EP0677443A1 - Dispositif de soudage transversal d'une machine d'emballage pour manchons tubulaires - Google Patents

Dispositif de soudage transversal d'une machine d'emballage pour manchons tubulaires Download PDF

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Publication number
EP0677443A1
EP0677443A1 EP95105472A EP95105472A EP0677443A1 EP 0677443 A1 EP0677443 A1 EP 0677443A1 EP 95105472 A EP95105472 A EP 95105472A EP 95105472 A EP95105472 A EP 95105472A EP 0677443 A1 EP0677443 A1 EP 0677443A1
Authority
EP
European Patent Office
Prior art keywords
drive
cross seal
sealing
stripping
cross
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.)
Granted
Application number
EP95105472A
Other languages
German (de)
English (en)
Other versions
EP0677443B1 (fr
Inventor
Hartmut Metz
Walter Dr. Baur
Dieter Korzer
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.)
Rovema Verpackungsmaschinen GmbH and Co KG
Rovema GmbH
Original Assignee
Rovema Verpackungsmaschinen GmbH and Co KG
Rovema 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 Rovema Verpackungsmaschinen GmbH and Co KG, Rovema GmbH filed Critical Rovema Verpackungsmaschinen GmbH and Co KG
Publication of EP0677443A1 publication Critical patent/EP0677443A1/fr
Application granted granted Critical
Publication of EP0677443B1 publication Critical patent/EP0677443B1/fr
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
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
    • B65B51/30—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes

