JPH0115807B2 - - Google Patents
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- Publication number
- JPH0115807B2 JPH0115807B2 JP54171894A JP17189479A JPH0115807B2 JP H0115807 B2 JPH0115807 B2 JP H0115807B2 JP 54171894 A JP54171894 A JP 54171894A JP 17189479 A JP17189479 A JP 17189479A JP H0115807 B2 JPH0115807 B2 JP H0115807B2
- Authority
- JP
- Japan
- Prior art keywords
- value
- combination
- weighing
- supply device
- tanks
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000005303 weighing Methods 0.000 claims description 56
- 238000001514 detection method Methods 0.000 claims description 15
- 230000005284 excitation Effects 0.000 description 13
- 239000006185 dispersion Substances 0.000 description 7
- 238000005259 measurement Methods 0.000 description 7
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Landscapes
- Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
Description
【発明の詳細な説明】
この発明は、複数の固形物をほぼ一定重量づつ
袋に詰める際に使用する組合せ秤に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a combination weigher used when packing a plurality of solid objects into bags at substantially constant weights.
一般に、組合せ秤には複数の計量槽、例えば８
台の計量槽で各々固形の被計量物品を計量し、１
台の計量槽だけの組合せから８台の計量槽の組合
せまでの255の組合せに基いてこれら計量信号を
順次組合せて和を算出し、その和が予め定めた計
量目標値に最も近い組合せを選択し、その組合せ
に係る計量槽から被計量物品を排出するものがあ
る。このような組合せ秤において、各計量槽にそ
れぞれ例えば100ｇ前後の重量に相当する複数の
被計量物品が取込まれており、計量目標値が500
ｇである場合、ほぼ500ｇとなる可能性のある組
合せは、８台の計量槽のうち５台を組合せる8C５
＝56通りしかない。また極端な場合、各計量槽の
取込量が250ｇ前後の場合、２台でほぼ500ｇとな
るので8C２＝28通りの組合せしかない。従つて、
このような少ない組合せの中から最適な組合せを
選んでも、目標値から大きくくずれる確率が高か
つた。これに対し8C４の場合は70通りの組合せが
得られる。 Generally, a combination weighing scale has a plurality of weighing vessels, e.g.
Weigh each solid item to be weighed in the weighing tank of the stand, and
Based on 255 combinations ranging from a combination of only one weighing tank to a combination of eight weighing tanks, these weighing signals are sequentially combined to calculate the sum, and the combination whose sum is closest to the predetermined target weighing value is selected. However, there is a device that discharges the article to be weighed from the weighing tank related to the combination. In such a combination scale, each weighing tank holds a plurality of objects to be weighed, each weighing approximately 100 g, and the target weighing value is 500 g.
g, the combination that can yield approximately 500g is the combination of 5 out of 8 weighing tanks 8 C 5
= There are only 56 ways. In an extreme case, if the amount taken into each measuring tank is around 250g, two units will take in approximately 500g, so there are only 8 C 2 = 28 combinations. Therefore,
Even if the optimal combination was selected from such a small number of combinations, there was a high probability that the value would deviate significantly from the target value. On the other hand, in the case of 8 C 4, 70 combinations are obtained.
この発明は、ｎ台の計量槽を適当な台数組合せ
る場合、ｎ台のうちｎが偶数の場合n/2台を、ｎ
が奇数の場合n/2±0.5台を組合せると最も多くの
組合せが得られ、従つてその組合せの中に目標値
に充分近い組合せが含まれ、それが最適組合せに
選ばれる確率が高くなることに注目して、組合せ
数が最大になるように制御して目標値に充分近い
組合せが得られる確率の高い組合せ秤を提供する
ことを目的とする。 In this invention, when n measuring tanks are combined in an appropriate number, if n is an even number, n/2 of the n measuring tanks are combined.
If is an odd number, combining n/2±0.5 units will yield the greatest number of combinations, and therefore the combinations will include combinations that are sufficiently close to the target value, increasing the probability that it will be selected as the optimal combination. By paying attention to this, it is an object of the present invention to provide a combination weigher with a high probability of obtaining a combination sufficiently close to a target value by controlling the number of combinations to be maximum.
