WO2014064734A1 - Combination scale and measuring and packaging system - Google Patents

Combination scale and measuring and packaging system Download PDF

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Publication number
WO2014064734A1
WO2014064734A1 PCT/JP2012/006819 JP2012006819W WO2014064734A1 WO 2014064734 A1 WO2014064734 A1 WO 2014064734A1 JP 2012006819 W JP2012006819 W JP 2012006819W WO 2014064734 A1 WO2014064734 A1 WO 2014064734A1
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WO
WIPO (PCT)
Prior art keywords
weight
combination
packaged
predetermined number
weighed
Prior art date
Application number
PCT/JP2012/006819
Other languages
French (fr)
Japanese (ja)
Inventor
豊彦 林
伸昌 丁坪
義紘 白井
Original Assignee
大和製衡株式会社
Priority date (The priority date 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 date listed.)
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Application filed by 大和製衡株式会社 filed Critical 大和製衡株式会社
Priority to PCT/JP2012/006819 priority Critical patent/WO2014064734A1/en
Publication of WO2014064734A1 publication Critical patent/WO2014064734A1/en

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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/30—Devices or methods for controlling or determining the quantity or quality or the material fed or filled
    • B65B1/32—Devices or methods for controlling or determining the quantity or quality or the material fed or filled by weighing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B2220/00—Specific aspects of the packaging operation
    • B65B2220/16—Packaging contents into primary and secondary packaging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B35/00—Supplying, feeding, arranging or orientating articles to be packaged
    • B65B35/30—Arranging and feeding articles in groups
    • B65B35/32—Arranging and feeding articles in groups by gravity

Definitions

  • the present invention relates to a combination weigher for weighing an object to be weighed such as confectionery and a weighing packaging system using the same.
  • an object to be weighed with a combination weigher is generally put into a packaging machine and packed in a bag, for example.
  • Such a combination weigher has a plurality of weighing hoppers for weighing the objects to be supplied, and various combinations of the weight values of the objects to be weighed by the plurality of weighing hoppers are combined to give a total weight. Select a combination with an allowable weight range that is equal to or greater than the target combination weight, discharge the object to be weighed from the weighing hopper of the selected combination, and put the discharged object to be packed into the packaging machine located below the combination weigher And I am trying to pack it in a bag.
  • the combination weigher selects a combination of objects to be weighed that is equal to or greater than the target combination weight, so that the weight of the packaged product packaged by the packaging machine may be less than the target combination weight as long as it is accurately weighed. Absent.
  • the weight of the contents of the package is displayed on the label of the package as a so-called nominal weight, but the packaged goods on the market are weighed so that the weight of the contents does not fall below the nominal weight. It is packaged.
  • the weight of the packaged product means the weight of the contents of the packaged product.
  • the average weight of the packaged goods in each lot (the total weight of a large number of packaged goods constituting the lot divided by the number of packaged goods) If the value) is equal to or greater than the nominal weight of the packaged product, it may be included if a packaged product within a predetermined weight range less than the nominal weight is equal to or less than a predetermined ratio.
  • a packaged product exceeding the nominal weight is produced so that the total average weight of the produced packaged product exceeds the nominal weight.
  • the packaged product in the specified weight range that is lower than the nominal weight is produced so as to be a predetermined ratio or less. Accordingly, a packaged product having a nominal weight or more or less than the nominal weight is produced.
  • the combination weigher has the following problems when a predetermined number of packages packed in a packaging machine is boxed, for example, in a subsequent stage of the packaging machine.
  • the packaged product in the predetermined weight range less than the nominal weight is included in the lot in a predetermined ratio.
  • the following may be included, for example, during the production of a lot, when the average weight of the whole package produced so far is significantly higher than the nominal weight of the package:
  • the combination weigher selects and discharges a combination of objects to be weighed that are less than the nominal weight several times in succession. May produce.
  • a predetermined number of packages including the plurality of packages less than the nominal weight will be boxed.
  • the average weight of a given number of packages in a package is less than the nominal weight of the package, that is, in a boxed package box, the average weight of the package will be less than the nominal weight of the package .
  • the average weight of a given number of packages packed in a certain box will be This can result in less than the nominal weight of the item, which would be detrimental to the consumer who purchased the box.
  • the present invention has been made in view of the above-described problems, and can cope with an average system, and in the case where a predetermined number of packages are packed in a box or in a bag, It is an object of the present invention to provide a combination weigher in which an average weight does not fall below a nominal weight of a packaged product, and a weighing and packaging system using the combination weigher.
  • the present invention is configured as follows.
  • the combination weigher of the present invention includes a combination operation unit that selects a combination of objects to be weighed in which a combination weight obtained by combining the weights of objects to be weighed by a plurality of weighing units is equal to or greater than a target combination weight.
  • the combination of the objects to be weighed selected by the combination calculation unit is discharged to a packaging machine, and the combination of the objects to be weighed is packaged by the packaging machine into one packaged product. Because
  • the combination calculation unit allows, for each predetermined number of the packaged products packaged by the packaging machine, the predetermined number of packaged products to include a packaged product having a weight less than the nominal weight of the packaged product. However, the combination calculation is performed by changing the target combination weight so that the average weight of the predetermined number of the packaged products is equal to or greater than the nominal weight.
  • the packaging machine is to pack a combination of objects to be weighed from a combination weigher into a single packaged product by bagging or boxing.
  • the weight of the packaged product is allowed to be less than the nominal weight, and the average weight of the predetermined number of packaged products is equal to or greater than the nominal weight.
  • the target combination weight is changed to perform the combination calculation, so that the average weight of the predetermined number of packaged products is the nominal weight even if the predetermined number of packaged products include packages less than the nominal weight.
  • the combination calculation unit accumulates a deviation between the combination weight obtained by combining the weights of the objects to be weighed and the nominal weight, and the target combination weight according to the accumulated deviation. Is the nominal weight or a weight less than the nominal weight, and the accumulated deviation is initialized for each predetermined number.
  • the combination of objects to be weighed when the combined weight of the weights of the selected objects to be weighed exceeds the nominal weight and the accumulated deviation increases, the combination of objects to be weighed that is less than the nominal weight can be selected. Therefore, if the target combination weight is less than the nominal weight and conversely, the combination weight combining the weight of the selected objects to be measured is less than the nominal weight and the accumulated deviation becomes smaller, the less than the nominal weight. Since the combination weight of the objects to be weighed cannot be selected, the combination calculation with the target combination weight as the nominal weight is performed, so that the average weight of the predetermined number of packages can be made equal to or greater than the nominal weight. it can.
  • the combination calculation unit is less than a first allowable value lower than the nominal weight and includes the first allowable value in the predetermined number of packages.
  • the ratio of the packaged product having a weight that is equal to or greater than the second allowable value is less than a predetermined ratio, and the packaged product having a weight less than the second allowable value is not included.
  • the target combination weight is changed.
  • the first and second permissible values and the predetermined ratio are preferably values and ratios stipulated by the average system employed in European countries and regions.
  • the first allowable value is a value obtained by subtracting a predetermined allowable error from the nominal weight
  • the second allowable value is the predetermined weight from the nominal weight. This is a value obtained by subtracting twice the allowable error, and includes a setting unit for setting the predetermined number, the predetermined allowable error, and the predetermined ratio.
  • the predetermined tolerance is a value defined by the average system adopted in European countries and regions.
  • the combination calculation unit performs the combination calculation by changing the target combination weight based on the predetermined number, the predetermined tolerance, and the predetermined ratio set by the setting unit,
  • the average weight is greater than or equal to the nominal weight and less than a first tolerance below the nominal weight and greater than or equal to a second tolerance below the first tolerance in a predetermined number of packages.
  • the packaged product is a primary packaged product, and the predetermined number of the primary packaged product is packaged as a secondary packaged product after the packaging machine.
  • the secondary package product is preferably a package product in which a predetermined number of primary package products are packed in a box or bag.
  • the average weight of a predetermined number of primary packages packed and packaged as a secondary package does not become less than the nominal weight of the primary package.
  • the weighing and packaging system of the present invention includes a combination operation unit that selects a combination of objects to be weighed in which a combination weight obtained by combining the weights of objects to be weighed by a plurality of weighing units is equal to or greater than a target combination weight.
  • a combination weigher that discharges the combination of the objects to be weighed selected by the combination calculation unit;
  • a primary packaging machine for packaging the combination of the objects to be weighed discharged from the combination weigher and discharging it as one primary package;
  • a measuring and packaging system including a secondary packaging machine that wraps a predetermined number of the primary packaging products discharged from the primary packaging machine and discharges the primary packaging products as one secondary packaging product,
  • the combination calculation unit of the combination weigher includes a primary package product having a weight less than a nominal weight of the primary package product in the predetermined number of the primary package products packaged by the secondary packaging machine.
  • the combination calculation is performed by changing the target combination weight so that the average weight of the predetermined number of the primary package products is equal to or greater than the nominal weight.
  • the predetermined number of the primary packaged products to be the secondary packaged product allows the weight of the primary packaged product to be less than its nominal weight, while the predetermined number of primary packaged products Since the combination calculation is performed by changing the target combination weight so that the average weight is equal to or greater than the nominal weight, the predetermined number of primary packages include primary packages that are less than the nominal weight. However, since the average weight of the predetermined number of primary packages is equal to or greater than the nominal weight, the average weight of the predetermined number of primary packages to be packaged as the secondary package does not fall below the nominal weight. Thereby, the consumer who purchased the secondary package product does not suffer from a disadvantage.
  • the combination calculation unit accumulates a deviation between the combination weight obtained by combining the weights of the objects to be weighed and the nominal weight of the primary package, and the accumulated deviation. Accordingly, the target combination weight is set to the nominal weight or a weight less than the nominal weight, and the accumulated deviation is initialized for each predetermined number.
  • the average weight of the packaged product for the entire predetermined number is not less than the nominal weight while allowing the packaged product to fall below the nominal weight for every predetermined number of packaged products. Since the target combination weight is changed so that the combination calculation is performed, when the packed product is boxed or packed in a predetermined unit, the average weight of the predetermined number of packed products packed in the bag or packed is It will not be less than the nominal weight. Therefore, consumers who have purchased boxed packaging boxes or bagged packaging bags are not penalized.
