WO2023015029A1 - Système d'alimentation de capteur de vision - Google Patents

Système d'alimentation de capteur de vision Download PDF

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Publication number
WO2023015029A1
WO2023015029A1 PCT/US2022/039698 US2022039698W WO2023015029A1 WO 2023015029 A1 WO2023015029 A1 WO 2023015029A1 US 2022039698 W US2022039698 W US 2022039698W WO 2023015029 A1 WO2023015029 A1 WO 2023015029A1
Authority
WO
WIPO (PCT)
Prior art keywords
conveyor
products
product
zone
processing unit
Prior art date
Application number
PCT/US2022/039698
Other languages
English (en)
Inventor
Jon Paul LASKIS
J. Mark Nunn
Wayne J. RYAN
Original Assignee
Illinois Tool Works Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US17/882,121 external-priority patent/US20230045211A1/en
Application filed by Illinois Tool Works Inc. filed Critical Illinois Tool Works Inc.
Priority to CA3228094A priority Critical patent/CA3228094A1/fr
Publication of WO2023015029A1 publication Critical patent/WO2023015029A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
    • B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/52—Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices
    • B65G47/68—Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices adapted to receive articles arriving in one layer from one conveyor lane and to transfer them in individual layers to more than one conveyor lane or to one broader conveyor lane, or vice versa, e.g. combining the flows of articles conveyed by more than one conveyor
    • B65G47/70—Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices adapted to receive articles arriving in one layer from one conveyor lane and to transfer them in individual layers to more than one conveyor lane or to one broader conveyor lane, or vice versa, e.g. combining the flows of articles conveyed by more than one conveyor with precedence controls among incoming article flows
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/52—Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices
    • B65G47/68—Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices adapted to receive articles arriving in one layer from one conveyor lane and to transfer them in individual layers to more than one conveyor lane or to one broader conveyor lane, or vice versa, e.g. combining the flows of articles conveyed by more than one conveyor
    • B65G47/71—Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices adapted to receive articles arriving in one layer from one conveyor lane and to transfer them in individual layers to more than one conveyor lane or to one broader conveyor lane, or vice versa, e.g. combining the flows of articles conveyed by more than one conveyor the articles being discharged or distributed to several distinct separate conveyors or to a broader conveyor lane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
    • B65G2203/04—Detection means
    • B65G2203/041—Camera
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Definitions

