WO2020050374A1 - Packaging inspection device, production system, control method, and control program - Google Patents

Packaging inspection device, production system, control method, and control program Download PDF

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Publication number
WO2020050374A1
WO2020050374A1 PCT/JP2019/035061 JP2019035061W WO2020050374A1 WO 2020050374 A1 WO2020050374 A1 WO 2020050374A1 JP 2019035061 W JP2019035061 W JP 2019035061W WO 2020050374 A1 WO2020050374 A1 WO 2020050374A1
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WIPO (PCT)
Prior art keywords
articles
weight
inspection
packaging
article
Prior art date
Application number
PCT/JP2019/035061
Other languages
French (fr)
Japanese (ja)
Inventor
一幸 杉本
貴生 江藤
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株式会社イシダ
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Publication date
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Publication of WO2020050374A1 publication Critical patent/WO2020050374A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties
    • B07C5/346—Sorting according to other particular properties according to radioactive properties
    • 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
    • B65B57/00—Automatic control, checking, warning, or safety devices
    • B65B57/10—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of articles or materials to be packaged
    • 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
    • B65B57/00—Automatic control, checking, warning, or safety devices
    • B65B57/10—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of articles or materials to be packaged
    • B65B57/14—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of articles or materials to be packaged and operating to control, or stop, the feed of articles or material to be packaged
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G9/00—Methods of, or apparatus for, the determination of weight, not provided for in groups G01G1/00 - G01G7/00

Definitions

  • the present disclosure relates to a packaging inspection device, a production system, a control method, and a control program.
  • Patent Document 1 describes an inspection device that inspects an article in which a plurality of contents are stored in a package. In this device, even when the irregular-shaped contents are contained in the package, the number of the contents in the package can be inspected. Specifically, when the content region of the X-ray transmission image includes a narrow portion, the dividing unit divides the content region into two, and the number counting unit counts the number of the content regions.
  • the number of contents (articles) in a package (bag) can be accurately counted.
  • the number of articles is not the predetermined number, it is regarded as an abnormality, and the articles are eliminated, thereby causing a loss.
  • the present disclosure has an object to provide a packaging inspection device, a production system, a control method, and a control program that can equalize the number of articles packaged in a bag.
  • a packaging inspection device includes a measurement device that measures the weight of each of one or a plurality of articles, and an article when the weight of each of the articles is not within a predetermined weight range.
  • a packaging device for packaging a plurality of articles in a line passing through the distribution device into a bag, an inspection device for inspecting the number of the plurality of articles packaged in the bag, and a predetermined weight A control device for controlling the range, wherein the control device changes the predetermined weight range based on the result of the number inspection by the inspection device.
  • this packaging inspection device a plurality of articles are packaged in bags by the packaging device via the measuring device and the sorting device. Subsequently, the number of articles in the bag is inspected by the inspection device. Based on the result of the number inspection, the control device changes a predetermined weight range used in the sorting device. Thereby, the weight of the article passing through the distribution device is changed. That is, the weight distribution of the article to be packaged by the packaging apparatus is changed.
  • the number of articles packed by the packaging device can change. For example, if the weight distribution is changed to a heavy side, the number of articles packaged by the packaging device may decrease. If the weight distribution is changed to the lighter side, the number of articles packaged by the packaging device may increase. According to this packaging inspection device, the number of articles packaged by the packaging device can be adjusted. As a result, the number of articles packaged in the bag can be made uniform.
  • the control device determines that the average weight of the articles increases when the frequency of the number of articles exceeding the predetermined number is greater than or equal to a certain number in the result of the number inspection by the inspection apparatus. Change the weight range and change the predetermined weight range so that the average number of articles decreases when the number of articles is less than the predetermined number and the frequency of shortage is more than a certain number in the result of the number inspection by the inspection device. May be. According to this configuration, the control device increases or decreases the average weight of the articles based on the frequency of the excess number or the frequency of the insufficient number in the result of the number inspection. Therefore, the number of articles packaged in the bag can be made more uniform, and the frequency of excess or shortage is reduced.
  • control device stores a lower limit and an upper limit of the predetermined weight range
  • the controller increases the average weight of the article by at least increasing the lower limit and at least increasing the upper limit.
  • the average weight of the article may be reduced. According to this configuration, it is possible to reliably increase or decrease the average weight of the article.
  • the measurement device may be an X-ray inspection device. According to this configuration, the weight of each article can be measured at high speed and with high accuracy.
  • a production system includes a packaging inspection device according to any of the above, including a measurement device, a distribution device, a packaging device, an inspection device, and a control device, and a line passing through the distribution device. And a combination weighing apparatus for combining and weighing a plurality of articles and supplying the plurality of the combined and weighed articles to a packaging apparatus.
  • a plurality of combined and weighed articles are supplied to the packaging device and packaged in bags. Therefore, not only the number of articles packaged in the bag but also the total weight of the articles packaged in the bag can be made uniform.
  • a control method provides a measuring device that measures the weight of each of articles relative to one or a plurality of articles, and the article when each weight of the articles is not within a predetermined weight range.
  • a packaging device that distributes a plurality of articles in a line passing through the distribution device into a bag, and an inspection device that inspects the number of the plurality of articles packaged in the bag.
  • this packaging inspection device a plurality of articles are packaged in bags by the packaging device via the measuring device and the sorting device. Subsequently, the number of articles in the bag is inspected by the inspection device.
  • the predetermined weight range used in the sorting device is changed by the packaging inspection device based on the result of the number inspection. Thereby, the weight of the article passing through the distribution device is changed. That is, the weight distribution of the article to be packaged by the packaging apparatus is changed.
  • the number of articles packed by the packaging device can change. For example, if the weight distribution is changed to a heavy side, the number of articles packaged by the packaging device may decrease. If the weight distribution is changed to the lighter side, the number of articles packaged by the packaging device may increase.
  • the number of articles packaged by the packaging device can be adjusted. As a result, the number of articles packaged in the bag can be made uniform.
  • a control program includes a measuring device that measures the weight of each of articles relative to one or more articles, and an article when the weight of each article is not within a predetermined weight range.
  • a packaging device that distributes a plurality of articles in a line passing through the distribution device into a bag, and an inspection device that inspects the number of the plurality of articles packaged in the bag.
  • this packaging inspection device a plurality of articles are packaged in bags by the packaging device via the measuring device and the sorting device. Subsequently, the number of articles in the bag is inspected by the inspection device. A predetermined weight range used in the sorting device is changed by the computer of the packaging inspection device based on the result of the number inspection. Thereby, the weight of the article passing through the distribution device is changed. That is, the weight distribution of the article to be packaged by the packaging apparatus is changed.
  • the number of articles packed by the packaging device can change. For example, if the weight distribution is changed to a heavy side, the number of articles packaged by the packaging device may decrease. If the weight distribution is changed to the lighter side, the number of articles packaged by the packaging device may increase. According to this control program, the number of articles packaged by the packaging device can be adjusted. As a result, the number of articles packaged in the bag can be made uniform.
  • the number of articles packaged in a bag can be made uniform.
  • FIG. 1 is a diagram illustrating a production system according to an embodiment.
  • FIG. 2 is a block diagram showing the production system of FIG. 1 including functional blocks of the control device.
  • FIG. 3 is a diagram illustrating a measuring device and a distribution device.
  • FIG. 4 is a diagram illustrating a configuration of the transport device.
  • FIG. 5 is a diagram illustrating a configuration of the combination weighing device.
  • FIG. 6 is a diagram illustrating a configuration of the number inspection device.
  • FIG. 7 is a diagram illustrating a processing flow in the control device.
  • FIG. 8A is a diagram illustrating the weight distribution of the article and a predetermined weight range
  • FIG. 8B is a diagram illustrating the weight distribution and the predetermined weight range of the article after the change.
  • FIG. 9 is a diagram illustrating a configuration of a control program stored in a storage medium.
  • the production system 1 includes a packaging inspection device 1 ⁇ / b> A that packages a plurality of articles A in a bag and inspects the packed plurality of articles A.
  • the production system 1 includes a production device 10, a weight measuring device (measuring device) 20, a sorting device 26, a transport device 30, a plurality of combination weighing devices 40, and a plurality of bag making and packaging devices (packing devices) 50.
  • the packaging inspection device 1A includes a weight measuring device 20, a distribution device 26, a bag making and packaging device 50, a weight inspection device 60, a number inspection device 70, and a control device 90 among these devices.
  • Production device 10, weight measuring device 20, sorting device 26, transport device 30, multiple combination weighing devices 40, multiple bag making and packaging devices 50, weight inspection device 60, number inspection device 70, box packing device 80, and control device 90 are communicably connected to each other.
  • an article A (see FIG. 3) is produced, and the product (packed body) B in which the article A is packaged is boxed.
  • the production device 10 produces the article A.
  • the production device 10 produces, for example, food.
  • the article A produced by the production device 10 does not have a certain size or shape, and therefore does not have a certain weight.
  • the articles A produced by the production device 10 can each have a different weight. Therefore, the packaging inspection apparatus 1A (production system 1) selects only the articles A within a predetermined weight range and packs them in bags.
  • the weight measuring device 20 is an X-ray inspection device, and measures the weight of the article A by irradiating the article A with X-rays.
  • the weight measuring device 20 generates an X-ray transmission image of the article A while transporting the article A, and measures the weight of the article A based on the X-ray transmission image.
  • the weight measuring device 20 can perform not only the weight inspection of the article A but also, for example, a foreign substance inspection of the article A or a shape inspection of the article A.
  • the weight measuring device 20 has a transport unit 21, an X-ray irradiation unit 22, an X-ray detection unit 23, and a control unit 24.
  • the transport unit 21 is disposed in a shield box (not shown).
  • the transport unit 21 is, for example, a belt conveyor.
  • the X-ray irradiator 22 is arranged in a shield box.
  • the X-ray irradiator 22 irradiates the article A conveyed by the conveyor 21 with X-rays.
  • the X-ray irradiator 22 perpendicularly intersects an X-ray tube that emits X-rays and an X-ray emitted from the X-ray tube in a transport direction of the transport unit 21 (hereinafter, simply referred to as “transport direction”).
  • transport direction a transport direction of the transport unit 21
  • the X-ray detector 23 is arranged in a shield box.
  • the X-ray detection unit 23 is a line sensor including X-ray detection elements arranged one-dimensionally in a horizontal direction perpendicular to the transport direction.
  • the X-ray detection unit 23 detects the X-rays transmitted through the article A and the transport belt of the transport unit 21.
  • the control unit 24 controls the operation of each unit of the weight measuring device 20.
  • the control unit 24 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like.
  • the X-ray detection result of the X-ray detection unit 23 is input to the control unit 24.
  • the control unit 24 creates an X-ray transmission image based on the X-ray detection result.
  • the weight measuring device 20 stores a weight conversion table.
  • the weight conversion table is used for estimating the weight of the article A based on the X-ray transmission image.
  • the gray level and the estimated weight [mg] are associated with each other.
  • an initial value of the estimated weight is set according to the property of the article A.
  • the control unit 24 detects the individual weight of the article A based on the X-ray transmission image and the weight conversion table.
  • the control unit 24 binarizes the X-ray transmission image with a predetermined threshold to generate a binarized image.
  • the control unit 24 estimates the weight of the article A based on the density information of each article A in the binarized image.
  • the control unit 24 reads the estimated weight corresponding to the gray level of each pixel of the article A from the weight conversion table, and adds the read estimated weight of each pixel to calculate the weight of the article A.
  • the weight measuring device 20 measures the weight of each of one or more articles A included in the X-ray transmission image.
  • the X-ray transmission image usually includes images of a plurality of articles A. In that case, the weight measuring device 20 measures the weight of each of the plurality of articles A. When only one image of the article A is included in the X-ray transmission image, the weight measuring device 20 measures the weight of the article A.
  • the weight measuring device 20 outputs a measurement result indicating the weight of each article A to the control device 90.
  • the distribution device 26 is configured to distribute (discharge) the article A from the line when at least one of the weights of the one or more articles A is not within a predetermined weight range. .
  • the distribution device 26 is disposed downstream of the transport unit 21 in the transport direction.
  • the distribution device 26 can switch non-discharge or discharge (all discharge) of the article A based on a signal from the control device 90.
  • the sorting device 26 is, for example, a drop conveyor arranged along the transport direction. In this case, the sorting device 26 can switch between non-discharge and discharge of the article A by swinging the downstream side in the transport direction with the upstream side in the transport direction as a fulcrum.
  • the distributing device 26 is swung so as to be inclined downward from the upstream side to the downstream side in the transport direction, so that the transported article A is discharged.
  • the sorting device 26 is not limited to a drop conveyor, and may be, for example, a shuttle conveyor that drops and discharges the article A by expanding and contracting in the extending direction.
  • the distribution device 26 is controlled by the control device 90 and discharges a plurality of articles A so as to include the articles A whose weights are determined to be out of the predetermined weight range. For example, all of the articles A included in the X-ray transmission image may be discharged, or at least include the articles A whose weight is determined not to be within the predetermined weight range, and the vicinity of the articles A (in the transport direction). Other articles A located before and after) may be discharged. If the distribution device 26 has a mechanism and accuracy for discharging only one article A, the distribution device 26 discharges only the article A whose weight is determined to be out of the predetermined weight range. It may be configured as follows.
  • the control device 90 is a device that inputs the measurement result of each article A output from the weight measurement device 20 and controls the distribution device 26.
  • the control device 90 includes a CPU, a ROM, a RAM, and the like.
  • the control device 90 includes a weight acquisition unit 91 as a conceptual part that executes various control processes in the production system 1 (the packaging inspection device 1A), a weight range change unit 92, and a weight distribution. It has a calculation unit 93 and a control unit 94.
  • Such a conceptual portion can be configured, for example, as software that a program stored in a ROM is loaded on a RAM and executed by a CPU.
  • the control device 90 may be configured as hardware such as an electronic circuit.
  • the control device 90 may be incorporated in the weight measuring device 20 or may be incorporated in the distribution device 26. Each function of the control device 90 may be dispersedly incorporated in the weight measurement device 20 and the distribution device 26. The control device 90 may be installed independently. A higher-level management device of the weight measurement device 20 and the distribution device 26 may include the control device 90.