  • the predetermined number of primary packaged products that are the secondary packaged products allows the weight of the primary packaged product to be less than the nominal weight, while Since the combination calculation is performed by changing the target combination weight so that the average weight of the primary package becomes equal to or greater than the nominal weight, the predetermined number of primary packages include the primary package lower than the nominal weight. Even if the product is included, the average weight of the entire predetermined number of primary packaged products, that is, the predetermined number of primary packaged products packaged as the secondary packaged product, does not fall below the nominal weight. Thereby, the consumer who purchased the secondary package product does not suffer from a disadvantage.
  • FIG. 1 is a schematic diagram of a weighing and packaging system according to an embodiment of the present invention.
  • FIG. 2 is a block diagram of the weighing and packaging system of FIG.
  • FIG. 3 is a diagram illustrating an example of a weight distribution for explaining an overview of the average system.
  • FIG. 4 is a flowchart used for explanation of weighing, packaging, and boxing of the weighing packaging system according to the embodiment of the present invention.
  • FIG. 5 is a flowchart used for explaining the combination calculation of the combination weigher used in the weighing packaging system according to the embodiment of the present invention.
  • FIG. 1 is a schematic diagram of a weighing and packaging system according to an embodiment of the present invention.
  • the weighing and packaging system of this embodiment includes a combination weigher 1, a packaging machine 2 which is a primary packaging machine for bagging an object to be weighed with the combination weigher 1, and a packaged product packaged by the packaging machine 2. And a boxing device 3 as a secondary packaging machine.
  • a center base (body) 9 is supported at the center of the apparatus by, for example, four frames (not shown).
  • a conical dispersion feeder 10 is provided above the center base 9 to disperse the objects to be weighed supplied from an external supply device (not shown) radially by vibration.
  • linear feeders 5 are provided for feeding an object to be weighed conveyed from the dispersion feeder 10 to each supply hopper 4 by vibration.
  • a plurality of supply hoppers 4 and weighing hoppers 6 are provided corresponding to each other, and are arranged around the center base body 9 along the circumference.
  • the dispersion feeder 10, the linear feeder 5, the supply hopper 4 and the weighing hopper 6 are attached to the center base 9, and the drive units thereof, that is, the vibration devices of the dispersion feeder 10 and the linear feeder 5, or the supply are provided in the center base 9.
  • the gate opening / closing devices of the hopper 4 and the weighing hopper 6 are accommodated.
  • Each weighing hopper 6 is attached with a load sensor 7 such as a load cell for measuring the weight of an object to be weighed in the weighing hopper 6, and the load sensor 7 is also housed in the center base 9 together with the drive unit.
  • a collecting chute 8 having a substantially inverted truncated cone shape is disposed below the plurality of weighing hoppers 6.
  • the packaging machine 2 is disposed below the combination scale 1, and the packaging machine 2 packs the objects to be weighed discharged from the collecting chute 8 in the same manner as before to produce a packaged product.
  • the boxing device 3 for packing a predetermined number of packages from the packaging machine 2 is disposed, and the boxing device 3 packs the packaged products in the same manner as in the past.
  • a packaging machine may be provided in which the packaged product from the packaging machine 2 is a small bag, and a predetermined number of the small bags are packed into a large bag.
  • FIG. 2 is a block diagram of the weighing and packaging system of this embodiment.
  • the combination weigher 1 includes a weighing unit 1a including the weighing hopper 6 and the load sensor 7, and an operation setting display unit 1b for performing various settings and displays such as a nominal weight as a target combination weight and an allowable minus error described later. And an arithmetic control unit 1c that controls each unit and has a function as a combination arithmetic unit 1d that performs a combination operation corresponding to an average system described later.
  • the arithmetic control unit 1c is composed mainly of a microcomputer, and includes a CPU and a memory for storing various data and control programs necessary for the control operation of the CPU.
  • the packaging machine 2 is selected by a combination operation of the combination weigher 1, and a packaging unit 2a that packs a combination of objects to be weighed discharged from the combination weigher 1 as a single package, and various kinds of bags
  • An operation setting display unit 2b that performs setting and display
  • a packaging control unit 2c that drives and controls the packaging unit 2a to pack the objects to be weighed and discharge the packaged products packed in the bag.
  • the boxing device 3 includes a boxing unit 3a for boxing the packaged product discharged from the packing machine 2, an operation setting display unit 3b for performing various settings and displays for boxing, and a boxing unit 3a by driving and controlling the boxing unit 3a. And a boxing control unit 3c for discharging the boxed box and discharging the boxed product.
  • the calculation control unit 1c of the combination weigher 1, the packaging control unit 2c of the packaging machine 2, and the boxing control unit 3c of the boxing device 3 communicate with each other in the execution of the flowcharts of FIGS. 1.
  • the operation timing of each of the packaging machine 2 and the boxing device 3 is controlled.
  • the first rule is that the average weight Wa of the packaged product is not less than the nominal weight NW of the packaged product for the lot produced as described above.
  • the second rule is that the percentage of packages with the weight of the first zone Z1 that is less than the first tolerance T1 below the nominal weight and greater than or equal to the second tolerance T2 below the first tolerance T1. Is a predetermined ratio, for example, less than 2.5%.
  • the third rule is that the weight of any package is not in the second zone Z2, which is less than the second tolerance T2.
  • T1 Nominal weight (NW)-Allowable negative error (TNE: Tolerable Negative Error)
  • T2 nominal weight (NW)-2 x allowable negative error (TNE) It is.
  • the first allowable value T1 is 99 g and the second allowable value T2 is 98 g.
  • step n1 shown in FIG. 4 the boxing device 3 gives a discharge instruction of the packaged product packed in the packaging machine 2.
  • the boxing device 3 gives this discharge command in order to finish packing a predetermined number of packages into a certain box in step n9 and pack it into the next box.
  • the packaging machine 2 stands by so that the packaged product can be discharged by the discharge command in step n1.
  • step n2 the packaging machine 2 in the standby state in step n1 clears the counter that counts the number of discharged objects to be weighed from the packaging machine 2, and prepares to start the combination calculation corresponding to the next box.
  • An initialization signal is output to the combination scale 1.
  • step n3 the combination weigher 1 clears the memory for storing the cumulative deviation weight, which will be described later, and stores the number of memories in the first zone Z1 for storing the number of packages present in the first zone Z1 in FIG. Clear. Thereby, the combination weigher 1 is initialized.
  • step n3 When the initialization of the combination weigher 1 is completed at step n3, the process proceeds to step n4.
  • the cumulative deviation weight and the number of first zones Z1 will be described later based on the flowchart of FIG.
  • step n4 the packaging machine 2 issues an instruction to discharge the object to be measured to the combination weigher 1.
  • step n5 the combination weigher 1 executes the combination calculation of the objects to be weighed by the average system in response to the discharge command from the packaging machine 2 in step n4.
  • the combination of the objects to be weighed selected by the combination operation is discharged from the combination scale 1, and the discharged objects to be weighed are discharged.
  • the combination is packed in the packaging machine 2, packed as a single package, and discharged.
  • the predetermined number of the package is packed in a single box in the boxing device 3.
  • the average weight of the packaged product is not less than the nominal weight of the packaged product, the packaged product having the weight of the first zone AZ1 is less than a predetermined ratio, and the packaged product having the weight of the second zone Z2 is
  • the combination calculation is performed by changing the target combination weight so that it does not exist. That is, the combination operation is performed so as to satisfy the average system even in the box unit of the boxing device 3 for packing the packaged goods from the packaging machine 2.
  • step n6 the packaging machine 2 discharges the packaged product packed with the objects to be measured discharged from the combination weigher 1 to the boxing device 3.
  • the boxing device 3 packs the packaged product discharged from the packaging machine 2.
  • step n7 the packaging machine 2 counts the number of discharges discharged to the boxing device 3, that is, the number of discharged packaged products.
  • the reason why the number of packages is counted here is to set the number of packages to be packed in one box by the boxing device 3 to a predetermined number.
  • step n8 if the number of discharged packaging products counted by the packaging machine 2 is less than the predetermined number, the process returns to step n4, and the packaging machine 2 instructs the combination weigher 1 to discharge the object to be weighed for the next packaging. I do.
  • steps n4 to n8 are repeated, and when the packaging machine 2 determines that the predetermined number of discharged packages has been reached in step n8, it communicates to that effect to the boxing device 3.
  • step n9 since the number of the packaged products discharged from the packaging machine 2 has reached a predetermined number, the boxing device 3 sends out the packaging box packed with the predetermined number of packaged products, replaces it with a new box, and returns to step n1.
  • the average weight of a predetermined number of packages packed in one box may be equal to or greater than the nominal weight of the packaged product by the combination calculation by the average system in the combination scale 1 in step n5.
  • the package with the weight of the first zone Z1 is less than a predetermined ratio, and the package with the weight of the second zone Z2 does not exist.
  • step n5 the combination calculation by the average system of the combination weigher 1 in step n5 will be described based on the flowchart of FIG.
  • the accumulated deviation weight which is the accumulated value of the deviation between the combined weight of the weighing object discharged from the weighing hopper 6 selected by the combination calculation and the nominal weight, defines the first allowable value T1. It is determined whether or not it is less than an allowable minus error (TNEE).
  • the cumulative deviation weight is less than the tolerance minus error (TNEE) that defines the first tolerance value T1
  • TEE tolerance minus error
  • selecting an object combination that is less than the nominal weight causes the average weight to fall below the nominal weight. Therefore, the combination of the objects to be weighed less than the nominal weight cannot be selected, and the nominal weight is set as the target combination weight (step n12), and the combination calculation is executed (step n13). Therefore, in this combination calculation, a combination of objects to be weighed in a predetermined weight range equal to or greater than the nominal weight (target combination weight) is selected, and the selected combination of objects to be weighed is discharged to the packaging machine 2.
  • TEE tolerance minus error
  • a deviation is calculated by subtracting the nominal weight from the combined weight of the discharged objects to be weighed (step n14), and the calculated deviation is added to the accumulated deviation weight to be a new accumulated deviation weight (step n15).
  • step n14 determines whether or not the deviation calculated in step n14 is less than a negative allowable minus error (TNE), that is, the combination weight selected in step n13 is greater than or equal to the second allowable value T2. It is determined whether or not it exists in the first zone Z1 less than the first allowable value T1 (step n16), and when it exists, 1 is added to the number of the first zones Z1 to create a new first zone. The process ends as the number of Z1 (step n17), and ends when it does not exist.