Definitions

  • the invention relates to a cross-sealing device for a tubular bag packaging machine with at least one pair of cross-sealing jaws, which can be placed on a plastic tube that may be moved in the direction of its longitudinal axis, in this case transverse to its longitudinal axis by a transverse sealing seam in each case in individual tubular bags.
  • a cross seal device of this type is already known from German Offenlegungsschrift DE 37 32 033 A1. It ensures that the area of the later transverse sealing seam is kept free of packaging material until the sealing has taken place.
  • the movement of the scraper bars is included coupled to that of the cross seal jaws in order to avoid failed attempts by such forced guidance. It must be ensured that the stripping bars are already below the cross-sealing jaws when they produce the sealing seam, and they have to move faster along the sealing area than the plastic tube in order to remove any packaging material in the area of the subsequent sealing seam to intervene the previous, actual packaging volume.
  • the scraper bars are connected to the cross seal jaws by means of pivoted levers and, like the cross seal jaws, are guided by a cam control.
  • the invention is therefore based on the object of designing a cross-sealing device of the type specified in the introduction in such a way that highly sensitive and expensive mechanical positive guides for the scraper bars are no longer required and the components used are low-wear and easily replaceable without extensive set-up work, and that they are user-friendly the system can be easily adapted to different packaging tasks.
  • an endless, flexible drive belt is provided on both sides and symmetrically to the sealing area, that the scraper bars are attached in pairs to the two drive belts, and that the drive belts continue from a common one Drive can be driven synchronously via a drive roller and that a control device is also provided for this drive, which controls the movement of the stripping bars independently of the movements of the plastic hose and the cross seal jaws, the drive belts preferably each being formed by an endlessly closed toothed belt become.
  • a fixed mechanical assignment of the movement of the stripping bars to that of the cross seal jaws is no longer necessary in the cross seal device according to the invention.
  • the belt drive provided instead has the advantage that the components used are not subject to constant mechanical wear and require no expensive special manufacture, but can be put together from commercially available parts and easily replaced by replacing them.
  • the special control of the scraper bars allows the cross-sealing device to be adapted to very different packaging tasks, for example taking into account the respective packaged goods and the type and size of the plastic tube used and the tubular bag packaging.
  • An arrangement of the drive belt that is spatially adapted to the movement of the stripping bars occurs when the preferably spur-toothed inside of the drive belt is guided over one of each of the drive rollers and a plurality of first tensioning rollers, the drive roller being expediently provided at the end of the sealing area, so that the stripping bars are pulled
  • the belt of the drive belt is always located when you cover the plastic hose.
  • the drive belts which are arranged symmetrically in space with respect to the sealing area, can be driven easily synchronously in such a way that the drive torque is introduced into the drive rollers by means of a common belt drive connected to the drive. if the slippage of the belt drive on the drive rollers is minimized by at least one second tension roller, it is best that the second tension roller (s) is (are) arranged so that the angle of wrap on the two drive rollers is almost the same.
  • a servo motor is provided for the drive, which is speed-controlled by a position controller which regulates the time-dependent position of the stripping bars, which position can be measured in a simple manner by a proximity switch, for example via a servo amplifier.
  • a position controller which regulates the time-dependent position of the stripping bars, which position can be measured in a simple manner by a proximity switch, for example via a servo amplifier.
  • Such position controls can be carried out very precisely and without inertia, especially with electronic measuring and control means, so that the functional separation of the drives from transverse sealing jaws and stripping bars has no disadvantageous consequences for their spatial assignment.
  • a considerable improvement of the prior art is also the possibility created by the invention of changing the setpoints of such a position control, for which purpose it is expedient if the position controller has an incremental encoder for the speed control of the servo motor.
  • An adjustment can be carried out in a user-friendly manner if a display is provided on the position controller as a setpoint setting for determining the stripping path covered by the stripping bars that clamp the plastic tube and strip the packaging material into the tubular bag packaging within the sealing area.
  • the sealing area is arranged vertically, because the packaged goods are subjected to gravity and cannot flow back into the area of the sealing seam when they have already been stripped off.
  • an upper stripping path piece can be set, which is just below that on the transverse sealing seam adjacent cross seal jaws ends, but it is instead or additionally also possible that a lower stripping path piece is adjustable, which begins just below the cross seal jaws resting on the cross seal seam. Both stripping path pieces together form the stripping path, which can be modified in this way.
  • a transverse sealing device consists of two elastic and arranged mirror-symmetrically on a rectilinear sealing area 1
  • Endless drive belts 2 which are each guided via associated first tensioning rollers 21 and (FIG. 4) are each driven by a drive roller 22.
  • a plastic tube 3 is conveyed vertically downward through the sealing area 1 in the direction specified by a directional arrow 31, packaging material 30 being introduced into the plastic tube 3 in a known manner and not further explained in the drawing.
  • FIG. 1 two mutually movable cross seal jaws 4 are indicated, which are shown in somewhat greater detail in Fig. 4.
  • the cross seal jaws 4 are each provided with two sealing surfaces 41, which produce two parallel cross seal seams on the squeezed plastic tube 3.
  • a cutting device is provided between the sealing surfaces 41, which is omitted in the drawing for the sake of clarity and serves to separate the tubular bag packages 32 from the plastic tube 3.
  • the details are customary.
  • the cross-sealing jaws 4 are synchronized with one another, but are driven independently of the drive belts 2 and only lie temporarily against the plastic tube 3 within the sealing region 1 for the purpose of sealing and separating the tubular bag packaging 32, schematically in FIG. 1 a dotted representation of the cross-seal jaws 4 which have already been removed from the area of the plastic tube 3 is indicated.
  • the way of driving the cross seal jaws 4 is not related to the invention; an example can be found above Publication can be taken.
  • Stripping rods 23 are attached in pairs to the drive belts 2 in such a way that the mirror symmetry of the drive belts 2 is maintained.
  • Fig. 1 two pairs, in Fig. 4 four pairs of scraper strips 23 can be seen, suggesting in this way that the paired number of scraper bars 23 is relatively variable and can be adapted to the respective packaging tasks.
  • a position controller 5 is used as the central control unit for the control of the drive belts 2 of the transverse sealing device according to the invention, which controls the operation of the drive belts 2 as a function of a setpoint value adjustment that can be made on a display 51 and of the actual value for the position of the stripping bars 23 controls, which is measured by a proximity switch 52 (Fig. 4).
  • the input variables obtained in this way are processed electronically in a suitable manner; the output variables dependent thereon for regulating the position, speed and acceleration of the stripping bars 23 are - amplified in a servo amplifier 53 - fed to a servo motor 61 which drives the drive rollers 22 via a gear 62 (FIG. 4).
  • a position control can also take place if the position controller 5 is equipped with an incremental encoder for the speed of the servo motor 61.
  • the stripping path 10 means the distance within the sealing area 1 that is required for complete removal of packaging material 30 from the area of the plastic tube 3 intended for the sealing and within which the stripping bars 32 along the slower moving plastic tube 3, this jammed between them, to be moved.
  • Fig. 3 shows that it is possible to set an "upper” stripping path 10a, which ends just below the position which the cross seal jaws 4 assume during the production of the cross seal seam.
  • a "lower” stripping path 10b begins at this point and extends in the direction of the directional arrow 31.
  • the entire stripping path 10 as well as the stripping path pieces 10a and 10b can be changed within limit values fixed to the device.
  • a drive 6, which consists essentially of the servo motor 61 and the gear 62, drives the drive rollers 22. It is provided with a belt drive 64 according to FIG. 4, second tensioning rollers 63 ensuring that a sufficient wrap angle on the drive rollers 22 is provided slip-free, synchronous drive guaranteed.
  • One fixed piece on the transverse sealing device 7 is underlaid on the drawn run of the respective drive belt 2, so that it cannot deflect when the stripping rods 23 on the plastic hose 3 are effective.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Package Closures (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
EP95105472A 1994-04-13 1995-04-11 Dispositif de soudage transversal d'une machine d'emballage pour manchons tubulaires Expired - Lifetime EP0677443B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4412577 1994-04-13
DE4412577A DE4412577A1 (de) 1994-04-13 1994-04-13 Quersiegel-Vorrichtung für eine Schlauchbeutel-Verpackungsmaschine

Publications (2)

Publication Number Publication Date
EP0677443A1 true EP0677443A1 (fr) 1995-10-18
EP0677443B1 EP0677443B1 (fr) 1997-10-22

Family

ID=6515194

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95105472A Expired - Lifetime EP0677443B1 (fr) 1994-04-13 1995-04-11 Dispositif de soudage transversal d'une machine d'emballage pour manchons tubulaires

Country Status (3)