  • This invention relates generally to a device for use in production and packaging that can accurately monitor and adjust product flow, population, and irregularities that occur on a manufacturing line, such as a conveyor line.
  • Traditional manufacturing lines include operator controls as part of a line control system.
  • the speed of the manufacturing lines are maintained and/or programmed to follow the respective upstream or downstream speed of the machine.
  • Such manufacturing lines may include accumulators for smoothing out bottlenecks in product pace, case packing, shrink wrapping, product inspect! on/rej ection, tooling, IE robots, and/or other manufacturing steps.
  • the invention generally relates to a system and method that detects undesirable product flow and adjusts to normalize such flow.
  • the general object of the invention can be attained, at least in part, through the subject system and method which uses optimized computer vision algorithms. These algorithms will improve the control of function of a machine to facilitate better product flow through the packaging machinery.
  • a camera is placed relative to the flow of products, preferably over the flow.
  • the use of an overhead camera system enables replacement of multiple contact sensors with a single touchless camera system.
  • the camera system can detect product density in higher fidelity than a simple boolean flag thereby enabling precise control of conveyor speed via automated PID loop (feedback) adjustments rather than simple High/Low speed switching.
  • the same camera system can likewise measure product movement and minimize down time related to jam conditions.
  • Current methods of “down bottle” or “broken bottle” detection require product filed into lanes after entering, for example, a case packer and is used to stop the machine for operator intervention.
  • the smart camera system according to this invention can detect this issue earlier in the line while the product is still in mass flow. Earlier detection enables less costly intervention without downtime.
  • the input to the device will be a bulk stream of products.
  • the output of the device will be a singular row or plurality of rows of single file products ready for presentation to the next machine or stage in the system.
  • Sensor capabilities include but are not limited to: product count; product spacing; product speed; product direction; product orientation (e.g., downed bottles); control of downstream equipment; lane balancing; and jam detection.
  • FIG. 1 is a schematic view of a prior art system
  • FIG. 2 is a schematic view of vision sensor infeed system according to a preferred embodiment of this invention.
  • FIG. 3 is a process view of a vision sensor infeed system according to a preferred embodiment of this invention.
  • FIG. 4 is a schematic view of vision sensor down bottle and machine control system according to a preferred embodiment of this invention.
  • FIG. 5 is a schematic view of vision sensor lane balancing and machine control system according to a preferred embodiment of this invention.
  • FIG. 6 is a schematic view of vision sensor pattern recognition and machine control system according to a preferred embodiment of this invention.
  • the present invention provides a system and method for optimizing flow of a plurality of products along a conveyor.
  • Fig. 1 shows a schematic of a prior art system that includes sensors 10 positioned within a widened section, or “bump out” 20, of a conveyor 30.
  • Bulk product 25, such as a plurality of bottles, is fed through an infeed C to the conveyor 30 and sensors 10 make physical contact with the product 25 to detect the presence or absence of product.
  • the system may be adjusted by speeding up or slowing down the conveyor and/or increasing or decreasing volume of product 25 to an infeed 35.
  • the sensors 10 and bump out 20 create a disturbance in product flow by their mere presence and create inefficiencies in the product flow and grouping.
  • Fig. 2 shows a schematic of a preferred system and method for optimizing flow of a plurality of products along a conveyor 30.
  • a conveyor drive 40 is connected with respect to the conveyor 30.
  • the conveyor drive 40 is configured to modulate the speed of the conveyor 30, as described in more detail below.
  • a plurality of products 25 preferably travel along the conveyor 30 in either a mass flow or a single file flow pattern. Nonetheless, the system may include a division point 70 positioned along the conveyor 40 that includes one or more lane dividers to divide groups of products into two or more single lanes. By dividing up products 25 into individual lanes from a mass flow, the flow of the products may be better maintained within the subject system.
  • a camera 50 is positioned relative to the products 25 on the conveyor 30.
  • the camera 50 is positioned directed overhead a flow of the products 25.
  • the camera 50 may be positioned off center of overhead or to the side of product flow provided the camera 50 can still group and recognize distinct products 25 within the product flow.
  • a processing unit 60 is preferably connected with respect to the camera 50, either onboard the camera, separate from the camera or within the processing equipment of the production line. Likewise, the processing unit 60 is configured to communicate with the conveyor drive 40.
  • the processing unit 60 preferably defines a zone 65 along the conveyor 30.
  • the zone 65 preferably includes a virtual longitudinal and lateral boundary within a section of the conveyor 30.
  • the camera 50 may detect a grouping of products and the processing unit 60 subsequently determines whether this grouping is optimized or suboptimum.
  • the processing unit 60 accordingly determines relative product position metrics of the products 25 within the zone 65 and communicates with the conveyor drive 40 to modulate the speed of the conveyor 30 thereby optimizing a relative position of the products 25 within the zone 65.
  • the processing unit 60 calculates a real-time product density within the zone 65 to modulate the speed of the conveyor 30. This real-time product density may be compared with an optimum density or configuration of products 25 to thereby adjust inputs to the conveyor 30.
  • Fig. 3 shows one preferred embodiment of a process view seen through the camera 50 with realtime calculations by the processing unit 60. Fig. 3 shows a mass flow of products 25, in this case bottles, along a conveyor 30 and a zone 65 designated by a rectangular subset of all products 25 on the conveyor 30.
  • the processing unit 60 identifies a reference feature 22 of the product, in this case a bottle cap. A vector and velocity 24 of the reference feature 22 are then calculated as represented by the lines extending from the bottle caps in Fig. 3.
  • a distance 26 is calculated between each product 25 based on a center-to-center calculations or using predetermined product sizes. The vector and velocity 24 and the distance 26 of each product 25 is then used to determine the relative product position metrics of the flow of products.
  • the processing unit 60 modulates the conveyor 30 using feedback loop adjustments preferably to slow the conveyor 30 when the products 25 are spread out or speed the conveyor 30 when the products 25 are densely packed.