以下、この発明を図示の１実施例に基いて説明
する。第１図において、２は円形振動フイーダ
で、その上方に設けた供給装置４より中央部に供
給された被計量物品を振動により外周方向へ分散
させるものである。この円形振動フイーダ２の外
周には所定間隔ごとに８個の出口が設けられてお
り、これら出口には各々投入ゲート６が設けら
れ、各投入ゲート６は出口を開閉制御する。 The present invention will be explained below based on one embodiment shown in the drawings. In FIG. 1, reference numeral 2 denotes a circular vibrating feeder, which disperses the articles to be weighed, which are fed to the center from a feeding device 4 provided above, toward the outer circumference by vibration. Eight outlets are provided at predetermined intervals on the outer periphery of the circular vibrating feeder 2, each of which is provided with an input gate 6, and each input gate 6 controls opening and closing of the outlet.
これら各投入ゲート６の下方には、これら投入
ゲート６に対応するように８個の中間ホツパー７
が設けられている。これら計量槽８は、投入ゲー
ト６が開かれたときに円形振動フイーダ２より複
数の被計量物品を受け入れる。これら中間ホツパ
７の下方にはこれらにそれぞれ対応するように８
個の計量槽８が設けられ、これは中間ホツパ７の
排出ゲート９が開かれたとき中間ホツパ７より被
計量物品を受け入れる。受け入れられた被計量物
品の総重量は、各計量槽８に設けたロードセル１
０によつて検出される。これら計量槽８は、排出
ゲート１２を有しており、これら排出ゲート１２
を介して計量槽８内の被計量物品は、計量槽８の
下方に設けた集合シユート１４内へ排出される。 Below each of these input gates 6, there are eight intermediate hoppers 7 corresponding to these input gates 6.
is provided. These weighing tanks 8 receive a plurality of articles to be weighed from the circular vibrating feeder 2 when the input gate 6 is opened. Below these intermediate hoppers 7, there are 8
A weighing tank 8 is provided which receives articles to be weighed from the intermediate hopper 7 when the discharge gate 9 of the intermediate hopper 7 is opened. The total weight of the accepted articles to be weighed is determined by the load cell 1 installed in each weighing tank 8.
Detected by 0. These measuring tanks 8 have discharge gates 12, and these discharge gates 12
The articles to be weighed in the weighing tank 8 are discharged into a collection chute 14 provided below the weighing tank 8.
第２図に示すように、ロードセル１０の出力１
６は組合せ制御部１８に供給され、予め定めた
255通りの組合せに基いて順に組合され、その組
合された計量信号の和が予め定めた計量目標値の
許容範囲内にある組合せがあるごとに、その組合
せを組合せ記憶部２０に記憶させる。すべての組
合せが実行された後、組合せ制御部１８は組合せ
記憶部２０に記憶された組合せのうち最も計量目
標値に近い組合せを選択し、組合せ記憶部２０か
らの選択された組合せに係る出力信号２２に基い
て、選択された計量槽８の排出ゲート１２が開か
れる。その後、中間ホツパ７の排出ゲート９が開
かれ、計量槽８に新たに被計量物品が供給される
と共に、後述する分散制御部４０によつて８台の
計量槽８の半数に相当する４台で目標値になるよ
うに供給量を増減させるように円形振動フイーダ
２の加振力が変化させられ供給能力は変化する。
次に投入ゲート６が開かれ、新たな供給能力で、
選択された計量槽８に対応する中間ホツパ７に新
たな被計量物品が投入される。 As shown in FIG. 2, the output 1 of the load cell 10
6 is supplied to the combination control section 18, and the predetermined
The 255 combinations are sequentially combined, and each time there is a combination in which the sum of the combined measurement signals is within the tolerance range of a predetermined measurement target value, that combination is stored in the combination storage section 20. After all the combinations are executed, the combination control unit 18 selects the combination that is closest to the measurement target value among the combinations stored in the combination storage unit 20, and outputs an output signal related to the selected combination from the combination storage unit 20. 22, the discharge gate 12 of the selected metering tank 8 is opened. After that, the discharge gate 9 of the intermediate hopper 7 is opened, and the weighing tank 8 is newly supplied with the article to be weighed, and at the same time, the distributed control unit 40 (described later) The excitation force of the circular vibrating feeder 2 is changed to increase or decrease the supply amount so as to reach the target value, and the supply capacity changes.
Next, input gate 6 is opened, and with the new supply capacity,
A new article to be weighed is placed into the intermediate hopper 7 corresponding to the selected weighing tank 8.
