EP1203717A1 - Verfahren und Vorrichtung zur Steuerung der Höhe einer Bahn in einer Verpackungsmaschine - Google Patents

Verfahren und Vorrichtung zur Steuerung der Höhe einer Bahn in einer Verpackungsmaschine Download PDF

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Publication number
EP1203717A1
EP1203717A1 EP01309332A EP01309332A EP1203717A1 EP 1203717 A1 EP1203717 A1 EP 1203717A1 EP 01309332 A EP01309332 A EP 01309332A EP 01309332 A EP01309332 A EP 01309332A EP 1203717 A1 EP1203717 A1 EP 1203717A1
Authority
EP
European Patent Office
Prior art keywords
web
cylinder
pressure
height
feed rollers
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.)
Withdrawn
Application number
EP01309332A
Other languages
English (en)
French (fr)
Inventor
Kevin L. Hook
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.)
Kloeckner Bartelt Inc
Original Assignee
Kloeckner Bartelt 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
Application filed by Kloeckner Bartelt Inc filed Critical Kloeckner Bartelt Inc
Publication of EP1203717A1 publication Critical patent/EP1203717A1/de
Withdrawn legal-status Critical Current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
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/06—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it
    • B65B9/08—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it in a web folded and sealed transversely to form pockets which are subsequently filled and then closed by sealing
    • B65B9/093—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it in a web folded and sealed transversely to form pockets which are subsequently filled and then closed by sealing the web having intermittent motion
    • 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
    • B65B5/00—Packaging individual articles in containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, jars
    • B65B5/02—Machines characterised by incorporation of means for making the containers or receptacles
    • B65B5/022—Machines characterised by incorporation of means for making the containers or receptacles for making bags
    • 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
    • B65B57/02—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of binding or wrapping material, containers, or packages
    • B65B57/04—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of binding or wrapping material, containers, or packages and operating to control, or to stop, the feed of such material, containers, or packages
    • 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
    • B65B59/00—Arrangements to enable machines to handle articles of different sizes, to produce packages of different sizes, to vary the contents of packages, to handle different types of packaging material, or to give access for cleaning or maintenance purposes
    • B65B59/003—Arrangements to enable adjustments related to the packaging material
    • 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
    • B65B59/00—Arrangements to enable machines to handle articles of different sizes, to produce packages of different sizes, to vary the contents of packages, to handle different types of packaging material, or to give access for cleaning or maintenance purposes
    • B65B59/02—Arrangements to enable adjustments to be made while the machine is running
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/032—Controlling transverse register of web
    • B65H23/038—Controlling transverse register of web by rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/31—Features of transport path
    • B65H2301/311—Features of transport path for transport path in plane of handled material, e.g. geometry
    • B65H2301/3113—Features of transport path for transport path in plane of handled material, e.g. geometry vertical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/32—Orientation of handled material
    • B65H2301/321—Standing on edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/30—Forces; Stresses
    • B65H2515/34—Pressure, e.g. fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/10—Sensing or detecting means using fluids, e.g. pneumatics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/69—Form fill-and-seal machines

