EP0350617A2 - Procédé pour la fabrication, le remplissage et la fermeture d'emballages obtenu à partir d'une bande tubulaire et dispositif pour la mise en oeuvre du procédé - Google Patents

Procédé pour la fabrication, le remplissage et la fermeture d'emballages obtenu à partir d'une bande tubulaire et dispositif pour la mise en oeuvre du procédé Download PDF

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Publication number
EP0350617A2
EP0350617A2 EP19890110205 EP89110205A EP0350617A2 EP 0350617 A2 EP0350617 A2 EP 0350617A2 EP 19890110205 EP19890110205 EP 19890110205 EP 89110205 A EP89110205 A EP 89110205A EP 0350617 A2 EP0350617 A2 EP 0350617A2
Authority
EP
European Patent Office
Prior art keywords
hose
closing
filling
tube
jaws
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Withdrawn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
EP19890110205
Other languages
German (de)
English (en)
Other versions
EP0350617A3 (fr
Inventor
Wolfgang Klinkel
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.)
V.K.HOLDINGS B.V.
Original Assignee
PMB Holding BV
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 PMB Holding BV filed Critical PMB Holding BV
Publication of EP0350617A2 publication Critical patent/EP0350617A2/fr
Publication of EP0350617A3 publication Critical patent/EP0350617A3/fr
Withdrawn legal-status Critical Current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
    • B65B9/10—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
    • B65B9/2014—Tube advancing means
    • B65B9/2028—Rollers or belts
    • 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
    • B65B51/303—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes reciprocating along only one axis
    • 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
    • B65B9/213—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 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
    • 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 present invention relates to a method for forming, filling and closing tubular bag packs, as described in the preamble of claim 1, and an apparatus for performing the method, as described in the preamble of claim 5.
  • a method and a device for carrying it out according to the preamble of this invention are known according to DE-C-3031399.
  • such a device consists of a filling tube for filling the product to be packaged into the packs to be made from a flexible packaging material, with a shaped shoulder at the upper end of the filling tube, over which the web is pulled to form a hose shape, with a web feed device that draws the web from a supply and conveys it to the form shoulder, with a hose feed device arranged on the filling pipe to pull the hose forward along the filling pipe, and with a transverse sealing device provided after the filling pipe for closing of the hose at pack length intervals determined by the feed.
  • the hose feed device has a drive with a slip device, which allows the web to be fed in a single direction, namely in the conveying direction.
  • register marks i.e. markings made on the sheet at a suitable distance.
  • pre-printed markings correspond to the prescribed bag length and are usually used for automatic control of the web feed of the tubular bag machine.
  • the known methods and devices for the production of tubular bag packs thus allow bags of substantially uniform length to be produced without taking due account of the fluctuating properties of the product to be filled.
  • a device for realizing this flat strip is shown, for example, by DE-A-3046710.
  • a device according to the preamble of our invention provides a device for flat striping and for closing the end of the pack, which comprises a frame and a front and a rear closing jaw which can be moved in a generally horizontal direction between an open and a closed position an actuator is provided on the frame for moving the locking jaws between the open and the closed position and a partially open position in which the locking jaws are moved towards one another but not yet fully closed in a manner suitable for closing a package, and at which strip elements are arranged on the closing jaws and are movable with them in order to grasp the tube made of packaging material from opposite sides and to close it almost completely when the closing jaws are in their Intermediate position are located, and in which means are connected to the frame, which are suitable for closing it together with the actuating element bake and move the stripping elements, the latter in their intermediate position, these means being suitable for causing a generally vertical, downward movement of the closing jaws and the strip
  • This known device allows the above-described problems of the generic tubular bag machine of our invention to be solved, but has the disadvantage that the entire mechanism of the cross-closing device has to be moved up and down in the vertical direction and at high speed of the bag production. Since the transverse locking device naturally has a high mass, very high forces arise during the up and down movement mentioned, which have to be mastered and are in any case disadvantageous with regard to the functioning of the machine. The result is that the maximum possible production of a tubular bag machine equipped with this device is limited by the resulting high forces.
  • the object of the present invention is now to propose a machine for forming, filling and closing tubular bag packs, as defined in the preamble of claims 1 and 5 of the invention, which permits the production of fully filled bags or "stripped" bags and does not have the disadvantages or the restrictions of the last-mentioned known solution.