２４は選択計量槽検出で、組合せ記憶部２０か
らの出力信号に基いて選択された計量槽の台数を
検出する。この検出信号は、減算器２６において
設定器２８に設定された設定値４（８台の計量槽
８の半数）との差が算出され、この差信号は積算
器３０に供給される。積算器３０は、組合せ記憶
部２０の出力信号に同期して組合せ制御部１８が
発生する同期信号３２が発生するごとに、差信号
を積算する。 Reference numeral 24 denotes selected measuring tank detection, which detects the number of selected measuring tanks based on the output signal from the combination storage section 20. The difference between this detection signal and the set value 4 (half of the eight measuring tanks 8) set in the setter 28 is calculated in the subtracter 26, and this difference signal is supplied to the integrator 30. The integrator 30 integrates the difference signal every time the synchronization signal 32 generated by the combination control unit 18 in synchronization with the output signal of the combination storage unit 20 is generated.
積算器３０の出力３４は係数器３６によつてＫ
倍され、この係数器３６の出力は分散制御部４０
に供給される。この出力に基いて分散制御部４０
は円形振動フイーダ２の加振力を変化させて、選
択された計量槽８への新たな被計量物品の投入個
数すなわち、重量が変化させられる。４２は分散
能力選択スイツチで、計量目標値の設定変更をす
るため等に分散能力を大幅に変更する場合に使用
する。 The output 34 of the integrator 30 is converted to K by the coefficient multiplier 36.
The output of this coefficient multiplier 36 is multiplied by the dispersion control unit 40
supplied to Based on this output, the distributed control unit 40
By changing the excitation force of the circular vibrating feeder 2, the number of new articles to be weighed, that is, the weight, to be added to the selected weighing tank 8 is changed. Reference numeral 42 denotes a dispersion capacity selection switch, which is used when the dispersion capacity is to be significantly changed, such as in order to change the setting of the measurement target value.
この組合せ秤は次のように動作する。例えば各
計量槽８には計量目標値、例えば500ｇを４（８台
の計量槽８の半数）で割つた値よりも少ない重量
分だけ、例えば約20％位少なく被計量物品がそれ
ぞれ投入されているとする。すなわち、各計量槽
の被計量物品の重量の値はそれぞれバラツキはあ
るが、平均約100ｇ入つていることになる。この
状態で組合せ制御部１８が組合せを実行し、最も
計量目標値に近い値となる組合せが選択され、こ
の組合せに係る計量槽３の排出ゲート１２が開か
れ、集合シユート１４内に被計量物品が排出さ
れ、その後に選択された計量槽８に対応する中間
ホツパ７からこれら計量槽８に被計量物品が投入
される。この場合、計量目標値を４で割つた値よ
りも少ない重量の被計量物品が各計量槽８に投入
されていたので、選択された組合せに係る計量槽
８の台数は当然４台以上、例えば５台となる。こ
の選択された計量槽８の台数「５」は、選択計量
槽検出部２４によつて検出される。この検出信号
「５」と設定器２８に設定されている設定値「４」
との差信号「１」が積算器３０に供給される。こ
の積算器３０では同期信号３２が入力されたとき
積算され、この場合、Ｋの値は差信号「１」に対
し、３％を選ぶ。その積算値「１」は係数器３６
によつてＫ倍され、分散制御部４０に供給され、
分散制御部４０は円形分散フイーダ２への加振力
がこの回の計量の際には３％程度強められてい
る。その後、円形分散フイーダ２の投入ゲート６
のうち選択された計量槽８に対応する中間ホツパ
７の上方に位置するものが開かれ、それら中間ホ
ツパ７には当初よりも多くの被計量物品が投入さ
れる。 This combination weigher operates as follows. For example, each weighing tank 8 is loaded with an article to be weighed that is less than the target weighing value, for example, 500 g divided by 4 (half of the eight weighing tanks 8), for example, about 20% less. Suppose there is. In other words, although the weight of the articles to be weighed in each weighing tank varies, the average weight of the articles contained therein is about 100 g. In this state, the combination control unit 18 executes the combination, selects the combination with the value closest to the target measurement value, opens the discharge gate 12 of the weighing tank 3 related to this combination, and stores the articles to be weighed in the collection chute 14. is discharged, and then the articles to be weighed are thrown into these weighing tanks 8 from the intermediate hopper 7 corresponding to the selected weighing tank 8. In this case, since articles to be weighed whose weight was less than the value obtained by dividing the target weight value by 4 were placed in each weighing tank 8, the number of weighing tanks 8 related to the selected combination was naturally 4 or more, e.g. There will be 5 units. The number of selected measuring tanks 8, "5", is detected by the selected measuring tank detection section 24. This detection signal “5” and the setting value “4” set in the setting device 28
A difference signal “1” between the two is supplied to the integrator 30. This integrator 30 integrates when the synchronization signal 32 is input, and in this case, the value of K is selected to be 3% with respect to the difference signal "1". The integrated value "1" is the coefficient multiplier 36
is multiplied by K and supplied to the distributed control unit 40,
The dispersion control unit 40 increases the excitation force to the circular dispersion feeder 2 by about 3% during this weighing. After that, the input gate 6 of the circular dispersion feeder 2
Among them, those located above the intermediate hoppers 7 corresponding to the selected weighing tank 8 are opened, and more articles to be weighed than originally are put into these intermediate hoppers 7.
