JPH026007B2 - - Google Patents
Info
- Publication number
- JPH026007B2 JPH026007B2 JP57110499A JP11049982A JPH026007B2 JP H026007 B2 JPH026007 B2 JP H026007B2 JP 57110499 A JP57110499 A JP 57110499A JP 11049982 A JP11049982 A JP 11049982A JP H026007 B2 JPH026007 B2 JP H026007B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- hopper
- combination
- hoppers
- weighing
- 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 - Lifetime
Links
- 238000005303 weighing Methods 0.000 claims description 53
- 238000013459 approach Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 8
- 238000004806 packaging method and process Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 108010076504 Protein Sorting Signals Proteins 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/387—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for combinatorial weighing, i.e. selecting a combination of articles whose total weight or number is closest to a desired value
- G01G19/393—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for combinatorial weighing, i.e. selecting a combination of articles whose total weight or number is closest to a desired value using two or more weighing units
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- 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、菓子、果物、野菜などのように
個々の重量にバラツキのある物品（以下、塊状物
と記す）を、ほぼ一定重量となるように、複数個
ひとまとめにして袋詰めなどを行なう際に使用さ
れる、組合せ計量装置に関する。[Detailed Description of the Invention] This invention is a method of combining multiple items such as confectionery, fruits, vegetables, etc. whose individual weights vary (hereinafter referred to as lumps) so that the weight is approximately constant. This invention relates to a combination weighing device used for bag filling.
個々の重量にバラツキのある塊状物を、設定重
量分だけ、複数個ひとまとめにしようとしても、
設定重量との間に誤差が生じる。この誤差は塊状
物１個の平均重量が大きいほど著しくなる。 Even if you try to combine multiple pieces of lumps whose individual weights vary by the set weight,
An error occurs between the set weight and the set weight. This error becomes more significant as the average weight of one lump increases.
この問題を解決するものとして、従来より、第
１図に示す如き組合せ計量装置が用いられてい
る。 To solve this problem, a combination weighing device as shown in FIG. 1 has conventionally been used.
即ち、この組合せ計量装置では、複数の組合せ
ホツパー２1〜２oに、設定重量のほぼＭ分の一に
相当する複数の塊状物をそれぞれフイーダ１1〜
１oによつて供給し、各組合せホツパー２1〜２o
ごとに設けた計量器３1〜３oによつて、収容され
た塊状物をそれぞれ計量する。そして、この計量
器３1〜３oの出力に基いて、所定組合せ個数Ｍ個
の組合せホツパーの組合せによる塊状物の組合せ
重量を、異なるすべての組合せについて算出す
る。この組合せ重量のうち、設定重量Ｗとの差が
最も小となる組合せを判別し、この組合せのＭ個
の組合せホツパー内の塊状物を排出して、集合シ
ユート４などに集合する。 That is, in this combination weighing device, a plurality of lumps corresponding to approximately 1/M of the set weight are loaded into a plurality of combination hoppers 2 1 to 2 o , respectively, from the feeders 1 1 to 2 o.
1 o , each combination hopper 2 1 to 2 o
The contained lumps are weighed by measuring devices 3 1 to 3 o provided in each case. Then, based on the outputs of the weighing devices 3 1 to 3 o , the combined weight of the lumps obtained by combining a predetermined number M of combination hoppers is calculated for all different combinations. Among these combination weights, the combination with the smallest difference from the set weight W is determined, and the lumps in the M combination hoppers of this combination are discharged and collected in the collection chute 4 or the like.
しかして、このような構成の従来の組合せ計量
装置では、各組合せホツパーに収容した複数の塊
状物の重量が、いずれも設定重量Ｗを組合せ個数
Ｍで除した値Ｗ／Ｍからバラツくほど、Ｍ個の組
合せホツパー内の塊状物を集合した組合せ重量も
大きくバラツくことになる。すなわち、第２図に
符号ａで示すように、１個の組合せホツパー内の
複数の塊状物の計量実測値のバラツキの幅がＷ／
Ｍを中心として広いと、Ｍ個の組合せホツパーを
組合せた組合せ重量のバラツキの幅も第２図の符
号ｂで示すように広くなる。したがつて、組合せ
重量が常に設定重量Ｗに極めて近い値として得ら
れるようにするには、各組合せホツパーへの各フ
イーダによる塊状物の供給量が常にＷ／Ｍに極め
て近い値となるようにしなければならない。 In the conventional combination weighing device with such a configuration, the more the weight of the plurality of lumps accommodated in each combination hopper varies from the value W/M obtained by dividing the set weight W by the number of combinations M, The combined weight of the aggregates in the M combination hoppers will also vary widely. That is, as shown by the symbol a in FIG.