  • TNE negative allowable minus error
  • step n11 when the accumulated deviation weight is not less than the allowable minus error (TNE) that defines the first allowable value T1, the allowable negative error (T.N.) that defines the second allowable value T2. N.E.) is judged (step n18), and if it is more than twice the allowable minus error (T.N.E.), the measurement subject to be the first zone Z1. Even if a combination of objects is selected, the average weight is equal to or greater than the nominal weight. Therefore, it is determined whether or not the number of first zones Z1 is equal to or greater than a predetermined number corresponding to an allowable predetermined ratio (step n19). ).
  • the combination of the objects to be weighed that become the first zones Z1 cannot be selected any more.
  • the combination of objects to be weighed as the first zone Z1 can be selected, so that twice the allowable minus error (TNE) from the nominal weight.
  • TNE allowable minus error
  • the subtracted second allowable value T2 is set as a target combination weight (step n20), and the process proceeds to step n13 to perform combination calculation. Therefore, in this combination calculation, a combination of objects to be weighed within a predetermined weight range equal to or greater than the second allowable value T2 (target combination weight) is selected.
  • step n18 when the accumulated deviation weight is not more than twice the allowable minus error (TNEE) that defines the second allowable value T2, or in step n19, the first zone
  • TNE allowable minus error
  • the subtracted first allowable value T1 is set as the target combination weight (step n21), and the process proceeds to step n13 to perform combination calculation. Therefore, in this combination calculation, a combination of objects to be weighed within a predetermined weight range equal to or greater than the first allowable value T1 (target combination weight) is selected.
  • the average weight of a predetermined number of packages packed in one box can be equal to or greater than the nominal weight of the package, and
  • the package with the weight of one zone Z1 may be less than a predetermined ratio, and the package with the weight of the second zone Z2 may be absent.
  • the target combination weight is changed according to the accumulated deviation weight, and the combination calculation is performed.
  • the average weight of a certain number of packages packed in a single box can exceed the nominal weight, and a predetermined number of packages can be packed in countries and regions where the average system is used.
  • a consumer who purchases the packaging box can purchase the packaging box without incurring any disadvantages even in the combination calculation by the average system.
  • the combination weigher 1, the packaging machine 2 and the boxing device 3 communicate with each other to control the operation.
  • the combination weighing machine, the packaging machine and the boxing device 3 You may make it control by providing the control part which controls the whole.
  • the packaging machine 2 packs the objects to be weighed discharged from the combination weigher 1, but it may be packed in a box.

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Abstract

A combination calculation unit for a combination scale, that, at each prescribed number of packaged items being packaged by a packaging machine, permits the weight of a packaged item among the prescribed number of packaged items to be less that the nominal weight therefor, changes the target combined weight such that the average weight of the prescribed number of packaged items is at least the nominal weight, and performs combination calculations.

Description

組合せ秤及び計量包装システムCombination weigher and weighing packaging system
　本発明は、菓子類などの被計量物を計量する組合せ秤及びそれを用いた計量包装システムに関する。 The present invention relates to a combination weigher for weighing an object to be weighed such as confectionery and a weighing packaging system using the same.
　従来、組合せ秤で計量された被計量物は、例えば、包装機に投入されて袋詰めされるのが一般的である。 Conventionally, an object to be weighed with a combination weigher is generally put into a packaging machine and packed in a bag, for example.
　かかる組合せ秤は、供給される被計量物を計量する複数の計量ホッパを備えており、複数の計量ホッパで計量した各被計量物の重量値を種々に組合せ、組合せた合計の重量である組合せ重量が、目標組合せ重量以上の許容重量範囲の組合せを選択し、選択した組合せの計量ホッパから被計量物を排出し、排出した被計量物を、組合せ秤の下方に配置された包装機に投入して袋詰めするようにしている。 Such a combination weigher has a plurality of weighing hoppers for weighing the objects to be supplied, and various combinations of the weight values of the objects to be weighed by the plurality of weighing hoppers are combined to give a total weight. Select a combination with an allowable weight range that is equal to or greater than the target combination weight, discharge the object to be weighed from the weighing hopper of the selected combination, and put the discharged object to be packed into the packaging machine located below the combination weigher And I am trying to pack it in a bag.
　組合せ秤では、目標組合せ重量以上の被計量物の組合せを選択するので、精確に計量されている限り、包装機で袋詰めされた包装品の内容物の重量が、目標組合せ重量を下回ることがない。 The combination weigher selects a combination of objects to be weighed that is equal to or greater than the target combination weight, so that the weight of the packaged product packaged by the packaging machine may be less than the target combination weight as long as it is accurately weighed. Absent.
　包装品の内容物の重量は、いわゆる、公称重量として包装品のラベル等に表示されるが、市場に出回る包装品は、その内容物の重量が、前記公称重量を下回ることがないように計量包装されている。なお、以下の説明では、包装品の重量とは、包装品の内容物の重量をいう。 The weight of the contents of the package is displayed on the label of the package as a so-called nominal weight, but the packaged goods on the market are weighed so that the weight of the contents does not fall below the nominal weight. It is packaged. In the following description, the weight of the packaged product means the weight of the contents of the packaged product.
　ところで、ヨーロッパの国や地域などでは、包装品を生産する場合に、生産したロットについての包装品の平均重量が、公称重量以上であれば、生産したロットの一部に、公称重量を下回る包装品が含まれてもよいとする、いわゆる、アベレージシステムが採用されている。 By the way, in European countries and regions, when producing a packaged product, if the average weight of the packaged product for the produced lot is greater than the nominal weight, the packaged product will fall below the nominal weight in some of the produced lots. A so-called average system is adopted in which products may be included.
　このアベレージシステムでは、包装品をロット生産する場合に、いずれのロットにおいても、そのロットの包装品の平均重量（ロットを構成する多数個の包装品の総重量を、包装品の個数で割った値）が、包装品の公称重量以上であれば、公称重量未満の所定重量範囲の包装品が所定の割合以下であれば、含まれてもよいとするものである。 In this average system, when producing a lot of packaged goods, the average weight of the packaged goods in each lot (the total weight of a large number of packaged goods constituting the lot divided by the number of packaged goods) If the value) is equal to or greater than the nominal weight of the packaged product, it may be included if a packaged product within a predetermined weight range less than the nominal weight is equal to or less than a predetermined ratio.
　かかるアベレージシステムでは、包装品の生産の開始時には、公称重量以上の包装品を生産し、生産した包装品の全体の平均重量が、公称重量を超えるようにしておき、その後、生産した包装品の全体の平均重量が、公称重量未満とならない範囲で、公称重量を下回る所定重量範囲の包装品を、所定の割合以下となるように生産するものであり、生産した包装品の平均重量の変化に応じて、公称重量以上、あるいは、公称重量未満の包装品を生産するものである。 In such an average system, at the start of production of a packaged product, a packaged product exceeding the nominal weight is produced so that the total average weight of the produced packaged product exceeds the nominal weight. In the range where the overall average weight does not become less than the nominal weight, the packaged product in the specified weight range that is lower than the nominal weight is produced so as to be a predetermined ratio or less. Accordingly, a packaged product having a nominal weight or more or less than the nominal weight is produced.
　本件出願人は、かかるアベレージシステムにも対応できる組合せ秤を既に提案している（特許文献１参照）。 The applicant of the present application has already proposed a combination weigher that can cope with such an average system (see Patent Document 1).
特開昭６１－１３７０２０号公報JP-A-61-137020
　しかしながら、上記組合せ秤では、包装機で袋詰めされた包装品の所定個数を、前記包装機の後段で、例えば箱詰めするような場合には、次のような課題がある。 However, the combination weigher has the following problems when a predetermined number of packages packed in a packaging machine is boxed, for example, in a subsequent stage of the packaging machine.
　すなわち、アベレージシステムでは、上述のように、生産したロットの包装品の平均重量が、包装品の公称重量以上であれば、そのロットに、公称重量未満の所定重量範囲の包装品が所定の割合以下であれば含まれてもよいので、例えば、或るロットの生産中において、それまでに生産した包装品の全体についての平均重量が、包装品の公称重量をかなり上回っているような場合には、組合せ秤は、複数回連続して公称重量未満となる被計量物の組合せを選択して排出する、したがって、組合せ秤の後段の包装機は、複数回連続して公称重量を下回る包装品を生産することがある。 That is, in the average system, as described above, if the average weight of the packaged product of the produced lot is equal to or greater than the nominal weight of the packaged product, the packaged product in the predetermined weight range less than the nominal weight is included in the lot in a predetermined ratio. The following may be included, for example, during the production of a lot, when the average weight of the whole package produced so far is significantly higher than the nominal weight of the package: The combination weigher selects and discharges a combination of objects to be weighed that are less than the nominal weight several times in succession. May produce.
　このように、公称重量未満の包装品が連続して複数個生産されると、これら複数個の公称重量未満の包装品を含む所定個数の包装品が、箱詰めされることになり、その箱詰めされた包装箱の所定個数の包装品の平均重量が、包装品の公称重量を下回る、すなわち、箱詰めされた包装箱の単位では、包装品の平均重量が、包装品の公称重量を下回ることになる。すなわち、それまで生産された包装品の全体についての平均重量は、包装品の公称重量以上であっても、偶々、或る箱に詰められる所定個数の包装品については、その平均重量が、包装品の公称重量を下回ることが生じ、このようなときには、前記或る箱を購入した消費者に不利益を与えることになる。 In this way, when a plurality of packages less than the nominal weight are continuously produced, a predetermined number of packages including the plurality of packages less than the nominal weight will be boxed. The average weight of a given number of packages in a package is less than the nominal weight of the package, that is, in a boxed package box, the average weight of the package will be less than the nominal weight of the package . In other words, even if the average weight of the whole packaged product so far is equal to or greater than the nominal weight of the packaged product, the average weight of a given number of packages packed in a certain box will be This can result in less than the nominal weight of the item, which would be detrimental to the consumer who purchased the box.
　本発明は、上述の課題に鑑みてなされたものであって、アベレージシステムに対応できると共に、包装品の所定個数を箱詰めや袋詰めするような場合に、箱や袋単位での前記包装品の平均重量が、包装品の公称重量を下回らないようにした組合せ秤、及び、それを用いた計量包装システムを提供することを目的とする。 The present invention has been made in view of the above-described problems, and can cope with an average system, and in the case where a predetermined number of packages are packed in a box or in a bag, It is an object of the present invention to provide a combination weigher in which an average weight does not fall below a nominal weight of a packaged product, and a weighing and packaging system using the combination weigher.