この中間ホツパ７への投入と並行して組合せ制
御部１８で再び組合せが実行され、再び５台の計
量槽８が選択されると、選択計量槽検出部２４の
出力が再び「５」になり、減算器２６の出力が再
び「１」となる。この減算器２６の出力「１」は
積算器３０に供給され、積算器３０は同期信号３
２が入力されるとこれを積算し、その積算値
「２」は係数器３６でＫ倍され、分散制御部４０
に供給される。分散制御部４０は分散フイーダ２
の加振力をさらに強める。その後、円形分散フイ
ーダ２の投入ゲート６のうち選択された計量槽８
に対応する中間ホツパの上方に位置するものが開
かれ、それら中間ホツパ７にはさらに多くの被計
量物品が投入される。以後、同様にして組合せ計
量を繰返すごとに制御が働いて供給量が逐次増加
していくが、これにともなつて４台の組合せが生
じる機会が生じ、逐次４台の組合せを生じる確率
が増加していく、即ち、減算器２６の出力が
「０」になるまで、加振力が強められ、以後その
加振力が維持される。 In parallel with this feeding into the intermediate hopper 7, the combination control section 18 executes the combination again, and when five weighing tanks 8 are selected again, the output of the selected weighing tank detection section 24 becomes "5" again. , the output of the subtracter 26 becomes "1" again. The output "1" of the subtracter 26 is supplied to the integrator 30, which receives the synchronization signal 3.
2 is input, it is integrated, and the integrated value "2" is multiplied by K in the coefficient multiplier 36, and the distributed control unit 40
is supplied to The distribution control unit 40 is the distribution feeder 2
further strengthen the excitation force. Thereafter, the weighing tank 8 selected from the input gate 6 of the circular dispersion feeder 2
The intermediate hoppers located above the corresponding intermediate hoppers 7 are opened, and more articles to be weighed are thrown into these intermediate hoppers 7. Thereafter, each time the combination weighing is repeated in the same way, the control operates and the supply amount increases sequentially, but with this, an opportunity arises for a combination of four machines to occur, and the probability of a combination of four machines successively increases. In other words, the excitation force is increased until the output of the subtracter 26 becomes "0", and thereafter the excitation force is maintained.
また、各計量槽８に各々計量目標値を４で割つ
た値よりも大きな重量分だけ被計量物品が投入さ
れているとすると、選択される計量槽８の台数は
４台よりも少なくなる。従つて、減算器２６の出
力は（−）となり、上述したのと同様にして減算
器２６の出力が「０」になるまで加振力は弱めら
れ、その状態の加振力が維持される。なお、加振
力を強めた場合も弱めた場合も同様であるが、被
計量物品の見掛比重や形状の大小等が変化して、
現在の加振力では４台の組合せで目標重量に等し
いか近い組合せが得られなくなると、減算器２６
に出力が生じ、その出力に応じて上述したのと同
様にして加振力が制御され、４台の組合せで目標
重量に等しいか近い組合せが自動的に得られるよ
うになる。 Further, if it is assumed that articles to be weighed are loaded into each weighing tank 8 by a weight greater than the value obtained by dividing the target weighing value by 4, the number of selected weighing tanks 8 will be less than 4. Therefore, the output of the subtracter 26 becomes (-), and in the same way as described above, the excitation force is weakened until the output of the subtractor 26 becomes "0", and the excitation force in that state is maintained. . Note that the same applies whether the excitation force is increased or decreased, but the apparent specific gravity and size of the object to be weighed change.