  • the return of the hose and the formation of the transverse constriction should take place essentially simultaneously. This results in a particularly gentle stripping of the product in the sense of the invention, since the movements can take place more slowly and for the return conveyance it is not necessary to first wait until the transverse constriction has been formed. So you also gain time, i.e. You can increase the production of the machine without having to accept a loss in quality.
  • FIG. 1 a tubular bag packaging machine according to the invention is shown in a schematic and axonometric representation.
  • 1 denotes a roll made of a suitable packaging film.
  • a suitable packaging film is usually printed and has markings 2 in particular on the edge, which are used for the controls of the machine, as will be described later.
  • the roller 1 is driven in the conveying direction as required by means of a motor 4, which drives a friction wheel pressed against the surface of the roller.
  • the arrow f indicates the direction of rotation of the roller 1 in accordance with the direction of conveyance of the film 3.
  • the film 3 is then driven via a roller combination best known as a dancer roller combination T, the function of which is to balance the film requirements of the work organs to come later and the delivery roller.
  • the dancer roller combination T thus makes it possible, in a manner known per se, to make the conveying movements in the zone of the work organs described later, which movements have to be done relatively quickly and precisely, independently of the inertia of the large and heavy roller 1.
  • the dancer roll combination T can in particular, but does not have to serve within the scope of this invention, to replicate film material deliver when the film material reserve in the dancer roll combination 4 is exhausted.
  • the motor 4 is put into operation by a certain amount of funding in the direction f when the roles of the dancer role combination T have fallen below certain limits of the material reserve.
  • the film 3 After passing through the dancer roll combination, the film 3 arrives at a pair of rolls 5, 6, which consists of two rolls forming a so-called clamping line.
  • the rollers 5 and 6 are compressed by means not shown, and the film 3 is by the nip of the pair of rollers, i.e. passed through the point of contact of both rollers 5 and 6.
  • the roller 6 is rotated by a motor 7, the properties and functions of which will be explained in detail later.
  • the pair of rollers 5, 6 has the function of controlling the movements of the film 3 between the dancer roll combination 4 and the actual working elements of the machine and, in particular, of ensuring that the film web is always tensioned evenly and is displaced without wrinkling becomes.
  • rollers 8 and 9 following the pair of rollers 5, 6, of which roller 9 is mounted in a stationary manner, while roller 8 can move easily between the stationary rollers 6 and 9 by means of two tensioning levers 10 (only one of which is shown) and spring 11, correspond to an inexpensive, known roller arrangement to achieve a tension-controlled feeding of the film to the working organs.
  • the film guide members described so far are merely the example of a possible film conveyor that can be used within the scope of the invention.
  • other constructions can also be imagined within the scope of the invention, since in the sense of the invention it is only required that the film can be guided length-controlled and with low inertia to the working elements of the machine by means of a clamping point 5,6.
  • the guide tube is usually called a filling tube, because it fills the filling material into the bags to be formed.
  • the filling pipe 14 has in its upper part a funnel-shaped opening 15 through which constant amounts of the filling material are introduced into the pipe at very specific filling phases by means of metering devices, not shown.
  • the tube Immediately after the shape shoulder 13, the tube has an open seam 16, in which the film material probably overlaps slightly but is not yet connected.
  • the longitudinal closure device 17 now serves, which is shown schematically in FIG. 1 as a vertically lying box and is equipped with heating elements.
  • the longitudinal locking device is also known in the prior art and therefore does not need to be described further here in terms of structure and function. It should only be mentioned that it does not matter whether it works as a sealing or welding device or according to any other sealing method.
  • a film e.g. Puller belt pair 19/20 known from DE-C-3031399.
  • the two trigger belts 19 and 20 of the pair are arranged laterally from the filler tube 24, preferably essentially symmetrically to the longitudinal closure device 17. They convey the hose 18 by clamping it between the inner run of each belt 19, 20 and the surface of the filling pipe 14.
  • Both belts 19, 20 are driven together by means of a motor 21 and suitable transmission elements, e.g. Gear wheels 22, 23, driven. It is now a characteristic feature of the invention that the motor 21 is reversible, i.e. the trigger belt 19, 20 can be driven in both directions. If they are only driven in the “normal conveying direction”, then they convey the hose 18 along the filling pipe 14 from top to bottom in FIG. 1, while when the hose 18 is conveyed back, it is moved along the filling pipe 14 from bottom to top.