  • the weight obtaining unit 91 obtains the weight of each article A indicated in the measurement result. Upon obtaining the weight of each article A, the weight obtaining section 91 outputs the weight to the weight distribution calculating section 93 and the control section 94.
  • the weight range changing unit 92 stores a predetermined weight range serving as a criterion in the control unit 94.
  • the weight range changing unit 92 stores, for example, a lower limit value and an upper limit value of a predetermined weight range.
  • the predetermined weight range stored in the weight range changing unit 92 can be changed.
  • the weight range changing unit 92 changes or maintains a predetermined weight range based on the result of the number inspection output from the number inspection device 70.
  • the control device 90 controls the predetermined weight range.
  • the control device 90 changes the predetermined range based on the result of the number inspection by the number inspection device 70.
  • the weight distribution calculation unit 93 receives the weight of each article A output from the weight acquisition unit 91, the weight is within or outside the predetermined weight range stored in the weight range change unit 92. Then, the weight distribution of the article A that has passed through the distribution device 26 (that is, has not been discharged by the distribution device 26) is calculated.
  • the weight distribution calculation unit 93 calculates, for example, the average weight of the article A that has passed through the distribution device 26.
  • the weight distribution calculation unit 93 performs these calculations, so that the articles A remaining after passing through the sorting apparatus 26 and the articles A sorted by the sorting apparatus 26 can be distinguished according to their weights. Has become.
  • the control unit 94 determines whether the weight is within the predetermined weight range stored in the weight distribution calculation unit 93 or out of the predetermined range. to decide. For example, when determining that at least one article A exceeds the predetermined weight range (not within the weight range), the control unit 94 controls the distribution device 26 so that the weight is not within the predetermined weight range. The plurality of articles A are discharged so as to include the article A determined to be. Note that the control unit 94 may control the distribution device 26 to discharge only the articles A whose weight is determined to be out of the predetermined weight range.
  • the transport device 30 transports the article A from the weight measuring device 20 to each of the plurality of combination weighing devices 40 and supplies the article A to the combination weighing device 40.
  • the transport device 30 includes a first transport unit 31, a second transport unit 32, a third transport unit 33, and a fourth transport unit 34.
  • Each of the first transport unit 31, the second transport unit 32, the third transport unit 33, and the fourth transport unit 34 transports the article A by, for example, vibration.
  • the first transport unit 31 is a main transport path that transports the article A that has passed through the weight measuring device 20 to the second transport unit 32, the third transport unit 33, and the fourth transport unit 34.
  • the first transport unit 31 extends, for example, along the direction in which the plurality of combination weighing devices 40 are arranged.
  • the second transport unit 32, the third transport unit 33, and the fourth transport unit 34 are sub-transport paths that branch off from the first transport unit 31 and transport the article A.
  • Each of the second transport section 32, the third transport section 33, and the fourth transport section 34 transports the article A to the corresponding combination weighing device 40.
  • the second transport section 32 is connected to the first transport section 31 on the upstream side in the transport direction.
  • the third transport section 33 is connected to the first transport section 31 on the downstream side of the second transport section 32 in the transport direction.
  • the fourth transport unit 34 is connected to the first transport unit 31 on the downstream side of the third transport unit 33 in the transport direction.
  • Each of the plurality of combination weighing devices 40 combines and weighs a plurality of articles A in a line that has passed through the distribution device 26.
  • Each of the plurality of combination weighing devices 40 has the same configuration.
  • one combination weighing device 40 that receives the supply of the article A from the second transport unit 32 of the transport device 30 will be specifically described as an example.
  • the combination weighing device 40 includes a charging chute 41, a distribution table 42, a plurality of radiation feeders 43, a plurality of pool hoppers 44, a plurality of weighing hoppers 45, a load cell 45A, , A collective chute 47, a timing hopper 48, and a control unit 49.
  • the combination weighing device 40 weighs the article A supplied by the transport device 30 so as to have a target weighing value and supplies the weighed article A to the bag making and packaging device 50.
  • the input chute 41 is disposed below the transport end of the second transport section 32.
  • the charging chute 41 is a cylindrical member having an inner space with openings formed above and below.
  • the article A dropped from the transport end of the second transport section 32 is loaded into the inner space of the loading chute 41.
  • the article A that has fallen into the inner space is discharged to the distribution table 42 through the lower opening.
  • the dispersion table 42 is arranged below the input chute 41.
  • the distribution table 42 has a conical transport surface that diverges downward.
  • the distribution table 42 conveys the articles A discharged from the input chute 41 to the radiation feeder 43 by rotating the conveying surface.
  • the plurality of radial feeders 43 are radially arranged along the outer edge of the distribution table 42. Each radiation feeder 43 conveys the article A to the pool hopper 44 by vibration.
  • Each pool hopper 44 is arranged below the tip of each radiation feeder 43. Each pool hopper 44 temporarily stores the articles A discharged from the corresponding radiation feeder 43 and discharges the temporarily stored articles A downward. Each weighing hopper 45 is arranged below each pool hopper 44. Each weighing hopper 45 temporarily stores the articles A discharged from the corresponding pool hopper 44, and discharges the temporarily stored articles A downward.
  • Each load cell 45A supports a corresponding weighing hopper 45.
  • Each of the load cells 45A measures a weighing value according to the weight of the article A when the article A is temporarily stored in each weighing hopper 45.
  • Each booster hopper 46 is arranged below each weighing hopper 45. Each booster hopper 46 temporarily stores the articles A discharged from the corresponding weighing hopper 45 and discharges the temporarily stored articles A downward.
  • the collecting chute 47 is formed in a truncated conical cylindrical shape that tapers downward.
  • the collecting chute 47 is disposed so as to be located below all the weighing hoppers 45 and all the booster hoppers 46.
  • the collecting chute 47 receives the articles A discharged from the respective weighing hoppers 45 and the articles A discharged from the respective booster hoppers 46 and discharges them downward.
  • the timing hopper 48 is arranged below the collecting chute 47.
  • the timing hopper 48 temporarily stores the articles A discharged from the collecting chute 47 and discharges the temporarily stored articles A to the bag making and packaging apparatus 50.
  • the control unit 49 is arranged, for example, in the frame F.
  • the control unit 49 is a device that controls various operations of the combination weighing device 40, and includes a CPU, a ROM, a RAM, and the like.
  • the control unit 49 performs combination weighing.
  • the control unit 49 selects a combination of weighing values from a plurality of weighing values measured by the load cell 45A and associated with the plurality of weighing hoppers 45 and / or the booster hoppers 46 so that the total value becomes the target weighing value. I do.
  • the control unit 49 determines the combination of the measured values from the plurality of measured values output by the load cell 45A so that the total value falls within a predetermined range in which the target measured value (target value) is the combination lower limit. Select (perform combination calculation).
  • the control unit 49 causes the weighing hopper 45 and / or the booster hopper 46 corresponding to the combination to discharge the article A.
  • the combination weighing device 40 supplies the plurality of combined-weighed articles A to the
  • the bag making and packaging apparatus 50 packs a plurality of articles A measured and supplied by the combination weighing apparatus 40 into a bag while forming the film into a bag having a predetermined capacity. That is, the bag making and packaging apparatus 50 packs a plurality of articles A in the line that has passed through the distribution apparatus 26 and combined and weighed by the combination weighing apparatus 40 into bags.
  • the goods B discharged from each bag-making and packaging apparatus 50 are combined by the transport apparatus 52 and transported to the weight inspection apparatus 60.
  • the weight inspection device 60 inspects the weight of the product B in which the article A is included.
  • the number inspection device 70 is an X-ray inspection device, and inspects the product B by irradiating the product B and a plurality of articles A therein with X-rays.
  • the number inspection device 70 generates an X-ray transmission image of the product B while conveying the product B, and inspects the product B based on the X-ray transmission image.
  • the number inspection device 70 inspects the number of the plurality of articles A in the product B.
  • the number inspection device 70 stores a desired number (the number of the articles A in the bag) determined for the articles A and the articles B.
  • the number inspection device 70 has a transport unit 71, an X-ray irradiation unit 72, an X-ray detection unit 73, and a control unit 74.
  • the transport unit 71, the X-ray irradiator 72, and the X-ray detector 73 have the same configurations as the transport unit 21, the X-ray irradiator 22, and the X-ray detector 23 of the weight measuring device 20, respectively.
  • the control unit 74 controls the operation of each unit of the number inspection device 70.
  • the control unit 74 includes a CPU, a ROM, a RAM, and the like.
  • the control unit 74 receives an X-ray detection result of the X-ray detection unit 73.
  • the control unit 74 creates an X-ray transmission image based on the X-ray detection result.
  • the control unit 74 binarizes the X-ray transmission image with a predetermined threshold to generate a binarized image.
  • the weight measuring device 20 detects the number of the articles A based on the density information of each article A in the binarized image. Any known method can be used to detect the number of articles A.
  • the control unit 74 divides the articles A individually based on, for example, density information of the binarized image, and detects the number of the articles A.
  • the control unit 74 outputs the inspection result (the number of articles A) to the control device 90.
  • the box packing device 80 is a device for packing the product B in a cardboard box.
  • the weight acquisition unit 91 of the control device 90 inputs the measurement result of each article A output from the weight measuring device 20, and acquires the weight of each article A indicated in the measurement result (Step S01).
  • the weight obtaining unit 91 outputs the weight of each article A to the control unit 94.
  • the control section 94 determines whether or not the weight is within a predetermined weight range stored in the weight distribution calculation section 93 (step S02).
  • control unit 94 controls the distribution device 26 to include the article A whose weight is determined not to be within the predetermined weight range. For example, a plurality of articles A are discharged (step S03).
  • the weight range changing unit 92 checks whether the result of the number inspection output from the number inspection device 70 is normal. It is determined whether or not it is (step S04).
  • the number inspection device 70 determines, for each product B, whether the number of the articles A in the bag was the same as the desired number, was larger than the desired number, or was larger than the desired number. The judgment result is stored. The number inspection device 70 may determine that the number of the articles A in the bag is one or more larger than the desired number as excess, or the number of the articles A in the bag is two or more larger than the desired number. It may be determined that the number is excessive.
  • the number inspection device 70 may determine that the number of the articles A in the bag is one or more less than the desired number as an insufficient number, or the number of the articles A in the bag is two or more less than the desired number. It may be determined that the number is insufficient. In that case, a threshold value (for example, an integer of 2 or more) of the number difference for determining that the number is excessive or insufficient is set. The severity of such a number inspection (the size of the threshold value of the number difference) can be determined according to the required accuracy of the number.
  • the number inspection device 70 stores, as a result of the number inspection, the frequency at which the number is determined to be excessive and the frequency at which the number is determined to be insufficient.
  • the number inspection device 70 includes the frequency information in the result of the number inspection, and outputs the result of the number inspection to the weight range changing unit 92.
  • the weight range changing unit 92 stores a frequency threshold value related to excess or insufficient number.
  • the frequency threshold is set individually for each of the number excess and the number shortage, for example.
  • the weight range changing unit 92 determines that the result of the number inspection is normal, and performs the weight maintenance control. Perform (Step S05).
  • the weight range changing unit 92 maintains a predetermined weight range. Ie the weight range change unit 92 does not change the lower limit value W L and the upper limit value W H of a predetermined weight range to be described later. As a result, the average weight W Avj of the article A does not change and is maintained.
  • the weight range changing unit 92 determines that the frequency of excess number is equal to or higher than the frequency threshold relating to excess number (that is, equal to or higher than a certain value). In this case, the weight range changing unit 92 changes the predetermined weight range so that the average weight of the article A increases. More particularly, weight range change unit 92, as described in FIG. 8 (a), stores the lower limit value W L and the upper limit value W H of a predetermined weight range. Weight range change unit 92, as described in FIG. 8 (b), for example by increasing the lower limit value W L, the lower limit value W L '.
  • the weight range changing unit 92 increases the average weight W Avj of the article A to the average weight W Avj ′.
  • Feedback control regarding a change in the average weight of the article A may be performed between the weight distribution calculation unit 93 and the weight range change unit 92.
  • the average weight W AVJ before change the lower limit value W L before the change, and is also shown with each value after the change.
  • the weight range changing unit 92 determines that the frequency of the number shortage is equal to or higher than the frequency threshold relating to the number shortage (that is, is equal to or higher than a certain value).
  • the weight range changing unit 92 changes the predetermined weight range so that the average weight of the article A decreases. More particularly, weight range change unit 92, for example by reducing the upper limit value W H, reducing the average weight W AVJ article A.
  • the weight reduction control is the same as the weight increase control shown in FIG. 8B except that the manner of changing the weight range is reversed. Therefore, a diagram for explaining the weight reduction control is omitted. Feedback control regarding a change in the average weight of the article A may be performed between the weight distribution calculation unit 93 and the weight range change unit 92.
  • the manner of changing the predetermined weight range in the weight increase control in step S06 and the weight decrease control in step S07 is not limited to the above.
  • the weight range changing unit 92 may change both the lower limit WL and the upper limit WH .
  • the weight range changing unit 92 may perform control based on another index related to the weight distribution other than the average weight, regardless of the average weight of the article A calculated by the weight distribution calculation unit 93.
  • the above-described series of processing is repeated.
  • the predetermined weight range in the weight measuring device 20 and the sorting device 26 is changed based on the result of the number inspection. The numbers are kept uniform.
  • control program P for realizing the production system 1 (control method) will be described.
  • the control program P can be recorded on a computer-readable recording medium 100.
  • the control program P stored in the recording medium 100 includes a weight acquisition module M1, a weight range change module M2, and a weight distribution calculation module M3.
  • the control program P functions by causing a computer to execute the weight acquisition module M1, the weight range change module M2, and the weight distribution calculation module M3.
  • the functions realized by executing the weight obtaining module M1, the weight range changing module M2, and the weight distribution calculating module M3 are the same as the functions of the weight obtaining unit 91, the weight range changing unit 92, and the weight distribution calculating unit 93, respectively. .
  • the control program P is recorded in a program recording area of the recording medium 100.
  • the recording medium 100 is configured by a recording medium such as a CD-ROM, a DVD, a ROM, and a semiconductor memory.