Country Link
US (1) US5575137A (fr)
EP (1) EP0677443B1 (fr)
DE (2) DE4412577A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996032328A1 (fr) * 1995-04-01 1996-10-17 Molins Plc Machine d'emballage a dispositif racleur
GB2314064A (en) * 1995-04-03 1997-12-17 Molins Plc Packaging machine with a stripping device
DE19719338C1 (de) * 1997-05-07 1998-08-06 Rovema Gmbh Quersiegelvorrichtung für eine Schlauchbeutelmaschine
EP0897868A1 (fr) * 1997-08-16 1999-02-24 Rovema Verpackungsmaschinen GmbH Dispositif pour le scellage transversal d'une bande tubulaire

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5752370A (en) * 1996-11-13 1998-05-19 Triangle Package Machinery Company Continuous motion drive for form, fill and seal machine
WO1998042576A1 (fr) 1997-03-21 1998-10-01 Molins Plc Formeuse-remplisseuse-scelleuse verticale
DE19813215A1 (de) * 1998-03-26 1999-09-30 Rovema Gmbh Schlauchbeutelmaschine
US6138442A (en) * 1998-10-13 2000-10-31 Kliklok Corporation Packaging machine with continuous sealing jaw movement
US6052971A (en) * 1998-11-09 2000-04-25 Hayssen, Inc. Offset stripper and stripping method for vertical form, fill and seal machine
US10766641B2 (en) * 2014-12-23 2020-09-08 Frito-Lay North America, Inc. Method and apparatus for a product settler
US10358244B2 (en) 2015-10-26 2019-07-23 Triangle Package Machinery Co. Rotatable sealing jaw assembly for a form, fill and seal machine
DE102017109892A1 (de) 2017-05-09 2018-11-15 Metzner Maschinenbau Gmbh Vorrichtung zur Bearbeitung von Kabeln

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0165819A2 (fr) * 1984-06-20 1985-12-27 Alfred Alexander Taylor Dispositif d'emballage
DE4005077A1 (de) * 1990-02-17 1991-08-29 Rovema Gmbh Strippereinrichtung fuer eine schlauchbeutel-verpackungsmaschine
US5279098A (en) * 1990-07-31 1994-01-18 Ishida Scales Mfg. Co., Ltd. Apparatus for and method of transverse sealing for a form-fill-seal packaging machine

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
US2962843A (en) * 1955-06-02 1960-12-06 Dow Chemical Co Packaging method
US2915866A (en) * 1958-05-12 1959-12-08 Lynch Corp Product settling means for draw type wrapping machine
US2956383A (en) * 1959-05-19 1960-10-18 Hayssen Mfg Company Product settling attachments for packaging machines
US3070931A (en) * 1961-01-10 1963-01-01 Gen Packaging Equip Co Packaging machine
US3307323A (en) * 1965-02-23 1967-03-07 Fener Alfred Anti-clogging packaging machine
IT1067649B (it) * 1976-07-20 1985-03-16 Micheletti Fabrizio Macchina circolare da maglieria con tamburo del programma coassiale e sottostante al cilindro degli aghi
IT1135852B (it) * 1980-06-11 1986-08-27 Gino Rappinari Linea per il confezionamento continuo di contenitori prismatici rettangolari
US4563862A (en) * 1984-10-23 1986-01-14 Kliklok Corporation Package forming apparatus with combined holding and stripper mechanism
DE3732033A1 (de) * 1987-09-23 1989-04-13 Rovema Gmbh Siegelvorrichtung
DE9016520U1 (fr) * 1990-12-05 1991-02-21 Rovema - Verpackungsmaschinen Gmbh, 6301 Fernwald, De
JP2759608B2 (ja) * 1993-04-28 1998-05-28 川澄化学工業株式会社 医療用バッグの製造方法及び製造装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0165819A2 (fr) * 1984-06-20 1985-12-27 Alfred Alexander Taylor Dispositif d'emballage
DE4005077A1 (de) * 1990-02-17 1991-08-29 Rovema Gmbh Strippereinrichtung fuer eine schlauchbeutel-verpackungsmaschine
US5279098A (en) * 1990-07-31 1994-01-18 Ishida Scales Mfg. Co., Ltd. Apparatus for and method of transverse sealing for a form-fill-seal packaging machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996032328A1 (fr) * 1995-04-01 1996-10-17 Molins Plc Machine d'emballage a dispositif racleur
GB2314064A (en) * 1995-04-03 1997-12-17 Molins Plc Packaging machine with a stripping device
GB2314064B (en) * 1995-04-03 1999-07-28 Molins Plc Vertical form fill and seal packaging machines
DE19719338C1 (de) * 1997-05-07 1998-08-06 Rovema Gmbh Quersiegelvorrichtung für eine Schlauchbeutelmaschine
EP0897868A1 (fr) * 1997-08-16 1999-02-24 Rovema Verpackungsmaschinen GmbH Dispositif pour le scellage transversal d'une bande tubulaire

Also Published As

Publication number Publication date
US5575137A (en) 1996-11-19
DE4412577A1 (de) 1995-10-19
EP0677443B1 (fr) 1997-10-22
DE59500827D1 (de) 1997-11-27

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