination weight is stored. By comparing the values stored in the container 28, the combination U whose sides are close or equal is selected by the determination unit 38b, and a determination signal corresponding to the selected Hf same hopper is sent to the discharge supply control device/IO.

As a result, the discharge and supply control device 40 that has received the discrimination signal discharges the objects to be weighed in the weighing hoppers selected in combination, and the timing hopper 20 is closed, whereby the objects to be weighed for the target weight are packed. The products are stored in the machine 21 and packaged together.

Furthermore, when the timing hopper 20 closes, the continuous discharge start signal C is input, and the target weight Wa is stored in the memory 28 by the target one-finger setting device 27 in the same manner as described above.

In addition, the decoder 35 sends discharge signals a1 to an to each AND circuit 241 to 24n, but the previous combination t! The gliffi hopper that has been selected and has not yet accommodated an object to be weighed, or whose lff1 value has not yet been stored in the total 1111fl memory (i.e., a weighing hopper whose status signal from the weighed value memory is at OI+ level) ) Same as above except for 3! When the i consecutive discharge operation is performed and the value obtained by subtracting the combined weight of the continuously discharged objects to be weighed from the target weight Wa becomes less than the reference value VV+, the combined discharge operation is performed once in the same manner as above. ,the goal! ■The amount of objects to be weighed is collected.

Thereafter, the operation of discharging and supplying the objects to be weighed is repeated in the same manner, and the target mold amount of m objects to be cut is packaged.

Note that the above explanation has been made regarding the case where the objects to be weighed are so large that the target weight cannot be combined in one combination, but in the above device, the output of the comparator 31 is always
If it is fixed to a lever, a combination discharge operation can be performed each time for objects to be weighed with a small target weight.

Other Embodiments of the Present Invention In the above embodiment, the Taguchi value of one work piece that is continuously discharged is sequentially subtracted from the target weight of the work piece.
This is done by sequentially adding the mm values of the objects to be weighed that are continuously discharged, and when this additive value exceeds a predetermined weight value, the continuous discharge operation is stopped and a combined discharge operation is performed. In addition, in the above embodiment, the objects to be weighed are actually continuously discharged, but the objects to be weighed are not discharged, but instead are added sequentially, but subtracted, and after a series of operations until combination, the objects are sequentially discharged from the hopper. You can open it. In short, various modifications and applications are possible without departing from the gist of the present invention.

<Effects of the Present Invention> As described above, the combination hopper of the present invention continuously discharges the objects to be weighed housed in the combination hopper, and the number 4 of the objects to be weighed! j! When the difference between the weight and the total size of the continuously discharged objects δ reaches a range that can be combined in one combination operation, the continuous discharge operation is switched to the combined U discharge operation.

the goal! ! tffi is large, and the object is so large that it cannot be assembled in one combination using conventional equipment.
Only one combination selection operation is required, and the time required for collecting and discharging objects of the target type group can be significantly shortened.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the overall configuration of an embodiment of the present invention, FIG. 2 is a block diagram showing the main parts of FIG. 1, and FIG. 3 is a schematic diagram showing a conventional combination IT FFI device. It is. 131-13n...Feeder, 141-14n
・・・・・・Intermediate hopper, 161~16n・・・・・・
Weighing hopper, 171-17 n--Ht m device, 22
t~22n --Measurement value storage, 23...
Continuous discharge control device, 251~25n...Subtractor, 27...Target weight! ! 1 setting device, 28...
...Memory device, 30...Reference rf1 setting device, 31
... Comparator, 33 ... Oscillator, 34.
...Counter, 35 ...Decoder, 38
. . . Combination selection circuit, 40 . . . Emission supply control device. Figure 3 “G5

Claims (1)

[Scope of Claims] A plurality of combination hoppers each capable of accommodating objects to be weighed of a predetermined weight, a plurality of scales for measuring the weight of objects to be weighed in the combination hoppers, and a plurality of weighing devices each having a desired weight value. a target weight value setting means for storing the weight value as a target weight value in order to obtain a weighed object; and a weighing device corresponding to each combination hopper outputted from each of the scales so as to obtain the target weight value or a value close to the target weight value. A combination weighing device comprising combination calculation means for calculating a combination of values, and combination discharge control means for discharging objects to be weighed in a combination hopper selected by the combination calculation means, wherein one combination by the combination calculation means is provided. a reference weight value predetermining means for setting a set weight value of the object to be weighed that can be obtained by calculation as a reference weight value; and a weight of the object to be weighed stored in the plurality of combination hoppers and weighed by the scale. continuous discharge control means for continuously repeating the operation of storing or discharging the objects to be weighed into a combination hopper while calculating cumulative values; and the target weight value and the cumulative weight value of the objects to be weighed obtained as a result of the cumulative calculation. comparing means for stopping the discharging operation by the continuous discharging means when the difference between the weight and the total weight becomes equal to or less than the reference weight value; a combination calculation start means for outputting a signal for the combination calculation means to perform a combination calculation on the weighed value of the object to be weighed, the combination calculation means for combining the object to be weighed continuously discharged by the continuous discharge control means and the combination discharge control means. A combination weighing device characterized in that the objects to be weighed selectively discharged by the above are combined to form an object to be weighed of a target weight.