  • the control program P may be provided via a communication network as a computer data signal superimposed on a carrier wave.
  • a plurality of articles A are packaged in bags by the bag making and packaging device 50 via the weight measuring device 20 and the distribution device 26. You. Subsequently, the number of articles A in the bag is inspected by the number inspection device 70. Based on the result of the number inspection, the predetermined weight range used in the sorting device 26 is changed by the control device 90 of the packaging inspection device 1A. Thereby, the weight of the article A passing through the distribution device 26 is changed. That is, the weight distribution of the article A to be packaged by the bag making and packaging apparatus 50 is changed. By changing the weight distribution of the article A, the number of the articles A packed by the bag making and packaging apparatus 50 can change.
  • the number of articles A packaged by the bag making and packaging apparatus 50 may decrease. If the weight distribution is changed to a lighter side, the number of articles A packaged by the bag making and packaging apparatus 50 may increase. According to the production system 1, the packaging inspection device 1A, the control method, and the control program P, the number of articles A packaged by the bag making and packaging device 50 can be adjusted. As a result, the number of articles A packed in the bag can be made uniform.
  • the control device 90 increases or decreases the average weight of the article A based on the frequency of the excess number or the frequency of the insufficient number in the result of the number inspection. Therefore, the number of articles A packed in the bag can be made more uniform, and the frequency of excess or shortage is reduced.
  • Control device 90 by increasing at least the lower limit value W L, increasing the average weight W AVJ articles A, by reducing at least the upper limit value W H, reducing the average weight W AVJ article A. Therefore, it is possible to reliably increase or decrease the average weight W Avj of the article A.
  • the weight measuring device 20 is an X-ray inspection device, the weight of each article A can be measured at high speed and with high accuracy.
  • Combined weighing of a package inspection apparatus 1A including a weight measuring device 20, a distribution device 26, a bag making and packaging device 50, a number inspection device 70, and a control device 90, and a plurality of articles A in a line passing through the distribution device 26.
  • the production system 1 including the combination weighing device 40, the plurality of combined weighed articles A are supplied to the bag making and packaging device 50 and packed in bags. Therefore, not only the number of the articles A packaged in the bag but also the total weight of the articles A packaged in the bag can be made uniform.
  • the transport device 30 includes the first transport unit 31, the second transport unit 32, the third transport unit 33, and the fourth transport unit 34, and the first transport unit 31 to the second transport unit 32,
  • An example in which the article A is supplied to the third transport unit 33 and the fourth transport unit 34 has been described as an example.
  • the configuration of the transport device is not limited to this.
  • the transport device may be provided with a transport path independently for each combination weighing device 40.
  • each of the first transport unit 31, the second transport unit 32, the third transport unit 33, and the fourth transport unit 34 of the transport device 30 transport the article A by vibration has been described as an example.
  • each of the first transport unit 31, the second transport unit 32, the third transport unit 33, and the fourth transport unit 34 may be, for example, a belt conveyor.
  • the supply amount of the article A to each combination weighing device 40 is changed by changing the transfer force of the second transfer unit 32, the third transfer unit 33, and the fourth transfer unit 34 in the transfer device 30.
  • the form has been described as an example.
  • the supply amount of the article A may be changed by providing a shutter or the like at a connection portion between the first transport unit 31 and the second transport unit 32, the third transport unit 33, and the fourth transport unit 34.
  • the production system 1 includes the weight measuring device 20, the bag making and packaging device 50, the weight inspection device 60, the number inspection device 70, and the box packing device 80 has been described as an example.
  • the production system 1 only needs to include at least the transport device 30 and the plurality of combination weighing devices 40.
  • the example in which the production system 1 includes the three combination weighing devices 40 has been described as an example.
  • the number of combination weighing devices 40 is not limited to three.
  • the number of combination weighing devices 40 may be one or two, or may be four or more.
  • the combination weighing device 40 conveys the article A to the radiation feeder 43 by rotating the conveyance surface of the distribution table 42.
  • the distribution table 42 may convey the article A by vibration.
  • the plurality of radiation feeders 43 convey the article A by vibration has been described as an example.
  • the radiation feeder 43 may be configured such that the article A is conveyed by a rotatable coil unit (screw) or a belt conveyor.
  • the combination weighing device 40 has the booster hopper 46 as an example.
  • the combination weighing device 40 may not include the booster hopper 46.
  • the control unit 49 selects a combination of weighing values from a plurality of weighing values measured by the load cell 45A and associated with the plurality of weighing hoppers 45 so that the total value becomes the target weighing value.
  • the production system includes a seal inspection device that detects an abnormality in a bag made and packaged by the bag making and packaging device 50, a metal inspection device that inspects whether or not metal has mixed into the article A included in the product B, and the like. Further, it may be provided.
  • the weight measuring device 20 may be a type of weight measuring device different from the X-ray inspection device.
  • the weight measuring device 20 may be another known device capable of measuring the weight of each article A on the transport unit 21.
  • the weighing device that weighs the article A is not limited to the combination weighing device described above.
  • Other known metering devices can be applied to the production system of the present disclosure.
  • the plurality of combination weighing devices 40 may be omitted.
  • a part of the plurality of articles A sorted by the sorting device may be packed in a bag by the packing device without providing any weighing device.
  • the distribution device 26 may be a device that includes a pusher that can expand and contract in a direction intersecting the transport direction, and that discharges the article A from the line by the expansion and contraction of the pusher.
  • the sorting device 26 may be, for example, a device that includes an arm capable of gripping the articles A to be sorted on the conveyor, and discharges the articles A from the line by the gripping operation of the arm.
  • the number of articles packaged in a bag can be made uniform.

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Abstract

A packaging inspection device is provided with: a weight measuring device for measuring the weights of each of one or a plurality of objects; a sorting device which sorts objects away from the line if the weight of the corresponding object does not lie within a prescribed weight range; a bag manufacturing and packaging device which packs a plurality of the objects within the line that have passed through the sorting device into a bag; a quantity inspecting device which inspects the quantity of the plurality of objects packed into the bag; and a control device for controlling the prescribed weight range. The control device changes the prescribed weight range on the basis of the result of the quantity inspection performed by the quantity inspecting device.

Description

包装検査装置、生産システム、制御方法、および制御プログラムPackaging inspection device, production system, control method, and control program
　本開示は、包装検査装置、生産システム、制御方法、および制御プログラムに関する。 The present disclosure relates to a packaging inspection device, a production system, a control method, and a control program.
　特許文献１には、パッケージに複数の内容物が収容された物品を検査する検査装置が記載されている。この装置では、不定形の内容物がパッケージ内に収容されている場合であっても、パッケージ内の内容物の個数を検査することができる。具体的には、Ｘ線透過画像の内容物領域が狭隘部分を含む場合に、分断部がその内容物領域を２つに分断し、個数計数部が、内容物領域の個数を計数する。 Patent Document 1 describes an inspection device that inspects an article in which a plurality of contents are stored in a package. In this device, even when the irregular-shaped contents are contained in the package, the number of the contents in the package can be inspected. Specifically, when the content region of the X-ray transmission image includes a narrow portion, the dividing unit divides the content region into two, and the number counting unit counts the number of the content regions.
国際公開第２０１６／１１７３７２号International Publication No. WO 2016/117372
　上記した従来の技術によれば、パッケージ（袋）の中の内容物（物品）の個数を正確に計数することができる。しかし、物品の個数が所定の個数でない場合には、そのことが異常とされて物品を排除することになり、よってロスが生じる。従来の技術に対してはこのような課題が挙げられるが、そもそもの課題として、袋に包装される物品の数を均一にすることができるシステムが求められている。 According to the conventional technique described above, the number of contents (articles) in a package (bag) can be accurately counted. However, if the number of articles is not the predetermined number, it is regarded as an abnormality, and the articles are eliminated, thereby causing a loss. Although such problems are raised with respect to the conventional technology, as a first problem, there is a demand for a system that can make the number of articles packed in a bag uniform.
　本開示は、袋に包装される物品の数を均一にすることができる包装検査装置、生産システム、制御方法、および制御プログラムを提供することを目的とする。 The present disclosure has an object to provide a packaging inspection device, a production system, a control method, and a control program that can equalize the number of articles packaged in a bag.
　本開示の一態様に係る包装検査装置は、１つ又は複数の物品に対して物品のそれぞれの重量を計測する計測装置と、物品のそれぞれの重量が所定の重量範囲内にない場合に当該物品をラインから振り分ける振分装置と、振分装置を通過したライン内の複数の物品を袋に包装する包装装置と、袋に包装された複数の物品の個数を検査する検査装置と、所定の重量範囲を制御する制御装置と、を備え、制御装置は、検査装置による個数検査の結果に基づいて所定の重量範囲を変更する。 A packaging inspection device according to an embodiment of the present disclosure includes a measurement device that measures the weight of each of one or a plurality of articles, and an article when the weight of each of the articles is not within a predetermined weight range. , A packaging device for packaging a plurality of articles in a line passing through the distribution device into a bag, an inspection device for inspecting the number of the plurality of articles packaged in the bag, and a predetermined weight A control device for controlling the range, wherein the control device changes the predetermined weight range based on the result of the number inspection by the inspection device.
　この包装検査装置によれば、計測装置および振分装置を経て、包装装置によって複数の物品が袋に包装される。続いて、袋内の物品の個数が検査装置によって検査される。個数検査の結果に基づいて、制御装置が、振分装置において用いられる所定の重量範囲を変更する。これにより、振分装置を通過する物品の重量が変更される。つまり、包装装置による包装の対象となる物品の重量分布が変更される。物品の重量分布が変更されることにより、包装装置によって包装される物品の個数が変化し得る。たとえば、重量分布が重い側に変更されると、包装装置によって包装される物品の個数が減少し得る。重量分布が軽い側に変更されると、包装装置によって包装される物品の個数が増大し得る。この包装検査装置によれば、包装装置によって包装される物品の個数を調整することができる。その結果として、袋に包装される物品の数を均一にすることができる。 According to this packaging inspection device, a plurality of articles are packaged in bags by the packaging device via the measuring device and the sorting device. Subsequently, the number of articles in the bag is inspected by the inspection device. Based on the result of the number inspection, the control device changes a predetermined weight range used in the sorting device. Thereby, the weight of the article passing through the distribution device is changed. That is, the weight distribution of the article to be packaged by the packaging apparatus is changed. By changing the weight distribution of the articles, the number of articles packed by the packaging device can change. For example, if the weight distribution is changed to a heavy side, the number of articles packaged by the packaging device may decrease. If the weight distribution is changed to the lighter side, the number of articles packaged by the packaging device may increase. According to this packaging inspection device, the number of articles packaged by the packaging device can be adjusted. As a result, the number of articles packaged in the bag can be made uniform.
　いくつかの態様において、制御装置は、検査装置による個数検査の結果において、物品の個数が所定の個数よりも多い個数超過の頻度が一定以上である場合、物品の平均重量が増大するよう所定の重量範囲を変更し、検査装置による個数検査の結果において、物品の個数が所定の個数よりも少ない個数不足の頻度が一定以上である場合、物品の平均重量が減少するよう所定の重量範囲を変更してもよい。この構成によれば、個数検査の結果における個数超過の頻度、または、個数不足の頻度に基づいて、制御装置が、物品の平均重量を増大させたり、または、減少させたりする。よって、袋に包装される物品の数をより一層均一にすることができ、個数超過または個数不足の頻度が低減される。 In some aspects, the control device determines that the average weight of the articles increases when the frequency of the number of articles exceeding the predetermined number is greater than or equal to a certain number in the result of the number inspection by the inspection apparatus. Change the weight range and change the predetermined weight range so that the average number of articles decreases when the number of articles is less than the predetermined number and the frequency of shortage is more than a certain number in the result of the number inspection by the inspection device. May be. According to this configuration, the control device increases or decreases the average weight of the articles based on the frequency of the excess number or the frequency of the insufficient number in the result of the number inspection. Therefore, the number of articles packaged in the bag can be made more uniform, and the frequency of excess or shortage is reduced.
　いくつかの態様において、制御装置は、所定の重量範囲の下限値および上限値を記憶しており、制御装置は、少なくとも下限値を増大させることにより、物品の平均重量を増大させ、少なくとも上限値を減少させることにより、物品の平均重量を減少させてもよい。この構成によれば、物品の平均重量を確実に増大または減少させることができる。 In some embodiments, the control device stores a lower limit and an upper limit of the predetermined weight range, and the controller increases the average weight of the article by at least increasing the lower limit and at least increasing the upper limit. By reducing the average weight of the article, the average weight of the article may be reduced. According to this configuration, it is possible to reliably increase or decrease the average weight of the article.
　いくつかの態様において、計測装置はＸ線検査装置であってもよい。この構成によれば、物品のそれぞれの重量を高速かつ高精度に計測することができる。 In some embodiments, the measurement device may be an X-ray inspection device. According to this configuration, the weight of each article can be measured at high speed and with high accuracy.
　本開示の別の態様に係る生産システムは、計測装置と振分装置と包装装置と検査装置と制御装置とを備える上記のいずれかに記載の包装検査装置と、振分装置を通過したライン内の複数の物品を組合せ計量し、組合せ計量された複数の物品を包装装置に供給する組合せ計量装置と、を備える。この生産システムによれば、組合せ計量された複数の物品が包装装置に供給され、袋に包装される。よって、袋に包装される物品の数のみならず、袋に包装された物品の合計重量をも均一にすることができる。 A production system according to another aspect of the present disclosure includes a packaging inspection device according to any of the above, including a measurement device, a distribution device, a packaging device, an inspection device, and a control device, and a line passing through the distribution device. And a combination weighing apparatus for combining and weighing a plurality of articles and supplying the plurality of the combined and weighed articles to a packaging apparatus. According to this production system, a plurality of combined and weighed articles are supplied to the packaging device and packaged in bags. Therefore, not only the number of articles packaged in the bag but also the total weight of the articles packaged in the bag can be made uniform.