　上記目的を達成するために、本発明では、次のように構成している。 In order to achieve the above object, the present invention is configured as follows.
  （１）本発明の組合せ秤は、複数の計量部でそれぞれ計量される被計量物の重量を組合せた組合せ重量が、目標組合せ重量以上となる被計量物の組合せを選択する組合せ演算部を備え、該組合せ演算部で選択された前記被計量物の組合せを包装機へ排出し、排出される前記被計量物の組合せが、前記包装機によって包装されて１個の包装品とされる組合せ秤であって、
　前記組合せ演算部は、前記包装機で包装される前記包装品の所定個数毎に、前記所定個数の包装品中に、該包装品の公称重量未満の重量の包装品が含まれることを許容しつつ、前記所定個数の前記包装品の平均重量が、前記公称重量以上となるように前記目標組合せ重量を変更して前記組合せ演算を行うものである。 (1) The combination weigher of the present invention includes a combination operation unit that selects a combination of objects to be weighed in which a combination weight obtained by combining the weights of objects to be weighed by a plurality of weighing units is equal to or greater than a target combination weight. The combination of the objects to be weighed selected by the combination calculation unit is discharged to a packaging machine, and the combination of the objects to be weighed is packaged by the packaging machine into one packaged product. Because
The combination calculation unit allows, for each predetermined number of the packaged products packaged by the packaging machine, the predetermined number of packaged products to include a packaged product having a weight less than the nominal weight of the packaged product. However, the combination calculation is performed by changing the target combination weight so that the average weight of the predetermined number of the packaged products is equal to or greater than the nominal weight.
　前記包装機は、組合せ秤から排出される被計量物の組合せを、袋詰めや箱詰めなどして1個の包装品とするものである。 The packaging machine is to pack a combination of objects to be weighed from a combination weigher into a single packaged product by bagging or boxing.
　本発明によると、包装品の所定個数毎に、包装品の重量が、その公称重量未満となることを許容しつつ、前記所定個数の前記包装品の平均重量が、前記公称重量以上となるように前記目標組合せ重量を変更して組合せ演算を行うので、所定個数の包装品の中には、公称重量を下回る包装品が含まれていても、所定個数の包装品の平均重量が、前記公称重量以上となるので、包装機の後段で、包装品の所定個数を、箱詰めや袋詰めするような場合に、箱詰めや袋詰めされた所定個数の包装品の平均重量が、公称重量を下回ることがなく、したがって、箱詰めされた包装箱や袋詰めされた包装袋を購入した消費者が不利益を被ることがない。 According to the present invention, for each predetermined number of packaged products, the weight of the packaged product is allowed to be less than the nominal weight, and the average weight of the predetermined number of packaged products is equal to or greater than the nominal weight. The target combination weight is changed to perform the combination calculation, so that the average weight of the predetermined number of packaged products is the nominal weight even if the predetermined number of packaged products include packages less than the nominal weight. When the specified number of packages is packed in a box or bag at the latter stage of the packaging machine, the average weight of the specified number of packages packed in a box or bag must be lower than the nominal weight. Therefore, consumers who have purchased boxed packaging boxes or bagged packaging bags are not penalized.
　（２）本発明の好ましい実施態様では、前記組合せ演算部は、前記被計量物の重量を組合せた前記組合せ重量と前記公称重量との偏差を累積し、累積した偏差に応じて前記目標組合せ重量を、前記公称重量又は前記公称重量未満の重量とすると共に、前記累積した偏差を前記所定個数毎に初期化する。 (2) In a preferred embodiment of the present invention, the combination calculation unit accumulates a deviation between the combination weight obtained by combining the weights of the objects to be weighed and the nominal weight, and the target combination weight according to the accumulated deviation. Is the nominal weight or a weight less than the nominal weight, and the accumulated deviation is initialized for each predetermined number.
　この実施態様によると、選択した被計量物の重量を組合せた組合せ重量が公称重量を上回り、累積した偏差が大きくなった場合には、公称重量未満となる被計量物の組合せを選択することができるので、目標組合せ重量を、公称重量未満の重量とし、逆に、選択した被計量物の重量を組合せた組合せ重量が公称重量を下回り、累積した偏差が小さくなった場合には、公称重量未満となる被計量物の組合せ重量を選択することができないので、目標組合せ重量を、公称重量とした組合せ演算を行い、これによって、所定個数の包装品の平均重量を、公称重量以上とすることができる。 According to this embodiment, when the combined weight of the weights of the selected objects to be weighed exceeds the nominal weight and the accumulated deviation increases, the combination of objects to be weighed that is less than the nominal weight can be selected. Therefore, if the target combination weight is less than the nominal weight and conversely, the combination weight combining the weight of the selected objects to be measured is less than the nominal weight and the accumulated deviation becomes smaller, the less than the nominal weight. Since the combination weight of the objects to be weighed cannot be selected, the combination calculation with the target combination weight as the nominal weight is performed, so that the average weight of the predetermined number of packages can be made equal to or greater than the nominal weight. it can.
　（３）本発明の好ましい実施態様では、前記組合せ演算部は、前記所定個数の包装品中に、前記公称重量を下回る第１の許容値未満であって、かつ、該第１の許容値を下回る第２の許容値以上である重量の前記包装品の含まれる割合が、所定の割合未満となるように、かつ、前記第２の許容値未満の重量の前記包装品が含まれないように、前記目標組合せ重量を変更する。 (3) In a preferred embodiment of the present invention, the combination calculation unit is less than a first allowable value lower than the nominal weight and includes the first allowable value in the predetermined number of packages. The ratio of the packaged product having a weight that is equal to or greater than the second allowable value is less than a predetermined ratio, and the packaged product having a weight less than the second allowable value is not included. The target combination weight is changed.
　第１，第２の許容値及び所定の割合は、ヨーロッパの国や地域などで採用されているアベレージシステムで規定されている値や割合とするのが好ましい。 The first and second permissible values and the predetermined ratio are preferably values and ratios stipulated by the average system employed in European countries and regions.
　この実施態様によると、所定個数毎の包装品についても、アベレージシステムを満足することができる。 According to this embodiment, it is possible to satisfy the average system even for a predetermined number of packages.
　（４）本発明の他の実施態様では、前記第１の許容値が、前記公称重量から所定の許容誤差を減算した値であり、前記第２の許容値が、前記公称重量から前記所定の許容誤差の２倍を減算した値であり、前記所定個数、前記所定の許容誤差、前記所定の割合を設定する設定部を備える。 (4) In another embodiment of the present invention, the first allowable value is a value obtained by subtracting a predetermined allowable error from the nominal weight, and the second allowable value is the predetermined weight from the nominal weight. This is a value obtained by subtracting twice the allowable error, and includes a setting unit for setting the predetermined number, the predetermined allowable error, and the predetermined ratio.
　所定の許容誤差は、ヨーロッパの国や地域などで採用されているアベレージシステムで規定されている値とするのが好ましい。 It is preferable that the predetermined tolerance is a value defined by the average system adopted in European countries and regions.
　この実施態様によると、組合せ演算部は、設定部から設定された所定個数、所定の許容誤差、所定の割合に基づいて、目標組合せ重量を変更して組合せ演算を行い、所定個数の包装品の平均重量が、公称重量以上であって、所定個数の包装品中に、公称重量を下回る第１の許容値未満であって、かつ、該第１の許容値を下回る第２の許容値以上である重量の前記包装品の含まれる割合が、所定の割合未満となり、かつ、前記第２の許容値未満の重量の前記包装品が含まれないように、被計量物の組合せを選択して包装機へ排出することができる。 According to this embodiment, the combination calculation unit performs the combination calculation by changing the target combination weight based on the predetermined number, the predetermined tolerance, and the predetermined ratio set by the setting unit, The average weight is greater than or equal to the nominal weight and less than a first tolerance below the nominal weight and greater than or equal to a second tolerance below the first tolerance in a predetermined number of packages. Select and package a combination of objects to be weighed so that the percentage of the packaged product with a certain weight is less than a predetermined ratio and does not include the packaged product with a weight less than the second allowable value. Can be discharged into the machine.
　（５）本発明の更に他の実施態様では、前記包装品を１次包装品とし、該１次包装品の前記所定個数が、前記包装機の後段で、２次包装品として包装される。 (5) In still another embodiment of the present invention, the packaged product is a primary packaged product, and the predetermined number of the primary packaged product is packaged as a secondary packaged product after the packaging machine.
　２次包装品は、１次包装品の所定個数を、箱詰めや袋詰めして包装された包装品であるが好ましい。 The secondary package product is preferably a package product in which a predetermined number of primary package products are packed in a box or bag.
　この実施態様によると、２次包装品として箱詰めや袋詰めされた所定個数の１次包装品の平均重量が、該１次包装品の公称重量未満となることがない。 According to this embodiment, the average weight of a predetermined number of primary packages packed and packaged as a secondary package does not become less than the nominal weight of the primary package.
　（６）本発明の計量包装システムは、複数の計量部でそれぞれ計量される被計量物の重量を組合せた組合せ重量が、目標組合せ重量以上となる被計量物の組合せを選択する組合せ演算部を備え、該組合せ演算部で選択された前記被計量物の組合せを排出する組合せ秤と、
　前記組合せ秤から排出される前記被計量物の組合せを包装して１個の１次包装品として排出する１次包装機と、
　前記１次包装機から排出される前記１次包装品の所定個数を包装して１個の２次包装品として排出する２次包装機とを備える計量包装システムであって、
　前記組合せ秤の前記組合せ演算部は、前記２次包装機で包装される前記所定個数の前記１次包装品中に、該1次包装品の公称重量未満の重量の1次包装品が含まれることを許容しつつ、前記所定個数の前記１次包装品の平均重量が、前記公称重量以上となるように前記目標組合せ重量を変更して前記組合せ演算を行うものである。 (6) The weighing and packaging system of the present invention includes a combination operation unit that selects a combination of objects to be weighed in which a combination weight obtained by combining the weights of objects to be weighed by a plurality of weighing units is equal to or greater than a target combination weight. A combination weigher that discharges the combination of the objects to be weighed selected by the combination calculation unit;
A primary packaging machine for packaging the combination of the objects to be weighed discharged from the combination weigher and discharging it as one primary package;
A measuring and packaging system including a secondary packaging machine that wraps a predetermined number of the primary packaging products discharged from the primary packaging machine and discharges the primary packaging products as one secondary packaging product,
The combination calculation unit of the combination weigher includes a primary package product having a weight less than a nominal weight of the primary package product in the predetermined number of the primary package products packaged by the secondary packaging machine. The combination calculation is performed by changing the target combination weight so that the average weight of the predetermined number of the primary package products is equal to or greater than the nominal weight.
