• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    According to a bag sorting method (1): - bags (1) are provided that run flatly one after the other separated by a gap; the outer edges of each bag (1) are checked to determine if the jig and the position of the bag (1) correspond to a calibrated bag (1a) or not calibrated (1b), - the uncalibrated bags (1b) are ejected - the calibrated bags (1a) are presented in front of a visual inspection system (6) to determine an acceptable or unacceptable quality of the bag (1) inspected; and the acceptable bags (1c) are stacked and the unacceptable bags (1d) are discarded after passing through the visual inspection system (6). The invention also relates to a machine implementing the method.
    公开号:FR3035013A1
    申请号:FR1553245
    申请日:2015-04-14
    公开日:2016-10-21
    发明作者:Cedric Ritondo
    申请人:Holweg Group SAS；
    IPC主号:
    专利说明:

    [0001] TECHNICAL FIELD The present invention relates to a method of sorting by a visual inspection system of bags after their production. It also relates to a sorting machine implementing said method. STATE OF THE ART The manufacture of bags, for example paper bags, is carried out on machines working continuously from a strip of reel material or from pre-cut sheets on a stack, such as paper made from paper. all, or with plastic parts, on which are performed in particular folding operations, cutting and gluing. The finished bags leave the machine, for example, flat one after the other separated by an interval before being received by a stacking device that forms piles. The transport of the bags is carried out between pairs of rollers distributed on the road or by pairs of conveyor belts mounted in a loop and which run on both sides of the bags.
    [0002] Production rates can be high and reach a few hundred pieces per minute. Sometimes in transitional phases of start-up or when production parameters vary, poor quality bags are produced. Even though operators monitor production, they can not react instantly so that poor quality products mix with good quality products. The document EP 2 433 872 proposes to perform an operation of detecting bags of poor quality, interposing between the production machine and the stacker device a visual inspection system. The stacker device 30 downstream of the inspection system includes a sorting device for stacking only the bags considered acceptable by the visual inspection system. Unacceptable bags spin without being stacked and are collected further after passing through the stacking zone. The inspection system includes a station at which the bags lie on one side on conveyor belts to allow full visual access to the opposite side of the conveyor belt. This post includes a lighting device and a camera or several cameras. It allows to control various parameters, such as the presence of 10 handles, their number, their position, the quality of the fold of the bottom of the bag, the quality of the printing or the presence of glue Such a system has been effective in in most cases. However, during adjustment, restarting after a stop, or in case of various incidents, the state of the bag at the exit of the machine may be so bad that the bag can not pass through the system. inspection, particularly at the station in which the bag is supported by the conveyor belts on one side, and it causes a jam. It is then urgent to stop the production to perform a manual debourrage.
    [0003] Description of the Invention The invention aims at providing a method and a machine for sorting by visual inspection which remedy these problems, in particular which do not introduce risks of jamming when bags of very poor quality leave the machine of production.
    [0004] With these objects in mind, the object of the invention is a bag-sorting method in which: - flat bags are provided that run past one another, separated by a gap; 3035013 3 - each bag is presented in front of a visual inspection system to determine an acceptable or unacceptable quality of the bag inspected; and - the acceptable bags are stacked and unacceptable bags are discarded after passing through the visual inspection system; the method being characterized in that prior to the visual inspection, the outer edges of each bag are checked to determine if the template and the position of the bag correspond to a calibrated or uncalibrated bag, the uncalibrated bags are ejected upstream of the bag. visual inspection system, and the calibrated bags are presented to the visual inspection system. According to the invention, a first sorting is applied which can be easily implemented, for example by using cells such as optical, mechanical or capacitive, inductive or other presence sensors, so as to determine whether the bag is present. large defects compared to its external dimensions. Indeed, the risk of jamming from bags whose parts are partially detached, folded or torn. These defects result in significant differences in the size of the bag and are easily detected. This sorting can be implemented while maintaining the bag between the conveyor belts.
