EP0489400B1 - Strippereinrichtung für eine Schlauchbeutel-Verpackungsmaschine - Google Patents

Strippereinrichtung für eine Schlauchbeutel-Verpackungsmaschine Download PDF

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Publication number
EP0489400B1
EP0489400B1 EP91120761A EP91120761A EP0489400B1 EP 0489400 B1 EP0489400 B1 EP 0489400B1 EP 91120761 A EP91120761 A EP 91120761A EP 91120761 A EP91120761 A EP 91120761A EP 0489400 B1 EP0489400 B1 EP 0489400B1
Authority
EP
European Patent Office
Prior art keywords
stripper
drive
tools
crank
movement
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
EP91120761A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0489400A1 (de
Inventor
Roman Dr. Dipl.-Ing. Kammler
Dirk Dipl.Ing. Wenzel
Werner Schneider
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 EP0489400A1 publication Critical patent/EP0489400A1/de
Application granted granted Critical
Publication of EP0489400B1 publication Critical patent/EP0489400B1/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
    • B65B65/00—Details peculiar to packaging machines and not otherwise provided for; Arrangements of such details
    • B65B65/02—Driving gear
    • 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
    • B65B51/306—Counter-rotating devices
    • 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
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/207—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles the web advancing continuously
    • 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
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/2007—Means for stripping or squeezing filled tubes prior to sealing to remove air or products from sealing area