　本発明によると、２次包装品とされる１次包装品の所定個数は、１次包装品の重量が、その公称重量未満となることを許容しつつ、前記所定個数の１次包装品の平均重量が、前記公称重量以上となるように前記目標組合せ重量を変更して組合せ演算を行うので、所定個数の１次包装品の中には、公称重量を下回る１次包装品が含まれていても、所定個数の１次包装品の平均重量は、公称重量以上となるので、２次包装品として包装される所定個数の１次包装品の平均重量が、公称重量を下回ることがない。これによって、２次包装品を購入した消費者が不利益を被ることがない。 According to the present invention, the predetermined number of the primary packaged products to be the secondary packaged product allows the weight of the primary packaged product to be less than its nominal weight, while the predetermined number of primary packaged products Since the combination calculation is performed by changing the target combination weight so that the average weight is equal to or greater than the nominal weight, the predetermined number of primary packages include primary packages that are less than the nominal weight. However, since the average weight of the predetermined number of primary packages is equal to or greater than the nominal weight, the average weight of the predetermined number of primary packages to be packaged as the secondary package does not fall below the nominal weight. Thereby, the consumer who purchased the secondary package product does not suffer from a disadvantage.
　（７）本発明の他の実施態様では、前記組合せ演算部は、前記被計量物の重量を組合せた前記組合せ重量と前記１次包装品の前記公称重量との偏差を累積し、累積した偏差に応じて前記目標組合せ重量を、前記公称重量又は前記公称重量未満の重量とすると共に、前記累積した偏差を前記所定個数毎に初期化する。 (7) In another embodiment of the present invention, the combination calculation unit accumulates a deviation between the combination weight obtained by combining the weights of the objects to be weighed and the nominal weight of the primary package, and the accumulated deviation. Accordingly, the target combination weight is set to the nominal weight or a weight less than the nominal weight, and the accumulated deviation is initialized for each predetermined number.
　この実施態様によると、組合せ秤では、選択した被計量物の重量を組合せた組合せ重量が公称重量を上回り、累積した偏差が大きくなった場合には、公称重量未満となる被計量物の組合せを選択することができるので、目標組合せ重量を、公称重量未満の重量とし、逆に、選択した被計量物の重量を組合せた組合せ重量が公称重量を下回り、累積した偏差が小さくなった場合には、公称重量未満となる被計量物の組合せ重量を選択することができないので、目標組合せ重量を、公称重量とした組合せ演算を行い、これによって、1次包装機で包装される所定個数の１次包装品、すなわち、２次包装機で包装される１次包装品の平均重量を、公称重量以上とすることができる。 According to this embodiment, in the combination weigher, the combination weight of the selected objects to be weighed exceeds the nominal weight, and when the accumulated deviation becomes large, the combination of the objects to be weighed becomes less than the nominal weight. If the target combination weight is less than the nominal weight, and the combined weight of the selected object weight is less than the nominal weight and the accumulated deviation is smaller, Since the combination weight of the objects to be weighed that is less than the nominal weight cannot be selected, the combination calculation is performed with the target combination weight as the nominal weight. The average weight of the packaged product, that is, the primary packaged product packaged by the secondary packaging machine can be set to be equal to or greater than the nominal weight.
　本発明の組合せ秤によれば、包装品の所定個数毎に、公称重量を下回る包装品が含まれるのを許容しつつ、前記所定個数の全体についての包装品の平均重量は、公称重量以上となるように目標組合せ重量を変更して組合せ演算を行うので、包装品を所定個数単位で箱詰めや袋詰めするような場合には、箱詰めや袋詰めされた前記所定個数の包装品の平均重量が公称重量未満となることがない。したがって、箱詰めされた包装箱や袋詰めされた包装袋を購入した消費者が不利益を被ることがない。 According to the combination weigher of the present invention, the average weight of the packaged product for the entire predetermined number is not less than the nominal weight while allowing the packaged product to fall below the nominal weight for every predetermined number of packaged products. Since the target combination weight is changed so that the combination calculation is performed, when the packed product is boxed or packed in a predetermined unit, the average weight of the predetermined number of packed products packed in the bag or packed is It will not be less than the nominal weight. Therefore, consumers who have purchased boxed packaging boxes or bagged packaging bags are not penalized.
　本発明の計量包装システムによれば、２次包装品とされる１次包装品の所定個数は、１次包装品の重量が、その公称重量未満となることを許容しつつ、前記所定個数の１次包装品の平均重量が、前記公称重量以上となるように前記目標組合せ重量を変更して組合せ演算を行うので、所定個数の１次包装品の中には、公称重量を下回る１次包装品が含まれていても、所定個数の１次包装品の全体、すなわち、２次包装品として包装される所定個数の１次包装品の平均重量が、公称重量を下回ることがない。これによって、２次包装品を購入した消費者が不利益を被ることがない。 According to the weighing and packaging system of the present invention, the predetermined number of primary packaged products that are the secondary packaged products allows the weight of the primary packaged product to be less than the nominal weight, while Since the combination calculation is performed by changing the target combination weight so that the average weight of the primary package becomes equal to or greater than the nominal weight, the predetermined number of primary packages include the primary package lower than the nominal weight. Even if the product is included, the average weight of the entire predetermined number of primary packaged products, that is, the predetermined number of primary packaged products packaged as the secondary packaged product, does not fall below the nominal weight. Thereby, the consumer who purchased the secondary package product does not suffer from a disadvantage.
図１は、本発明の一実施形態に係る計量包装システムの概略模式図である。FIG. 1 is a schematic diagram of a weighing and packaging system according to an embodiment of the present invention. 図２は、図１の計量包装システムのブロック図である。FIG. 2 is a block diagram of the weighing and packaging system of FIG. 図３は、アベレージジステムの概要を説明するための重量分布の一例を示す図である。FIG. 3 is a diagram illustrating an example of a weight distribution for explaining an overview of the average system. 図４は、本発明の実施形態に係る計量包装システムの計量、包装、および箱詰めの説明に用いるフローチャートである。FIG. 4 is a flowchart used for explanation of weighing, packaging, and boxing of the weighing packaging system according to the embodiment of the present invention. 図５は、本発明の実施形態に係る計量包装システムで用いる組合せ秤の組合せ演算の説明に用いるフローチャートである。FIG. 5 is a flowchart used for explaining the combination calculation of the combination weigher used in the weighing packaging system according to the embodiment of the present invention.
　以下、添付した図面を参照して、本発明の実施形態に係る組合せ秤及び計量包装システムを説明する。 Hereinafter, a combination weigher and a weighing packaging system according to an embodiment of the present invention will be described with reference to the accompanying drawings.
　図１は、本発明の一実施形態に係る計量包装システムの概略模式図である。 FIG. 1 is a schematic diagram of a weighing and packaging system according to an embodiment of the present invention.
　この実施形態の計量包装システムは、組合せ秤１と、組合せ秤１で計量された被計量物を袋詰めする１次包装機である包装機２と、この包装機２で袋詰めされた包装品を箱詰めする２次包装機としての箱詰め装置３とを備える。 The weighing and packaging system of this embodiment includes a combination weigher 1, a packaging machine 2 which is a primary packaging machine for bagging an object to be weighed with the combination weigher 1, and a packaged product packaged by the packaging machine 2. And a boxing device 3 as a secondary packaging machine.
　組合せ秤１は、装置中央にセンター基体（ボディ）９が、例えば４本のフレーム（図示せず）によって支持されている。このセンター基体９の上部には、外部の供給装置（図示せず）から供給される被計量物を振動によって放射状に分散させる円錐形の分散フィーダ１０が設けられている。分散フィーダ１０の周囲には、分散フィーダ１０から搬送される被計量物を振動によって各供給ホッパ４に送り込むためのリニアフィーダ５が設けられている。リニアフィーダ５の下方には、複数の供給ホッパ４、計量ホッパ６がそれぞれ対応して設けられ、センター基体９の周囲に円周上に沿って配置されている。 In the combination weigher 1, a center base (body) 9 is supported at the center of the apparatus by, for example, four frames (not shown). A conical dispersion feeder 10 is provided above the center base 9 to disperse the objects to be weighed supplied from an external supply device (not shown) radially by vibration. Around the dispersion feeder 10, linear feeders 5 are provided for feeding an object to be weighed conveyed from the dispersion feeder 10 to each supply hopper 4 by vibration. Below the linear feeder 5, a plurality of supply hoppers 4 and weighing hoppers 6 are provided corresponding to each other, and are arranged around the center base body 9 along the circumference.
　分散フィーダ１０、リニアフィーダ５、供給ホッパ４及び計量ホッパ６は、センター基体９に取り付けられ、センター基体９内にそれらの駆動ユニット、すなわち、分散フィーダ１０及びリニアフィーダ５の振動装置、あるいは、供給ホッパ４及び計量ホッパ６のゲート開閉装置等が収納されている。また、各計量ホッパ６には、計量ホッパ６内の被計量物の重量を計測するロードセル等の荷重センサ７が取り付けられ、荷重センサ７もセンター基体９内に駆動ユニットとともに収納されている。複数の計量ホッパ６の下方には、略逆円錐台形状の集合シュート８が配設されている。 The dispersion feeder 10, the linear feeder 5, the supply hopper 4 and the weighing hopper 6 are attached to the center base 9, and the drive units thereof, that is, the vibration devices of the dispersion feeder 10 and the linear feeder 5, or the supply are provided in the center base 9. The gate opening / closing devices of the hopper 4 and the weighing hopper 6 are accommodated. Each weighing hopper 6 is attached with a load sensor 7 such as a load cell for measuring the weight of an object to be weighed in the weighing hopper 6, and the load sensor 7 is also housed in the center base 9 together with the drive unit. A collecting chute 8 having a substantially inverted truncated cone shape is disposed below the plurality of weighing hoppers 6.
　この組合せ秤１の下方には、上記包装機２が配設されており、包装機２は、集合シュート８から排出される被計量物を従来と同様に袋詰めして包装品を生産する。 The packaging machine 2 is disposed below the combination scale 1, and the packaging machine 2 packs the objects to be weighed discharged from the collecting chute 8 in the same manner as before to produce a packaged product.