  • cross-closure device 24 which consists of two locking jaws 25, 26 and generally also contains a knife 27 for separating the individual bags after their completion.
  • the cross-closure device 24 corresponds in its construction to the known prior art: however, it is distinguished in the sense of the present invention in that it has a double-stage locking mechanism which is not shown in FIG. 1 and, for example, in detail of a possible embodiment variant in FIG. described later - is shown, by means of which the cross-closure device 24 can be closed completely to form the transverse seam (this state is just shown in FIG.
  • FIGS. 2a to 2f in which the machine according to the invention is shown in simplified form only with the filling and closing elements, the sequence of operations according to the invention is shown in sequential form.
  • FIG. 2a shows the state in which a finished bag was separated shortly beforehand by the knife 27 (not shown, cooperating with the jaw 25) and the filling material in the tube closed at the bottom was already filled through the filling tube 14 at the closure device 24 has been.
  • the cross-closure mechanism 24 is opened, i.e. the two jaws 25 and 26 start to separate. This movement is indicated by the arrows m in Figure 2a.
  • the hose 18, in which there is already filling material, is thus freed in its lower part.
  • the trigger belts 19, 20 are put into operation by the motor 21 in the normal conveying direction of the hose 18 (indicated by the arrows n): the hose 18 therefore begins to move down.
  • FIG. 2b shows the phase in which the cross-locking jaws 25, 26 have reached the maximum mutual distance and are therefore stationary in this position. This is indicated in Figure 2b by the fact that no more arrows m are drawn. In this position, the greatest width of the bag must in principle be able to pass freely through the open jaws 25, 26: the arrows n indicate that the downward conveying movement of the hose is continued by the motor 21.
  • phase shown in FIG. 2c is not essential to the invention.
  • the invention can namely also be implemented if the closing of the cross-locking jaws 25, 26 is waited until the movement of the hose in the direction n stops. However, you lose a period of time in the course of the operations.
  • FIG. 2d now shows the most important phase of the method according to the invention, namely the phase of "stripping" or "flat striping” of the bag.
  • the hose 18 has already reached the lowest point of its movement in the normal conveying direction. Note the position of the marking 2a in FIG. 2d: it lies below the cross-locking device 24.
  • the jaws 25, 26 of the cross-locking device 24 stand still (no more arrows o) at a mutual distance x, at which the hose 18 is still between the jaws 25.26 can pass unhindered, but the product can no longer.
  • the width of the gap x is chosen between 0.5 and 10 mm, a width x between 2 and 4 mm having proven particularly advantageous. It can thus be seen that the movement of the tube 28 in the normal conveying direction is first carried out in a greater length A + y than the desired bag length A (equal to the distance between two successive markings 2, cf. also FIG. 1), and that subsequently in the phases of FIGS. 2d and 2e, the excess length y is conveyed back, so that the stripping of the bag 28 is realized without any vertical movement of the cross-closure device 24.
  • FIGS. 2d and 2e further shows what is to be understood with the distance y.
  • the marking 2a is placed below the cross closure device 24.
  • FIG. 2e in which the return movement of the hose 18 and the bag 28 is finished, the marking 2a has just come between the jaws 25, 26, since the transverse wear seam should coincide with the marking 2a.
  • y is therefore the length of the path of the marking 2a between the position of FIG. 2d and that of FIG. 2e, as was indicated in FIG. 2e, in which the position of the marking 2a in FIG. 2d was also shown in broken lines with 2b.
  • the length y should advantageously be between 10 and 75% of the bag length.
  • the motor 7 is also reversed at the same time as the motor 21, whereby it may be advantageous to ensure that the motor 7 does a little more Requires film back when the motor 21 offers. This means that the film 3 always remains tense even during the return movement.
  • the motor 7 does not necessarily have to be driven during the conveyance in the normal conveying direction if the pull through the pull-off belts 19, 20 is sufficient to ensure safe transport of the film and the tension of the film 3 thus generated does not become inadequate for the latter.
  • the motor 7 is therefore preferably also selected as a pulse-controllable stepper motor, which may only be excited for the return movement while being dragged through the film 3 in the normal conveying direction.
  • FIG. 3 shows the time course of the movements of the hose or the cross-closure device.
  • Curve F relates to the conveying movement of the hose, while curve G represents the movements of the cross-closure device.
  • Time T is plotted on the abscissa of both curves F and G.