　本開示の別の態様に係る制御方法は、１つ又は複数の物品に対して物品のそれぞれの重量を計測する計測装置と、物品のそれぞれの重量が所定の重量範囲内にない場合に当該物品をラインから振り分ける振分装置と、振分装置を通過したライン内の複数の物品を袋に包装する包装装置と、袋に包装された複数の物品の個数を検査する検査装置と、を備える包装検査装置で実行される制御方法であって、包装検査装置が、検査装置による個数検査の結果に基づいて所定の重量範囲を変更する。 A control method according to another aspect of the present disclosure provides a measuring device that measures the weight of each of articles relative to one or a plurality of articles, and the article when each weight of the articles is not within a predetermined weight range. , A packaging device that distributes a plurality of articles in a line passing through the distribution device into a bag, and an inspection device that inspects the number of the plurality of articles packaged in the bag. A control method executed by an inspection device, wherein a packaging inspection device changes a predetermined weight range based on a result of a number inspection by the inspection device.
　この包装検査装置によれば、計測装置および振分装置を経て、包装装置によって複数の物品が袋に包装される。続いて、袋内の物品の個数が検査装置によって検査される。個数検査の結果に基づいて、包装検査装置によって、振分装置において用いられる所定の重量範囲が変更される。これにより、振分装置を通過する物品の重量が変更される。つまり、包装装置による包装の対象となる物品の重量分布が変更される。物品の重量分布が変更されることにより、包装装置によって包装される物品の個数が変化し得る。たとえば、重量分布が重い側に変更されると、包装装置によって包装される物品の個数が減少し得る。重量分布が軽い側に変更されると、包装装置によって包装される物品の個数が増大し得る。この制御方法によれば、包装装置によって包装される物品の個数を調整することができる。その結果として、袋に包装される物品の数を均一にすることができる。 According to this packaging inspection device, a plurality of articles are packaged in bags by the packaging device via the measuring device and the sorting device. Subsequently, the number of articles in the bag is inspected by the inspection device. The predetermined weight range used in the sorting device is changed by the packaging inspection device based on the result of the number inspection. Thereby, the weight of the article passing through the distribution device is changed. That is, the weight distribution of the article to be packaged by the packaging apparatus is changed. By changing the weight distribution of the articles, the number of articles packed by the packaging device can change. For example, if the weight distribution is changed to a heavy side, the number of articles packaged by the packaging device may decrease. If the weight distribution is changed to the lighter side, the number of articles packaged by the packaging device may increase. According to this control method, the number of articles packaged by the packaging device can be adjusted. As a result, the number of articles packaged in the bag can be made uniform.
　本開示の別の態様に係る制御プログラムは、１つ又は複数の物品に対して物品のそれぞれの重量を計測する計測装置と、物品のそれぞれの重量が所定の重量範囲内にない場合に当該物品をラインから振り分ける振分装置と、振分装置を通過したライン内の複数の物品を袋に包装する包装装置と、袋に包装された複数の物品の個数を検査する検査装置と、を備える包装検査装置のコンピュータに実行させる制御プログラムであって、検査装置による個数検査の結果に基づいて所定の重量範囲を変更する。 A control program according to another aspect of the present disclosure includes a measuring device that measures the weight of each of articles relative to one or more articles, and an article when the weight of each article is not within a predetermined weight range. , A packaging device that distributes a plurality of articles in a line passing through the distribution device into a bag, and an inspection device that inspects the number of the plurality of articles packaged in the bag. A control program to be executed by a computer of the inspection device, wherein a predetermined weight range is changed based on a result of the number inspection by the inspection device.
　この包装検査装置によれば、計測装置および振分装置を経て、包装装置によって複数の物品が袋に包装される。続いて、袋内の物品の個数が検査装置によって検査される。個数検査の結果に基づいて、包装検査装置のコンピュータによって、振分装置において用いられる所定の重量範囲が変更される。これにより、振分装置を通過する物品の重量が変更される。つまり、包装装置による包装の対象となる物品の重量分布が変更される。物品の重量分布が変更されることにより、包装装置によって包装される物品の個数が変化し得る。たとえば、重量分布が重い側に変更されると、包装装置によって包装される物品の個数が減少し得る。重量分布が軽い側に変更されると、包装装置によって包装される物品の個数が増大し得る。この制御プログラムによれば、包装装置によって包装される物品の個数を調整することができる。その結果として、袋に包装される物品の数を均一にすることができる。 According to this packaging inspection device, a plurality of articles are packaged in bags by the packaging device via the measuring device and the sorting device. Subsequently, the number of articles in the bag is inspected by the inspection device. A predetermined weight range used in the sorting device is changed by the computer of the packaging inspection device based on the result of the number inspection. Thereby, the weight of the article passing through the distribution device is changed. That is, the weight distribution of the article to be packaged by the packaging apparatus is changed. By changing the weight distribution of the articles, the number of articles packed by the packaging device can change. For example, if the weight distribution is changed to a heavy side, the number of articles packaged by the packaging device may decrease. If the weight distribution is changed to the lighter side, the number of articles packaged by the packaging device may increase. According to this control program, the number of articles packaged by the packaging device can be adjusted. As a result, the number of articles packaged in the bag can be made uniform.
　本開示のいくつかの態様によれば、袋に包装される物品の数を均一にすることができる。 According to some aspects of the present disclosure, the number of articles packaged in a bag can be made uniform.
図１は、一実施形態に係る生産システムを示す図である。FIG. 1 is a diagram illustrating a production system according to an embodiment. 図２は、制御装置の機能ブロックを含む、図１の生産システムを示すブロック図である。FIG. 2 is a block diagram showing the production system of FIG. 1 including functional blocks of the control device. 図３は、計測装置および振分装置を示す図である。FIG. 3 is a diagram illustrating a measuring device and a distribution device. 図４は、搬送装置の構成を示す図である。FIG. 4 is a diagram illustrating a configuration of the transport device. 図５は、組合せ計量装置の構成を示す図である。FIG. 5 is a diagram illustrating a configuration of the combination weighing device. 図６は、個数検査装置の構成を示す図である。FIG. 6 is a diagram illustrating a configuration of the number inspection device. 図７は、制御装置における処理フローを示す図である。FIG. 7 is a diagram illustrating a processing flow in the control device. 図８（ａ）は物品の重量分布および所定の重量範囲を示す図、図８（ｂ）は変更後における、物品の重量分布および所定の重量範囲を示す図である。FIG. 8A is a diagram illustrating the weight distribution of the article and a predetermined weight range, and FIG. 8B is a diagram illustrating the weight distribution and the predetermined weight range of the article after the change. 図９は、記憶媒体に記憶されている制御プログラムの構成を示す図である。FIG. 9 is a diagram illustrating a configuration of a control program stored in a storage medium.
　以下、本開示の実施形態について、図面を参照しながら説明する。なお、図面の説明において同一要素には同一符号を付し、重複する説明は省略する。 Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In the description of the drawings, the same elements will be denoted by the same reference symbols, without redundant description.
　図１および図２に示されるように、生産システム１は、複数の物品Ａを袋に包装し、包装された複数の物品Ａを検査する包装検査装置１Ａを備える。生産システム１は、生産装置１０と、重量計測装置（計測装置）２０と、振分装置２６と、搬送装置３０と、複数の組合せ計量装置４０と、複数の製袋包装装置（包装装置）５０と、重量検査装置６０と、個数検査装置（検査装置）７０と、箱詰装置８０と、制御装置９０とを備える。包装検査装置１Ａは、それらの装置のうち、重量計測装置２０と、振分装置２６と、製袋包装装置５０と、重量検査装置６０と、個数検査装置７０と、制御装置９０とを備える。生産装置１０、重量計測装置２０、振分装置２６、搬送装置３０、複数の組合せ計量装置４０、複数の製袋包装装置５０、重量検査装置６０、個数検査装置７０、箱詰装置８０及び制御装置９０は、互いに通信可能に接続されている。生産システム１では、物品Ａ（図３参照）を生産して、物品Ａが包装された商品（包装体）Ｂの箱詰めまでを行う。 As shown in FIGS. 1 and 2, the production system 1 includes a packaging inspection device 1 </ b> A that packages a plurality of articles A in a bag and inspects the packed plurality of articles A. The production system 1 includes a production device 10, a weight measuring device (measuring device) 20, a sorting device 26, a transport device 30, a plurality of combination weighing devices 40, and a plurality of bag making and packaging devices (packing devices) 50. , A weight inspection device 60, a number inspection device (inspection device) 70, a box packing device 80, and a control device 90. The packaging inspection device 1A includes a weight measuring device 20, a distribution device 26, a bag making and packaging device 50, a weight inspection device 60, a number inspection device 70, and a control device 90 among these devices. Production device 10, weight measuring device 20, sorting device 26, transport device 30, multiple combination weighing devices 40, multiple bag making and packaging devices 50, weight inspection device 60, number inspection device 70, box packing device 80, and control device 90 are communicably connected to each other. In the production system 1, an article A (see FIG. 3) is produced, and the product (packed body) B in which the article A is packaged is boxed.
　生産装置１０は、物品Ａを生産する。生産装置１０は、例えば、食品を生産する。生産装置１０によって生産される物品Ａは、一定の大きさ又は形状を有しておらず、したがって、一定の重量を有していない。生産装置１０によって生産される物品Ａは、それぞれ、異なる重量を有し得る。そのため、包装検査装置１Ａ（生産システム１）では、所定の重量範囲内にある物品Ａのみを選別し、袋に包装する。 The production device 10 produces the article A. The production device 10 produces, for example, food. The article A produced by the production device 10 does not have a certain size or shape, and therefore does not have a certain weight. The articles A produced by the production device 10 can each have a different weight. Therefore, the packaging inspection apparatus 1A (production system 1) selects only the articles A within a predetermined weight range and packs them in bags.
　重量計測装置２０は、Ｘ線検査装置であり、物品ＡにＸ線を照射することによって物品Ａの重量を計測する。重量計測装置２０は、物品Ａを搬送しつつ物品ＡのＸ線透過画像を生成し、Ｘ線透過画像に基づいて物品Ａの重量を計測する。重量計測装置２０は、物品Ａの重量検査のみならず、たとえば、物品Ａにおける異物検査、または物品Ａの形状検査を行うこともできる。 The weight measuring device 20 is an X-ray inspection device, and measures the weight of the article A by irradiating the article A with X-rays. The weight measuring device 20 generates an X-ray transmission image of the article A while transporting the article A, and measures the weight of the article A based on the X-ray transmission image. The weight measuring device 20 can perform not only the weight inspection of the article A but also, for example, a foreign substance inspection of the article A or a shape inspection of the article A.
　図３に示されるように、重量計測装置２０は、搬送部２１と、Ｘ線照射部２２と、Ｘ線検出部２３と、制御部２４と、を有している。 As shown in FIG. 3, the weight measuring device 20 has a transport unit 21, an X-ray irradiation unit 22, an X-ray detection unit 23, and a control unit 24.
　搬送部２１は、図示しないシールドボックス内に配置されている。搬送部２１は、例えば、ベルトコンベアである。Ｘ線照射部２２は、シールドボックス内に配置されている。Ｘ線照射部２２は、搬送部２１によって搬送される物品ＡにＸ線を照射する。Ｘ線照射部２２は、例えば、Ｘ線を出射するＸ線管と、Ｘ線管から出射されたＸ線を、搬送部２１の搬送方向（以下、単に「搬送方向」と称する。）に垂直な面内において扇状に広げるコリメータと、を有している。Ｘ線検出部２３は、シールドボックス内に配置されている。Ｘ線検出部２３は、搬送方向に垂直な水平方向に沿って一次元に配列されたＸ線検出素子によって構成されているラインセンサである。Ｘ線検出部２３は、物品Ａ及び搬送部２１の搬送ベルトを透過したＸ線を検出する。 The transport unit 21 is disposed in a shield box (not shown). The transport unit 21 is, for example, a belt conveyor. The X-ray irradiator 22 is arranged in a shield box. The X-ray irradiator 22 irradiates the article A conveyed by the conveyor 21 with X-rays. For example, the X-ray irradiator 22 perpendicularly intersects an X-ray tube that emits X-rays and an X-ray emitted from the X-ray tube in a transport direction of the transport unit 21 (hereinafter, simply referred to as “transport direction”). And a collimator that spreads out in a fan-shaped manner in a plane. The X-ray detector 23 is arranged in a shield box. The X-ray detection unit 23 is a line sensor including X-ray detection elements arranged one-dimensionally in a horizontal direction perpendicular to the transport direction. The X-ray detection unit 23 detects the X-rays transmitted through the article A and the transport belt of the transport unit 21.
　制御部２４は、重量計測装置２０の各部の動作を制御する。制御部２４は、ＣＰＵ（Central　Processing　Unit）、ＲＯＭ（Read　Only　Memory）、ＲＡＭ（Random　Access　Memory）等で構成されている。制御部２４には、Ｘ線検出部２３のＸ線の検出結果が入力される。制御部２４は、Ｘ線の検出結果に基づいて、Ｘ線透過画像を作成する。 The control unit 24 controls the operation of each unit of the weight measuring device 20. The control unit 24 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The X-ray detection result of the X-ray detection unit 23 is input to the control unit 24. The control unit 24 creates an X-ray transmission image based on the X-ray detection result.
　重量計測装置２０は、重量換算テーブルを記憶している。重量換算テーブルは、Ｘ線透過画像に基づいて物品Ａの重量を推定するために用いられる。重量換算テーブルでは、濃淡レベルと、推定重量［ｍｇ］とが、対応付けられている。重量換算テーブルは、物品Ａの性質に応じて、推定重量の初期値が設定されている。 The weight measuring device 20 stores a weight conversion table. The weight conversion table is used for estimating the weight of the article A based on the X-ray transmission image. In the weight conversion table, the gray level and the estimated weight [mg] are associated with each other. In the weight conversion table, an initial value of the estimated weight is set according to the property of the article A.