When it is no longer possible to obtain a combination of four units equal to or close to the target weight with the current excitation force, the subtracter 26
An output is generated, and the excitation force is controlled according to the output in the same manner as described above, so that a combination of four units that is equal to or close to the target weight can be automatically obtained.
この実施例の制御系は、サンプリング制御方式
で積分特性であるから、制御器設計の定石として
分散制御部４０には、その加振振幅の調整の上と
下限とを動作範囲として限度を設ける。この実施
例のような場合には、投入ゲート開口時間を0.6
秒とした場合、１回の計量槽への供給量として上
限が約170ｇ、下限が約90ｇ位を与えるのが良い。 Since the control system of this embodiment uses a sampling control method and has an integral characteristic, the distributed control section 40 is set with limits as an operating range of the upper and lower limits of adjustment of the excitation amplitude, as a standard in controller design. In a case like this example, the input gate opening time is 0.6
In seconds, it is preferable that the upper limit is about 170 g and the lower limit is about 90 g as the amount fed to the measuring tank at one time.
以上のように、この発明による組合せ秤では、
選択された計量槽の台数を検出し、これと最も多
くの組合せ数が得られるときの台数、即ち計量槽
のほぼ半数の台数（実施例では４台）との差を求
め、その差に応じて供給装置（実施例では円形振
動フイーダ２）の供給量を増加させるか減少させ
るかしている。従つて、各計量槽に供給されてい
る被計量物品の重量は、目標重量を計量槽のほぼ
半数で除算した値にほぼなり、目標重量に等しい
か近いとして選ばれる組合せは計量槽の半数から
なる。しかも、上述したように計量槽の半数の組
合せが、その組合せ数が最も多いので、目標重量
に等しいか近いとして選択される組合せの合計重
量は非常に目標重量に近いものとなり、計量精度
が非常に高くなる。また、当初各計量槽に供給さ
れている被計量物品の重量が目標重量を計量槽の
ほぼ半数で除算した値から大きくはずれていて
も、自動的に上記の値になるので、この組合せ秤
を稼働させるに際し、供給装置からの供給量を精
密に調整する必要がない。また、選択された計量
槽の台数の検出及び、この検出値と計量槽のほぼ
半数との差の検出等は常時行なわれている。従つ
て、一旦各計量槽に供給されている被計量物品の
重量を、目標重量を計量槽のほぼ半数で除算した
値にほぼ近くなるように制御した後に、被計量物
品の見掛比重や形状の大小等に変動が生じて、各
計量槽内の物品の重量が上記の値からずれ初めて
も、再び上記の値となるように自動的に制御され
るので、常に計量精度を高く維持することもでき
る。 As described above, in the combination weigher according to the present invention,
The number of selected measuring tanks is detected, the difference between this and the number of measuring tanks that yields the largest number of combinations, that is, approximately half the number of measuring tanks (in the example, 4 units) is found, and the difference is calculated according to the difference. The feed rate of the feed device (circular vibrating feeder 2 in the embodiment) is increased or decreased. Therefore, the weight of the articles to be weighed supplied to each weighing tank is approximately equal to the target weight divided by approximately half of the weighing tanks, and the combinations selected as being equal to or close to the target weight are obtained by dividing the target weight by approximately half of the weighing tanks. Become. Furthermore, as mentioned above, half of the combinations in the weighing tanks have the largest number of combinations, so the total weight of the combinations selected as being equal to or close to the target weight will be very close to the target weight, resulting in extremely low weighing accuracy. It becomes expensive. In addition, even if the weight of the article to be weighed that is initially supplied to each weighing tank deviates significantly from the value obtained by dividing the target weight by approximately half of the weighing tanks, it will automatically reach the above value, so you can use this combination scale. When operating, there is no need to precisely adjust the supply amount from the supply device. Furthermore, detection of the number of selected measuring tanks and detection of the difference between this detected value and approximately half of the measuring tanks are constantly performed. Therefore, once the weight of the articles to be weighed supplied to each weighing tank is controlled to be approximately close to the value obtained by dividing the target weight by approximately half of the weighing tanks, the apparent specific gravity and shape of the articles to be weighed are determined. Even if the weight of the items in each weighing tank deviates from the above value due to fluctuations in size, etc., it will be automatically controlled to return to the above value, so weighing accuracy can always be maintained at a high level. You can also do it.