　この包装機２の後段には、包装機２からの包装品の所定個数を箱詰めする上記箱詰め装置３が配設されており、この箱詰め装置３は、従来と同様に包装品を箱詰めする。なお、箱詰め装置３に代えて、包装機２からの包装品を小袋とし、この小袋の所定個数を袋詰めして大袋とする包装機を設けてもよい。 In the subsequent stage of the packaging machine 2, the boxing device 3 for packing a predetermined number of packages from the packaging machine 2 is disposed, and the boxing device 3 packs the packaged products in the same manner as in the past. Instead of the boxing device 3, a packaging machine may be provided in which the packaged product from the packaging machine 2 is a small bag, and a predetermined number of the small bags are packed into a large bag.
　図２は、この実施形態の計量包装システムのブロック図である。 FIG. 2 is a block diagram of the weighing and packaging system of this embodiment.
　組合せ秤１は、上記の計量ホッパ６及び荷重センサ７等をからなる計量部１ａと、目標組合せ重量となる公称重量や後述の許容マイナス誤差等の各種の設定及び表示を行う操作設定表示部１ｂと、後述のアベレージシステムに対応した組合せ演算を行う組合せ演算部１ｄとしての機能を有すると共に、各部を制御する演算制御部１ｃとを備える。演算制御部１ｃは、マイクロコンピュータを主体に構成され、ＣＰＵおよびこのＣＰＵの制御動作に必要な各種データおよび制御プログラムを記憶するメモリを具備する。 The combination weigher 1 includes a weighing unit 1a including the weighing hopper 6 and the load sensor 7, and an operation setting display unit 1b for performing various settings and displays such as a nominal weight as a target combination weight and an allowable minus error described later. And an arithmetic control unit 1c that controls each unit and has a function as a combination arithmetic unit 1d that performs a combination operation corresponding to an average system described later. The arithmetic control unit 1c is composed mainly of a microcomputer, and includes a CPU and a memory for storing various data and control programs necessary for the control operation of the CPU.
　包装機２は、組合せ秤１の組合せ演算によって選択され、組合せ秤１から排出される被計量物の組合せを、１個の包装品として袋詰めする包装部２ａと、袋詰めのための各種の設定及び表示を行う操作設定表示部２ｂと、包装部２ａを駆動制御して被計量物を袋詰めと共に、袋詰めされた包装品を排出させる包装制御部２ｃとを備える。 The packaging machine 2 is selected by a combination operation of the combination weigher 1, and a packaging unit 2a that packs a combination of objects to be weighed discharged from the combination weigher 1 as a single package, and various kinds of bags An operation setting display unit 2b that performs setting and display, and a packaging control unit 2c that drives and controls the packaging unit 2a to pack the objects to be weighed and discharge the packaged products packed in the bag.
　箱詰め装置３は、包装機２から排出された包装品を箱詰めする箱詰め部３ａと、箱詰めのための各種の設定及び表示を行う操作設定表示部３ｂと、箱詰め部３ａを駆動制御して包装機２から排出される包装品を箱詰めすると共に、箱詰めした箱を排出させる箱詰め制御部３ｃとを備える。 The boxing device 3 includes a boxing unit 3a for boxing the packaged product discharged from the packing machine 2, an operation setting display unit 3b for performing various settings and displays for boxing, and a boxing unit 3a by driving and controlling the boxing unit 3a. And a boxing control unit 3c for discharging the boxed box and discharging the boxed product.
　組合せ秤１の演算制御部１ｃ、包装機２の包装制御部２ｃ及び箱詰め装置３の箱詰め制御部３ｃは、後述の図４および図５のフローチャートの実行において、相互間で通信して、組合せ秤１、包装機２および箱詰め装置３それぞれの動作タイミングを制御するようになっている。 The calculation control unit 1c of the combination weigher 1, the packaging control unit 2c of the packaging machine 2, and the boxing control unit 3c of the boxing device 3 communicate with each other in the execution of the flowcharts of FIGS. 1. The operation timing of each of the packaging machine 2 and the boxing device 3 is controlled.
　ここで、この実施形態の動作説明に先立って、アベレージシステムの概要について、図３に基づいて更に説明する。 Here, prior to the description of the operation of this embodiment, the outline of the average system will be further described based on FIG.
　アベレージシステムでは、第１～第３の規則がある。 In the average system, there are first to third rules.
　第１の規則は、上述のように生産されるロットについて、包装品の平均重量Ｗａは、包装品の公称重量ＮＷ以上であること。第２の規則は、公称重量を下回る第１の許容値Ｔ１未満であって、第１の許容値Ｔ１を下回る第２の許容値Ｔ２以上である第１のゾーンＺ１の重量の包装品の割合が、所定の割合、例えば、２．５％未満であること。第３の規則は、いずれの包装品の重量も第２の許容値Ｔ２未満である第２のゾーンＺ２にないこと。 The first rule is that the average weight Wa of the packaged product is not less than the nominal weight NW of the packaged product for the lot produced as described above. The second rule is that the percentage of packages with the weight of the first zone Z1 that is less than the first tolerance T1 below the nominal weight and greater than or equal to the second tolerance T2 below the first tolerance T1. Is a predetermined ratio, for example, less than 2.5%. The third rule is that the weight of any package is not in the second zone Z2, which is less than the second tolerance T2.
　前記第１，第２の許容値Ｔ１，Ｔ２は、
Ｔ１＝公称重量（ＮＷ）－許容マイナス誤差（T.N.E.：Ｔolerable  Ｎegative 　Ｅrror）
Ｔ２＝公称重量（ＮＷ）－２×許容マイナス誤差（T.N.E.）
　である。 The first and second tolerance values T1, T2 are:
T1 = Nominal weight (NW)-Allowable negative error (TNE: Tolerable Negative Error)
T2 = nominal weight (NW)-2 x allowable negative error (TNE)
It is.
　例えば、包装品の公称重量を１００ｇ、所定の許容誤差としての許容マイナス誤差（T.N.E.）を１ｇとすると、第１の許容値Ｔ１は、９９ｇとなり、第２の許容値Ｔ２は、９８ｇとなる。 For example, if the nominal weight of the packaged product is 100 g and the allowable minus error (T.N.E.) as a predetermined allowable error is 1 g, the first allowable value T1 is 99 g and the second allowable value T2 is 98 g.
　次に、この実施形態の計量包装システムの動作を図４および図５のフローチャートに基づいて説明する。 Next, the operation of the weighing and packaging system of this embodiment will be described based on the flowcharts of FIGS.
　図４に示すステップｎ１において、箱詰め装置３は、包装機２に袋詰めされた包装品の排出命令を与える。箱詰め装置３がこの排出命令を与えるのは、ステップｎ９で或る箱に包装品の所定個数の箱詰めが終了し、次の箱に箱詰めするためである。包装機２は、ステップｎ１における排出命令により包装品を排出できるように待機する。 In step n1 shown in FIG. 4, the boxing device 3 gives a discharge instruction of the packaged product packed in the packaging machine 2. The boxing device 3 gives this discharge command in order to finish packing a predetermined number of packages into a certain box in step n9 and pack it into the next box. The packaging machine 2 stands by so that the packaged product can be discharged by the discharge command in step n1.
　ステップｎ２において、ステップｎ１で待機状態にある包装機２は、包装機２からの被計量物の排出数をカウントするカウンタをクリアすると共に、次の箱に対応する組合せ演算を開始させる準備として、組合せ秤１に初期化信号を出力する。 In step n2, the packaging machine 2 in the standby state in step n1 clears the counter that counts the number of discharged objects to be weighed from the packaging machine 2, and prepares to start the combination calculation corresponding to the next box. An initialization signal is output to the combination scale 1.
　ステップｎ３において、組合せ秤１は、後述の累積偏差重量を格納するメモリのクリアと、図３の第１のゾーンＺ１に存在する包装品の個数を格納する第１のゾーンＺ１の個数のメモリのクリアを行う。これにより組合せ秤１は初期化される。 In step n3, the combination weigher 1 clears the memory for storing the cumulative deviation weight, which will be described later, and stores the number of memories in the first zone Z1 for storing the number of packages present in the first zone Z1 in FIG. Clear. Thereby, the combination weigher 1 is initialized.
　ステップｎ３で組合せ秤１の初期化が完了すると、ステップｎ４に移行する。ここで、累積偏差重量及び第１のゾーンＺ１個数は、図５のフローチャートに基づいて後述するので、ここでは説明を略する。 When the initialization of the combination weigher 1 is completed at step n3, the process proceeds to step n4. Here, the cumulative deviation weight and the number of first zones Z1 will be described later based on the flowchart of FIG.
　ステップｎ４において、包装機２からは組合せ秤１に対して、被計量物の排出命令がなされる。 In step n4, the packaging machine 2 issues an instruction to discharge the object to be measured to the combination weigher 1.
　ステップｎ５において、組合せ秤１は、ステップｎ４における包装機２からの排出命令に応答して、アベレージシステムによる被計量物の組合せ演算を実行する。 In step n5, the combination weigher 1 executes the combination calculation of the objects to be weighed by the average system in response to the discharge command from the packaging machine 2 in step n4.
　この組合せ演算の詳細は、図５のフローチャートに基づいて説明するが、概略を説明すると、組合せ秤１から組合せ演算で選択された被計量物の組合せが排出され、その排出された被計量物の組合せが包装機２で袋詰めされて１個の包装品として包装されて排出され、この包装品の所定個数が箱詰め装置３において１つの箱に箱詰めされるまでの過程で、箱詰めされる所定個数の包装品の平均重量が、該包装品の公称重量以下とならず、第１のゾーンＡＺ１の重量の包装品が、所定の割合未満であって、第２のゾーンＺ２の重量の包装品が、存在しないように目標組合せ重量を変更して組合せ演算を行うものである。すなわち、包装機２からの包装品を、箱詰めする箱詰め装置３の箱単位においても、アベレージシステムを満足するように組合せ演算を行うものである。 The details of this combination calculation will be described with reference to the flowchart of FIG. 5. However, when the outline is described, the combination of the objects to be weighed selected by the combination operation is discharged from the combination scale 1, and the discharged objects to be weighed are discharged. The combination is packed in the packaging machine 2, packed as a single package, and discharged. The predetermined number of the package is packed in a single box in the boxing device 3. The average weight of the packaged product is not less than the nominal weight of the packaged product, the packaged product having the weight of the first zone AZ1 is less than a predetermined ratio, and the packaged product having the weight of the second zone Z2 is The combination calculation is performed by changing the target combination weight so that it does not exist. That is, the combination operation is performed so as to satisfy the average system even in the box unit of the boxing device 3 for packing the packaged goods from the packaging machine 2.