If the width is wide around M, the range of variation in the combined weight of M combined hoppers will also be widened, as shown by reference numeral b in FIG. Therefore, in order to ensure that the combined weight is always very close to the set weight W, the amount of lumps fed by each feeder to each combined hopper should always be very close to W/M. There must be.
このため、従来ではフイーダの供給量を作動中
に一定時間おきに抜き取り検査によつて測定し、
その結果に基いて調節していた。しかし、フイー
ダによる供給量を、このように中間調整を行ない
フイーダの作動時間あるいはフイーダのバイブレ
ータの作動電圧を調整しても、供給量は供給する
塊状物の種類、形状などによつて大きく変動し、
またバイブレータの作動電圧の僅かな変化でも著
しく変動し、また湿度、温度などの条件変化によ
つても大きく変動する。このため、初期設定、あ
るいは作動中における中間調節において各フイー
ダによる供給量を精度よく調整することはほとん
ど不可能で、このため高精度の組合せ計量が困難
であつた。また、組合せ計量装置では、組合せホ
ツパーを多数用いるため、多数のフイーダの調節
が非常に煩雑であつた。 For this reason, in the past, the feed rate of the feeder was measured by sampling inspection at regular intervals during operation.
Adjustments were made based on the results. However, even if the amount fed by the feeder is adjusted in this way by adjusting the operating time of the feeder or the operating voltage of the vibrator of the feeder, the amount fed will vary greatly depending on the type and shape of the lumps to be fed. ,
In addition, even a slight change in the operating voltage of the vibrator causes a significant change, and changes in conditions such as humidity and temperature also cause a large change. For this reason, it is almost impossible to accurately adjust the amount fed by each feeder during initial setting or intermediate adjustment during operation, and therefore highly accurate combined metering has been difficult. In addition, since the combination weighing device uses a large number of combination hoppers, it is very complicated to adjust the large number of feeders.
この発明は上記の欠点を改め、各組合せホツパ
ーへの各フイーダによる塊状物の供給量が自動的
に調整されるようにした組合せ計量装置を提供す
ることを目的としている。 The object of the present invention is to correct the above-mentioned drawbacks and provide a combination weighing device in which the amount of lumps fed by each feeder to each combination hopper is automatically adjusted.
以下、図面を参照してこの発明の実施例を説明
する。 Embodiments of the present invention will be described below with reference to the drawings.
第３，４図は、この発明の一実施例を示し、第
３図は組合せ計量装置の機構部の概略構成図、第
４図は制御部の概略構成図である。 3 and 4 show an embodiment of the present invention, FIG. 3 is a schematic diagram of the mechanical section of the combination weighing device, and FIG. 4 is a schematic diagram of the control section.
第３図において、１１は塊状物を順次円形フイ
ーダ１２へ供給する供給器である。円形フイーダ
１２の周縁部下方には、Ｎ個の中間ホツパー１４
１〜１４oが円形に配置され、それぞれフイーダ１
３1〜１３oを介して複数の塊状物が供給される。
中間ホツパー１４1〜１４oの下方には、それぞれ
計量ホツパー１６4〜１６oが配置されている。中
間ホツパー１４1〜１４oに収容された塊状物は、
排出ゲート１５1〜１５oを開くと、それぞれ計量
ホツパー１６1〜１６oへ落下収容される。 In FIG. 3, reference numeral 11 is a feeder that sequentially supplies lumps to a circular feeder 12. N intermediate hoppers 14 are provided below the periphery of the circular feeder 12.
1 to 14 o are arranged in a circle, each with feeder 1
A plurality of agglomerates are fed via 3 1 to 13 o .
Weighing hoppers 16 4 to 16 o are arranged below the intermediate hoppers 14 1 to 14 o , respectively. The lumps accommodated in the intermediate hoppers 14 1 to 14 o are
When the discharge gates 15 1 to 15 o are opened, the samples are dropped into the weighing hoppers 16 1 to 16 o , respectively.