　制御部２４は、Ｘ線透過画像と重量換算テーブルとに基づいて、物品Ａの個々の重量を検出する。制御部２４は、Ｘ線透過画像を所定の閾値で二値化して、二値化画像を生成する。制御部２４は、二値化画像における個々の物品Ａの濃淡情報に基づいて、物品Ａの重量を推定する。制御部２４は、物品Ａの各画素の濃淡レベルに対応する推定重量を重量換算テーブルから読み出し、読み出した各画素の推定重量を加算して物品Ａの重量を算出する。 The control unit 24 detects the individual weight of the article A based on the X-ray transmission image and the weight conversion table. The control unit 24 binarizes the X-ray transmission image with a predetermined threshold to generate a binarized image. The control unit 24 estimates the weight of the article A based on the density information of each article A in the binarized image. The control unit 24 reads the estimated weight corresponding to the gray level of each pixel of the article A from the weight conversion table, and adds the read estimated weight of each pixel to calculate the weight of the article A.
　重量計測装置２０は、Ｘ線透過画像に含まれる１つ又は複数の物品Ａのそれぞれの重量を計測する。Ｘ線透過画像には、通常、複数の物品Ａの画像が含まれる。その場合、重量計測装置２０は、複数の物品Ａのそれぞれの重量を計測する。Ｘ線透過画像に１つの物品Ａの画像のみが含まれる場合、重量計測装置２０は、その物品Ａの重量を計測する。重量計測装置２０は、各物品Ａの重量を示す計測結果を制御装置９０に出力する。 The weight measuring device 20 measures the weight of each of one or more articles A included in the X-ray transmission image. The X-ray transmission image usually includes images of a plurality of articles A. In that case, the weight measuring device 20 measures the weight of each of the plurality of articles A. When only one image of the article A is included in the X-ray transmission image, the weight measuring device 20 measures the weight of the article A. The weight measuring device 20 outputs a measurement result indicating the weight of each article A to the control device 90.
　振分装置２６は、１つ又は複数の物品Ａの重量のうち、少なくとも１つの重量が所定の重量範囲内にない場合に、当該物品Ａをラインから振り分ける（排出する）ように構成されている。振分装置２６は、搬送部２１の搬送方向における下流側に配置されている。振分装置２６は、物品Ａの非排出又は排出（全排出）を、制御装置９０からの信号に基づいて切り替えることができる。振分装置２６は、たとえば、搬送方向に沿って配置されたドロップコンベアである。この場合、振分装置２６は、搬送方向の上流側を支点として、搬送方向の下流側が揺動することで、物品Ａの非排出又は排出を切り替え可能である。たとえば、搬送方向の上流側から下流側に向かって下方に傾斜するように振分装置２６が揺動されることで、搬送される物品Ａが排出される。振分装置２６は、ドロップコンベアに限定されず、例えば延在方向に伸縮することで物品Ａを落下させて排出するシャトルコンベア等であってもよい。 The distribution device 26 is configured to distribute (discharge) the article A from the line when at least one of the weights of the one or more articles A is not within a predetermined weight range. . The distribution device 26 is disposed downstream of the transport unit 21 in the transport direction. The distribution device 26 can switch non-discharge or discharge (all discharge) of the article A based on a signal from the control device 90. The sorting device 26 is, for example, a drop conveyor arranged along the transport direction. In this case, the sorting device 26 can switch between non-discharge and discharge of the article A by swinging the downstream side in the transport direction with the upstream side in the transport direction as a fulcrum. For example, the distributing device 26 is swung so as to be inclined downward from the upstream side to the downstream side in the transport direction, so that the transported article A is discharged. The sorting device 26 is not limited to a drop conveyor, and may be, for example, a shuttle conveyor that drops and discharges the article A by expanding and contracting in the extending direction.
　振分装置２６は、制御装置９０によって制御されて、その重量が所定の重量範囲にないと判断された物品Ａを含むように、複数の物品Ａを排出する。たとえば、Ｘ線透過画像に含まれた物品Ａのすべてが排出されてもよいし、少なくともその重量が所定の重量範囲にないと判断された物品Ａを含み、当該物品Ａの付近（搬送方向の前後）にあるその他の物品Ａが排出されてもよい。なお、振分装置２６が１つの物品Ａのみを排出する機構および精度を有する場合であれば、振分装置２６は、その重量が所定の重量範囲にないと判断された物品Ａのみを排出するように構成されてもよい。 The distribution device 26 is controlled by the control device 90 and discharges a plurality of articles A so as to include the articles A whose weights are determined to be out of the predetermined weight range. For example, all of the articles A included in the X-ray transmission image may be discharged, or at least include the articles A whose weight is determined not to be within the predetermined weight range, and the vicinity of the articles A (in the transport direction). Other articles A located before and after) may be discharged. If the distribution device 26 has a mechanism and accuracy for discharging only one article A, the distribution device 26 discharges only the article A whose weight is determined to be out of the predetermined weight range. It may be configured as follows.
　制御装置９０は、重量計測装置２０から出力された各物品Ａの計測結果を入力し、振分装置２６を制御する装置である。制御装置９０は、ＣＰＵ、ＲＯＭ、ＲＡＭ等で構成されている。図２に示されるように、制御装置９０は、生産システム１（包装検査装置１Ａ）における各種制御処理を実行する概念的な部分としての重量取得部９１と、重量範囲変更部９２と、重量分布算出部９３と、制御部９４と、を有している。このような概念的な部分は、例えばＲＯＭに格納されているプログラムがＲＡＭ上にロードされてＣＰＵで実行されるソフトウェアとして構成することができる。制御装置９０は、電子回路等によるハードウェアとして構成されてもよい。 The control device 90 is a device that inputs the measurement result of each article A output from the weight measurement device 20 and controls the distribution device 26. The control device 90 includes a CPU, a ROM, a RAM, and the like. As shown in FIG. 2, the control device 90 includes a weight acquisition unit 91 as a conceptual part that executes various control processes in the production system 1 (the packaging inspection device 1A), a weight range change unit 92, and a weight distribution. It has a calculation unit 93 and a control unit 94. Such a conceptual portion can be configured, for example, as software that a program stored in a ROM is loaded on a RAM and executed by a CPU. The control device 90 may be configured as hardware such as an electronic circuit.
　制御装置９０は、重量計測装置２０に組み込まれてもよいし、振分装置２６に組み込まれてもよい。制御装置９０の各機能が、重量計測装置２０と振分装置２６に分散して組み込まれてもよい。制御装置９０は、独立して設置されてもよい。重量計測装置２０および振分装置２６の上位の管理装置が、制御装置９０を含んでもよい。 The control device 90 may be incorporated in the weight measuring device 20 or may be incorporated in the distribution device 26. Each function of the control device 90 may be dispersedly incorporated in the weight measurement device 20 and the distribution device 26. The control device 90 may be installed independently. A higher-level management device of the weight measurement device 20 and the distribution device 26 may include the control device 90.
　重量取得部９１は、計測結果に示される各物品Ａの重量を取得する。重量取得部９１は、各物品Ａの重量を取得すると、それらの重量を重量分布算出部９３および制御部９４に出力する。重量範囲変更部９２は、制御部９４における判断基準となる所定の重量範囲を記憶している。重量範囲変更部９２は、たとえば、所定の重量範囲の下限値および上限値を記憶している。重量範囲変更部９２に記憶された所定の重量範囲は、変更可能である。重量範囲変更部９２は、個数検査装置７０から出力される個数検査の結果に基づいて、所定の重量範囲を変更する、または、維持する。このように、制御装置９０は、所定の重量範囲を制御する。制御装置９０は、個数検査装置７０による個数検査の結果に基づいて、所定の範囲を変更する。 The weight obtaining unit 91 obtains the weight of each article A indicated in the measurement result. Upon obtaining the weight of each article A, the weight obtaining section 91 outputs the weight to the weight distribution calculating section 93 and the control section 94. The weight range changing unit 92 stores a predetermined weight range serving as a criterion in the control unit 94. The weight range changing unit 92 stores, for example, a lower limit value and an upper limit value of a predetermined weight range. The predetermined weight range stored in the weight range changing unit 92 can be changed. The weight range changing unit 92 changes or maintains a predetermined weight range based on the result of the number inspection output from the number inspection device 70. Thus, the control device 90 controls the predetermined weight range. The control device 90 changes the predetermined range based on the result of the number inspection by the number inspection device 70.
　重量分布算出部９３は、重量取得部９１から出力された各物品Ａの重量を入力すると、それらの重量が、重量範囲変更部９２に記憶された所定の重量範囲内であるか範囲外であるかに基づき、振分装置２６を通過した（すなわち振分装置２６によって排出されなかった）物品Ａの重量分布を算出する。重量分布算出部９３は、たとえば、振分装置２６を通過した物品Ａの平均重量を算出する。重量分布算出部９３は、これらの演算を行うため、振分装置２６を通過して残る物品Ａと、振分装置２６によって振り分けられた物品Ａとを、それらの重量に対応させて判別可能になっている。 When the weight distribution calculation unit 93 receives the weight of each article A output from the weight acquisition unit 91, the weight is within or outside the predetermined weight range stored in the weight range change unit 92. Then, the weight distribution of the article A that has passed through the distribution device 26 (that is, has not been discharged by the distribution device 26) is calculated. The weight distribution calculation unit 93 calculates, for example, the average weight of the article A that has passed through the distribution device 26. The weight distribution calculation unit 93 performs these calculations, so that the articles A remaining after passing through the sorting apparatus 26 and the articles A sorted by the sorting apparatus 26 can be distinguished according to their weights. Has become.
　制御部９４は、重量取得部９１から出力された各物品Ａの重量を入力すると、それらの重量が、重量分布算出部９３に記憶された所定の重量範囲内であるか範囲外であるかを判断する。制御部９４は、たとえば、少なくとも１つの物品Ａが所定の重量範囲を超えている（重量範囲内ではない）と判断すると、振分装置２６を制御して、その重量が所定の重量範囲にないと判断された物品Ａを含むように、複数の物品Ａを排出させる。なお、制御部９４は、振分装置２６を制御して、その重量が所定の重量範囲にないと判断された物品Ａのみを排出させてもよい。 When the weight of each article A output from the weight acquisition unit 91 is input, the control unit 94 determines whether the weight is within the predetermined weight range stored in the weight distribution calculation unit 93 or out of the predetermined range. to decide. For example, when determining that at least one article A exceeds the predetermined weight range (not within the weight range), the control unit 94 controls the distribution device 26 so that the weight is not within the predetermined weight range. The plurality of articles A are discharged so as to include the article A determined to be. Note that the control unit 94 may control the distribution device 26 to discharge only the articles A whose weight is determined to be out of the predetermined weight range.
　図４に示されるように、搬送装置３０は、重量計測装置２０から複数の組合せ計量装置４０のそれぞれにまで物品Ａを搬送し、組合せ計量装置４０に物品Ａを供給する。搬送装置３０は、第１搬送部３１と、第２搬送部３２と、第３搬送部３３と、第４搬送部３４と、を有している。第１搬送部３１、第２搬送部３２、第３搬送部３３及び第４搬送部３４のそれぞれは、例えば、振動によって物品Ａを搬送する。 As shown in FIG. 4, the transport device 30 transports the article A from the weight measuring device 20 to each of the plurality of combination weighing devices 40 and supplies the article A to the combination weighing device 40. The transport device 30 includes a first transport unit 31, a second transport unit 32, a third transport unit 33, and a fourth transport unit 34. Each of the first transport unit 31, the second transport unit 32, the third transport unit 33, and the fourth transport unit 34 transports the article A by, for example, vibration.
　第１搬送部３１は、重量計測装置２０を通過した物品Ａを、第２搬送部３２、第３搬送部３３及び第４搬送部３４に対して搬送する主搬送路である。第１搬送部３１は、例えば、複数の組合せ計量装置４０の配列方向に沿って延在している。 The first transport unit 31 is a main transport path that transports the article A that has passed through the weight measuring device 20 to the second transport unit 32, the third transport unit 33, and the fourth transport unit 34. The first transport unit 31 extends, for example, along the direction in which the plurality of combination weighing devices 40 are arranged.
　第２搬送部３２、第３搬送部３３及び第４搬送部３４は、第１搬送部３１から分岐して物品Ａを搬送する副搬送路である。第２搬送部３２、第３搬送部３３及び第４搬送部３４のそれぞれは、対応する組合せ計量装置４０に物品Ａを搬送する。第２搬送部３２は、第１搬送部３１の搬送方向の上流側に接続されている。第３搬送部３３は、第１搬送部３１において、第２搬送部３２よりも搬送方向の下流側に接続されている。第４搬送部３４は、第１搬送部３１において、第３搬送部３３よりも搬送方向の下流側に接続されている。 The second transport unit 32, the third transport unit 33, and the fourth transport unit 34 are sub-transport paths that branch off from the first transport unit 31 and transport the article A. Each of the second transport section 32, the third transport section 33, and the fourth transport section 34 transports the article A to the corresponding combination weighing device 40. The second transport section 32 is connected to the first transport section 31 on the upstream side in the transport direction. The third transport section 33 is connected to the first transport section 31 on the downstream side of the second transport section 32 in the transport direction. The fourth transport unit 34 is connected to the first transport unit 31 on the downstream side of the third transport unit 33 in the transport direction.
　複数の組合せ計量装置４０のそれぞれは、振分装置２６を通過したライン内の複数の物品Ａを組合せ計量する。複数の組合せ計量装置４０のそれぞれは、同じ構成を有している。以下の説明では、搬送装置３０の第２搬送部３２から物品Ａの供給を受ける一の組合せ計量装置４０を一例に具体的に説明する。 Each of the plurality of combination weighing devices 40 combines and weighs a plurality of articles A in a line that has passed through the distribution device 26. Each of the plurality of combination weighing devices 40 has the same configuration. In the following description, one combination weighing device 40 that receives the supply of the article A from the second transport unit 32 of the transport device 30 will be specifically described as an example.
　図５に示されるように、組合せ計量装置４０は、投入シュート４１と、分散テーブル４２と、複数の放射フィーダ４３と、複数のプールホッパ４４と、複数の計量ホッパ４５と、ロードセル４５Ａと、複数のブースタホッパ４６と、集合シュート４７と、タイミングホッパ４８と、制御部４９と、を有している。組合せ計量装置４０は、搬送装置３０によって供給される物品Ａを目標計量値となるように計量して製袋包装装置５０に供給する。 As shown in FIG. 5, the combination weighing device 40 includes a charging chute 41, a distribution table 42, a plurality of radiation feeders 43, a plurality of pool hoppers 44, a plurality of weighing hoppers 45, a load cell 45A, , A collective chute 47, a timing hopper 48, and a control unit 49. The combination weighing device 40 weighs the article A supplied by the transport device 30 so as to have a target weighing value and supplies the weighed article A to the bag making and packaging device 50.