    [0005] The removal of such bags greatly reduces the risk of jamming, particularly in the visual inspection system when the bags are less well maintained. Fault detection can also be performed in a complementary manner on the production machine, with for example glue presence detectors (by humidity or by heat in the case of hot glue). According to one arrangement, it is determined that a bag is uncalibrated if the width or length of the bag is outside a predetermined range. By determining the position of the longitudinal edges, it is determined what is the width of the bag. If this is outside an interval around the expected value, it is deduced that the bag has a defect and is not calibrated. Similarly, by determining the position of the leading and trailing edges, the length of the bag is determined. If this is outside an interval around the expected value, it is deduced that the bag has a defect, such as a badly cut edge, a badly folded leg or a part torn off. The bag is then declared not calibrated.
    [0006] According to another arrangement, it is further determined that a bag is uncalibrated if its leading edge is spaced from the trailing edge of the previous bag by a range greater than a predetermined threshold. A distance greater or less than the expected value is the sign of an anomaly on the bag which is thus declared uncalibrated.
    [0007] In yet another arrangement, it is determined that a bag is uncalibrated if its leading edge is spaced from the trailing edge of the previous bag by an interval greater than a first predetermined threshold or lower than a second predetermined threshold. The length of the bag to be between the first and the second threshold is thus determined to be considered as that of a calibrated bag. According to yet another provision, a bag is also declared uncalibrated if its thickness is greater than a predetermined threshold; for example, a device that rises when the bag passes too thick activates a contactor and the bag is thus declared uncalibrated. A high thickness is generally related to the layering of layers of the constituent material in a non-compliant manner. The invention also relates to a bag sorting machine comprising: - an inlet for receiving flat bags scrolling one after the other separated by a gap; a visual inspection system for scrolling the bags in front of an optical apparatus and for determining an acceptable or unacceptable quality of the inspected bag; and a selection system for rejecting unacceptable sacks and stacking acceptable sacks; The machine being characterized in that it comprises a control station between the entrance and the visual inspection system to control the outer edges of each bag and determine if the jig and the position of the bag correspond to a calibrated bag or non-calibrated, and a switch upstream of the visual inspection system to eject the unsized bags. According to a constructive arrangement, the switch comprises a spout pivotally mounted about a transverse axis, the spout having an end and pivoting between an erasure position in which the bags 10 follow a path to the visual inspection system along an outer face of the spout, and a raised position in which the end of the spout protrudes to orient the front of the bag which moves on the side of an inner face of the spout opposite to the outer face. The spout interposes at the front of the uncalibrated bag to point it to a different path than to the inspection system. The bag continues moving, but by the other way. BRIEF DESCRIPTION OF THE DRAWINGS The invention will be better understood and other features and advantages will appear on reading the description which follows, the description referring to: FIG. 1 which is a schematic view of a sorting machine according to one embodiment of the invention. DETAILED DESCRIPTION A bag sorting machine according to the invention is shown in FIG. 1. The machine is designed to receive bags 1 at the output of a machine for manufacturing said bags 1 and comprises, successively in the direction of travel, bags 1: an inlet 21 for receiving bags 1 scrolling flat one after the other separated by a gap; - first means of transport 2 for scrolling the bags 1 in front of a control station 3 to control the outer edges of each bag and determine if the jig and the position of the bag correspond to a calibrated bag 1 has or not calibrated lb ; 5 - a switch 4 to eject the un-calibrated bags lb; second transport means 5 for transporting the calibrated bags 1a to a visual inspection system 6 for scrolling the calibrated bags 1a in front of an optical apparatus 60 and for determining an acceptable or unacceptable quality of the bag being inspected; and - a selection system 7 for rejecting unacceptable bags ld and stacking acceptable bags 1 c. The first transport means 2 are conventionally formed by pairs of conveyor belts 20 mounted in a loop 15 and between which the bags 1 pass. The control station 3 comprises for example several photocells emitting and receiving a light beam may be interrupted by the bag to control. The edges of the bag in the transport direction must interrupt the beam of a first cell and not interrupt the beam of a second cell adjacent to the first, and this in a time interval corresponding to the theoretical period of passage of the bag. . If during this interval the beam of the second cell is interrupted or if the beam of the first cell is not, it is considered that the bag has a defect. Other combinations of controls can be implemented. The first cell detects the gap between the leading edge of a bag and the trailing edge of the previous bag. If this interval is greater than a predetermined threshold, the front edge of the bag is late and it is considered that the bag has a defect. It is also possible to control the thickness of the bag, which makes it possible to determine whether the bags have a major formation defect and to choose whether to discard them immediately or not. In this case, the control is carried out for example by a feeler provided with a shoe, a caster with an elastic support on the bags that run past, or by a laser or ultrasonic sensor. Furthermore, some of these checks can be performed upstream on the manufacturing machine, the control station receiving the non-compliance information being able to determine when the non-calibrated bag passes to the level of the referrals. Downstream of the control station 3, the switch 4 can be operated quickly according to the result provided by the control station 3.