Definitions

  • the present invention relates to packaging machines, and more particularly relates to horizontal form, fill, and seal packaging machines.
  • Packaging machines are generally known in which a continuous web of material is converted into a plurality of individual pouches.
  • the continuous web of material is folded in half over a plow to form two continuous side panels joined by a bottom fold.
  • the folded web is passed through a series of seal bars which form transverse seals between the side panels, thereby forming a strip of pouches interconnected by transverse seals.
  • a cutter cuts through each transverse seal to form individual pouches with unsealed top edges.
  • the individual pouches are transferred to a pouch filler, filled with product, and sealed.
  • the sealed pouches are then collected for transport.
  • Machines of this type may be categorized as either horizontal or vertical machines, depending on the general direction of web travel.
  • the present invention relates to horizontal packaging machines in which the web travels horizontally.
  • the type and volume of product being packaged often determines whether the packaging process should use a continuously or intermittently advancing web.
  • Scale fillers require relatively long periods to fill a pouch. As a result, slower cycle continuous motion or intermittent motion is required to provide additional fill time. In addition, larger volume fills require more time, and therefore intermittent motion through the filler may be necessary. More free flowing products, such as sugar, may be dispensed using a diving funnel suitable for filling continuously advancing pouches.
  • U.S. Patent No. 5,722,217 to Cloud discloses a packaging machine for use with a continuously advancing web.
  • the '217 device uses a sealing drum to form the vertical seals of the pouches. Sealing wires are circumferentially spaced about the sealing drum to provide sealing points.
  • the web is entrained about the drum and the drum is rotated so that seals are formed as the web continuously advances.
  • the '217 device further fills the pouches while they are still connected and therefore the web must be continuously advanced through the pouch filler section as well. It is not seen, however, that the '217 device is operable with an intermittently advancing web since it would be difficult to control the sealing drum so that it starts and stops at the appropriate times.
  • the web can slowly shift up and down.
  • the shifting can create problems in the pouch manufacturing such as misalignment of seals, pouches cut incorrectly, etc. Additionally, the web may drop when the packaging machine is started.
  • One of the causes of the shifting is the tension on the web as it pulls through the feed rollers of the machine.
  • the feed rollers are balanced using a set of springs located at the top and bottom of the feed rollers.
  • the web gets "unbalanced" in several ways. First, when the machine is stopped the web can sag due to heat from the seal bars and be much looser than the running tension. This can cause the web to shift a large distance very quickly.
  • a general aim of the present invention is to provide a packaging machine that automatically adjusts the height of the web that is operable with both intermittently and continuously advancing webs.
  • a related object of the present invention is to provide an adjustment mechanism that can be fit on existing machines.
  • present invention provides a packaging machine in which the tension of a feed roller is automatically controlled based upon the position of the web.
  • the present invention provides a pneumatic control for adjusting the tension of the feed roller.
  • the position of the web is determined and the web is shifted up or down by adjusting the tension of the feed roller assembly of the packaging machine.
  • the packaging machine 10 produces pouches 12 from a continuous web 14 of material.
  • the web 14 has pre-printed registration marks 62 at spaced intervals corresponding to the desired pouch width. The position of the registration marks is known with respect to the printed artwork.
  • the web is made of sealable material, which includes heat-sealable material (such as polyethylene or polypropylene) and pressure-sensitive cold seal film.
  • heat-sealable material such as polyethylene or polypropylene
  • pressure-sensitive cold seal film The embodiments described below are directed mainly to a machine 10 running heat-sealable web material.
  • the packaging machine has an infeed section 4 which supplies the folded web 14 to a sealing section 6.
  • the planar web material is typically provided as a wound roll 16.
  • the infeed section 4 has a reel 18 for supporting the roll 16.
  • the reel 18 rotates to unwind the roll 16, thereby dispensing the web 14.
  • the reel 18 may be conventionally controlled or may have a dedicated unwind motor 20 for varying an unwind speed.
  • the web 14 is threaded over tension rollers 22 and a plow assembly 24 for folding the web to form side panels 26 joined at a common bottom edge 28. As illustrated in FIG. 1, the bottom edge 28 is formed with a V-shape.
  • the plow assembly 24 may also include a gusset blade (not shown) for forming a W-shaped bottom edge.
  • the folded web 10 is passed through a pair of infeed rolls 30 to cleanly define the fold lines in the web.
  • the infeed rolls 30 may also pull the web through the first portion of the packaging machine, as described in greater detail below.
  • the web 14 next travels through a sealing portion of the machine 10 in which any of a number of pouch forming operations take place.
  • the web 14 first passes through a bottom or first seal station 32 for forming a bottom seal 34, such as a delta seal, in the web 14.
  • the web 14 next passes through a side seal station 38 which forms vertical side seals 40 in the web.
  • the web 14 is formed as a strip of pouches interconnected at the side seals 40.
  • the seal stations 32, 38 may use heated seal bars to form seals in heat-sealable web material, or may use unheated seal bars when the web material is a cold seal film. If heated, the seal bars have a heating element such as a heat tube extending therethrough.