上記の実施例では、計量槽８の台数は８台とし
たが、任意の台数とすることもできる。この場
合、設定器２８に設定される数は、台数が偶数の
場合には台数／２に、台数が奇数の場合には（台
数／２）±0.5とする必要がある。また円形振動フ
イーダ２の加振力を変化させて、被計量物品の投
入量を変化させたが、排出ゲート６の開口度及び
開口時間を変化させてもよい。また、組合せ記憶
部２０に計量目標値の許容範囲内にある組合せを
全て記憶し、そのうち最も計量目標値に近い組合
せを選択する構成としたが、組合せ実行中に計量
目標値に近い組合せが得られるたびに記憶値を更
新する構成としてもよく、また計量目標値の許容
範囲内の組合せが得られると、ただちに被計量物
品を排出する構成としてもよい。さらに、上記の
実施例では８台の計量槽全てで組合せを行なつた
ので設定器２８には「４」を設定したが、例えば
８台の計量槽のうち２台が故障し、組合せに参加
できないような状態になつたときには、使用可能
な計量槽６台の1/2の「３」を設定器２８に設定
する必要がある。すなわち、必らずしも全計量槽
の台数のほぼ1/2の台数を設定器２８に設定する
必要はない。 In the above embodiment, the number of measuring tanks 8 is eight, but any number may be used. In this case, the number set in the setting device 28 needs to be set to number/2 if the number is even, and to (number/2) ±0.5 if the number is odd. Further, although the excitation force of the circular vibrating feeder 2 was changed to change the amount of articles to be weighed, the opening degree and opening time of the discharge gate 6 may also be changed. In addition, the combination storage unit 20 stores all combinations within the allowable range of the target measurement value, and the combination that is closest to the target measurement value is selected. The stored value may be updated each time the weighing target value is determined, or the article may be discharged immediately when a combination of target weighing values within an allowable range is obtained. Furthermore, in the above example, all eight measuring tanks were combined, so "4" was set in the setting device 28, but for example, two of the eight measuring tanks broke down and did not participate in the combination. If the situation is such that it is impossible to do so, it is necessary to set "3" on the setting device 28, which is 1/2 of the six usable measuring tanks. That is, it is not necessarily necessary to set approximately half the number of measuring tanks in the setting device 28 of the total number of measuring tanks.
第１図はこの発明による組合せ秤の１実施例の
概略構成図、第２図は同実施例のブロツク図であ
る。
２……円形振動フイーダ（供給装置）、８……
計量槽、１８……組合せ制御部、２４……選択計
量槽検出部（検出手段）、２８……設定器（設定
手段）、２６……減算器、制御器、３０……積算
器、制御器、３６……係数器、制御器、４０……
分散制御部（供給装置用制御器）。
FIG. 1 is a schematic diagram of an embodiment of a combination weigher according to the present invention, and FIG. 2 is a block diagram of the same embodiment. 2...Circular vibration feeder (feeding device), 8...
Measuring tank, 18...Combination control unit, 24...Selection measuring tank detection unit (detection means), 28...Setting device (setting means), 26...Subtractor, controller, 30...Integrator, controller , 36... coefficient unit, controller, 40...
Distributed control unit (controller for supply device).
