EP0846620B1 - Verfahren und Vorrichtung zum Vereinzeln und Öffnen von Säcken - Google Patents

Verfahren und Vorrichtung zum Vereinzeln und Öffnen von Säcken Download PDF

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Publication number
EP0846620B1
EP0846620B1 EP97113091A EP97113091A EP0846620B1 EP 0846620 B1 EP0846620 B1 EP 0846620B1 EP 97113091 A EP97113091 A EP 97113091A EP 97113091 A EP97113091 A EP 97113091A EP 0846620 B1 EP0846620 B1 EP 0846620B1
Authority
EP
European Patent Office
Prior art keywords
suction means
suction
bag
bags
stack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97113091A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0846620A1 (de
Inventor
Bernd-Dieter Kolf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHRONOS HOLDING LTD
Original Assignee
Chronos Richardson GmbH
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
Application filed by Chronos Richardson GmbH filed Critical Chronos Richardson GmbH
Publication of EP0846620A1 publication Critical patent/EP0846620A1/de
Application granted granted Critical
Publication of EP0846620B1 publication Critical patent/EP0846620B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • 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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/12—Feeding flexible bags or carton blanks in flat or collapsed state; Feeding flat bags connected to form a series or chain
    • B65B43/14—Feeding individual bags or carton blanks from piles or magazines
    • B65B43/16—Feeding individual bags or carton blanks from piles or magazines by grippers
    • B65B43/18—Feeding individual bags or carton blanks from piles or magazines by grippers by suction-operated grippers
    • 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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/26—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks
    • B65B43/30—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by grippers engaging opposed walls, e.g. suction-operated