Definitions

  • the invention relates to a stripper device for a tubular bag packaging machine, with two stripper tools arranged on both sides of the movement path of the tubular bag, which are movable by means of a drive device.
  • a film strip is passed over a shaped shoulder and, by means of a longitudinal sealing device, is formed into a hose which encloses a filling tube or format tube through which the product to be packaged can be introduced into the film tube.
  • the individual bags containing the product are each closed by means of a bottom or top seam, the top seam of the preceding bag and the bottom seam of the following bag being formed at the same time.
  • a device of this type is previously known, for example, from US-A-4,663,917.
  • US-A-4,391,081 shows a stripper device for a tubular bag packaging machine in which the movement of the stripper tools and the cross-sealing jaws is coupled to one another.
  • the cross welding jaws can be moved via a four-bar mechanism or scissor mechanism, the up and down movement of the stripper tools being caused by the opening and closing movement of the cross welding jaws. Due to the rigid coupling of the up and down movement of the stripper tools, this embodiment of the invention does not allow any adaptation and optimization of the stripping process with regard to the sealing process.
  • the stripper device is designed in its movement sequence so that the stripper tools can perform a stripping movement in addition to the movement speed of the film tube. It is also necessary for the system to carry out the stripping process in the closing area of the cross sealing jaws.
  • the stripper device must therefore be introduced with the cross sealing jaws open in the space formed between them and the film tube. The stripper tools are then closed and thus placed against the film tube and then moved downwards. This means that the cross sealing jaws must remain open while the stripper device is in use. The cycle time available thus limits the cross sealing time and the time in which the stripper device is in use.
  • the invention has for its object to provide a stripper device of the type mentioned, which with a simple structure and reliable usability allows adjustment of the speed of movement of the stripper device so that the time for the stripping process and the sealing process can be maximized.
  • the stripper device according to the invention is distinguished by a number of considerable advantages. Since, according to the invention, the stripper tools are mounted on a carriage which can be moved by means of the crank drive, it is possible to move the stripper tools directly into or remove them from the gap between the open cross weld jaws in relation to the movement of the cross welding jaws. This avoids, on the one hand, that the stripper tools collide with the cross-welding jaws, and, on the other hand, no additional control and / or drive means need to be provided in order to actuate the stripper device itself.
  • the drive of the cross welding jaws and the drive device of the stripper tools are coupled out of phase with one another to form a common drive.
  • This makes it possible to actuate both groups of components by means of a common drive.
  • This leads to a considerable simplification of the tubular bag packaging machine.
  • the phase-shifted coupling results in a precisely adapted and set movement sequence. It is thus ensured that the linear stripper movement is out of phase with the circular movement of the cross sealing jaws.
  • the cross sealing jaws are each mounted on bearing levers which carry out an essentially circular arc-shaped rotary movement, so that the sealing jaws are moved on a circular path, preferably on a D-shaped circular path, which is flattened in the direction of the film bag.
  • the stripper tools are opened and closed during a cycle, ie separated from the film tube or placed against it for stripping.
  • a further movement of the stripper tools takes place in the longitudinal direction of the film tube, this movement of the stripper tools taking place at a high speed in order to strip off the bag.
  • the carriage on which the stripper tools are mounted is moved back and forth in the longitudinal direction of the longitudinal axis of the bag, this movement being generated, for example, by a crank operation which is coupled in terms of drive with the rotary movement of the levers for mounting the cross-sealing jaws.
  • a crank mechanism is also connected to the crank mechanism, which causes the stripper tools to open and close.
  • the stripper device is discussed in detail below.
  • crank drive comprises means for changing the crank stroke. It follows that the crank stroke during one revolution, i.e. does not remain constant in the usual way during a work cycle. This opens up the possibility of carrying out the longitudinal movement of the slide at different speeds.
  • the stripper device can thus be inserted at a slow speed upwards into the space between the open cross sealing jaws, while the stripping or stripping stroke directed downwards can take place at a relatively high speed. The time portions of a cycle that can neither be used for the transverse sealing process nor for the stripping process can thus be minimized.
  • the stripper tools can preferably be actuated with a cam drive device, wherein a cam track or cam disc can be used. This eliminates the need for an additional drive, so that this also results in a significant simplification of the overall design. This means that only one drive is used to drive the sealing jaws and to synchronize the stripper tools.
  • safety catches are provided, which can be curved in order to close the stripper rods in good time if the closing pulse is not triggered in good time or is completely absent. This is particularly important if the air supply for the locking cylinder is not working properly.
  • a safety circuit which controls the drive device of the stripper tools and the drive of the cross welding jaws.
  • This safety circuit preferably comprises a sensor which checks the opening or closing process of the stripper tools. If the synchronization between the dosing device and the packaging machine fails, it can happen that a bag is filled with product due to a triggered double fill in the sealing area. In this case, the stripper tools hit a bulging bag and are unable to push the product down. The stripper tools thus inevitably remain in the open position. The cross-welding jaws subsequently put into operation would now hit the stripper tools and destroy the entire mechanism.
  • a sensor is used, for example in the form of an inductive sensor, which is mounted on the pneumatic cylinder for actuating the stripper tools.
  • the piston of the pneumatic cylinder can, for example, be provided with a magnetic material which generates a signal in the inductive sensor.
  • the safety circuit leads to the jaw and stripper drive being switched off if the piston of the pneumatic cylinder has not passed the sensor.
  • the position of the sensor can be chosen arbitrarily. Optical monitoring means can also be used.
  • the crank drive comprises a drive rod which is pivotally mounted on the slide with its free end and which is pivotally mounted on a rotatable crank by means of a guide pin by means of a guide pin, and that the guide pin is mounted along the Slidable crank is appropriate.