計量ホツパー１６1〜１６oには、それぞれ計量
器１７1〜１７oが設置されている。計量器１７1
〜１７oは、それぞれ計量ホツパー１６1〜１６o
に収容された複数の塊状物を計量し、重量を表わ
す重量信号を出力する。 Weighing devices 17 1 to 17 o are installed in the weighing hoppers 16 1 to 16 o , respectively. Measuring instrument 17 1
~17 o are the weighing hoppers 16 1 ~16 o , respectively.
A weight signal representing the weight is output by weighing a plurality of lumps housed in the container.
計量ホツパー１６1〜１６oの下方には、集合シ
ユート１９が設置されている。計量ホツパー１６
１〜１６oに収容された塊状物はそれぞれ計量ホツ
パー１６1〜１６oの排出ゲート１８1〜１８oを開
くと、集合シユート１９に落下する。 A collection chute 19 is installed below the weighing hoppers 16 1 to 16 o . Measuring hopper 16
When the discharge gates 18 1 to 18 o of the weighing hoppers 16 1 to 16 o are opened, the lumps stored in the weighing hoppers 1 to 16 o fall into the collecting chute 19.
集合シユート１９の下方には包装機２１が設置
されている。集合シユート１９の底部には、一定
時間ごとにあるいは包装機２１とのタイミングを
合わせて開くタイミングホツパー２０が、設けて
ある。 A packaging machine 21 is installed below the collection chute 19. At the bottom of the collection chute 19, a timing hopper 20 is provided which opens at regular intervals or in synchronization with the packaging machine 21.
排出ゲート１８1〜１８oは、組合せ排出装置２
４の排出制御装置２７によつて開閉制御される。 The discharge gates 18 1 to 18 o are the combined discharge device 2
The opening/closing is controlled by the discharge control device 27 of No. 4.
前記計量器１７1〜１７oからの重量信号は、第
４図に示すように、組合せ排出装置２４の計量値
記憶回路２５へ送られる。計量値記憶回路２５は
計量ホツパー１６1〜１６o内の収容物の重量をそ
れぞれ記憶する。 The weight signals from the scales 17 1 to 17 o are sent to the weighed value storage circuit 25 of the combined discharge device 24, as shown in FIG. The weighing value storage circuit 25 stores the weights of the objects contained in the weighing hoppers 16 1 to 16 o , respectively.
組合せ選定回路２６は、計量値記憶回路２５に
記憶された各計量ホツパー１６1〜１６oの収容物
の重量信号に基いて、Ｍ個の計量ホツパーの組合
せによる塊状物の組合せ重量を、異なるすべての
組合せについて算出する組合せ計算部２６ａと、
設定重量を設定記憶する重量設定部２６ｂと、組
合せ計算部２６ａの組合せ重量出力と重量設定部
２６ｂの設定重量出力とを比較し、設定重量との
差が最も小となる計量ホツパーの組合せを判別し
て組合せ選別信号を出力する組合せ判別部２６ｃ
とを備えている。 The combination selection circuit 26 selects the combined weight of the lumps resulting from the combination of M weighing hoppers based on the weight signals of the objects stored in each of the weighing hoppers 16 1 to 16 o stored in the weighing value storage circuit 25. a combination calculation unit 26a that calculates the combinations of;
The weight setting unit 26b that stores the set weight sets and stores the combined weight output of the combination calculation unit 26a and the set weight output of the weight setting unit 26b, and determines the combination of weighing hoppers that has the smallest difference from the set weight. A combination determination unit 26c outputs a combination selection signal.
It is equipped with
排出制御装置２７は、前記組合せ選別信号を受
けると、排出ゲート１８1〜１８oのうちの指定さ
れたゲートを開くとともに、一定時間おいて排出
済みの計量ホツパーへの中間ホツパーの排出ゲー
トを開くように、開閉制御を行なう。 Upon receiving the combination sorting signal, the discharge control device 27 opens a designated gate among the discharge gates 18 1 to 18 o , and also opens the discharge gate of the intermediate hopper to the weighing hopper that has already been discharged after a certain period of time. Opening/closing control is performed as follows.