Definitions

  • the invention relates to methods and devices for handling empty bags before attaching them to a bagging neck.
  • Essentials The steps here are to separate the bags lie flat in a stack in a sack magazine, as well as that Opening the bags, which is the retraction of bag spreaders and Attachments in the bag opening allows.
  • the inventive method for solving this consists in Separate the bags in that the suction means when lowering on the sack stack at a predetermined distance from the top bag are stopped and that after lifting the vacuum means the isolated sack for further transport is torn off from the suction means against the negative pressure, or when opening individual bags in that the upper movable Vacuum cleaner lowered onto the upper wall of the bag and each at a predetermined distance from the upper bag wall be stopped. It is preferably provided that the suction means applied with an uninterrupted vacuum become. In particular, it is provided that the sack after lifting the upper suction means when spreading / for further transport against the negative pressure of the suction means is torn down.
  • the mode of operation of this procedure is that by stopping the movable suction means at a distance from the top wall of the bag the possibility of excessive Vacuum build-up, the sack walls lying further down transmits, is avoided, but that with a suitably large Volume flow to the suction means or sufficient flow speed the upper sack or the upper sack wall automatically from the sack below or the lower one Sack wall loosens and is sucked in by the suction means, whereby after application to the suction opening of the suction means so there is firm adhesion that there is movement of the suction means away from the stack of bags or from the base with the desired one Success of separating or opening can be initiated.
  • the suction means are relative high volume flow operated at a relatively low vacuum.
  • the energy input for the corresponding suction fan can be used here be reduced.
  • the Vacuum in the suction means are monitored and the at constant fan performance after picking up a sack in the Area of the bag bottom or a bag wall in the area of Vacuum build-up or pressure drop entering the bag opening Control signal for the subsequent lifting of the movable upper Vacuum cleaner can be used.
  • control means are provided on the suction means, the suction opening of the suction means at a minimum distance Stop to the surface of the upper sack or at the device to open individual bags by using control means are provided on the upper movable suction means, which the Intake opening at a minimum distance from the top wall of the bag stop.
  • the suction means can be closed and closed with control valves be switched off as usual.
  • the suction means with a suction fan are permanently openly connected.
  • a pressure sensor can be attached to the suction means or in the line between the suction means and the suction fan be arranged as a signal generator for a lifting movement the suction means in the event of a vacuum build-up or pressure drop due to the application of a bag wall to the suction opening the suction means is switched.
  • Non-contact sensor means or sensitive smooth-running button means are provided, the respond without affecting the stack of bags.
  • These embodiments are to be named and closed for the sake of completeness claim.
  • the preferred form of the control means are arranged at right angles to the suction opening of the suction means, name stop bars projecting downwards.
  • the Placing the stop bar itself ends the lowering the movable suction means.
  • this configuration the beneficial effect that the suction opening and the wall of the sack against the stop to form a Z-profile is deformed, resulting in stiffening across the entire width of the bag arises in the area of the bag bottom.
  • This has the advantage that with suction means of a certain length or with in one certain distance from each other arranged suction bags different widths can be handled easily, even if this laterally over the extreme width of the suction means survive.
  • the stop bar is via elongated holes adjustable relative to the suction opening level of the suction means arranged.
  • This allows a simple adjustment for customization the device on bags with different air permeability of their tissue.
  • the adjustment range of the above Elongated holes can be so large that the stop bar up can be withdrawn into the intake opening level, so that the suction means with their intake opening level fully on the Bag surface can come to rest. This is also an adaptation of the device to bags with airtight Sack walls and high inherent rigidity possible.
  • the suction means can be made from a sheet metal housing that is open on one side with a connecting piece for a connecting line to the suction fan exist, the open side of which forms the suction opening.
  • the term opening plane is preferably a flat surface meant, in the broader sense, can also be the edges of the Intake opening circumscribed opening level, for example, slightly be arched.
  • the suction opening can depend on the Size of the housing must be completely open or with the bag wall supporting ribs or a perforated plate. It has been found to have no special sealants the edges of the suction opening are required. In individual cases however, it may be advantageous to use the suction opening of the suction means to be provided with all-round sealing lips.
  • suction means In connection with the separation of bags is a pair Arrangement of suction means spaced apart along the Sack bottom edge cheap.
  • the two suction means can Elongated holes can be adjusted at a distance from each other to accommodate to allow different sack widths.
  • the lower suction means can immediately be firmly mounted under a sack support surface and be covered with a pinhole.
  • the lower suction means have the advantage in this embodiment that they are when feeding of a sack on the sack support surface due to the permanent Vacuum application a braking effect on the supplied Exercise the sack and adjust the vacuum accordingly can make an end stop edge unnecessary.
  • a exact positioning here is due to the effect of the lower one vacuum devices under constant pressure and / or through a non-contact sensor-monitored bag transport device like a Conveyor belt ensured.
  • the lower suction means can, however also be designed to be movable and a symmetrical counter-movement to the upper suction devices.
