EP0068141B1 - Vorrichtung zur Umlenkung einer fortlaufenden Folienbahn in einer Verpackungsmaschine - Google Patents

Vorrichtung zur Umlenkung einer fortlaufenden Folienbahn in einer Verpackungsmaschine Download PDF

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Publication number
EP0068141B1
EP0068141B1 EP82104492A EP82104492A EP0068141B1 EP 0068141 B1 EP0068141 B1 EP 0068141B1 EP 82104492 A EP82104492 A EP 82104492A EP 82104492 A EP82104492 A EP 82104492A EP 0068141 B1 EP0068141 B1 EP 0068141B1
Authority
EP
European Patent Office
Prior art keywords
guide
guide rails
parallel
objects
feed
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
Application number
EP82104492A
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German (de)
English (en)
French (fr)
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EP0068141A3 (en
EP0068141A2 (de
Inventor
Roland Horn
Erhardt Glausch
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.)
Beck Packautomaten GmbH and Co KG
Original Assignee
Beck Packautomaten GmbH and Co KG
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 Beck Packautomaten GmbH and Co KG filed Critical Beck Packautomaten GmbH and Co KG
Priority to AT82104492T priority Critical patent/ATE14861T1/de
Publication of EP0068141A2 publication Critical patent/EP0068141A2/de
Publication of EP0068141A3 publication Critical patent/EP0068141A3/de
Application granted granted Critical
Publication of EP0068141B1 publication Critical patent/EP0068141B1/de
Expired 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
    • 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
    • B65B2009/063—Forming shoulders