　投入シュート４１は、第２搬送部３２の搬送端の下方に配置されている。投入シュート４１は、上方及び下方に開口が形成された内空部を有する筒状の部材である。投入シュート４１の内空部には、第２搬送部３２の搬送端から落下した物品Ａが投入される。内空部に落下した物品Ａは、下方の開口を介して分散テーブル４２に排出される。 (4) The input chute 41 is disposed below the transport end of the second transport section 32. The charging chute 41 is a cylindrical member having an inner space with openings formed above and below. The article A dropped from the transport end of the second transport section 32 is loaded into the inner space of the loading chute 41. The article A that has fallen into the inner space is discharged to the distribution table 42 through the lower opening.
　分散テーブル４２は、投入シュート４１の下方に配置されている。分散テーブル４２は、下方に向かって末広がりの円錐状の搬送面を有している。分散テーブル４２は、搬送面が回転することによって、投入シュート４１から排出された物品Ａを放射フィーダ４３に対して搬送する。複数の放射フィーダ４３は、分散テーブル４２の外縁に沿って放射状に配置されている。各放射フィーダ４３は、振動によって、物品Ａをプールホッパ４４に対して搬送する。 The dispersion table 42 is arranged below the input chute 41. The distribution table 42 has a conical transport surface that diverges downward. The distribution table 42 conveys the articles A discharged from the input chute 41 to the radiation feeder 43 by rotating the conveying surface. The plurality of radial feeders 43 are radially arranged along the outer edge of the distribution table 42. Each radiation feeder 43 conveys the article A to the pool hopper 44 by vibration.
　各プールホッパ４４は、各放射フィーダ４３の先端部の下方に配置されている。各プールホッパ４４は、対応する放射フィーダ４３から排出された物品Ａを一時的に貯留すると共に、一時的に貯留した物品Ａを下方に排出する。各計量ホッパ４５は、各プールホッパ４４の下方に配置されている。各計量ホッパ４５は、対応するプールホッパ４４から排出された物品Ａを一時的に貯留すると共に、一時的に貯留した物品Ａを下方に排出する。 プ ー ル Each pool hopper 44 is arranged below the tip of each radiation feeder 43. Each pool hopper 44 temporarily stores the articles A discharged from the corresponding radiation feeder 43 and discharges the temporarily stored articles A downward. Each weighing hopper 45 is arranged below each pool hopper 44. Each weighing hopper 45 temporarily stores the articles A discharged from the corresponding pool hopper 44, and discharges the temporarily stored articles A downward.
　複数のロードセル４５Ａは、フレームＦ内に配置されている。各ロードセル４５Ａは、対応する計量ホッパ４５を支持する。各ロードセル４５Ａは、各計量ホッパ４５に物品Ａが一時的に貯留されている際に、当該物品Ａの重量に応じた計量値を計量する。各ブースタホッパ４６は、各計量ホッパ４５の下方に配置されている。各ブースタホッパ４６は、対応する計量ホッパ４５から排出された物品Ａを一時的に貯留すると共に、一時的に貯留した物品Ａを下方に排出する。 (4) The plurality of load cells 45A are arranged in the frame F. Each load cell 45A supports a corresponding weighing hopper 45. Each of the load cells 45A measures a weighing value according to the weight of the article A when the article A is temporarily stored in each weighing hopper 45. Each booster hopper 46 is arranged below each weighing hopper 45. Each booster hopper 46 temporarily stores the articles A discharged from the corresponding weighing hopper 45 and discharges the temporarily stored articles A downward.
　集合シュート４７は、下方に向かって先細りの円錐台の筒状に形成されている。集合シュート４７は、全ての計量ホッパ４５及び全てのブースタホッパ４６の下方に位置するように配置されている。集合シュート４７は、各計量ホッパ４５から排出された物品Ａ、及び各ブースタホッパ４６から排出された物品Ａを受けて下方に排出する。タイミングホッパ４８は、集合シュート４７の下方に配置されている。タイミングホッパ４８は、集合シュート４７から排出された物品Ａを一時的に貯留すると共に、一時的に貯留した物品Ａを製袋包装装置５０に排出する。 The collecting chute 47 is formed in a truncated conical cylindrical shape that tapers downward. The collecting chute 47 is disposed so as to be located below all the weighing hoppers 45 and all the booster hoppers 46. The collecting chute 47 receives the articles A discharged from the respective weighing hoppers 45 and the articles A discharged from the respective booster hoppers 46 and discharges them downward. The timing hopper 48 is arranged below the collecting chute 47. The timing hopper 48 temporarily stores the articles A discharged from the collecting chute 47 and discharges the temporarily stored articles A to the bag making and packaging apparatus 50.
　制御部４９は、例えば、フレームＦ内に配置されている。制御部４９は、組合せ計量装置４０における各種動作を制御する機器であり、ＣＰＵ、ＲＯＭ、およびＲＡＭ等で構成されている。制御部４９は、組合せ計量を行う。制御部４９は、ロードセル４５Ａによって計量され且つ複数の計量ホッパ４５及び／又はブースタホッパ４６にそれぞれ対応付けられた複数の計量値から、合計値が目標計量値となるように計量値の組合せを選択する。具体的には、制御部４９は、ロードセル４５Ａによって出力された複数の計量値から、目標計量値（目標値）を組合せ下限値とする所定範囲内に合計値が収まるように計量値の組合せを選択する（組合せ計算を行う）。制御部４９は、当該組合せに対応する計量ホッパ４５及び／又はブースタホッパ４６に物品Ａを排出させる。組合せ計量装置４０は、組合せ計量された複数の物品Ａを製袋包装装置５０に供給する。 The control unit 49 is arranged, for example, in the frame F. The control unit 49 is a device that controls various operations of the combination weighing device 40, and includes a CPU, a ROM, a RAM, and the like. The control unit 49 performs combination weighing. The control unit 49 selects a combination of weighing values from a plurality of weighing values measured by the load cell 45A and associated with the plurality of weighing hoppers 45 and / or the booster hoppers 46 so that the total value becomes the target weighing value. I do. Specifically, the control unit 49 determines the combination of the measured values from the plurality of measured values output by the load cell 45A so that the total value falls within a predetermined range in which the target measured value (target value) is the combination lower limit. Select (perform combination calculation). The control unit 49 causes the weighing hopper 45 and / or the booster hopper 46 corresponding to the combination to discharge the article A. The combination weighing device 40 supplies the plurality of combined-weighed articles A to the bag making and packaging device 50.
　図１に示されるように、製袋包装装置５０は、フィルムを所定容量の袋に成形しつつ、組合せ計量装置４０によって計量されて供給された複数の物品Ａを袋に包装する。すなわち、製袋包装装置５０は、振分装置２６を通過したライン内の複数の物品Ａであって、組合せ計量装置４０によって組合せ計量された複数の物品Ａを袋に包装する。各製袋包装装置５０から排出された商品Ｂは、搬送装置５２によって合流され、重量検査装置６０に搬送される。重量検査装置６０は、物品Ａが内包された商品Ｂの重量を検査する。 As shown in FIG. 1, the bag making and packaging apparatus 50 packs a plurality of articles A measured and supplied by the combination weighing apparatus 40 into a bag while forming the film into a bag having a predetermined capacity. That is, the bag making and packaging apparatus 50 packs a plurality of articles A in the line that has passed through the distribution apparatus 26 and combined and weighed by the combination weighing apparatus 40 into bags. The goods B discharged from each bag-making and packaging apparatus 50 are combined by the transport apparatus 52 and transported to the weight inspection apparatus 60. The weight inspection device 60 inspects the weight of the product B in which the article A is included.
　個数検査装置７０は、Ｘ線検査装置であり、商品Ｂおよびその中の複数の物品ＡにＸ線を照射することによって商品Ｂを検査する。個数検査装置７０は、商品Ｂを搬送しつつ商品ＢのＸ線透過画像を生成し、Ｘ線透過画像に基づいて商品Ｂの検査を行う。個数検査装置７０は、商品Ｂの中の複数の物品Ａの個数を検査する。個数検査装置７０は、物品Ａおよび商品Ｂに対して定められた所望の個数（袋内の物品Ａの個数）を記憶している。 The number inspection device 70 is an X-ray inspection device, and inspects the product B by irradiating the product B and a plurality of articles A therein with X-rays. The number inspection device 70 generates an X-ray transmission image of the product B while conveying the product B, and inspects the product B based on the X-ray transmission image. The number inspection device 70 inspects the number of the plurality of articles A in the product B. The number inspection device 70 stores a desired number (the number of the articles A in the bag) determined for the articles A and the articles B.
　図６に示されるように、個数検査装置７０は、搬送部７１と、Ｘ線照射部７２と、Ｘ線検出部７３と、制御部７４と、を有している。搬送部７１、Ｘ線照射部７２及びＸ線検出部７３は、重量計測装置２０の搬送部２１、Ｘ線照射部２２及びＸ線検出部２３のそれぞれと同様の構成である。 As shown in FIG. 6, the number inspection device 70 has a transport unit 71, an X-ray irradiation unit 72, an X-ray detection unit 73, and a control unit 74. The transport unit 71, the X-ray irradiator 72, and the X-ray detector 73 have the same configurations as the transport unit 21, the X-ray irradiator 22, and the X-ray detector 23 of the weight measuring device 20, respectively.
　制御部７４は、個数検査装置７０の各部の動作を制御する。制御部７４は、ＣＰＵ、ＲＯＭ、ＲＡＭ等で構成されている。制御部７４には、Ｘ線検出部７３のＸ線の検出結果が入力される。制御部７４は、Ｘ線の検出結果に基づいて、Ｘ線透過画像を作成する。 The control unit 74 controls the operation of each unit of the number inspection device 70. The control unit 74 includes a CPU, a ROM, a RAM, and the like. The control unit 74 receives an X-ray detection result of the X-ray detection unit 73. The control unit 74 creates an X-ray transmission image based on the X-ray detection result.
　制御部７４は、Ｘ線透過画像を所定の閾値で二値化して、二値化画像を生成する。重量計測装置２０は、二値化画像における個々の物品Ａの濃淡情報に基づいて、物品Ａの個数を検出する。物品Ａの個数の検出には、あらゆる公知の方法を用いることができる。制御部７４は、例えば、二値化画像の濃淡情報に基づいて物品Ａを個々に分断し、物品Ａの個数を検出する。制御部７４は、検査結果（物品Ａの個数）を制御装置９０に出力する。 The control unit 74 binarizes the X-ray transmission image with a predetermined threshold to generate a binarized image. The weight measuring device 20 detects the number of the articles A based on the density information of each article A in the binarized image. Any known method can be used to detect the number of articles A. The control unit 74 divides the articles A individually based on, for example, density information of the binarized image, and detects the number of the articles A. The control unit 74 outputs the inspection result (the number of articles A) to the control device 90.
　図１および図２に示されるように、箱詰装置８０は、商品Ｂを段ボール箱に詰める装置である。 箱 As shown in FIGS. 1 and 2, the box packing device 80 is a device for packing the product B in a cardboard box.
　続いて、図７を参照して、本実施形態の包装検査装置１Ａおよび生産システム１において実行される所定の処理（制御方法）について説明する。まず、制御装置９０の重量取得部９１は、重量計測装置２０から出力された各物品Ａの計測結果を入力し、計測結果に示される各物品Ａの重量を取得する（ステップＳ０１）。重量取得部９１は、各物品Ａの重量を制御部９４に出力する。制御部９４は、各物品Ａの重量を入力すると、それらの重量が、重量分布算出部９３に記憶された所定の重量範囲内であるか否かを判断する（ステップＳ０２）。制御部９４は、少なくとも１つの物品Ａが所定の重量範囲内ではないと判断すると、振分装置２６を制御して、その重量が所定の重量範囲にないと判断された物品Ａを含むように、たとえば複数の物品Ａを排出させる（ステップＳ０３）。 Next, a predetermined process (control method) executed in the packaging inspection apparatus 1A and the production system 1 of the present embodiment will be described with reference to FIG. First, the weight acquisition unit 91 of the control device 90 inputs the measurement result of each article A output from the weight measuring device 20, and acquires the weight of each article A indicated in the measurement result (Step S01). The weight obtaining unit 91 outputs the weight of each article A to the control unit 94. When the weight of each article A is input, the control section 94 determines whether or not the weight is within a predetermined weight range stored in the weight distribution calculation section 93 (step S02). When determining that at least one article A is not within the predetermined weight range, the control unit 94 controls the distribution device 26 to include the article A whose weight is determined not to be within the predetermined weight range. For example, a plurality of articles A are discharged (step S03).
　制御部９４が、判断対象とされたすべての物品Ａが所定の重量範囲内であると判断すると、重量範囲変更部９２が、個数検査装置７０から出力される個数検査の結果が正常であるか否かを判断する（ステップＳ０４）。ここで、個数検査装置７０は、商品Ｂごとに、袋内の物品Ａの個数が所望の個数と同じであったか、または所望の個数より多かったか、または所望の個数より多かったかを判断し、その判断結果を記憶している。個数検査装置７０は、袋内の物品Ａの個数が所望の個数より１以上大きかったことを個数超過と判断してもよいし、袋内の物品Ａの個数が所望の個数より２以上大きかったことを個数超過と判断してもよい。個数検査装置７０は、袋内の物品Ａの個数が所望の個数より１以上少なかったことを個数不足と判断してもよいし、袋内の物品Ａの個数が所望の個数より２以上少なかったことを個数不足と判断してもよい。その場合、個数超過または個数不足と判断するための個数差の閾値（たとえば、２以上の整数）が設定されている。このような個数検査の厳しさ（個数差の閾値の大きさ）は、求められる個数の精度に応じて定められることができる。個数検査装置７０は、個数検査の結果、個数超過と判断した頻度、および、個数不足と判断した頻度を記憶している。個数検査装置７０は、これらの頻度情報を個数検査の結果に含めて、個数検査の結果を重量範囲変更部９２に出力する。 When the control unit 94 determines that all the articles A to be determined are within the predetermined weight range, the weight range changing unit 92 checks whether the result of the number inspection output from the number inspection device 70 is normal. It is determined whether or not it is (step S04). Here, the number inspection device 70 determines, for each product B, whether the number of the articles A in the bag was the same as the desired number, was larger than the desired number, or was larger than the desired number. The judgment result is stored. The number inspection device 70 may determine that the number of the articles A in the bag is one or more larger than the desired number as excess, or the number of the articles A in the bag is two or more larger than the desired number. It may be determined that the number is excessive. The number inspection device 70 may determine that the number of the articles A in the bag is one or more less than the desired number as an insufficient number, or the number of the articles A in the bag is two or more less than the desired number. It may be determined that the number is insufficient. In that case, a threshold value (for example, an integer of 2 or more) of the number difference for determining that the number is excessive or insufficient is set. The severity of such a number inspection (the size of the threshold value of the number difference) can be determined according to the required accuracy of the number. The number inspection device 70 stores, as a result of the number inspection, the frequency at which the number is determined to be excessive and the frequency at which the number is determined to be insufficient. The number inspection device 70 includes the frequency information in the result of the number inspection, and outputs the result of the number inspection to the weight range changing unit 92.