    [0008] The switch 4 has a spout 40 pivotally mounted about a transverse axis between an erasure position in which the calibrated bags 1 follow a path to the visual inspection system 6 along an outer face 401 of the beak 40, and a raised position in which one end of the spout 40 projects to orient the front of the uncalibrated bag lb 15 which moves on the side of an inner face 402 of the spout 40 opposite to the outer face 401. The bags The calibrated bags 1a are taken over by the second transport means 5 to be taken to the visual inspection system 6.
    [0009] Unlike conventional means of transport, the second transport means 5 supports the bags 1a on one side 11, so that the opposite face 12 is completely unobstructed and visually accessible. The visual inspection system 6 determines whether the bag inspected is acceptable or not. The bag 1 is then delivered to the selection system 7 which is configured to stack the acceptable bags 1 c and to orient the unacceptable bags 1 d to a second recovery tank 9.
    权利要求:
    Claims (6)
    [0001]
    REVENDICATIONS1. A method of sorting bags (1) according to which: - bags (1) are provided that run flatly one after the other separated by a gap; presenting each bag in front of a visual inspection system (6) to determine an acceptable or unacceptable quality of the bag (1) inspected; and - the acceptable bags (1c) are stacked and the unacceptable bags (1d) are discarded after passing through the visual inspection system (6); the method being characterized in that prior to the visual inspection, the outer edges of each bag (1) are checked to determine if the jig and the position of the bag (1) correspond to a calibrated bag (1a) or not calibrated (1b), the uncalibrated bags (1b) are ejected upstream of the visual inspection system (6), and the calibrated bags (1a) are presented to the visual inspection system (6).
    [0002]
    2. Method according to claim 1, wherein it is determined that a bag (1) is uncalibrated if the width or length of the bag is outside a predetermined range.
    [0003]
    The method of claim 1 or 2, wherein it is determined that a bag (1) is uncalibrated if its leading edge is spaced from the trailing edge of the previous bag by a range greater than a predetermined threshold.
    [0004]
    4. Method according to one of the preceding claims, wherein it is determined that a bag (1) is not calibrated its thickness is greater than a predetermined threshold.
    [0005]
    A bag sorting machine (1) comprising: - an inlet (21) for receiving flat bags (1) running one after the other separated by a gap; a visual inspection system (6) for scrolling the bags (1) in front of an optical apparatus (60) and for determining an acceptable or unacceptable quality of the inspected bag; and - a selection system (7) for rejecting the unacceptable bags (1d) and stacking the acceptable bags (1c); the machine being characterized in that it comprises a control station (3) between the inlet (21) and the visual inspection system (6) to control the outer edges of each bag and determine whether the template and the position of the bag corresponds to a calibrated bag (1a) or not calibrated (1 b), and a switch (4) upstream of the visual inspection system (6) to eject the unsized bags (1 b).