  • the ordinate shows the path W run through the tube 18 (or through the film 3), while in the case of curve G the mutual distance D between the jaws 25 and 26 of the cross-locking device 24 is plotted on the ordinate.
  • the curve F shows that at the time t 1, the hose, after prior separation of the finished hose, is set in motion in the normal conveying direction. This corresponds to the beginning of a cycle of bag production and the state in FIG. 2f. This forward movement lasts until time t5, and the hose is moved in this time period by the amount A + y in the normal conveying direction.
  • the time t5 corresponds to the state shown in Figure 2d. At this point, the movement of the hose is reversed, i.e. from this point on the hose is conveyed in the opposite direction.
  • the curve G shows that even before the time t 1, ie at the time t 1 - ⁇ t, the locking jaws 25, 26 open movement started. At the time t 1 they are already open, ie they have released the hose 18 for transport in the normal conveying direction. The opening movement of the closing jaws 25, 26 lasts until the time t 2, which represents the state of FIG. 2 b. Between the times t2 and t3 the jaws remain in their maximum open position according to Figure 2b. At time t3 and until time t4, the jaws 25, 26 gradually close until they have reached the mutual distance x, which is the gap width for stripping the bag, at time t4. This state corresponds to that of Figure 2d.
  • the locking jaws 25, 26 remain in this position until the time t7: during the period t4-t7, the hose 18, as explained above, is conveyed back - more precisely during the shorter period t5-t6 - and stripped off.
  • the closing movement of the jaws 25, 26 begins until their complete completion at the time t8.
  • the cross-closure device 24 then remains closed until the time t9, and during the period t8-t9 the closure and the separation of the bag 28 takes place by actuating the knife 27.
  • the period t9-t10 then corresponds to the ⁇ t at the beginning of the cycle.
  • the time course shown can of course experience minor changes within the scope of the invention. For example, before the time t5 the hose 18 can stand still for a certain period of time t3'-t5, ie the reversal of the conveying direction of the hose 18 can be carried out with a short standstill, as shown in dashed lines in curve F.
  • these and other minor adjustments such as, for example, taking into account the accelerations and decelerations of the hose 18, in principle do not change the course of the movements according to the present invention, as shown in FIG. 3.
  • a first possibility to improve this condition is to design the edges 29, 30 (FIG. 1) of the closing jaws 25, 26, which are downstream in the normal conveying direction of the hose 18, from a poorly heat-conducting material. These edges 29, 30 can thus supply the tube 18 with less heat in this zone below the actual closure zone during the closure operation, with the result that the bag 28 can detach itself better from the jaws after the separation.
  • FIGS. 4a and 4b show a further possibility for getting the described problem under control, namely the use of so-called squeegees.
  • the closing jaws 25, 26 shown schematically in FIGS. 4a and 4b (which in reality still contain heating elements and the knife 27) each have a movable scraper strip 31 and 32 in their lower part.
  • the scraper strips 31, 32 are inserted in a recess 33, 34 of each locking jaw 25, 26, which serves as a guide, and are pressed against the interior of the cross-locking device 24 by springs 35, 36.
  • Lugs 37, 38 serve as a stop for the movement of the scraper strips 31, 32, as is better shown in FIG. 4b.
  • Figure 4a now shows the locking jaws 25, 26 in their closed state, corresponding to Figure 2f, i.e. practical during the closure operation.
  • the scraper strips 31, 32 are pressed against one another by the springs 35, 36.
  • the scraper strips 31, 32 remain in mutual contact by the action of the springs 35, 36 until the jaws 25, 26 have opened so far that the lugs 37, 38 with the squeegees 31,32 come into play.
  • the scraper strips 31, 32 thus press the bag 28 formally from the jaws 25, 26 during the described first phase of the opening movement of the jaws 25, 26, so that it has to detach from these, even if the film material of the bag 28 is slightly against the Sealing jaws 25, 26 remained stuck.
  • the scraper strips 31, 32 are also useful, in the context of this invention, during the entire return of the hose 18 for the scraper. Even during this operation, in which the tube is moved between the jaws with the warm closure jaws 25, 26 opened up to the gap width x, there is a certain "risk of sticking" of the tube 18.
  • the gap width x is determined by the cold edges of the scraper strips 31, 32, as shown in FIG. 4b, instead of the warm inner surfaces 39 of the closing jaws 25, 26.