  • the guide pin is guided in an elongated hole in the crank. This construction is particularly favorable at high movement speeds and very short cycle times.
  • a cam track element on which the guide pin is guided is mounted in the region of the crank.
  • the cam track element can be configured, for example, in the form of a cam disk or a guide cam.
  • the guide pin is thus guided on the cam track of the cam disc with each revolution of the crank.
  • the guide pin is prestressed against the guideway of the cam disc by means of a prestressing element. This results in a particularly simple configuration of the cam.
  • the cam is preferably mounted in the region of the axis of rotation of the crank, the mounting being designed such that the cam cannot be rotated together with the crank. It is also particularly advantageous if the cam plate is designed to be interchangeable, which opens up the possibility of adapting the movement of the stripper tools to different production conditions, for example bag sizes or stripping specifications.
  • the ellipsoid-like area has a longer crank length in order to move the slide upwards with slow movement between the open cross-welding jaws, while the arc-like area serves to move the slide down very quickly during the stripping process.
  • the drive device for actuating the stripper tools is designed in the form of a pneumatic cylinder mounted on the slide.
  • this drive is designed with a relatively low weight, on the other hand, the air can be supplied in a very simple manner via flexible hoses.
  • the stripper device shown in the figures shows a film tube 25 fed via a filling tube or format tube 16 to be stripped off by a pair of cross-welding jaws 24 before a bottom or top seam is formed.
  • the stripper device comprises two stripper tools 14 which are essentially in the form of parallel rod-like elements.
  • the stripper tools 14 are each mounted on a lever 18, the two levers 18 being connected to one another in a scissor-like manner at a common hinge point, as is shown in FIG. 1.
  • At the free ends of the levers 18 further levers 19 are articulated, so that opening and closing of the stripper tools 14 results from a change in the distance between the pivot axes of the levers 18 and the levers 19.
  • FIG. 2 shows the stripper tools in solid lines in the open state, while the dashed lines represent the stripper tools in a closed state.
  • the stripper tools are opened and closed by a drive device 15, which is designed in the form of a pneumatic cylinder. This is actuated via an air supply 20, which is only shown schematically in FIG. 3.
  • the pneumatic cylinder and the stripper tools 15 and the levers 18, 19 are mounted on a slide 13 which can be displaced along a guide rail 10 in the longitudinal direction of the film tube 25.
  • a bearing 12 is formed on the lower region of the slide 13, to which a drive rod 9 is pivotably articulated.
  • the end of the drive rod 9 comprises, as can be seen in particular from FIG. 3, a guide pin 8 which is guided in a slot 7 of a crank 6.
  • the guide pin 8 is in the elongated hole 7 guided by means of a guide bush 22.
  • the crank 6 is pivotally mounted on a machine frame, not shown in detail, and is fixedly connected to a toothed belt pulley 5, via which a toothed belt 2 is guided.
  • a cam roller 21 is mounted, which rolls on a cam element 4 to be described in detail.
  • a prestressing element spring
  • a prestressing element spring
  • the cam track element 4 which is disc-shaped, is not rotatable, but is interchangeably attached to a housing 17 of the cheek block of the transverse sealing jaws, the cam track element 4 being fastened in the region of the axis of rotation 26, as can be seen in FIG. 3.
  • FIG. 1 shows the cam track element 4 in a side view. From this representation it follows that the left half of the curved path element 4 is essentially circular, while the right half is ellipsoidal.
  • the arcuate side of the cam track element 4 leads to a relatively rapid downward movement of the slide 13 during the stripping process, while the ellipsoidal side increases the effective crank length 6 and thus leads to a slower upward movement of the slide 13.
  • FIG. 4 shows a further exemplary embodiment of the invention, in which the drive for the linear movement of the stripper tools takes place out of phase with the movement of the transverse welding jaws 24.
  • the cross-welding jaws are each mounted on a lever 100, two levers 100 being arranged one above the other, so that, together with the axes of rotation of the two levers 100 and a coupling rod 101 each articulated on these levers 100, a four-bar mechanism results.
  • the coupling rod 101 is connected to the cross welding jaw 24.
  • the latter additionally has heating devices.
  • the drive shaft not shown in detail, on which the lever 100 is placed rotates in a predetermined direction. Coupled with this movement, a drive lever 103 is rotated, which is rotatably supported at 104. The rotational movement of the lever 100 also results in a rotational movement of the drive lever 103.
  • the drive lever 103 is connected to a stripper tool mechanism, which is designed as shown in FIGS. 1 to 3, via a link 104 which is designed to be variable in length.
  • a pull rod 105 is provided, which is articulated on the stripper tool mechanism, for example the slide 13.
  • the lower end of the pull rod 105 runs in a curved path 106.
  • the pull rod 105 serves to close or open the stripper tools 14.
  • the curved path 106 has, for example, an area 106A which effects the closing operation, while in an area 106B the Stripper tools 14 are open.
  • the inner area 106C of the cam track 106 is an area in which the stripper tools 14 are closed.
  • a cam disk can also be used instead of the cam track 106.
  • An additional drive can be saved by using a cam track 106 or a cam disk.
  • the rotary movement of the lever 100 and the drive lever 103 are out of phase according to the invention, for example by 37 degrees.
  • 5 to 8 each show different operational sequences of the arrangement shown in FIG. 4.
  • 5 shows a process in which the stripper tools 14 are displaced upward when the cross sealing jaws 24 are open and are in a state in which the closing process of the stripper tools 14 is initiated, as is shown by the arrows.
  • 6 shows a closed state of the stripper tools 14, in which the downward stripping movement begins.
  • FIG. 7 shows an operating state in which the stripping process has continued, while FIG. 8 shows the end of the operating cycle in which the two transverse sealing jaws 24 are pressed against one another while the stripper tools 14 move apart to release the film bag.
  • 5 to 8 result in the rotary movement of the drive lever 103 and the lever 100.
  • the position of the pull rod 105 shows in which area of the curved path 106 (not shown in FIGS. 5 to 8) the end region of the pull rod 105 is performed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Package Closures (AREA)
  • Making Paper Articles (AREA)
EP91120761A 1990-12-05 1991-12-03 Strippereinrichtung für eine Schlauchbeutel-Verpackungsmaschine Expired - Lifetime EP0489400B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9016520U 1990-12-05
DE9016520U DE9016520U1 (de) 1990-12-05 1990-12-05 Stripper