  • the bag support surface is to be moved accordingly when opening a sack.
  • Suitable suction fans which, as described above, are intended to supply two suction units for receiving a sack and one suction unit for opening the sack, are due to a negative pressure in the range of 20-100 mbar with a delivery volume flow in the range between approximately 4-8 m 3 / min. featured.
  • the pressure curve over the delivery volume flow should run as flat as possible and react only slightly as a percentage to a change in the volume flow after sucking in a bag wall, so that there are only slight deviations in operation from a pair of values at the design point.
  • FIGS. 1 and 2 show a device according to the invention which has a robust frame 11 in which a sack magazine 12 can be seen.
  • a pivot arm 15 is arranged in a pivot bearing 16 from the substantially horizontal extent.
  • Pneumatic actuating cylinders 18, 19, which engage with their push rods on an axis of rotation 20 in the swivel arm 15, are articulated on a further cross member 17 in the frame 11.
  • Stop buffers 22, 23 are also attached to the swivel arm 15 and limit the upward movement of the swivel arm 15 by a stop against a further cross member 21 in the frame 11, which is only indicated.
  • suction means 24, 25 are arranged, which are fastened to a bridge 26, which are suspended in a head piece 27 in a damped manner via elastic elements 28, 29.
  • the suction means 24, 25 are adjustable on the bridge 26 in the transverse direction, as shown by double arrows Q 1 , Q 2 .
  • the head piece 27 is displaceable and retractable via a pneumatic actuating cylinder 30 in a guide carriage 31 by means of two guide rods 32, 33, as marked by a second horizontal double arrow V 1 .
  • the suction means 24, 25 according to the invention have suction openings 34, 35 of rectangular cross-section and height-adjustable stop strips 36, 37, which are covered by the bridge 26 in a top view.
  • the suction means 24, 25 have connecting pieces 38, 39 for connecting flexible pressure-resistant lines L 1 , which are only indicated by a dash-dotted line in the side view. From the connecting piece, these lines lead via a holding piece 40 attached to the bag magazine 12 to a vacuum distributor housing 42 screwed to the frame 11. From this, a line L 4 leads to the suction fan (not shown). A guide plate 41 for an isolated sack is also arranged on the holding stub 40.
  • the suction means 24, 25 are shown in the two different positions of the pneumatic actuating cylinder 33, a sack S 1 , S 2 which has already been picked up being identified by dash-dotted lines.
  • a movable conveyor belt 43 is also shown in the frame 11, which is pivotally mounted at the end, not shown and an actuating cylinder 44 from the lower illustrated Position can be pivoted to an upper position.
  • a conveyor belt 45 is shown, at the end of which is a bag support 46 becomes recognizable.
  • sack support 46 Above this sack support 46 are further suction means 72 according to the invention as the upper pivotable Suction means shown for opening while sunk in the sack pad 46 lower fixed suction means 73 can be seen are. This will be discussed in connection with other figures.
  • the grid 61 is via two actuating cylinders 65, 66 which are connected to a cross member 67 are mounted in the frame 11, can be lifted off the conveyor belt 45, so that opening of the left-hand bag opening is not hindered becomes.
  • Grid 61 When driving a single sack from the conveyor belt 43 on the conveyor belt 45 to the bag support 46 is Grid 61, however, in its lower position shown to an automatic lifting of the quickly conveyed sack from the To prevent conveyor belt 45.
  • a central swivel arm 69 mounted on an axis of rotation 68 is arranged in the frame 11 and can be raised and lowered by means of an actuating cylinder 70, as indicated by a double arrow V 2 .
  • the actuating cylinder is articulated on an intermediate floor 71.
  • the upper suction means 72 are arranged so as to be adjustable by means of fastening tabs 74, 75 in the swivel arm 69, as indicated by a double arrow H 2 .
  • the upper suction means 72 On the upper suction means 72, a suction opening 76 and a connecting piece 77 can be seen as details.
  • the lower suction means 73 show a suction opening 78 in the plane of the bag support 46 and a lateral connection piece 79.
  • the upper suction means 72 finally have a stop bar 80.
  • the stop bar 80 lies on the upper sack wall, the upper sack wall being sucked against the suction opening 76, so that the sack wall S 3 is Z-shaped and stiffening, as with a chain-dotted line hinted at, rejected.
  • the swivel arm 69 When the swivel arm 69 is raised into the position shown by means of the actuating cylinder 70, the sack opens, since at the same time the lower sack wall is held in place by the permanently installed lower suction means 73.
  • a pivot arm 81 is also shown, which is rotatable about a rotating beam 82 and at the end has a pair of expanding blades 83, 84 which can pivot into the bag opening.
  • the spreading vanes 83, 84 can then be removed from one another, as a result of which the bag opening is spread and, with the vacuum still present, are torn away from the suction openings 76, 78 of the suction means 72, 73.
  • the bag held by the spreading vanes 83, 84 can then be moved away with the swivel arm 81 and placed on a bag neck.
  • a partially flexible, partially fixed line L 2 can be seen , which leads to the connecting piece 79 of the lower suction means 73, and a similarly running line L 3 to the connecting piece 77 of the upper suction means 72, each with a dash-dotted line Marked are.
  • the suction fan itself is not shown.
  • suction means 72 are the suction means according to the invention 72 enlarged according to Figures 6 and 7 and with the Provide reference numerals already mentioned above. On the description is hereby incorporated by reference. It can also be seen that the suction means 72 in the mounting tabs 74, 75 slots 91, 92 with which they face in the longitudinal direction their swivel arm 69 are adjustable. It can also be seen that the stop bar 80 has a pair of elongated holes 93, 94, through their lower stop edge opposite the intake opening level 76 is adjustable in height.
EP97113091A 1996-12-06 1997-07-30 Verfahren und Vorrichtung zum Vereinzeln und Öffnen von Säcken Expired - Lifetime EP0846620B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19650653 1996-12-06
DE19650653A DE19650653C1 (de) 1996-12-06 1996-12-06 Verfahren und Vorrichtung zum Vereinzeln und Öffnen von Säcken