また、各計量器１７1〜１７oからの各重量信号
は、第４図に示すように、計量の度に、それぞれ
各平均重量演算回路２９1〜２９oのシフトレジス
タ３１1〜３１oへ送られ、シフトレジスタ３１1
〜３１oでは、計量の度に入力する重量信号を１
つづつシフトして、連続Ｐ回の重量信号を加算器
３２1〜３２oへ出力する。 Moreover, each weight signal from each weighing device 17 1 to 17 o is sent to a shift register 31 1 to 31 o of each average weight calculation circuit 29 1 to 29 o , respectively, at each weighing, as shown in FIG. sent to shift register 31 1
~31 o , the weight signal input every time is 1
The weight signals are shifted one by one and outputted to the adders 32 1 to 32 o successively P times.
この連続Ｐ回の重量信号はそれぞれ加算器３２
１〜３２oで加算され、この加算値は、それぞれ
１／Ｐ除算器３３1〜３３oで１／Ｐに除算され
る。すなわち、各計量ホツパー１６1〜１６oごと
に、連続Ｐ回について平均供給重量が各１／Ｐ除
算器３３1〜３３oから出力される。 The weight signals of these consecutive P times are each sent to an adder 32.
1 to 32o , and this added value is divided by 1/P by 1/P dividers 331 to 33o , respectively. That is, for each weighing hopper 16 1 to 16 o , the average feed weight for P consecutive times is output from each 1/P divider 33 1 to 33 o .
なお、このシフトレジスタ３１1〜３１oのクロ
ツクパルスとして、リミツト設定器３２に設定さ
れたリミツト重量と各計量器１７1〜１７oからの
各重量信号とをそれぞれ比較し、重量信号がリミ
ツト信号による重量範囲内の場合に出力するコン
パレータ３０1〜３０oの出力が用いられる。この
ため、重量信号がリミツト範囲外の場合には、飛
び越して次の重量信号が加算器で加算される。 As a clock pulse for the shift registers 31 1 to 31 o , the limit weight set in the limit setter 32 and each weight signal from each weighing device 17 1 to 17 o are compared, and the weight signal is determined by the limit signal. The outputs of the comparators 30 1 to 30 o , which are output when the weight is within the weight range, are used. Therefore, if the weight signal is outside the limit range, the next weight signal is skipped and added by the adder.
各１／Ｐ除算器３３1〜３３oの出力はそれぞれ
減算器３５1〜３５oへ送られる。 The outputs of the 1/P dividers 33 1 to 33 o are sent to subtracters 35 1 to 35 o , respectively.
また重量設定部２６ｂに設定された設定重量Ｗ
は、１／Ｍ除算器３４で１／Ｍに除除算され、減
算器３５1〜３５oへ送られる。 Also, the set weight W set in the weight setting section 26b
is divided by 1/M by the 1/M divider 34 and sent to the subtracters 35 1 to 35 o .
減算器３５1〜３５oは、各１／Ｐ除算器３３1
〜３３oの出力値と１／Ｍ除算器３４の出力値と
の差信号を、各フイーダ１３1〜１３oによる供給
量を制御するフイーダ制御回路３６1〜３６oへ、
それぞれ出力する。 The subtracters 35 1 to 35 o are each 1/P divider 33 1
The difference signal between the output value of ~ 33o and the output value of the 1/M divider 34 is sent to feeder control circuits 361 ~ 36o that control the amount supplied by each feeder 131 ~ 13o ,
Output each.
次に上記実施例による組合せ計量装置の動作を
説明する。 Next, the operation of the combination weighing device according to the above embodiment will be explained.
塊状物が、供給器１１、円形フイーダ１２を経
て、フイーダ１３1〜１３oによつてそれぞれ中間
ホツパー１４1〜１４oへ供給され、中間ホツパー
１４1〜１４oから各計量ホツパー１６1〜１６oに
収容され、それぞれ計量器１７1〜１７oによつて
計量される。計量値記憶回路２５は、計量器１７
１〜１７oからの重量信号を受けて、収容した計量
ホツパーごとの収容物の重量を記憶する。 The lumps are fed through the feeder 11 and the circular feeder 12 to intermediate hoppers 14 1 to 14 o by feeders 13 1 to 13 o, respectively, and from the intermediate hoppers 14 1 to 14 o to each weighing hopper 16 1 to 16 o and are weighed by scales 17 1 to 17 o , respectively. The measured value storage circuit 25 is connected to the measuring device 17.
1 to 17 o , and stores the weight of the stored items in each weighing hopper.