　この組合せ演算が終了すると、ステップｎ６に移行する。ステップｎ６において、包装機２は、組合せ秤１から排出される被計量物を袋詰めした包装品を箱詰め装置３に排出する。箱詰め装置３は、包装機２から排出された包装品を箱詰めする。 When this combination calculation is completed, the process proceeds to step n6. In step n <b> 6, the packaging machine 2 discharges the packaged product packed with the objects to be measured discharged from the combination weigher 1 to the boxing device 3. The boxing device 3 packs the packaged product discharged from the packaging machine 2.
　ステップｎ７において、包装機２は箱詰め装置３へ排出した排出数、すなわち、排出した包装品の個数をカウントする。ここで包装品をカウントするのは、箱詰め装置３で１つの箱に箱詰めする包装品の個数を所定個数とするためである。 In step n7, the packaging machine 2 counts the number of discharges discharged to the boxing device 3, that is, the number of discharged packaged products. The reason why the number of packages is counted here is to set the number of packages to be packed in one box by the boxing device 3 to a predetermined number.
　ステップｎ８において、包装機２がカウントした包装品の排出数が所定数未満であれば、ステップｎ４に戻り、包装機２は次の包装のために組合せ秤１に対して被計量物の排出命令を行う。 In step n8, if the number of discharged packaging products counted by the packaging machine 2 is less than the predetermined number, the process returns to step n4, and the packaging machine 2 instructs the combination weigher 1 to discharge the object to be weighed for the next packaging. I do.
　こうして、ステップｎ４～ｎ８が繰り返され、包装機２は、ステップｎ８で包装品の排出数の所定数に達したと判定すると、箱詰め装置３にその旨を通信する。 Thus, steps n4 to n8 are repeated, and when the packaging machine 2 determines that the predetermined number of discharged packages has been reached in step n8, it communicates to that effect to the boxing device 3.
　ステップｎ９において、箱詰め装置３は、包装機２から排出された包装品の個数が所定個数に達したので、包装品を所定個数箱詰めした包装箱を送り出し、新しい箱と入れ替え、ステップｎ１に戻る。 In step n9, since the number of the packaged products discharged from the packaging machine 2 has reached a predetermined number, the boxing device 3 sends out the packaging box packed with the predetermined number of packaged products, replaces it with a new box, and returns to step n1.
　こうして、テップｎ１～ｎ９を繰り返すことにより、包装品の所定個数を箱詰めした包装箱が排出される。 Thus, by repeating steps n1 to n9, a packaging box in which a predetermined number of packages are packed is discharged.
　以上の計量包装システムでは、ステップｎ５による組合せ秤１でのアベレージシステムによる組合せ演算により、１つの箱に箱詰めされた所定個数の包装品の平均重量を、該包装品の公称重量以上とすることができると共に、第１のゾーンＺ１の重量の包装品が、所定の割合未満であって、第２のゾーンＺ２の重量の包装品が、存在しないようにしている。 In the weighing and packaging system described above, the average weight of a predetermined number of packages packed in one box may be equal to or greater than the nominal weight of the packaged product by the combination calculation by the average system in the combination scale 1 in step n5. In addition, the package with the weight of the first zone Z1 is less than a predetermined ratio, and the package with the weight of the second zone Z2 does not exist.
　次に、上記ステップｎ５における組合せ秤１のアベレージシステムによる組合せ演算を図５のフローチャートに基づいて説明する。 Next, the combination calculation by the average system of the combination weigher 1 in step n5 will be described based on the flowchart of FIG.
　先ず、ステップｎ１１において、組合せ演算で選択された計量ホッパ６から排出した被計量物の組合せ重量と公称重量との偏差の累積値である累積偏差重量が、上述の第１の許容値Ｔ１を規定する許容マイナス誤差（Ｔ．Ｎ．Ｅ．）未満か否かを判断する。 First, in step n11, the accumulated deviation weight, which is the accumulated value of the deviation between the combined weight of the weighing object discharged from the weighing hopper 6 selected by the combination calculation and the nominal weight, defines the first allowable value T1. It is determined whether or not it is less than an allowable minus error (TNEE).
　累積偏差重量が、第１の許容値Ｔ１を規定する許容マイナス誤差（Ｔ．Ｎ．Ｅ．）未満であるときには、公称重量未満の被計量物の組合せを選択すると、平均重量が公称重量を下回ってしまうので、公称重量未満の被計量物の組合せを選択することはできず、公称重量を目標組合せ重量とし（ステップｎ１２）、組合せ演算を実行する（ステップｎ１３）。したがって、この組合せ演算では、公称重量（目標組合せ重量）以上の所定重量範囲の被計量物の組合せが選択されることになり、選択された被計量物の組合せが包装機２へ排出される。 If the cumulative deviation weight is less than the tolerance minus error (TNEE) that defines the first tolerance value T1, selecting an object combination that is less than the nominal weight causes the average weight to fall below the nominal weight. Therefore, the combination of the objects to be weighed less than the nominal weight cannot be selected, and the nominal weight is set as the target combination weight (step n12), and the combination calculation is executed (step n13). Therefore, in this combination calculation, a combination of objects to be weighed in a predetermined weight range equal to or greater than the nominal weight (target combination weight) is selected, and the selected combination of objects to be weighed is discharged to the packaging machine 2.
　次に排出した被計量物の組合せ重量から公称重量を減算して偏差を算出し（ステップｎ１４）、この算出した偏差を、累積偏差重量に加えて新たな累積偏差重量とする（ステップｎ１５）。 Next, a deviation is calculated by subtracting the nominal weight from the combined weight of the discharged objects to be weighed (step n14), and the calculated deviation is added to the accumulated deviation weight to be a new accumulated deviation weight (step n15).
　次に、ステップｎ１４で算出した偏差が、負の許容マイナス誤差（Ｔ．Ｎ．Ｅ．）未満であるか否か、すなわち、ステップｎ１３で選択した組合せ重量が、第２の許容値Ｔ２以上で第１の許容値Ｔ１未満の第１のゾーンＺ１に存在するか否かを判断し（ステップｎ１６）、存在するときには、第１のゾーンＺ１の個数に１を加算して新たな第１のゾーンＺ１の個数として終了し（ステップｎ１７）、存在しないときは終了する。 Next, whether or not the deviation calculated in step n14 is less than a negative allowable minus error (TNE), that is, the combination weight selected in step n13 is greater than or equal to the second allowable value T2. It is determined whether or not it exists in the first zone Z1 less than the first allowable value T1 (step n16), and when it exists, 1 is added to the number of the first zones Z1 to create a new first zone. The process ends as the number of Z1 (step n17), and ends when it does not exist.
　上述のステップｎ１１において、累積偏差重量が、第１の許容値Ｔ１を規定する許容マイナス誤差（Ｔ．Ｎ．Ｅ．）未満でないときには、第２の許容値Ｔ２を規定する許容マイナス誤差（Ｔ．Ｎ．Ｅ．）の２倍以上であるか否かを判断し（ステップｎ１８）、許容マイナス誤差（Ｔ．Ｎ．Ｅ．）の２倍以上であるときには、第１のゾーンＺ１となる被計量物の組合せを選択しても平均重量が公称重量以上となるので、第１のゾーンＺ１の個数が、許容される所定の割合に対応する所定数以上であるか否かを判断する（ステップｎ１９）。 In the above-described step n11, when the accumulated deviation weight is not less than the allowable minus error (TNE) that defines the first allowable value T1, the allowable negative error (T.N.) that defines the second allowable value T2. N.E.) is judged (step n18), and if it is more than twice the allowable minus error (T.N.E.), the measurement subject to be the first zone Z1. Even if a combination of objects is selected, the average weight is equal to or greater than the nominal weight. Therefore, it is determined whether or not the number of first zones Z1 is equal to or greater than a predetermined number corresponding to an allowable predetermined ratio (step n19). ).
　第１のゾーンＺ１の個数が、許容される所定数以上であるときには、それ以上第１のゾーンＺ１となる被計量物の組合せを選択することはできないので、ステップｎ２１に移行し、第１のゾーンＺ１の個数が、許容される所定数以上でないときには、第１のゾーンＺ１となる被計量物の組合せを選択できるので、公称重量から許容マイナス誤差（Ｔ．Ｎ．Ｅ．）の２倍を減算した第２の許容値Ｔ２を目標組合せ重量とし（ステップｎ２０）、ステップｎ１３に移行して組合せ演算を行う。したがって、この組合せ演算では、第２の許容値Ｔ２（目標組合せ重量）以上の所定重量範囲の被計量物の組合せが選択されることになる。 When the number of the first zones Z1 is equal to or larger than the predetermined number, the combination of the objects to be weighed that become the first zones Z1 cannot be selected any more. When the number of zones Z1 is not equal to or greater than the predetermined number, the combination of objects to be weighed as the first zone Z1 can be selected, so that twice the allowable minus error (TNE) from the nominal weight. The subtracted second allowable value T2 is set as a target combination weight (step n20), and the process proceeds to step n13 to perform combination calculation. Therefore, in this combination calculation, a combination of objects to be weighed within a predetermined weight range equal to or greater than the second allowable value T2 (target combination weight) is selected.
　上述のステップｎ１８において、累積偏差重量が、第２の許容値Ｔ２を規定する許容マイナス誤差（Ｔ．Ｎ．Ｅ．）の２倍以上でないとき、あるいは、上述のステップｎ１９において、第１のゾーンＺ１の個数が、許容される所定数以上であるときには、第１のゾーンＺ１となる被計量物の組合せを選択することはできないので、公称重量から許容マイナス誤差（Ｔ．Ｎ．Ｅ．）を減算した第１の許容値Ｔ１を目標組合せ重量とし（ステップｎ２１）、ステップｎ１３に移行して組合せ演算を行う。したがって、この組合せ演算では、第１の許容値Ｔ１（目標組合せ重量）以上の所定重量範囲の被計量物の組合せが選択されることになる。 In step n18, when the accumulated deviation weight is not more than twice the allowable minus error (TNEE) that defines the second allowable value T2, or in step n19, the first zone When the number of Z1 is equal to or greater than the predetermined number, the combination of objects to be weighed in the first zone Z1 cannot be selected, and therefore an allowable minus error (TNE) from the nominal weight. The subtracted first allowable value T1 is set as the target combination weight (step n21), and the process proceeds to step n13 to perform combination calculation. Therefore, in this combination calculation, a combination of objects to be weighed within a predetermined weight range equal to or greater than the first allowable value T1 (target combination weight) is selected.