  • the use of such scraper strips 31, 32 is therefore of great advantage especially when carrying out the method according to the present invention.
  • FIGS. 5 and 6 show a top view and a section through a suitable mechanism for the movement of the cross-closure device 24 according to the two-stage movement sequence according to curve G of FIG. 3 required for the implementation of the invention.
  • FIGS. 5 and 6 realizes the advantages of great simplicity, is suitable for realizing the short cycles and allows the device, in particular the gap width x between the closing jaws 25, 26, to be adjusted quickly.
  • the sealing jaws are again identified by the same reference numbers 25, 26 as in FIGS. 1 to 3: they are essentially in a horizontal position in the tubular bag packaging machine of the invention.
  • the locking jaw 25 is firmly connected to a supporting beam 40, which in turn is guided to and fro in two bushes 43, 44 by means of two longitudinal guides 41 and 42.
  • the locking jaw 26 in turn is firmly connected in the middle to a guide 45, which can also slide back and forth in a bushing 46.
  • the longitudinal guide 41 is coupled with a connecting rod 47 to a connecting rod 48 which is articulated on its other side with an eccentric lever 48.
  • the longitudinal guides 42 and 45 are coupled to corresponding connecting rods 50 and 51, respectively, and corresponding eccentric levers 54 and 55, respectively, via corresponding connecting rods 52 and 53, respectively.
  • the eccentric levers 49, 54 and 55 all sit eccentrically on a common shaft 56 which is rotatably mounted in the machine frame (not shown further) with suitable bearing blocks 57.
  • Each lever 49, 54 and 55 is constructed practically the same and the eccentricities of the levers 49 and 54, both of which serve the transverse movement of the locking jaw 25, are absolutely the same, so that the jaw 25 can be displaced in parallel.
  • the eccentricity of the lever 55, which serves for the transverse movement of the locking jaw 26, can be different from that of the levers 49 and 54, since the length of the translational movement of the jaw 26 need not be the same as that of the jaw 25.
  • levers 49, 54 and 55 of equal length and the same eccentricities are advantageously chosen.
  • levers 49 and 54 are mounted eccentrically on the shaft 56 with respect to the lever 55, so that when the shaft 56 rotates, the longitudinal guides 41, 42 are displaced in one direction, while the longitudinal guide 45 is displaced in the opposite direction.
  • the shaft 56 is rotated by a motor 58.
  • Figure 6 shows the device of Figure 5 in side elevation, since it represents a section through the line I-I of Figure 5.
  • the levers 49, 54 and 55 from the opposite side of the shaft 56, on which they are mounted eccentrically by means of suitable roller bearings 59, by means of an eye 60 (only one of which is visible in FIG. 6) can pivot about an associated axis 61.
  • the axes 61 belong to the piston axes 62 of cylinder-piston units 63, which are articulated by means of pivot bearings 64 at a fixed location on the machine. Only one of these units is visible in Figure 6, but it is understood that each eccentric lever 49, 54 and 55 has its own cylinder-piston unit 63.
  • the axes 61 (as shown in FIG. 6) are all on the same straight line and the cylinder-piston units are not moved, the axes act as pivot axes fixed in space, and the length of the longitudinal movement of the locking jaws 25 and 26 depends only from the eccentricity of levers 48, 54 and 55, respectively. on the amplitude of the angle of rotation by which the shaft 56 is rotated by the motor 58 per working cycle.
  • the eccentricity of the levers 48, 54 and 55 can be selected such that when the total eccentricity present in the eccentrics is used, the locking jaws 25 and 26 are brought closer to one another up to the gap width x. This is the case in the example of FIG. 6. Overcoming the gap width x in order to close the jaws 25, 26 completely in order to implement the closing operation can then be done very well by means of a suitable displacement by the cylinder-piston units 63 of the pivot axes 61 of the eccentric levers 48, 54 and 55, whereby the device can be relayed such that the jaws 25, 26 are closed "elastically", ie one of the jaws (eg 26) with the adjustable pressure of the pressure medium on the corresponding piston of its cylinder-piston unit 63 against the other jaw 25 is present. For this purpose, no stop is provided in the longitudinal direction for the piston of the cylinder-piston unit 63 of the lever 55, so that its piston can adapt to any position of the jaw 25 (while overcoming, for example, the force of
  • Another way to achieve the same movements is e.g. to provide the use of a reversible, pulse controlled, dynamic motor 58.