    [0006]
    6. Machine according to claim 5, wherein the switch (4) comprises a spout (40) pivotally mounted about a transverse axis, the spout (40) having an end (403) and pivoting between a position of erasing wherein the bags (1a) follow a path to the visual inspection system (6) along an outer face (401) of the spout (40), and a raised position in which the end of the spout (40) ) protrudes 20 to orient the front of the bag (1b) which moves on the side of an inner face (402) of the nose (40) opposite the outer face (401).
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    同族专利:
    公开号 | 公开日
    FR3035013B1|2017-04-14|
    EP3283238A1|2018-02-21|
    US20180154396A1|2018-06-07|
    WO2016166452A1|2016-10-20|
    EP3283238B1|2019-12-11|
    US10220417B2|2019-03-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE1187051B|1958-06-24|1965-02-11|Telefunken Patent|Device for checking the format and / or the position of rectangular flat objects such as mail items in particular|
    DE4014130A1|1989-05-10|1990-11-22|Toshiba Kawasaki Kk|DEVICE FOR TREATING CARD-SHAPED OBJECTS|
    US20080251429A1|2007-04-13|2008-10-16|Siemens Energy & Automation, Inc.|Method and system for sorting postal mail|
    EP2077162A1|2007-12-27|2009-07-08|Kabushiki Kaisha Toshiba|Sorting apparatus and control method for sorting apparatus|
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    US5240116A|1986-09-05|1993-08-31|Opex Corporation|Method and apparatus for determining the orientation of a document|
    JP3484196B2|1993-04-30|2004-01-06|ウールマンヴィジオテックゲゼルシャフトミットベシュレンクテルハフツング|Method and apparatus for sorting material parts|
    US5842577A|1996-07-26|1998-12-01|Opex Corporation|Method and apparatus for sorting and acquiring image data for documents|
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    JP6446297B2|2015-03-09|2018-12-26|株式会社ニューフレアテクノロジー|Inspection device|
    CN105080855B|2015-06-03|2017-08-25|合肥京东方光电科技有限公司|Base plate mark detection means and base plate mark detection method|
    JP6622646B2|2016-04-26|2019-12-18|株式会社ミツトヨ|Transparent body defect detection method and apparatus|NL2016146B1|2016-01-25|2017-07-31|De Greef's Wagen- Carrosserie- En Machb B V|Eliminator for detecting and removing products, such as fruit and vegetables, singler and sorting system, and method thereof.|
    US10737454B2|2017-09-24|2020-08-11|Steve Kohn|Method and machine for quality control inspection of pinch bottom and flat bottom bags|
    EP3725716A1|2017-12-11|2020-10-21|Lapeyra Y Taltavull Comercial, S.L.|System for checking bags, visual bag inspection machine and bag conveyor machine|
    法律状态:
    2016-02-15| PLFP| Fee payment|Year of fee payment: 2 |
    2016-10-21| PLSC| Publication of the preliminary search report|Effective date: 20161021 |
    2017-03-14| PLFP| Fee payment|Year of fee payment: 3 |
    2018-02-09| PLFP| Fee payment|Year of fee payment: 4 |
    2019-04-30| PLFP| Fee payment|Year of fee payment: 5 |
    2020-04-29| PLFP| Fee payment|Year of fee payment: 6 |
    2022-01-07| ST| Notification of lapse|Effective date: 20211205 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1553245A|FR3035013B1|2015-04-14|2015-04-14|METHOD AND MACHINE FOR SORTING FLAT BAGS|FR1553245A| FR3035013B1|2015-04-14|2015-04-14|METHOD AND MACHINE FOR SORTING FLAT BAGS|
    PCT/FR2016/050809| WO2016166452A1|2015-04-14|2016-04-07|Method and machine for sorting bags|
    EP16730872.5A| EP3283238B1|2015-04-14|2016-04-07|Method and machine for sorting bags|
    US15/565,965| US10220417B2|2015-04-14|2016-04-07|Method and machine for sorting bags|
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