  • the heat tube is preferably electrically operated and controlled to provide a desired sealing temperature at the surface of the seal bar.
  • the seal stations 32, 38 are operable to form seals in the web 14 as the web advances. Further details of seal stations may be found in U.S. Patent Application No. 09/185,355, filed November 3, 1998, which is hereby incorporated by reference.
  • the sealing stations 32, 38 operate in a duplex mode, in which the web 14 advances two web widths between each actuation of the seal bars.
  • the bottom seal bars 36 are two pouch widths wide to simultaneously form two bottom seals 34.
  • the side seal station 38 carries two pairs of side seal bars 42.
  • the machine 10 may also be operated in a simplex mode, whereby the web 14 is advanced a single pouch width between each actuation. In simplex mode, the bottom seal bars 36 are only one pouch width wide, and the side seal station 38 has a single pair of side seal bars 42.
  • the seal bars are operated to engage the web as the web advances for both continuous and intermittent web motion. It will be appreciated that for intermittent web motion, the machine 10 of the present invention could be operated so that the seal bars engage the web during dwells, as is conventional. Alternatively, the seal bars contact the web as the web advances, regardless of whether the web is advancing continuously or intermittently. By operating the seal stations in this manner, the seal bars will always be in contact with the web for a sufficient period of time to form the seals regardless of the dwell time between each intermittent advance of the web. Furthermore, the machine operates in a similar fashion for both continuous and intermittent web motion, thereby simplifying the controls and providing a machine which operates in a consistent manner.
  • a pair of feed rollers 44 are located downstream of the seal stations to pull the web through the sealing section of the machine 10.
  • the feeder rollers 44 are positioned to pinch the web 14, thereby frictionally advancing the web.
  • the feeder rolls are operable both continuously and intermittently.
  • a variable speed motor such as drive roll servomotor 80 (see FIG. 7), is connected to and operates the feeder rollers.
  • a cutter is positioned immediately downstream of the feeder rollers 44.
  • the cutter is adapted to cut the web at the formed side seals as the web advances.
  • the cutter comprises a pair of cutter rolls 46 having a plurality of circumferentially spaced blades 48 on one of the rolls and a a plurality of similarly spaced cutting surfaces 50 on the other roll.
  • the cutter rolls 46 are mounted for rotation so that a blade 48 contacts the web 14 at the same time as an associated cutting surface 50 to thereby sever a leading pouch 12 from the web.
  • Each pouch severed by the cutter rolls 46 is then transferred to a pouch filling section by a transfer mechanism.
  • Feed roller controller 102 senses the edge of the web using web sensor 104.
  • Web sensor 104 may be an air operated or an electrical sensing device.
  • the web sensor 104 senses the edge of the web by forcing air through both sides of the sensor and detecting air back pressure. A change in back pressure indicates the position of the web.
  • Feed roller controller 102 increases the pressure on the bottom of the feed rollers 44 and lowers the pressure at the top of the feed rollers 44 when it determines the web is rising.
  • This action forces the web down.
  • the feed roller controller 102 detects that the web falls below the proper height, the web is driven back up by decreasing the pressure on the bottom of the feed rollers 44 and increasing the pressure at the top of the feed rollers 44.
  • the feed roller controller 102 adjusts the pressure using pneumatic cylinders 106, 108.
  • Pneumatic cylinder 106 is mounted at the top of the feed roller 44.
  • Pneumatic cylinder 108 is located at the bottom of the feed roller 44.
  • the feed roller controller 102 increases pressure on the feed roller 44 by increasing air in the pneumatic cylinders 106, 108.
  • Feed roller controller 102 decreases pressure by reducing air pressure in the pneumatic cylinder.
  • a spring (not shown) located in the feed roller forces the pneumatic cylinder rod 107, 109 back.
  • the web height is determined based upon web sensor 104 (step 200).
  • the web height is then compared to one or more thresholds (step 202).
  • the web height is compared to a single threshold.
  • the web height is compared to an upper threshold and a lower threshold. If the web height is greater than the single threshold (or alternatively, the upper threshold), the feed roller controller 102 drives the web down by increasing the pressure on the bottom of the feed rollers 44 via cylinder 108 and lowers the pressure at the top of the feed rollers 44 via cylinder 106 (step 206).
  • the feed roller controller 102 drives the web up by decreasing the pressure on the bottom of the feed rollers 44 via the cylinder 108 and increasing the pressure at the top of the feed rollers 44 via the cylinder 106 (step 210). Steps 200-210 are repeated after driving the web down, driving the web up, or if the web is at the desired position (or alternatively, within the upper and lower threshold) for as long as the the packaging machine is operating.
  • Figure 4 shows one of the feed rollers 44 and the web sensor 104.
  • Figure 5 shows the feed rollers 44, the web sensor 104, and the pneumatic cylinders 106, 108.
  • one of the shafts 45 of the feed rollers 44 is attached to mounting plate 110.
  • the feed roller control system 100 increases the air pressure in pneumatic cylinder 106, the rod 107 pushes on roller assembly plate edge 120, which results in an increase in pressure at that end of the feed roller as previously described.
  • the spring (not shown) of the feed roller 44 pushes the rod 107 back.
  • the feed roller controller 100 operates pneumatic cylinder 108 the same way it operates pneumatic cylinder 106.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
EP01309332A 2000-11-03 2001-11-02 Verfahren und Vorrichtung zur Steuerung der Höhe einer Bahn in einer Verpackungsmaschine Withdrawn EP1203717A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US24561100P 2000-11-03 2000-11-03
US245611P 2000-11-03