組合せ選定回路２６は、記憶された重量信号に
基いて、Ｍ個の計量ホツパーの組合せによる組合
せ重量を、すべての異なる組合せについて算出
し、設定重量Ｗとの差が最も小となる計量ホツパ
ーの組合せを選定し、組合せ選別信号を排出制御
装置２７へ送出する。排出制御装置２７は、組合
せ選別信号によつて指定されたＭ個の計量ホツパ
ーの排出ゲートを開き、集合シユート１９に排出
させる。塊状物は集合シユート１９でひとまとめ
にされ、タイミングホツパー２０が開くと包装機
２１へ落下して袋詰めされる。 The combination selection circuit 26 calculates the combination weight of the M weighing hopper combinations for all different combinations based on the stored weight signal, and selects the weighing hopper combination that has the smallest difference from the set weight W. is selected, and a combination selection signal is sent to the emission control device 27. The discharge control device 27 opens the discharge gates of the M weighing hoppers designated by the combination sorting signal and causes them to be discharged into the collection chute 19. The lumps are gathered together in a collection chute 19, and when a timing hopper 20 is opened, they fall into a packaging machine 21 and are packed into bags.
次に、残りの計量ホツパーによつて組合せが同
様に判別され、組合せ排出が行われる。この間、
排出済みの計量ホツパーには、フイーダ、中間ホ
ツパーを経て塊状物が収容される。新たに収容さ
れた計量ホツパーについて計量器から重量信号が
出力される。このように、計量ホツパーの排出、
充填を連続的に行いつつ、組合せ排出が次々と行
われる。 Next, the combination is determined in the same manner by the remaining weighing hoppers, and the combination is discharged. During this time,
The discharged weighing hopper receives the lumps via the feeder and intermediate hopper. A weight signal is output from the scale for the newly accommodated weighing hopper. In this way, the discharge of the metering hopper,
The combined discharges are carried out one after another while the filling is carried out continuously.
各計量器１７1〜１７oからの重量信号は、この
組合せ計量動作の継続中に、計量の度に平均重量
演算回路２９1〜２９oへ送られ、連続Ｐ回の計量
についての重量信号が、加算器３２1〜３２oで一
つずつシフトしながら加算され、この加算値が
１／Ｐ除算器３３1〜３３oで１／Ｐに除算され
て、連続Ｐ回の重量信号についての平均重量が算
出される。なお、計量ホツパーが、供給されない
まま、あるいは二重に供給された場合のように、
重量信号がリミツト値の範囲外の場合には、コン
パレータ３０1〜３０oからのクロツクパルスが出
力されない。したがつて、リミツト値の範囲外の
重量信号は平均値演算から除外され、次の重量信
号へ飛び越して平均値演算がなされる。 The weight signals from each of the scales 17 1 to 17 o are sent to the average weight calculation circuits 29 1 to 29 o each time the combined weighing operation continues, and the weight signals for P consecutive weighings are sent to the average weight calculation circuits 29 1 to 29 o . , are added while being shifted one by one in the adders 32 1 to 32 o , and this added value is divided by 1/P in the 1/P dividers 33 1 to 33 o to calculate the average of the weight signals of consecutive P times. The weight is calculated. In addition, if the weighing hopper is not supplied or is supplied twice,
If the weight signal is outside the limit value range, no clock pulses are output from the comparators 301 to 30o . Therefore, weight signals outside the limit value range are excluded from the average value calculation, and the average value calculation is performed by skipping to the next weight signal.
１／Ｍ除算器３４は、設定重量Ｗを組合せ個数
Ｍで除算した値Ｗ／Ｍ、即ち、計量ホツパー１個
当りの目標重量を減算器３５1〜３５oへ出力す
る。減算器３５1〜３５oは、それぞれ各平均重量
演算回路２９1〜２９oの出力と設定重量を１／Ｍ
した値Ｗ／Ｍとの差を算出し、差信号を各フイー
ダ制御回路３６1〜３６oへ送る。各フイーダ１３
１〜１３oは、各フイーダ制御回路３６1〜３６oに
よつて、各減算器３５1〜３５oからの差信号が零
に近づくように、すなわち、連続Ｐ回の平均重量
がＷ／Ｍに近づくように、制御される。 The 1/M divider 34 outputs the value W/M obtained by dividing the set weight W by the number of combinations M, that is, the target weight per weighing hopper, to the subtractors 35 1 to 35 o . The subtracters 35 1 to 35 o each divide the output of each average weight calculation circuit 29 1 to 29 o and the set weight by 1/M.