Claims (1)
れら計量機のうち物品を排出したものに物品を供
給する供給装置とを有し、組合せの対象となる上
記計量機の計量信号を種々に組合せて、その合計
値を予め与えられた目標重量値の許容範囲内にあ
るかを比較し、ほぼ上記目標重量値に近い組合せ
を選び、当該組合せに対応する計量槽から物品を
排出して、排出された物品をその排出のつど一括
して収集することを繰返す組合せ秤において、 制御信号に応じて上記供給装置の時間当りの供
給量を調整する供給装置用の制御器と、 選ばれる組合せを構成する計量槽の台数の目標
値が設定値として設定されている設定手段と、 上記選ばれた組合せの計量槽の数を検出する検
出手段と、 上記設定手段の設定値と上記検出手段の検出値
とを入力とし、上記検出手段の検出値が上記設定
値よりも大きいとき上記供給装置の時間当りの供
給量を多くする上記制御信号を上記供給装置用の
制御器に供給し、上記検出手段の検出値が上記設
定値よりも小さいとき上記供給装置の時間当りの
供給量を小さくする上記制御信号を上記供給装置
用の制御器に供給する制御器とを、含み、 上記設定手段の設定値が組合せの対象となる上
記計量槽のほぼ半数の値であることを特徴とする
組合せ秤。[Claims] 1. Measuring of the above-mentioned weighing machines to be combined, comprising a plurality of weighing machines each having a measuring tank, and a supply device for supplying an article to one of these weighing machines that discharges the article. Combine various signals, compare the total value to see if it is within the allowable range of the target weight value given in advance, select a combination that is almost close to the target weight value, and then remove the article from the weighing tank corresponding to the combination. In a combination weigher that repeatedly discharges and collects the discharged articles all at once each time the discharged articles are discharged, a controller for the supply device adjusts the amount of supply per hour of the supply device according to a control signal; a setting means in which a target value for the number of measuring tanks constituting the selected combination is set as a set value; a detecting means for detecting the number of measuring tanks in the selected combination; a set value of the setting means and the above. the detection value of the detection means is input, and the control signal for increasing the supply amount per hour of the supply device when the detection value of the detection means is larger than the set value is supplied to the controller for the supply device. , a controller that supplies the control signal to the controller for the supply device to reduce the supply amount per hour of the supply device when the detection value of the detection means is smaller than the set value, and the setting A combination weigher characterized in that the setting value of the means is approximately half the value of the above-mentioned weighing tanks to be combined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17189479A JPS5696224A (en) | 1979-12-28 | 1979-12-28 | Combination weighing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17189479A JPS5696224A (en) | 1979-12-28 | 1979-12-28 | Combination weighing instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5696224A JPS5696224A (en) | 1981-08-04 |
| JPH0115807B2 true JPH0115807B2 (en) | 1989-03-20 |
Family
ID=15931773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17189479A Granted JPS5696224A (en) | 1979-12-28 | 1979-12-28 | Combination weighing instrument |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5696224A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010249590A (en) * | 2009-04-14 | 2010-11-04 | Yamato Scale Co Ltd | Feeder for digital balance and digital balance equipped with the same |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5846126U (en) * | 1981-09-24 | 1983-03-28 | 株式会社石田衡器製作所 | automatic weighing device |
| JPS5892914A (en) * | 1981-11-30 | 1983-06-02 | Ishida Scales Mfg Co Ltd | Combinatorial computing device |
| JPS5946517A (en) * | 1982-09-08 | 1984-03-15 | Anritsu Corp | Combination measuring device |
| JPS58190725A (en) * | 1982-04-30 | 1983-11-07 | Ishida Scales Mfg Co Ltd | Combined weighing or counting method |
| JPS58223717A (en) * | 1982-06-23 | 1983-12-26 | Ishida Scales Mfg Co Ltd | Combination weighing method |
| US4534428A (en) * | 1983-08-11 | 1985-08-13 | Package Machinery Co. | Vibratory feeder control for a weighing system |
| US4535856A (en) * | 1984-02-16 | 1985-08-20 | Package Machinery Co. | Combination weighing machine having short search |
| JPS6145929A (en) * | 1984-08-09 | 1986-03-06 | Ishida Scales Mfg Co Ltd | Measuring instrument |
| JPS61278717A (en) * | 1985-06-03 | 1986-12-09 | Ishida Scales Mfg Co Ltd | Device for controlling supply of commodities in combined weigher or combined counter |
| JPS6242020A (en) * | 1986-08-13 | 1987-02-24 | Ishida Scales Mfg Co Ltd | Combinational weighing equipment |
| JPH04270924A (en) * | 1991-05-24 | 1992-09-28 | Ishida Scales Mfg Co Ltd | Method and device for supplying object to be weighed of automatic weight instrument |
| JPH0715401B2 (en) * | 1992-10-16 | 1995-02-22 | 株式会社イシダ | Combination weighing device |
| JPH0715400B2 (en) * | 1992-10-16 | 1995-02-22 | 株式会社イシダ | Combination weighing device |
| JP2554019B2 (en) * | 1994-04-05 | 1996-11-13 | 株式会社イシダ | Combination weighing device |
| JP6115993B2 (en) * | 2013-03-29 | 2017-04-19 | 大和製衡株式会社 | Combination scale |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4939451A (en) * | 1972-08-12 | 1974-04-12 |
-
1979
- 1979-12-28 JP JP17189479A patent/JPS5696224A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4939451A (en) * | 1972-08-12 | 1974-04-12 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010249590A (en) * | 2009-04-14 | 2010-11-04 | Yamato Scale Co Ltd | Feeder for digital balance and digital balance equipped with the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5696224A (en) | 1981-08-04 |
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