  • the relative product position metrics comprise a distance between each adjacent product and a vector and velocity of the respective product. The distance between each product is preferably adjusted for a size of each product, as determined from a reference feature 22, to determine the relative product position metrics needed to provide feedback to the conveyor 30.
  • the sidewalls 80 or guides are set to cause the product to form a nested configuration.
  • products 25 are angularly aligned in 60 degree angular alignment between two or more round products traveling in the same direction on the conveyor 30.
  • the round products 25 must be in contact with each other with some external guide, such as sidewalls 80, to maintain the nested pattern.
  • the conveyor drive 40 controlling the upstream bottle population will be modulated by a contactless vision sensor, the camera 50, located in the detection zone 65. Detected product population and flow information in that zone will be feedback to a PLC to modulate the speed of conveyor drive 40 and thus conveyor 30. Based on this information, the associated conveyor drive 40 speed will be adjusted to reduce or increase the product 25 population.
  • the processing unit 60 through the camera 50 will ensure gapping between product row patterns are uniform and loose enough to maintain system fluidity. Line pressure due to products 25 backing up will not allow the product 25 to make up gaps in the nested flow of product 25. Jamming at division points 70 will be reduced further ensuring the efficacy of the system.
  • Fig. 1 depicts a typical sensing device arrangement.
  • conveyor 30 will be modulated to supply the correct number of products 25 to the system. This method relies on the disturbance of the product population and increases back pressure of the product into the division points 70.
  • the conveyor 30 may include generally linear sidewalls 80. Such linear sidewalls 80 may help to smooth out the flow of product 25 along the conveyor 30.
  • the processing unit 60 may provide feedback to one or more dynamic sidewalls 85 along the conveyor 30.
  • the dynamic sidewalls 85 may be adapted to change configuration or zone latitude based on feedback from the processing unit 60. Real time changes in the dynamic sidewalls 85 can then adapt to changes in the line including jams, temperature, product material variations and/or product shape variations.
  • a related method for optimizing flow of a plurality of products 25 along a conveyor 30 includes driving a conveyor 30 with a conveyor drive 40 adapted to modulate the speed of the conveyor 30.
  • a camera 50 is positioned relative to the products 25 on the conveyor 30.
  • a zone 65 is defined along the conveyor 30 with a processing unit 60 connected with respect to the camera 30 and the conveyor drive 40, wherein the zone 65 includes a virtual longitudinal and lateral boundary within a section of the conveyor 30.
  • Relative product position metrics of the products 25 are determined within the zone with the processing unit 60 and communicated to the conveyor drive 40 to modulate the speed of the conveyor 30 thereby optimizing a relative position of the products 25 within the zone 65.
  • the subject system may be used in connection with product counts and lane balancing and confirming correct position/orientation of such products.
  • the subject system may be used with product case inspection in a similar manner.
  • the subject system can be used for case counts, empty /full case confirmation, bullseye inspection on shrink wrapped product and other inspection related requirements for packaging and handling operations.
  • Fig. 4 shows a schematic of a preferred system and method for detecting a downed product 90 or a plurality of downed products 90 along a conveyor 30.
  • a plurality of products 25 preferably travel along the conveyor 30 in either a mass flow or a single file flow pattern containing a downed product 90.
  • a camera 50 is positioned relative to the products 25 on the conveyor 30. In a preferred embodiment, the camera 50 is positioned directly overhead a flow of the products 25. Alternatively, the camera 50 may be positioned off center, overhead, or to the side of product flow provided the camera 50 can still group and recognize distinct products 25 within the product flow.
  • a prime line 95 is a virtual line setup in zone 65 that keeps a population of product 25 adequate for continuous operation of the downstream equipment.
  • the processing unit 60 signals the operator that a down product 90 is present in zone 65 in the mass flow conveying area 100 on conveyer 30.
  • the processing unit 60 signals the operator that a down product 90 is present in zone 65 in the laned conveying area 105 on conveyer 30.
  • the prime line 95 is within zone 65. If the operator does not correct the downed product 90 before it reaches the prime line 95, the processing unit 60 will signal drive 40 to stop conveyer 30.
  • the processing unit 60 signals downstream equipment to stop operation until the prime line 95 population requirements are met. Conveyer 30 may continue to run even if the prime line 95 population requirements are not met.
  • Fig. 5 shows a schematic of a preferred system and method for controlling a laning device for product 25.
  • a plurality of products 25 preferably travel along the conveyor 30 in a single file flow pattern entering a laner 110.
  • a camera 50 is positioned relative to the products 25 on the conveyor 30 in zone 65 downstream of the laner 110.
  • three lanes 70 are depicted. Lanes identified as “Lane 1, 2, and 3” are included in zone 65.
  • the laner 110 will run a plurality of product 25 into a designated lane before moving to another lane, creating a group 115 of products 25 (aka, a “slug”).
  • the prime line 95 is a virtual line setup in zone 65 that signals the laner 110 there is enough space to accept a group 115 of product 25.
  • the camera recognizes product 25 in transit and accumulates the added length.
  • the processing unit 60 calculates if the prime line has been exceeded and prevents the laner from placing another group 115 of product 25 in that lane.
  • the processing unit 60 will adjust the number of product 25 in the group 115 to account for imbalances.
  • Fig. 6 shows a schematic of a preferred system and method for controlling product 25 in a mass flow configuration on conveyer 30.
  • a plurality of products 25 travel along the conveyor 30 constrained only by sidewalls 80.
  • a camera 50 is positioned relative to the products 25 on conveyor 30.
  • the camera 50 creates a zone 65 in which product 25 is counted and compared to requirements of downstream machine requirements by the processing unit 60.
  • Conveyer 30 speed will be varied by adjustments to motor 40 to maintain consistent flow of product 25 passing over the prime line 95 to downstream equipment.
  • the conveyer 30 shifts to accumulation mode due to a product 25 restriction in flow downstream.
  • Processing unit 60 calculates the maximum allowable quantity of product 25 within zone 65 using product 25 dimensions and sidewall 80 separation. Processing unit 60 will vary the speed of conveyer 30 using motor 40 to adjust product 25 density and minimize pressure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Conveyors (AREA)