　重量範囲変更部９２は、個数超過または個数不足に関する頻度閾値を記憶している。頻度閾値は、個数超過および個数不足のそれぞれに対して、たとえば、個別に設定される。ステップＳ０４において、重量範囲変更部９２は、個数超過の頻度および個数不足の頻度の両方が、それぞれの頻度閾値より小さい場合は、個数検査の結果が正常であると判断して、重量維持制御を行う（ステップＳ０５）。この場合、重量範囲変更部９２は、所定の重量範囲を維持する。すなわち、重量範囲変更部９２は、後述する所定の重量範囲の下限値ＷＬおよび上限値ＷＨを変更しない。その結果、物品Ａの平均重量ＷＡｖｊが、変化せず、維持される。 The weight range changing unit 92 stores a frequency threshold value related to excess or insufficient number. The frequency threshold is set individually for each of the number excess and the number shortage, for example. In step S04, when both the frequency of excess number and the frequency of insufficient number are smaller than the respective frequency thresholds, the weight range changing unit 92 determines that the result of the number inspection is normal, and performs the weight maintenance control. Perform (Step S05). In this case, the weight range changing unit 92 maintains a predetermined weight range. Ie the weight range change unit 92 does not change the lower limit value W L and the upper limit value W H of a predetermined weight range to be described later. As a result, the average weight W Avj of the article A does not change and is maintained.
　重量範囲変更部９２は、個数超過の頻度が、個数超過に関する頻度閾値以上である（すなわち一定以上である）と判断した場合は、重量増大制御を行う（ステップＳ０６）。この場合、重量範囲変更部９２は、物品Ａの平均重量が増大するように、所定の重量範囲を変更する。より詳細には、重量範囲変更部９２は、図８（ａ）に記載されるように、所定の重量範囲の下限値ＷＬおよび上限値ＷＨを記憶している。重量範囲変更部９２は、図８（ｂ）に記載されるように、たとえば下限値ＷＬを増大させて、下限値ＷＬ´とする。これにより、重量範囲変更部９２は、物品Ａの平均重量ＷＡｖｊを平均重量ＷＡｖｊ´に増大させる。重量分布算出部９３と重量範囲変更部９２の間で、物品Ａの平均重量の変化に関するフィードバック制御が行われてもよい。なお、図８（ｂ）には、変更前の下限値ＷＬと変更前の平均重量ＷＡｖｊとが、変更後の各価とともに併記されている。 If the weight range changing unit 92 determines that the frequency of excess number is equal to or higher than the frequency threshold relating to excess number (that is, equal to or higher than a certain value), the weight range changing unit 92 performs weight increase control (step S06). In this case, the weight range changing unit 92 changes the predetermined weight range so that the average weight of the article A increases. More particularly, weight range change unit 92, as described in FIG. 8 (a), stores the lower limit value W L and the upper limit value W H of a predetermined weight range. Weight range change unit 92, as described in FIG. 8 (b), for example by increasing the lower limit value W L, the lower limit value W L '. Accordingly, the weight range changing unit 92 increases the average weight W Avj of the article A to the average weight W Avj ′. Feedback control regarding a change in the average weight of the article A may be performed between the weight distribution calculation unit 93 and the weight range change unit 92. Incidentally, in FIG. 8 (b), and the average weight W AVJ before change the lower limit value W L before the change, and is also shown with each value after the change.
　重量範囲変更部９２は、個数不足の頻度が、個数不足に関する頻度閾値以上である（すなわち一定以上である）と判断した場合は、重量減少制御を行う（ステップＳ０７）。この場合、重量範囲変更部９２は、物品Ａの平均重量が減少するように、所定の重量範囲を変更する。より詳細には、重量範囲変更部９２は、たとえば上限値ＷＨを減少させることにより、物品Ａの平均重量ＷＡｖｊを減少させる。重量減少制御は、図８（ｂ）で示された重量増大制御と、重量範囲の変更の仕方が逆である点を除いて同様である。したがって重量減少制御を説明するための図は省略されている。重量分布算出部９３と重量範囲変更部９２の間で、物品Ａの平均重量の変化に関するフィードバック制御が行われてもよい。 When the weight range changing unit 92 determines that the frequency of the number shortage is equal to or higher than the frequency threshold relating to the number shortage (that is, is equal to or higher than a certain value), the weight range changing unit 92 performs weight reduction control (step S07). In this case, the weight range changing unit 92 changes the predetermined weight range so that the average weight of the article A decreases. More particularly, weight range change unit 92, for example by reducing the upper limit value W H, reducing the average weight W AVJ article A. The weight reduction control is the same as the weight increase control shown in FIG. 8B except that the manner of changing the weight range is reversed. Therefore, a diagram for explaining the weight reduction control is omitted. Feedback control regarding a change in the average weight of the article A may be performed between the weight distribution calculation unit 93 and the weight range change unit 92.
　なお、ステップＳ０６の重量増大制御、および、ステップＳ０７の重量減少制御における所定の重量範囲の変更態様は、上記に限られない。重量範囲変更部９２は、下限値ＷＬおよび上限値ＷＨの両方を変更してもよい。重量範囲変更部９２は、重量分布算出部９３において算出される物品Ａの平均重量に関係なく、平均重量以外の重量分布に関する別の指標を基準にして制御を行ってもよい。 The manner of changing the predetermined weight range in the weight increase control in step S06 and the weight decrease control in step S07 is not limited to the above. The weight range changing unit 92 may change both the lower limit WL and the upper limit WH . The weight range changing unit 92 may perform control based on another index related to the weight distribution other than the average weight, regardless of the average weight of the article A calculated by the weight distribution calculation unit 93.
　生産システム１では、上述した一連の処理が繰り返される。生産システム１では、個数検査の結果に基づいて、重量計測装置２０および振分装置２６における所定の重量範囲が変更されるため、結果として、製袋包装装置５０において袋に包装される物品Ａの数が均一に保たれる。 In the production system 1, the above-described series of processing is repeated. In the production system 1, the predetermined weight range in the weight measuring device 20 and the sorting device 26 is changed based on the result of the number inspection. The numbers are kept uniform.
　続いて、生産システム１（制御方法）を実現させるための制御プログラムＰについて説明する。図９に示されるように、制御プログラムＰは、コンピュータ読み取り可能な記録媒体１００に記録され得る。記録媒体１００に格納された制御プログラムＰは、重量取得モジュールＭ１と、重量範囲変更モジュールＭ２と、重量分布算出モジュールＭ３とを備える。重量取得モジュールＭ１、重量範囲変更モジュールＭ２及び重量分布算出モジュールＭ３をコンピュータに実行させることにより、制御プログラムＰが機能する。重量取得モジュールＭ１、重量範囲変更モジュールＭ２及び重量分布算出モジュールＭ３を実行することにより実現される機能はそれぞれ、重量取得部９１、重量範囲変更部９２及び重量分布算出部９３の機能と同様である。 Next, the control program P for realizing the production system 1 (control method) will be described. As shown in FIG. 9, the control program P can be recorded on a computer-readable recording medium 100. The control program P stored in the recording medium 100 includes a weight acquisition module M1, a weight range change module M2, and a weight distribution calculation module M3. The control program P functions by causing a computer to execute the weight acquisition module M1, the weight range change module M2, and the weight distribution calculation module M3. The functions realized by executing the weight obtaining module M1, the weight range changing module M2, and the weight distribution calculating module M3 are the same as the functions of the weight obtaining unit 91, the weight range changing unit 92, and the weight distribution calculating unit 93, respectively. .
　制御プログラムＰは、記録媒体１００におけるプログラム記録領域に記録されている。記録媒体１００は、例えば、ＣＤ－ＲＯＭ、ＤＶＤ、ＲＯＭ、半導体メモリ等の記録媒体によって構成されている。制御プログラムＰは、搬送波に重畳されたコンピュータデータ信号として通信ネットワークを介して提供されてもよい。 The control program P is recorded in a program recording area of the recording medium 100. The recording medium 100 is configured by a recording medium such as a CD-ROM, a DVD, a ROM, and a semiconductor memory. The control program P may be provided via a communication network as a computer data signal superimposed on a carrier wave.
　以上説明した生産システム１、包装検査装置１Ａ、制御方法、および制御プログラムＰによれば、重量計測装置２０および振分装置２６を経て、製袋包装装置５０によって複数の物品Ａが袋に包装される。続いて、袋内の物品Ａの個数が個数検査装置７０によって検査される。個数検査の結果に基づいて、包装検査装置１Ａの制御装置９０によって、振分装置２６において用いられる所定の重量範囲が変更される。これにより、振分装置２６を通過する物品Ａの重量が変更される。つまり、製袋包装装置５０による包装の対象となる物品Ａの重量分布が変更される。物品Ａの重量分布が変更されることにより、製袋包装装置５０によって包装される物品Ａの個数が変化し得る。たとえば、重量分布が重い側に変更されると、製袋包装装置５０によって包装される物品Ａの個数が減少し得る。重量分布が軽い側に変更されると、製袋包装装置５０によって包装される物品Ａの個数が増大し得る。生産システム１、包装検査装置１Ａ、制御方法、および制御プログラムＰによれば、製袋包装装置５０によって包装される物品Ａの個数を調整することができる。その結果として、袋に包装される物品Ａの数を均一にすることができる。 According to the production system 1, the packaging inspection device 1A, the control method, and the control program P described above, a plurality of articles A are packaged in bags by the bag making and packaging device 50 via the weight measuring device 20 and the distribution device 26. You. Subsequently, the number of articles A in the bag is inspected by the number inspection device 70. Based on the result of the number inspection, the predetermined weight range used in the sorting device 26 is changed by the control device 90 of the packaging inspection device 1A. Thereby, the weight of the article A passing through the distribution device 26 is changed. That is, the weight distribution of the article A to be packaged by the bag making and packaging apparatus 50 is changed. By changing the weight distribution of the article A, the number of the articles A packed by the bag making and packaging apparatus 50 can change. For example, when the weight distribution is changed to a heavy side, the number of articles A packaged by the bag making and packaging apparatus 50 may decrease. If the weight distribution is changed to a lighter side, the number of articles A packaged by the bag making and packaging apparatus 50 may increase. According to the production system 1, the packaging inspection device 1A, the control method, and the control program P, the number of articles A packaged by the bag making and packaging device 50 can be adjusted. As a result, the number of articles A packed in the bag can be made uniform.
　個数検査の結果における個数超過の頻度、または、個数不足の頻度に基づいて、制御装置９０が、物品Ａの平均重量を増大させたり、または、減少させたりする。よって、袋に包装される物品Ａの数をより一層均一にすることができ、個数超過または個数不足の頻度が低減される。 (4) The control device 90 increases or decreases the average weight of the article A based on the frequency of the excess number or the frequency of the insufficient number in the result of the number inspection. Therefore, the number of articles A packed in the bag can be made more uniform, and the frequency of excess or shortage is reduced.
　制御装置９０が、少なくとも下限値ＷＬを増大させることにより、物品Ａの平均重量ＷＡｖｊを増大させ、少なくとも上限値ＷＨを減少させることにより、物品Ａの平均重量ＷＡｖｊを減少させる。よって、物品Ａの平均重量ＷＡｖｊを確実に増大または減少させることができる。 Control device 90, by increasing at least the lower limit value W L, increasing the average weight W AVJ articles A, by reducing at least the upper limit value W H, reducing the average weight W AVJ article A. Therefore, it is possible to reliably increase or decrease the average weight W Avj of the article A.
　重量計測装置２０がＸ線検査装置であるので、物品Ａのそれぞれの重量を高速かつ高精度に計測することができる。 (4) Since the weight measuring device 20 is an X-ray inspection device, the weight of each article A can be measured at high speed and with high accuracy.
　重量計測装置２０と振分装置２６と製袋包装装置５０と個数検査装置７０と制御装置９０とを備える包装検査装置１Ａと、振分装置２６を通過したライン内の複数の物品Ａを組合せ計量する組合せ計量装置４０と、を備える生産システム１によれば、組合せ計量された複数の物品Ａが製袋包装装置５０に供給され、袋に包装される。よって、袋に包装される物品Ａの数のみならず、袋に包装された物品Ａの合計重量をも均一にすることができる。 Combined weighing of a package inspection apparatus 1A including a weight measuring device 20, a distribution device 26, a bag making and packaging device 50, a number inspection device 70, and a control device 90, and a plurality of articles A in a line passing through the distribution device 26. According to the production system 1 including the combination weighing device 40, the plurality of combined weighed articles A are supplied to the bag making and packaging device 50 and packed in bags. Therefore, not only the number of the articles A packaged in the bag but also the total weight of the articles A packaged in the bag can be made uniform.
　以上、本開示の実施形態について説明したが、本発明は上記実施形態に限られない。 Although the embodiments of the present disclosure have been described above, the present invention is not limited to the above embodiments.