  • a reversible, pulse controlled, dynamic motor 58 By appropriately selecting the eccentricities of the levers 48, 54 and 55, the angle of rotation in both directions of the shaft 56 and the stoppages of the motor 58, the same effect can be achieved, as can be determined without difficulty.
  • the control elements required to control such a motor 58 in the above sense and synchronized with the motor 21 of the trigger belts 19 and 20 so that the curves F and G of FIG. 3 can be realized are well known to every control expert and do not form part of the subject matter of this invention . Their description is therefore omitted.
  • the knife 27 for separating the finished bag is also shown schematically in FIG. In the example in FIG. 5, the knife 27 is installed in the jaw 25 and is actuated by means of a pneumatic cylinder-piston unit 66. However, it is clear that the knife 27 could also be built into the jaw 26 and operated by other means.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Package Closures (AREA)
EP89110205A 1988-07-15 1989-06-06 Procédé pour la fabrication, le remplissage et la fermeture d'emballages obtenu à partir d'une bande tubulaire et dispositif pour la mise en oeuvre du procédé Withdrawn EP0350617A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2714/88 1988-07-15
CH271488 1988-07-15

Publications (2)

Publication Number Publication Date
EP0350617A2 true EP0350617A2 (fr) 1990-01-17
EP0350617A3 EP0350617A3 (fr) 1990-04-11

Family

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EP89110205A Withdrawn EP0350617A3 (fr) 1988-07-15 1989-06-06 Procédé pour la fabrication, le remplissage et la fermeture d'emballages obtenu à partir d'une bande tubulaire et dispositif pour la mise en oeuvre du procédé

Country Status (5)

Country Link
US (1) US4965986A (fr)
EP (1) EP0350617A3 (fr)
JP (1) JPH02152610A (fr)
AU (1) AU621631B2 (fr)
CA (1) CA1314002C (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995021092A1 (fr) * 1994-02-01 1995-08-10 David Leonard Watkins Appareil de soudage etanche de sac
DE19539465A1 (de) * 1995-10-24 1997-04-30 Tetra Laval Holdings & Finance Vertikales Form-Füll- und Siegelverfahren zur Herstellung von Fließmittelpackungen
EP0798215A1 (fr) * 1996-03-28 1997-10-01 The Procter & Gamble Company Procédé d'assemblage d'emballages remplis
DE102004029430A1 (de) * 2004-06-18 2006-01-05 Rovema Verpackungsmaschinen Gmbh Vorrichtung zum Verschweißen und Durchtrennen eines Folienschlauches
DE19545812B4 (de) * 1995-12-08 2006-08-31 Rovema Verpackungsmaschinen Gmbh Vorrichtung zum Transportieren einer Hüllstoffbahn zu einer Verpackungsstation
WO2008053846A1 (fr) 2006-10-31 2008-05-08 Ishida Co., Ltd. Machine à emballer faisant les sacs, et procédé d'emballage faisant les sacs
DE102009043470B4 (de) * 2008-10-01 2015-09-17 Gk Industries Gmbh Verpackungsmaschine
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DE102004029430A1 (de) * 2004-06-18 2006-01-05 Rovema Verpackungsmaschinen Gmbh Vorrichtung zum Verschweißen und Durchtrennen eines Folienschlauches
WO2008053846A1 (fr) 2006-10-31 2008-05-08 Ishida Co., Ltd. Machine à emballer faisant les sacs, et procédé d'emballage faisant les sacs
EP2088081A1 (fr) * 2006-10-31 2009-08-12 Ishida Co., Ltd. Machine à emballer faisant les sacs, et procédé d'emballage faisant les sacs
EP2088081A4 (fr) * 2006-10-31 2011-11-23 Ishida Seisakusho Machine à emballer faisant les sacs, et procédé d'emballage faisant les sacs
CN105217155A (zh) * 2007-01-26 2016-01-06 多种吸附技术公司 吸附剂包装袋
DE102009043470B4 (de) * 2008-10-01 2015-09-17 Gk Industries Gmbh Verpackungsmaschine

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AU3700889A (en) 1990-01-18
EP0350617A3 (fr) 1990-04-11
JPH02152610A (ja) 1990-06-12
AU621631B2 (en) 1992-03-19
US4965986A (en) 1990-10-30
CA1314002C (fr) 1993-03-02

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