Abstract

Un système et un procédé permettant d'optimiser l'écoulement d'une pluralité de produits le long d'un transporteur (30) comprennent une partie motrice de transporteur (40) reliée au transporteur, la partie motrice de transporteur étant conçue pour moduler la vitesse du transporteur. Une caméra (50) est positionnée par rapport aux produits sur le transporteur. Une unité de traitement (60) est reliée à la caméra et à la partie motrice de transporteur, l'unité de traitement délimitant une zone (65) le long du transporteur ayant une limite longitudinale et latérale virtuelle à l'intérieur d'une section du transporteur, l'unité de traitement déterminant en outre des mesures de position relative de produit des produits à l'intérieur de la zone et communiquant avec la partie motrice de transporteur pour moduler la vitesse du transporteur, ce qui permet d'optimiser une position relative des produits à l'intérieur de la zone.
PCT/US2022/039698 2021-08-06 2022-08-08 Système d'alimentation de capteur de vision WO2023015029A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA3228094A CA3228094A1 (fr) 2021-08-06 2022-08-08 Systeme d'alimentation de capteur de vision

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US202163230306P 2021-08-06 2021-08-06
US63/230,306 2021-08-06
US17/882,121 US20230045211A1 (en) 2021-08-06 2022-08-05 Vision sensor infeed system
US17/882,121 2022-08-05

Publications (1)