　上記実施形態では、搬送装置３０が第１搬送部３１、第２搬送部３２、第３搬送部３３及び第４搬送部３４を有しており、第１搬送部３１から第２搬送部３２、第３搬送部３３及び第４搬送部３４に対して物品Ａが供給される形態を一例に説明した。しかし、搬送装置の構成はこれに限定されない。例えば、搬送装置は、各組合せ計量装置４０に対して独立して搬送路が設けられていてもよい。 In the above embodiment, the transport device 30 includes the first transport unit 31, the second transport unit 32, the third transport unit 33, and the fourth transport unit 34, and the first transport unit 31 to the second transport unit 32, An example in which the article A is supplied to the third transport unit 33 and the fourth transport unit 34 has been described as an example. However, the configuration of the transport device is not limited to this. For example, the transport device may be provided with a transport path independently for each combination weighing device 40.
　上記実施形態では、搬送装置３０の第１搬送部３１、第２搬送部３２、第３搬送部３３及び第４搬送部３４のそれぞれが、振動によって物品Ａを搬送する形態を一例に説明した。しかし、第１搬送部３１、第２搬送部３２、第３搬送部３３及び第４搬送部３４のそれぞれは、例えば、ベルトコンベアであってもよい。 In the above-described embodiment, an example in which the first transport unit 31, the second transport unit 32, the third transport unit 33, and the fourth transport unit 34 of the transport device 30 transport the article A by vibration has been described as an example. However, each of the first transport unit 31, the second transport unit 32, the third transport unit 33, and the fourth transport unit 34 may be, for example, a belt conveyor.
　上記実施形態では、搬送装置３０において、第２搬送部３２、第３搬送部３３及び第４搬送部３４の搬送力を変更することにより、各組合せ計量装置４０に対する物品Ａの供給量を変更する形態を一例に説明した。しかし、第１搬送部３１と第２搬送部３２、第３搬送部３３及び第４搬送部３４との接続部分に、シャッター等を設けることによって、物品Ａの供給量を変更してもよい。 In the above embodiment, the supply amount of the article A to each combination weighing device 40 is changed by changing the transfer force of the second transfer unit 32, the third transfer unit 33, and the fourth transfer unit 34 in the transfer device 30. The form has been described as an example. However, the supply amount of the article A may be changed by providing a shutter or the like at a connection portion between the first transport unit 31 and the second transport unit 32, the third transport unit 33, and the fourth transport unit 34.
　上記実施形態では、生産システム１が、重量計測装置２０、製袋包装装置５０、重量検査装置６０、個数検査装置７０及び箱詰装置８０を備える形態を一例に説明した。しかし、生産システム１は、少なくとも、搬送装置３０及び複数の組合せ計量装置４０を備えていればよい。 In the above embodiment, an example in which the production system 1 includes the weight measuring device 20, the bag making and packaging device 50, the weight inspection device 60, the number inspection device 70, and the box packing device 80 has been described as an example. However, the production system 1 only needs to include at least the transport device 30 and the plurality of combination weighing devices 40.
　上記実施形態では、生産システム１が３台の組合せ計量装置４０を備える形態を一例に説明した。しかし、組合せ計量装置４０の数は、３台に限定されない。組合せ計量装置４０は、１台又は２台であってもよいし、４台以上であってもよい。 In the above embodiment, the example in which the production system 1 includes the three combination weighing devices 40 has been described as an example. However, the number of combination weighing devices 40 is not limited to three. The number of combination weighing devices 40 may be one or two, or may be four or more.
　上記実施形態では、組合せ計量装置４０において、分散テーブル４２の搬送面が回転することによって物品Ａを放射フィーダ４３に対して搬送する形態を一例に説明した。しかし、分散テーブル４２は、振動によって物品Ａを搬送してもよい。また、複数の放射フィーダ４３が振動によって物品Ａを搬送する形態を一例に説明した。しかし、放射フィーダ４３は、回転駆動可能なコイルユニット（スクリュー）、又は、ベルトコンベアによって物品Ａを搬送する形態であってもよい。 In the above-described embodiment, an example has been described in which the combination weighing device 40 conveys the article A to the radiation feeder 43 by rotating the conveyance surface of the distribution table 42. However, the distribution table 42 may convey the article A by vibration. Further, an example in which the plurality of radiation feeders 43 convey the article A by vibration has been described as an example. However, the radiation feeder 43 may be configured such that the article A is conveyed by a rotatable coil unit (screw) or a belt conveyor.
　上記実施形態では、組合せ計量装置４０がブースタホッパ４６を有する形態を一例に説明した。しかし、組合せ計量装置４０は、ブースタホッパ４６を備えていなくてもよい。この場合、制御部４９は、ロードセル４５Ａによって計量され且つ複数の計量ホッパ４５にそれぞれ対応付けられた複数の計量値から、合計値が目標計量値となるように計量値の組合せを選択する。 In the above embodiment, the combination weighing device 40 has the booster hopper 46 as an example. However, the combination weighing device 40 may not include the booster hopper 46. In this case, the control unit 49 selects a combination of weighing values from a plurality of weighing values measured by the load cell 45A and associated with the plurality of weighing hoppers 45 so that the total value becomes the target weighing value.
　生産システムは、製袋包装装置５０によって製袋包装された袋の異常を検知するシール検査装置、及び、商品Ｂに内包された物品Ａへの金属の混入の有無を検査する金属検査装置等を更に備えていてもよい。 The production system includes a seal inspection device that detects an abnormality in a bag made and packaged by the bag making and packaging device 50, a metal inspection device that inspects whether or not metal has mixed into the article A included in the product B, and the like. Further, it may be provided.
　重量計測装置２０は、Ｘ線検査装置とは異なる形式の重量計測装置であってもよい。重量計測装置２０は、搬送部２１上の個々の物品Ａの重量を計測可能な、他の公知の装置であってもよい。物品Ａを計量する計量装置は、上記した組合せ計量装置に限られない。他の公知の計量装置が、本開示の生産システムに適用され得る。生産システム１において、複数の組合せ計量装置４０が省略されてもよい。生産システム１において、何ら計量装置が設けられることなく、振分装置によって振り分けられた複数の物品Ａの一部が、包装装置によって袋に包装されてもよい。 The weight measuring device 20 may be a type of weight measuring device different from the X-ray inspection device. The weight measuring device 20 may be another known device capable of measuring the weight of each article A on the transport unit 21. The weighing device that weighs the article A is not limited to the combination weighing device described above. Other known metering devices can be applied to the production system of the present disclosure. In the production system 1, the plurality of combination weighing devices 40 may be omitted. In the production system 1, a part of the plurality of articles A sorted by the sorting device may be packed in a bag by the packing device without providing any weighing device.
振分装置２６は、たとえば搬送方向に交差する方向に伸縮自在なプッシャーを備え、そのプッシャーの伸縮により物品Ａをラインから排出する装置であってもよい。振分装置２６は、たとえばコンベア上の振分対象の物品Ａを把持可能なアームを備え、そのアームの把持動作により物品Ａをラインから排出する装置であってもよい。 For example, the distribution device 26 may be a device that includes a pusher that can expand and contract in a direction intersecting the transport direction, and that discharges the article A from the line by the expansion and contraction of the pusher. The sorting device 26 may be, for example, a device that includes an arm capable of gripping the articles A to be sorted on the conveyor, and discharges the articles A from the line by the gripping operation of the arm.
　本開示のいくつかの態様によれば、袋に包装される物品の数を均一にすることができる。 According to some aspects of the present disclosure, the number of articles packaged in a bag can be made uniform.
　１…生産システム、１Ａ…包装検査装置、２０…重量計測装置（計測装置）、２６…振分装置、３０…搬送装置、４０…組合せ計量装置、４５…計量ホッパ、４９…制御部、５０…製袋包装装置（包装装置）、６０…重量検査装置、７０…個数検査装置（検査装置）、９０…制御装置、９１…重量取得部、９２…重量範囲変更部、９３…重量分布算出部、９４…制御部、１００…記録媒体、Ａ…物品、Ｂ…商品、Ｐ…制御プログラム、ＷＡｖｊ…平均重量、ＷＬ…下限値、ＷＨ…上限値。 DESCRIPTION OF SYMBOLS 1 ... Production system, 1A ... Packaging inspection device, 20 ... Weight measuring device (measuring device), 26 ... Distributing device, 30 ... Conveying device, 40 ... Combination weighing device, 45 ... Weighing hopper, 49 ... Control part, 50 ... Bag making and packaging device (packing device), 60: weight inspection device, 70: number inspection device (inspection device), 90: control device, 91: weight acquisition unit, 92: weight range change unit, 93: weight distribution calculation unit, 94 ... controller, 100 ... recording medium, A ... article, B ... product, P ... control program, W AVJ ... average weight, W L ... lower limit, W H ... upper limit.

Claims (7)

  1. 　１つ又は複数の物品に対して前記物品のそれぞれの重量を計測する計測装置と、
    　前記物品のそれぞれの重量が所定の重量範囲内にない場合に当該物品をラインから振り分ける振分装置と、
    　前記振分装置を通過した前記ライン内の複数の前記物品を袋に包装する包装装置と、
    　前記袋に包装された複数の前記物品の個数を検査する検査装置と、
    　前記所定の重量範囲を制御する制御装置と、
    を備え、
    　前記制御装置は、前記検査装置による個数検査の結果に基づいて前記所定の重量範囲を変更する、包装検査装置。     A measuring device for measuring the weight of each of the articles relative to one or more articles,
    A sorting device that sorts the article from the line when the weight of each of the articles is not within a predetermined weight range,
    A packaging device that packages a plurality of the articles in the line that has passed through the distribution device into bags,
    An inspection device for inspecting the number of the plurality of articles packaged in the bag,
    A control device for controlling the predetermined weight range;
    With
    The packaging inspection device, wherein the control device changes the predetermined weight range based on a result of the number inspection by the inspection device.
  2. 　前記制御装置は、
    　　前記検査装置による前記個数検査の結果において、前記物品の個数が所定の個数よりも多い個数超過の頻度が一定以上である場合、前記物品の平均重量が増大するよう前記所定の重量範囲を変更し、
    　　前記検査装置による前記個数検査の結果において、前記物品の個数が前記所定の個数よりも少ない個数不足の頻度が一定以上である場合、前記物品の平均重量が減少するよう前記所定の重量範囲を変更する、請求項１に記載の包装検査装置。     The control device includes:
    In the result of the number inspection by the inspection device, when the number of the articles is more than a predetermined number, the frequency of exceeding the number is equal to or more than a predetermined number, the predetermined weight range is changed so that the average weight of the articles increases. ,
    In the result of the number inspection by the inspection device, if the number of the articles is less than the predetermined number and the frequency of the number shortage is equal to or more than a certain number, the predetermined weight range is changed so that the average weight of the articles decreases. The packaging inspection device according to claim 1, which performs the inspection.
  3. 　前記制御装置は、前記所定の重量範囲の下限値および上限値を記憶しており、
    　前記制御装置は、少なくとも前記下限値を増大させることにより、前記物品の平均重量を増大させ、少なくとも前記上限値を減少させることにより、前記物品の平均重量を減少させる、請求項２に記載の包装検査装置。     The control device stores a lower limit value and an upper limit value of the predetermined weight range,
    The package according to claim 2, wherein the control device increases the average weight of the article by increasing at least the lower limit value, and decreases the average weight of the article by decreasing at least the upper limit value. Inspection equipment.
  4. 　前記計測装置はＸ線検査装置である、請求項１～３のいずれか一項に記載の包装検査装置。 The packaging inspection device according to any one of claims 1 to 3, wherein the measurement device is an X-ray inspection device.
  5. 　前記計測装置と前記振分装置と前記包装装置と前記検査装置と前記制御装置とを備える請求項１～４のいずれか一項に記載の包装検査装置と、
    　前記振分装置を通過した前記ライン内の複数の前記物品を組合せ計量し、組合せ計量された複数の前記物品を前記包装装置に供給する組合せ計量装置と、を備える生産システム。     The packaging inspection device according to any one of claims 1 to 4, comprising the measurement device, the distribution device, the packaging device, the inspection device, and the control device.
    A combination weighing device that combines and weighs the plurality of articles in the line that has passed through the distribution device and supplies the plurality of weighed articles to the packaging device.
  6. 　１つ又は複数の物品に対して前記物品のそれぞれの重量を計測する計測装置と、前記物品のそれぞれの重量が所定の重量範囲内にない場合に当該物品をラインから振り分ける振分装置と、前記振分装置を通過した前記ライン内の複数の前記物品を袋に包装する包装装置と、前記袋に包装された複数の前記物品の個数を検査する検査装置と、を備える包装検査装置で実行される制御方法であって、
    　前記包装検査装置が、前記検査装置による個数検査の結果に基づいて前記所定の重量範囲を変更する、制御方法。     A measuring device that measures the weight of each of the articles with respect to one or more articles, and a sorting device that sorts the articles from a line when the weight of each of the articles is not within a predetermined weight range, A packaging inspection apparatus including a packaging apparatus that packages a plurality of the articles in the line that has passed through the distribution apparatus in a bag, and an inspection apparatus that inspects the number of the plurality of the articles packaged in the bag. Control method,
    A control method, wherein the packaging inspection device changes the predetermined weight range based on a result of a number inspection by the inspection device.
  7. 　１つ又は複数の物品に対して前記物品のそれぞれの重量を計測する計測装置と、前記物品のそれぞれの重量が所定の重量範囲内にない場合に当該物品をラインから振り分ける振分装置と、前記振分装置を通過した前記ライン内の複数の前記物品を袋に包装する包装装置と、前記袋に包装された複数の前記物品の個数を検査する検査装置と、を備える包装検査装置のコンピュータに実行させる制御プログラムであって、
    　前記検査装置による個数検査の結果に基づいて前記所定の重量範囲を変更する、制御プログラム。     A measuring device that measures the weight of each of the articles with respect to one or more articles, and a sorting device that sorts the articles from a line when the weight of each of the articles is not within a predetermined weight range, A packaging inspection apparatus comprising: a packaging apparatus that packages a plurality of the articles in the line that has passed through the distribution apparatus in a bag; and an inspection apparatus that inspects the number of the plurality of the articles that are packaged in the bag. A control program to be executed,
    A control program for changing the predetermined weight range based on a result of a number inspection by the inspection device.
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