　このように累積偏差重量に応じて目標組合せ重量を変化させることによって、１つの箱に箱詰めされる所定個数の包装品の平均重量を、該包装品の公称重量以上とすることができると共に、第１のゾーンＺ１の重量の包装品が、所定の割合未満であって、第２のゾーンＺ２の重量の包装品が、存在しないようにすることができる。 In this way, by changing the target combination weight according to the accumulated deviation weight, the average weight of a predetermined number of packages packed in one box can be equal to or greater than the nominal weight of the package, and The package with the weight of one zone Z1 may be less than a predetermined ratio, and the package with the weight of the second zone Z2 may be absent.
　以上説明したように、本実施形態によれば、１つの箱に箱詰めされる所定個数の包装品について、目標組合せ重量を、累積偏差重量に応じて変更して組合せ演算を行うので、公称重量未満の包装品を含むものの、１つの箱全体に箱詰めされた所定個数の包装品の平均重量を公称重量以上することができ、アベレージシステムが採用される国や地域において、所定個数の包装品を箱詰めした包装箱を購入する消費者は、アベレージシステムによる組合せ演算であっても、不利益を被ることなく、包装箱を購入できる。 As described above, according to the present embodiment, for a predetermined number of packages packed in one box, the target combination weight is changed according to the accumulated deviation weight, and the combination calculation is performed. However, the average weight of a certain number of packages packed in a single box can exceed the nominal weight, and a predetermined number of packages can be packed in countries and regions where the average system is used. A consumer who purchases the packaging box can purchase the packaging box without incurring any disadvantages even in the combination calculation by the average system.
　上述の実施形態では、組合せ秤１と、包装機２及び箱詰め装置３とがそれぞれ通信を行って動作を制御したけれども、本発明の他の実施形態として、組合せ秤、包装機及び箱詰め装置３の全体を制御する制御部を設けて制御するようにしてもよい。 In the above-described embodiment, the combination weigher 1, the packaging machine 2 and the boxing device 3 communicate with each other to control the operation. However, as another embodiment of the present invention, the combination weighing machine, the packaging machine and the boxing device 3 You may make it control by providing the control part which controls the whole.
　上述の実施形態では、包装機２は、組合せ秤１から排出される被計量物を袋詰めしたけれども、箱詰めするものであってもよい。 In the above-described embodiment, the packaging machine 2 packs the objects to be weighed discharged from the combination weigher 1, but it may be packed in a box.
　１　組合せ秤
　　１ａ　計量部
　　１ｂ　操作設定表示部
　　１ｃ　演算制御部
　　１ｄ　組合せ演算部
　２　包装機
　３　箱詰め装置 DESCRIPTION OF SYMBOLS 1 Combination scale 1a Weighing part 1b Operation setting display part 1c Calculation control part 1d Combination calculation part 2 Packing machine 3 Packing device

Claims (7)

  1. 　複数の計量部でそれぞれ計量される被計量物の重量を組合せた組合せ重量が、目標組合せ重量以上となる被計量物の組合せを選択する組合せ演算部を備え、該組合せ演算部で選択された前記被計量物の組合せを包装機へ排出し、排出される前記被計量物の組合せが、前記包装機によって包装されて１個の包装品とされる組合せ秤であって、
    　前記組合せ演算部は、前記包装機で包装される前記包装品の所定個数毎に、前記所定個数の包装品中に、該包装品の公称重量未満の重量の包装品が含まれることを許容しつつ、前記所定個数の前記包装品の平均重量が、前記公称重量以上となるように前記目標組合せ重量を変更して前記組合せ演算を行う、
    　組合せ秤。     A combination operation unit that selects a combination of objects to be weighed in which the combination weight of the objects to be weighed by each of the plurality of measurement units is equal to or greater than the target combination weight, and the combination operation unit selected by the combination operation unit; The combination of the objects to be weighed is discharged to a packaging machine, and the combination of the objects to be weighed is a combination weigher packaged by the packaging machine into one packaged item,
    The combination calculation unit allows the predetermined number of the packaged products to be packaged by the packaging machine to include a packaged product having a weight less than the nominal weight of the packaged product in the predetermined number of packaged products. Meanwhile, the combination calculation is performed by changing the target combination weight so that the average weight of the predetermined number of the packaged products is equal to or greater than the nominal weight.
    Combination scale.
  2. 　前記組合せ演算部は、前記被計量物の重量を組合せた前記組合せ重量と前記公称重量との偏差を累積し、累積した偏差に応じて前記目標組合せ重量を、前記公称重量又は前記公称重量未満の重量とすると共に、前記累積した偏差を前記所定個数毎に初期化する、
    　請求項１に記載の組合せ秤。     The combination calculation unit accumulates a deviation between the combined weight obtained by combining the weights of the objects to be weighed and the nominal weight, and sets the target combined weight according to the accumulated deviation to be less than the nominal weight or the nominal weight. In addition to the weight, the accumulated deviation is initialized for each predetermined number.
    The combination weigher according to claim 1.
  3. 　前記組合せ演算部は、前記所定個数の包装品中に、前記公称重量を下回る第１の許容値未満であって、かつ、該第１の許容値を下回る第２の許容値以上である重量の前記包装品の含まれる割合が、所定の割合未満となるように、かつ、前記第２の許容値未満の重量の前記包装品が含まれないように、前記目標組合せ重量を変更する、
    　請求項１または２に記載の組合せ秤。     In the predetermined number of packages, the combination calculation unit has a weight that is less than a first tolerance lower than the nominal weight and greater than or equal to a second tolerance lower than the first tolerance. Changing the target combination weight so that a ratio of the packaged product is less than a predetermined ratio and does not include the packaged product having a weight less than the second allowable value;
    The combination weigher according to claim 1 or 2.
  4. 　前記第１の許容値が、前記公称重量から所定の許容誤差を減算した値であり、前記第２の許容値が、前記公称重量から前記所定の許容誤差の２倍を減算した値であり、
    　前記所定個数、前記所定の許容誤差、前記所定の割合を設定する設定部を備える、
    　請求項１ないし３のいずれかに記載の組合せ秤。     The first tolerance is a value obtained by subtracting a predetermined tolerance from the nominal weight, and the second tolerance is a value obtained by subtracting twice the predetermined tolerance from the nominal weight;
    A setting unit configured to set the predetermined number, the predetermined allowable error, and the predetermined ratio;
    The combination weigher according to any one of claims 1 to 3.
  5. 　前記包装品を１次包装品とし、該１次包装品の前記所定個数が、前記包装機の後段で、２次包装品として包装される、
    　請求項１ないし４のいずれかに記載の組合せ秤。     The packaged product is a primary packaged product, and the predetermined number of the primary packaged product is packaged as a secondary packaged product after the packaging machine.
    The combination weigher according to claim 1.
  6. 　複数の計量部でそれぞれ計量される被計量物の重量を組合せた組合せ重量が、目標組合せ重量以上となる被計量物の組合せを選択する組合せ演算部を備え、該組合せ演算部で選択された前記被計量物の組合せを排出する組合せ秤と、
    　前記組合せ秤から排出される前記被計量物の組合せを包装して１個の１次包装品として排出する１次包装機と、
    　前記１次包装機から排出される前記１次包装品の所定個数を包装して１個の２次包装品として排出する２次包装機とを備える計量包装システムであって、
    　前記組合せ秤の前記組合せ演算部は、前記２次包装機で包装される前記所定個数の前記１次包装品中に、該1次包装品の公称重量未満の重量の1次包装品が含まれることを許容しつつ、前記所定個数の前記１次包装品の平均重量が、前記公称重量以上となるように前記目標組合せ重量を変更して前記組合せ演算を行う、
    　計量包装システム。     A combination operation unit that selects a combination of objects to be weighed in which the combined weights of the objects to be weighed by the plurality of weighing units are equal to or greater than the target combination weight, and the combination operation unit selected by the combination operation unit; A combination weigher for discharging the combination of objects to be weighed;
    A primary packaging machine for packaging the combination of the objects to be weighed discharged from the combination weigher and discharging it as one primary package;
    A measuring and packaging system comprising: a secondary packaging machine that wraps a predetermined number of the primary packaging products discharged from the primary packaging machine and discharges the primary packaging products as one secondary packaging product;
    The combination calculation unit of the combination weigher includes a primary package product having a weight less than a nominal weight of the primary package product in the predetermined number of the primary package products packaged by the secondary packaging machine. The combination calculation is performed by changing the target combination weight so that an average weight of the predetermined number of the primary package products is equal to or greater than the nominal weight, while allowing
    Weighing packaging system.
  7. 　前記組合せ演算部は、前記被計量物の重量を組合せた前記組合せ重量と前記１次包装品の前記公称重量との偏差を累積し、累積した偏差に応じて前記目標組合せ重量を、前記公称重量又は前記公称重量未満の重量とすると共に、前記累積した偏差を前記所定個数毎に初期化する、
    　請求項６に記載の計量包装システム。     The combination calculation unit accumulates a deviation between the combination weight obtained by combining the weights of the objects to be weighed and the nominal weight of the primary package product, and the target combination weight is determined according to the accumulated deviation and the nominal weight. Or, the weight is less than the nominal weight, and the accumulated deviation is initialized for each predetermined number.
    The weighing packaging system according to claim 6.
PCT/JP2012/006819 2012-10-24 2012-10-24 Combination scale and measuring and packaging system WO2014064734A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61137020A (en) * 1984-12-06 1986-06-24 Yamato Scale Co Ltd Combination balance
JP2006293922A (en) * 2005-04-14 2006-10-26 Ishida Co Ltd Production system
JP2010175514A (en) * 2009-02-02 2010-08-12 Yamato Scale Co Ltd Combination balance and weighing system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61137020A (en) * 1984-12-06 1986-06-24 Yamato Scale Co Ltd Combination balance
JP2006293922A (en) * 2005-04-14 2006-10-26 Ishida Co Ltd Production system
JP2010175514A (en) * 2009-02-02 2010-08-12 Yamato Scale Co Ltd Combination balance and weighing system

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