Publication Number Publication Date
WO2023015029A1 true WO2023015029A1 (fr) 2023-02-09

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11926484B2 (en) * 2019-11-28 2024-03-12 Sidel Participations Device and method for conveying products

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EP0190090A1 (fr) * 1985-01-15 1986-08-06 Société Anonyme dite: GEBO Aligneur sans pression d'objets, notamment de récipients, et son dispositif de régulation
WO2007000441A1 (fr) * 2005-06-28 2007-01-04 Unitec S.P.A. Procédé et système de transport et de sélection pour fruits et légumes
JP2011088741A (ja) * 2009-10-26 2011-05-06 Shibuya Kogyo Co Ltd 容器搬送装置
EP2455914A1 (fr) * 2010-11-18 2012-05-23 Axis AB Dispositif de comptage d'objets et procédé de comptage d'objets
US20140224617A1 (en) * 2013-02-11 2014-08-14 Big Dutchman International Gmbh Control unit for an egg conveyor belt
DE102013207139A1 (de) * 2013-04-19 2014-10-23 Krones Ag Verfahren zur Überwachung und Steuerung einer Abfüllanlage und Vorrichtung zur Durchführung des Verfahrens
FR3018790A1 (fr) * 2014-03-18 2015-09-25 Gebo Packaging Solutions France Sas Dispositif et procede de convoyage et ordonnancement
EP2947032A1 (fr) * 2014-05-20 2015-11-25 Panasonic Intellectual Property Management Co., Ltd. Procédé pour le transport d'objets
DE102017209984A1 (de) * 2017-06-13 2018-12-13 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und Vorrichtung zum Umgang mit nicht aufrecht stehenden Artikeln eines Artikelstroms unter Vermeidung von Störungen
WO2020069803A1 (fr) * 2018-10-01 2020-04-09 Krones Aktiengesellschaft Dispositif et procédé de transport d'une pluralité d'articles
WO2021105381A1 (fr) * 2019-11-28 2021-06-03 Sidel Participations S.A.S. Dispositif et procede de convoyage de produits

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0190090A1 (fr) * 1985-01-15 1986-08-06 Société Anonyme dite: GEBO Aligneur sans pression d'objets, notamment de récipients, et son dispositif de régulation
WO2007000441A1 (fr) * 2005-06-28 2007-01-04 Unitec S.P.A. Procédé et système de transport et de sélection pour fruits et légumes
JP2011088741A (ja) * 2009-10-26 2011-05-06 Shibuya Kogyo Co Ltd 容器搬送装置
EP2455914A1 (fr) * 2010-11-18 2012-05-23 Axis AB Dispositif de comptage d'objets et procédé de comptage d'objets
US20140224617A1 (en) * 2013-02-11 2014-08-14 Big Dutchman International Gmbh Control unit for an egg conveyor belt
DE102013207139A1 (de) * 2013-04-19 2014-10-23 Krones Ag Verfahren zur Überwachung und Steuerung einer Abfüllanlage und Vorrichtung zur Durchführung des Verfahrens
FR3018790A1 (fr) * 2014-03-18 2015-09-25 Gebo Packaging Solutions France Sas Dispositif et procede de convoyage et ordonnancement
EP2947032A1 (fr) * 2014-05-20 2015-11-25 Panasonic Intellectual Property Management Co., Ltd. Procédé pour le transport d'objets
DE102017209984A1 (de) * 2017-06-13 2018-12-13 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und Vorrichtung zum Umgang mit nicht aufrecht stehenden Artikeln eines Artikelstroms unter Vermeidung von Störungen
WO2020069803A1 (fr) * 2018-10-01 2020-04-09 Krones Aktiengesellschaft Dispositif et procédé de transport d'une pluralité d'articles
WO2021105381A1 (fr) * 2019-11-28 2021-06-03 Sidel Participations S.A.S. Dispositif et procede de convoyage de produits

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11926484B2 (en) * 2019-11-28 2024-03-12 Sidel Participations Device and method for conveying products

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