The difference from the value W/M is calculated, and the difference signal is sent to each feeder control circuit 36 1 to 36 o . Each feeder 13
1 to 13 o are controlled by each feeder control circuit 36 1 to 36 o so that the difference signal from each subtractor 35 1 to 35 o approaches zero, that is, the average weight of consecutive P times is set to W/M. controlled so that it approaches.
なお、上記実施例では、組合せホツパーとして
計量ホツパー１６1〜１６oを用いた場合を説明し
たが、第５図に示すように、組合せ数を増やすた
めに、組合せホツパーとして記憶ホツパー２２1
〜２２oを設け、記憶ホツパーを組合せるように
してもよい。 In the above embodiment, the case where the weighing hoppers 16 1 to 16 o were used as the combination hopper was explained, but as shown in FIG. 5, in order to increase the number of combinations, the memory hopper 22 1 was used as the combination hopper.
~22 ° may be provided and a storage hopper may be combined.
すなわち、１個の計量ホツパーごとに２個の記
憶ホツパーを設け、計量ホツパー１６1〜１６oで
計量済みの塊状物を、排出ゲート１８1〜１８2o
によつていずれか空の記憶ホツパー２２1〜２２2
ｏへ収容できるようにし、Ｍ個の記憶ホツパーの
収容物の重量を組合せ選定回路で組合せる。そし
て排出ゲート２３1〜２３2oのうち選定されたＭ
個の記憶ホツパーの排出ゲートを開いて集合シユ
ート１９に排出集合させる。 That is, two storage hoppers are provided for each weighing hopper, and the lumps weighed by the weighing hoppers 16 1 to 16 o are transferred to the discharge gates 18 1 to 18 2 o .
Depending on which memory hopper is empty 22 1 to 22 2
o , and the weights of the items stored in the M storage hoppers are combined by a combination selection circuit. Then, M selected from discharge gates 23 1 to 23 2o
The discharge gates of the individual storage hoppers are opened to discharge and collect them in the collection chute 19.
なお、第４図に示した実施例では、計量の度に
一つずつシフトしながら連続Ｐ回の重量信号につ
いての平均重量を演算する場合を示したが、所定
回数、例えばＬ回の計量につき一回を抜き取り、
抜き取りしたＰ回の重量信号についての平均重量
を一つずつシフトしながら演算するようにしても
よい。 In addition, in the embodiment shown in FIG. 4, the average weight of P weight signals is calculated while shifting one by one each time the weight is weighed. Take out one time,
The calculation may be performed while shifting the average weight of the weight signals sampled P times one by one.
第６図はこのための平均重量演算回路の構成を
示すもので、コンパレータ３０1〜３０oのクロツ
クパルの出力数をカウントし、Ｌになると出力す
るカウンタ３７1〜３７oが第４図の回路に付加さ
れている。 FIG. 6 shows the configuration of an average weight calculation circuit for this purpose. Counters 37 1 to 37 o , which count the number of clock pulses output from the comparators 30 1 to 30 o and output when they reach L, are connected to the circuit shown in FIG. 4. is added to.
このため、カウンタ３７1〜３７oによつて、Ｌ
回の計量ごとに一つずつクロツクパルスがシフト
レジスタ３１1〜３１oへ入力し、Ｌ回ごとに一回
を抜き取り、抜き取りしたＰ回の重量信号を平均
した平均値が演算される。 Therefore, by the counters 37 1 to 37 o , L
One clock pulse is input to the shift registers 31 1 to 31 o for each weighing, one clock pulse is extracted every L times, and an average value is calculated by averaging the weight signals extracted P times.
さらに、上記実施例の他に、連続Ｐ回の重量信
号を集落サンプリングして平均重量を演算するよ
うにしてもよい。 Furthermore, in addition to the above-mentioned embodiment, the average weight may be calculated by sampling the weight signals consecutively P times.
以上説明したように、本発明の組合せ計量装置
では、組合せ計量動作中に各組合せホツパー内の
重量の平均値を常に演算し、この平均重量が設定
重量を組合せ個数で除算した重量に近づくように
各フイーダの供給量を常時制御するようにしたの
で、
(イ) 設定重量との差が小さい組合せ重量を常に得
ることができる。 As explained above, in the combination weighing device of the present invention, the average value of the weight in each combination hopper is constantly calculated during the combination weighing operation, and the average weight is adjusted so that this average weight approaches the set weight divided by the number of combinations. Since the feed rate of each feeder is constantly controlled, (a) a combination weight with a small difference from the set weight can always be obtained.