Publications (2)

Publication Number Publication Date
EP0846620A1 EP0846620A1 (de) 1998-06-10
EP0846620B1 true EP0846620B1 (de) 2000-06-21

Family

ID=7813836

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97113091A Expired - Lifetime EP0846620B1 (de) 1996-12-06 1997-07-30 Verfahren und Vorrichtung zum Vereinzeln und Öffnen von Säcken

Country Status (5)

Country Link
EP (1) EP0846620B1 (da)
KR (1) KR100242679B1 (da)
AT (1) ATE193994T1 (da)
DE (1) DE19650653C1 (da)
DK (1) DK0846620T3 (da)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19740851A1 (de) 1997-09-17 1999-03-18 Chronos Richardson Gmbh Vorrichtung zum Vereinzeln von Säcken
CN106829057B (zh) * 2017-01-22 2022-09-13 广州国诺自动化设备有限公司 一种高速热缩袋套袋机
CN109132017A (zh) * 2018-09-28 2019-01-04 济宁冠宇自动化设备有限公司 一种适用于透气物料袋的自动送袋及开袋装置
CN112193493A (zh) * 2020-09-28 2021-01-08 温州倾晨贸易有限公司 一种智能生产的笔记本内存条包装装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2364548C3 (de) * 1973-12-24 1979-03-15 Erwin Behn Verpackungsbedarf Gmbh, 4150 Krefeld Vorrichtung zum öffnen von Säcken und Beuteln
US4189136A (en) * 1977-08-01 1980-02-19 Strong-Robinette Bag Company, Inc. Automatic bag tube feeder
FR2472529A1 (fr) * 1979-11-23 1981-07-03 Chapuis Ets M Dispositif depileur de sacs vides, notamment pour une machine de remplissage
IT1149632B (it) * 1982-02-12 1986-12-03 Car Ventomatic Spa Dispositivo di prelievo e separazione dei sacchida pacco per il servizio di infilasacchi automatici
FR2609688B1 (fr) * 1987-01-20 1989-03-31 Rochelle Pallice Sica Silo Procede et dispositif pour prendre un a un des sacs sur une pile de sacs et les placer dans une position predeterminee
DE3742637A1 (de) * 1987-12-16 1989-06-29 Joachim Prof Dr Ing Mehrdorf Vorrichtung zum anheben eines leersackes
DE3840646A1 (de) * 1988-12-02 1990-06-07 Chronos Richardson Gmbh Verfahren zum vereinzeln und zufuehren von saecken
DE4110969C1 (da) * 1991-04-05 1992-05-27 Georg Spiess Gmbh, 8906 Gersthofen, De
DE4205075A1 (de) * 1992-02-20 1993-08-26 Echtner Hubert Einrichtung zum oeffnen und transportieren von tueten, saecken, beutel oder schlaeuchen aus allen folienarten, papier, kunststoffen oder textilfasern mit glatter, sowie mit perforierter oder genoppter, bzw. strukturierter oberflaeche

Also Published As

Publication number Publication date
KR19980063453A (ko) 1998-10-07
ATE193994T1 (de) 2000-07-15
KR100242679B1 (ko) 2000-03-02
EP0846620A1 (de) 1998-06-10
DE19650653C1 (de) 1998-05-14
DK0846620T3 (da) 2000-10-02

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