Publications (1)

Publication Number Publication Date
EP1203717A1 true EP1203717A1 (de) 2002-05-08

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EP (1) EP1203717A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2478421A1 (es) * 2014-02-21 2014-07-21 Bossar Packaging, S.A. Máquina envasadora con dispositivo compensador de errores de impresión del film
CN118047109A (zh) * 2024-04-16 2024-05-17 齐齐哈尔市双富生物科技有限公司 一种畜牧兽医药品定量装瓶装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060218884A1 (en) * 2005-03-30 2006-10-05 Sealed Air Corporation Adjustable infeed bed for packaging apparatus
CN112830310A (zh) * 2013-03-25 2021-05-25 株式会社汤山制作所 药剂分包装置、药剂分包纸余量判断方法和药剂分包纸卷筒
EP3348417A1 (de) * 2017-01-13 2018-07-18 Neopost Technologies Kaltsiegelpapiervorrichtung und verfahren zur herstellung von poststücken
CN109319550B (zh) * 2018-10-27 2020-12-15 嘉兴市大明实业有限公司 一种消防用卷水带装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4212422A (en) * 1978-09-18 1980-07-15 Rca Corporation Web position controller for web transport systems
US4960234A (en) * 1987-10-01 1990-10-02 Focke & Co. (Gmbh & Co.) Apparatus for separating webs of material into (two) part webs
US5181365A (en) 1991-12-09 1993-01-26 Minnesota Mining And Manufacturing Company Method and apparatus for forming individual pouches from a continuous web and packaging a product in the individual pouches
EP0771730A2 (de) * 1995-11-06 1997-05-07 Cloud Corporation Beutelfüllmaschine mit Mitteln zum Herstellen von Beuteln mit maximalem Volumen
US5722217A (en) 1995-11-17 1998-03-03 Cloud Corporation Method and apparatus for continuosusly forming, filling and sealing packages while linked together

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3712183A (en) * 1971-06-17 1973-01-23 Owens Illinois Inc Notch sensing control system for a partition assembly machine
DD123663A1 (de) * 1975-05-12 1977-01-12
JPH0480100A (ja) * 1990-07-24 1992-03-13 Mimaki Eng:Kk プロッタ
JP3258203B2 (ja) * 1994-07-26 2002-02-18 三菱電機株式会社 シート搬送装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4212422A (en) * 1978-09-18 1980-07-15 Rca Corporation Web position controller for web transport systems
US4960234A (en) * 1987-10-01 1990-10-02 Focke & Co. (Gmbh & Co.) Apparatus for separating webs of material into (two) part webs
US5181365A (en) 1991-12-09 1993-01-26 Minnesota Mining And Manufacturing Company Method and apparatus for forming individual pouches from a continuous web and packaging a product in the individual pouches
EP0771730A2 (de) * 1995-11-06 1997-05-07 Cloud Corporation Beutelfüllmaschine mit Mitteln zum Herstellen von Beuteln mit maximalem Volumen
US5722217A (en) 1995-11-17 1998-03-03 Cloud Corporation Method and apparatus for continuosusly forming, filling and sealing packages while linked together

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2478421A1 (es) * 2014-02-21 2014-07-21 Bossar Packaging, S.A. Máquina envasadora con dispositivo compensador de errores de impresión del film
EP2910473A1 (de) * 2014-02-21 2015-08-26 Bossar Packaging, S.A. Verpackungsmaschine mit einer Ausgleichsvorrichtung für Foliendruckfehler
CN118047109A (zh) * 2024-04-16 2024-05-17 齐齐哈尔市双富生物科技有限公司 一种畜牧兽医药品定量装瓶装置

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