(ロ) フイーダによる供給量は、塊状物の種類、形
状、あるいは温度、湿度などによつて大きく変
動するが、平均重量を常に検出して自動的に供
給量を制御するので、塊状物の種類、形状、温
度、湿度などの変化に追随して供給量を制御で
きる。(b) The amount fed by the feeder varies greatly depending on the type and shape of the lumps, as well as temperature, humidity, etc., but since the average weight is constantly detected and the feed amount is automatically controlled, , the supply amount can be controlled by following changes in shape, temperature, humidity, etc.
(ハ) 供給量の変動が常に検出され、目標値に近づ
くように傾向制御されるので、フイーダの初期
設定が簡単になる。(c) Since fluctuations in the supply amount are constantly detected and the trend is controlled to approach the target value, the initial setting of the feeder becomes easy.
(ニ) フイーダの数が多くても各フイーダが自動制
御されるので、従来のような煩雑な各フイーダ
の調整操作が不要になる。(d) Even if there are a large number of feeders, each feeder is automatically controlled, eliminating the need for complicated adjustment operations for each feeder as in the past.
第１図は従来の組合せ計量装置を示す概略構成
図、第２図は計量ホツパーの収容物の重量のバラ
ツキと組合せ重量のバラツキとの関係を示す図、
第３図はこの発明の一実施例の機構部を示す概略
構成図、第４図はその制御部を示す概略構成図、
第５図は機構部の他の実施例を示す概略構成図、
第６図は制御部の他の実施例を示す概略構成図で
ある。
１１……供給器、１２……円形フイーダ、１３
１〜１３o……フイーダ、１６1〜１６o……計量ホ
ツパー、１７1〜１７o……計量器、１８1〜１８2o
……排出ゲート、１９……集合シユート、２０…
…タイミングホツパー、２１……包装機、２２1
〜２２2o……記憶ホツパー、２３1〜２３2o……排
出ゲート、２４……組合せ排出装置、２５……計
量値記憶回路、２６……組合せ選定回路、２７…
…排出制御装置、２８……リミツト設定器、２９
１〜２９o……平均重量演算回路、３０1〜３０o…
…コンパレータ、３１1〜３１o……シフトレジス
タ、３２1〜３２o……加算器、３３1〜３３o……
１／Ｐ除算器、３４……１／Ｍ除算器、３５1〜
３５o……減算器、３６1〜３６o……フイーダ制
御回路。
FIG. 1 is a schematic configuration diagram showing a conventional combination weighing device, and FIG. 2 is a diagram showing the relationship between variations in the weight of items contained in the weighing hopper and variations in the combined weight.
FIG. 3 is a schematic configuration diagram showing a mechanism section of an embodiment of the present invention, FIG. 4 is a schematic configuration diagram showing a control section thereof,
FIG. 5 is a schematic configuration diagram showing another embodiment of the mechanism section;
FIG. 6 is a schematic configuration diagram showing another embodiment of the control section. 11... Feeder, 12... Circular feeder, 13
1 ~ 13 o ... Feeder, 16 1 ~ 16 o ... Weighing hopper, 17 1 ~ 17 o ... Measuring device, 18 1 ~ 18 2o
...Discharge gate, 19...Collection chute, 20...
...Timing hopper, 21...Wrapping machine, 22 1
~22 2o ... Memory hopper, 23 1 ~23 2o ... Discharge gate, 24... Combination discharge device, 25... Measured value storage circuit, 26... Combination selection circuit, 27...
...Emission control device, 28...Limit setting device, 29
1 ~ 29 o ... Average weight calculation circuit, 30 1 ~ 30 o ...
... Comparator, 31 1 to 31 o ... Shift register, 32 1 to 32 o ... Adder, 33 1 to 33 o ...
1/P divider, 34...1/M divider, 35 1 ~
35 o ...subtractor, 36 1 to 36 o ... feeder control circuit.