Publications (2)

Publication Number Publication Date
EP0489400A1 EP0489400A1 (de) 1992-06-10
EP0489400B1 true EP0489400B1 (de) 1994-09-21

Family

ID=6860007

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91120761A Expired - Lifetime EP0489400B1 (de) 1990-12-05 1991-12-03 Strippereinrichtung für eine Schlauchbeutel-Verpackungsmaschine

Country Status (5)

Country Link
US (1) US5203145A (it)
EP (1) EP0489400B1 (it)
AT (1) ATE111838T1 (it)
DE (2) DE9016520U1 (it)
ES (1) ES2060278T3 (it)

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Publication number Priority date Publication date Assignee Title
DE69220206T2 (de) * 1991-10-03 1997-10-16 Ishida Scale Mfg Co Ltd Querheissversiegelungseinrichtung in einer beutelherstellungsmaschine
US5412927A (en) * 1993-11-03 1995-05-09 Kawashimaseisakusyo Co., Ltd. Longitudinal bag-making, filling and packaging machine
AU675805B2 (en) * 1993-11-03 1997-02-20 Kawashimaseisakusyo Co., Ltd. Longitudinal bag-making, filling and packaging machine
DE4412577A1 (de) * 1994-04-13 1995-10-19 Rovema Gmbh Quersiegel-Vorrichtung für eine Schlauchbeutel-Verpackungsmaschine
DE69618941T2 (de) * 1995-04-03 2002-11-14 Molins Plc, Milton Keynes Verpackungsmaschine mit strippereinrichtung
DE19535438A1 (de) * 1995-09-23 1997-03-27 Rovema Gmbh Vorrichtung zum Bewegen mindestens eines Bauteils oder eines sonstigen Gegenstandes
DE19627892A1 (de) * 1996-07-11 1998-01-15 Rovema Gmbh Schlauchbeutelmaschine
US5752370A (en) * 1996-11-13 1998-05-19 Triangle Package Machinery Company Continuous motion drive for form, fill and seal machine
US5852920A (en) * 1996-11-13 1998-12-29 Triangle Package Machinery Company Longitudinal seam sealer for continuous motion form, fill and seal machine
DE29703924U1 (de) * 1997-03-04 1998-04-02 Hassia-Redatron GmbH, 35625 Hüttenberg Schlauchbeutelmaschine mit zumindest zwei Quersiegelbacken
DE69809069T2 (de) 1997-03-21 2003-03-20 Molins Plc, Blakelands Vertikale form-füll-siegel-maschine
US6006497A (en) 1997-03-26 1999-12-28 Reichhold Chemicals, Inc. Methods and apparatus for preparing a hot melt adhesive
JP3902631B2 (ja) 1997-04-25 2007-04-11 株式会社川島製作所 製袋充填包装機におけるエンドシール時間の制御方法
US6038839A (en) 1998-11-06 2000-03-21 Triangle Package Machinery Company Longitudinal seam sealer for polyethylene material
US6052971A (en) * 1998-11-09 2000-04-25 Hayssen, Inc. Offset stripper and stripping method for vertical form, fill and seal machine
DE29911847U1 (de) * 1999-07-07 2000-11-23 Vision Verpackungstechnik GmbH, 35305 Grünberg Einrichtung zum Herstellen von mit Schüttgut gefüllten Schlauchbeuteln
FR2841229B1 (fr) * 2002-06-19 2006-05-26 Aa Man Dispositif de collecte de dechets
US20080066430A1 (en) * 2006-09-15 2008-03-20 Triangle Package Machinery Company Continuous motion drive mechanism for a form, fill, and seal machine
US20090127323A1 (en) 2007-11-15 2009-05-21 Bernhard Zeiler Packaging machine and packages made therewith
US20110177435A1 (en) * 2010-01-20 2011-07-21 International Business Machines Corporation Photomasks having sub-lithographic features to prevent undesired wafer patterning
US8539741B2 (en) * 2010-02-10 2013-09-24 Triangle Package Machinery Company Seal and cut method and apparatus
ES2353713B2 (es) * 2010-11-12 2012-07-20 Bossar Packaging, S.A. Dispositivo para el accionamiento de mecanismos de movimiento oscilante en máquinas envasadoras.
JP2014009028A (ja) * 2012-07-02 2014-01-20 Sanko Kikai Kk ヒートシール金具タイプ自動包装機
JP6239957B2 (ja) * 2013-12-03 2017-11-29 株式会社イシダ 製袋包装機および製袋包装システム
US10358244B2 (en) 2015-10-26 2019-07-23 Triangle Package Machinery Co. Rotatable sealing jaw assembly for a form, fill and seal machine
EP3241770B1 (en) * 2016-05-06 2019-02-27 Tetra Laval Holdings & Finance S.A. A packaging unit for producing sealed packages containing a pourable food product from a tube of packaging material
CA3001624A1 (en) * 2016-05-19 2017-11-23 Vermeer Manufacturing Company Systems for encasing articles in a protective wrap
WO2018158066A1 (en) * 2017-02-28 2018-09-07 Gea Food Solutions Weert B.V. Improved inspection of a vertical flow-wrapper

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DE4005077C2 (de) * 1990-02-17 1995-02-09 Rovema Gmbh Strippereinrichtung für eine Schlauchbeutel-Verpackungsmaschine

Also Published As

Publication number Publication date
ES2060278T3 (es) 1994-11-16
US5203145A (en) 1993-04-20
EP0489400A1 (de) 1992-06-10
ATE111838T1 (de) 1994-10-15
DE59103038D1 (de) 1994-10-27
DE9016520U1 (de) 1991-02-21

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