Claims (1)
た複数のフイーダを介して被計量物を供給し、前
記各ホツパーに収容した被計量物の計量値の組合
せを所定の設定重量に基づいて選定し、選定され
たホツパー内の被計量物を排出集合させる組合せ
計量装置において、 リミツト値が予め設定されたリミツト設定手段
と、 前記各ホツパーに収容した被計量物の計量値が
前記リミツト値内か否かを判定する各ホツパーご
とに対応して設けられた判定手段と、 前記各判定手段で前記リミツト値内と判定され
た計量値を、所定回数分順次シフトしながら加算
して加算結果を順次シフトしながら出力する各ホ
ツパーごとに対応して設けられた加算手段と、 前記各加算手段からの加算結果を前記所定回数
で除算する各ホツパーごとに対応して設けられた
除算手段と、 前記設定重量を組合せの所定ホツパー数で除算
した値と、前記除算手段で得られた値とを減算す
る各ホツパーごとに対応して設けられた減算手段
と、 前記各減算手段で得られた値が零に近づくよう
に各フイーダによる各ホツパーへの被計量物の供
給量を制御する各ホツパーごとに対応して設けら
れたフイーダ制御手段とを備えたことを特徴とす
る組合せ計量装置。[Scope of Claims] 1. Objects to be weighed are fed through a plurality of feeders provided correspondingly to a plurality of hoppers, and a combination of measured values of the objects to be weighed accommodated in each of the hoppers is set to a predetermined set weight. A combination weighing device that discharges and collects the objects to be weighed in the selected hoppers based on the selected hoppers, and a limit setting means in which a limit value is set in advance; Judgment means provided corresponding to each hopper to judge whether or not it is within the limit value, and the weighing values judged to be within the limit value by each judgment means are added while sequentially shifting a predetermined number of times. Adding means provided corresponding to each hopper to sequentially shift and output the addition results; and dividing means provided corresponding to each hopper to divide the addition results from each addition means by the predetermined number of times. and subtracting means provided corresponding to each hopper for subtracting the value obtained by dividing the set weight by the predetermined number of hoppers in the combination and the value obtained by the dividing means; 1. A combination weighing device comprising: a feeder control means provided corresponding to each hopper for controlling the amount of objects to be weighed by each feeder to each hopper so that the value approaches zero.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11049982A JPS59622A (en) | 1982-06-26 | 1982-06-26 | Combinational weighing device |
| KR1019830002781A KR870000329B1 (en) | 1982-03-30 | 1983-06-21 | Measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11049982A JPS59622A (en) | 1982-06-26 | 1982-06-26 | Combinational weighing device |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32455387A Division JPS63171324A (en) | 1987-12-22 | 1987-12-22 | Combination weighing instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59622A JPS59622A (en) | 1984-01-05 |
| JPH026007B2 true JPH026007B2 (en) | 1990-02-07 |
Family
ID=14537304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11049982A Granted JPS59622A (en) | 1982-03-30 | 1982-06-26 | Combinational weighing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59622A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010151443A (en) * | 2008-11-25 | 2010-07-08 | Yamato Scale Co Ltd | Combination scale |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JPS62113028A (en) * | 1985-11-12 | 1987-05-23 | Anritsu Corp | Combination weighing apparatus |
| JPS62113027A (en) * | 1985-11-12 | 1987-05-23 | Anritsu Corp | Combination weighing apparatus |
| JPS62113025A (en) * | 1985-11-12 | 1987-05-23 | Anritsu Corp | Combination weighing apparatus |
| JPH0695037B2 (en) * | 1985-11-12 | 1994-11-24 | アンリツ株式会社 | Combination weighing device |
| JPS6321517A (en) * | 1986-07-14 | 1988-01-29 | Yamato Scale Co Ltd | Article supply controller for combined weighing equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5414946A (en) * | 1977-07-06 | 1979-02-03 | Bayer Ag | Novel substituted phenoxybenzyoxycalbonyl derivative * production thereof and use as arthropod killing agent |
| JPS57169627A (en) * | 1981-04-13 | 1982-10-19 | Yamato Scale Co Ltd | Combination balance |
-
1982
- 1982-06-26 JP JP11049982A patent/JPS59622A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5414946A (en) * | 1977-07-06 | 1979-02-03 | Bayer Ag | Novel substituted phenoxybenzyoxycalbonyl derivative * production thereof and use as arthropod killing agent |
| JPS57169627A (en) * | 1981-04-13 | 1982-10-19 | Yamato Scale Co Ltd | Combination balance |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010151443A (en) * | 2008-11-25 | 2010-07-08 | Yamato Scale Co Ltd | Combination scale |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59622A (en) | 1984-01-05 |
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