Definitions

  • the invention relates to a device for deflecting a continuous film web folded along its longitudinal center line in a packaging machine for wrapping a number of objects pushed one behind the other, as described in the preamble of claim 1.
  • objects pushed one behind the other along a horizontal feed plane are surrounded by an endless film web in the manner of a tube.
  • the film is fed from above, essentially perpendicular to the feed plane.
  • the film is folded along its longitudinal center line, so that the two halves of the film web lie flat against one another.
  • the two halves are spread apart in a roof shape and vertically downwards on the sides of the objects to be wrapped. The areas of the film web near the edges are then guided under the objects until they touch below the objects.
  • the roof-shaped diverging foil areas which are referred to below as roof surfaces and touch along a " ridge line" enclose a triangular surface whose upper corner point is defined by the ridge line, while the two lower corner points are determined by the line along which the roof surfaces merge into the vertically downward side surfaces of the film.
  • this triangular surface is inclined with respect to the horizontal, preferably at 45 °, so that the base lies further forward in the direction of advance of the objects than the upper corner point.
  • a horizontally guided film area adjoins the base in the feed direction and forms the upper cover layer of the tubular casing.
  • a disadvantage of this guide was that a wedge separating the two halves of the film was arranged on the inside of the film, which slid along the film as it was advanced and could damage it. Furthermore, a guide shoe could only be used for a wrapping dimension, if the objects to be packaged had different dimensions in width and height, a guide shoe had to be exchanged for another guide shoe.
  • rod-shaped guide elements are used for the deflection for the sheet web, some of which are also mutually adjustable in a complicated manner. Nevertheless, it is not possible with these to adapt the film wrapping to any size of the objects in the desired way.
  • the invention has for its object to improve a generic device such that the guidance of the film is gentler than in known devices and that the film guide can also be easily adapted to different dimensions of the tubular casing.
  • the guide elements that determine the ridge line which fix the halves of the film web together, especially in the area above the triangle points, and on the other hand the two guide rails that form guide surfaces for the films at their free ends and thus the basis of the Define triangular area.
  • a drive for adjusting the mutual spacing of the guide rails is provided, which actuates the drive for the vertical distance between the guide rails and the guide elements defining the ridge edge via gear means such that this distance decreases as the distance between the guide rails becomes smaller and vice versa.
  • the distance from the ridge edge can thus also be adjusted simply by adjusting the distance between the guide rails, so that the triangular surface formed between the guide rails and the ridge line remains similar with different dimensions.
  • the guide rails are at the same time necessarily displaceable parallel to the feed direction in such a way that when the distance is increased, they counter the feed direction of the Ge objects are moved and vice versa.
  • this combination of movements leads to the fact that the front corner points of the guide rails can be displaced along a line during the distance adjustment, which is determined by the fold line of a film web on the underside of the objects.
  • this folding edge which runs obliquely to the feed direction, becomes longer, for example, the point at which the film is folded from the vertical into the horizontal below the objects moves against the feed direction of the objects downstream ; this displacement corresponds to the inevitable displacement of the guide rails against the feed direction when the mutual distance is increased, so that the relative position between the deflection point of the folded film from the vertical to the horizontal below the objects on the one hand and the downstream end of the guide rails on the other hand remains unchanged when the distance changes remains.
  • the folded edge between these two points thus maintains its inclination with respect to the feed plane, provided that the leading edges in the feed plane, along which the film is folded from the vertical plane into the horizontal plane below the objects, are displaced in the same way become like the guide rails.
  • the transmission ratio is selected such that an adjustment of the distance of the guide elements from the plane spanned by the guide rails corresponds to twice the change in the distance of the guide rails in the horizontal plane. This relation ensures that the triangular area remains similar for all distance settings, i.e. aspect ratios and angles are retained.
  • the transmission has a vertical adjusting spindle for adjusting the distance between the guide elements and the plane spanned by the guide rails, and two horizontal adjusting spindles, each arranged transversely to the direction of advance, for one guide rail each, and that the adjusting spindles can be rotated at the same time , the guide rails being displaceable in the opposite direction transversely to the feed direction.
  • This can be achieved, for example, by rotating the vertical adjusting spindle so that both horizontal adjusting spindles are rotated in the same direction; then both adjustment spindles have opposite screw directions.
  • the two horizontal adjusting spindles are driven in the opposite direction when the vertical adjusting spindles are rotated, the screw direction of the two horizontal adjusting spindles can then be the same.
  • Carriers for the guide rails can be mounted on the two horizontal spindles.
  • the guide rails can each be displaced along a guide track arranged in a horizontal plane, which run diagonally in the feed direction from the outside to the center of the feed track. This arrangement enables the above-mentioned simultaneous change in the distance between the guide rails and the position of the guide rails parallel to the feed direction.
  • a sliding body which is fixedly connected to the respectively assigned guide rail and which has a.
  • Driver which can be driven transversely to the feed direction is in a connection which permits a relative displacement parallel to the feed direction. If this driver is driven transversely to the feed direction, for example via the horizontal spindles mentioned above, it moves the guide rails along the guide rails arranged obliquely to the feed direction.
  • the triangular surface is inclined by 45 ° with respect to the horizontal, that the connecting edge extends from the downstream ends of the guide rails to the downstream ends of the outer edges, which are arranged perpendicularly under the guide rails and run parallel to the direction of advance, in the feed surface located guides is arranged in a vertical plane lying parallel to the feed direction and is also inclined by 45 ° with respect to the horizontal that the guideways of the guide rails form an angle of 45 ° with respect to the feed direction and that the ends of the outer edges of the guide can be moved parallel to the guideway of the guide rails are.
  • This preferred embodiment makes it possible to lay the film web around the object without wrinkles and to adapt the insertion in a very simple manner to the width of the objects to be wrapped.
  • the guide rails are connected to a central support via a plurality of parallel pivot levers, a device for adjusting the distance between the two guide rails being held on this support.
  • the device for adjusting the distance between the two guide rails comprises a spindle that can be screwed into the carrier parallel to the longitudinal direction of the guide rails, and if a bearing block is mounted on the spindle that is rotatable and axially immovable is connected to both guide rails.
  • the central support is displaceable parallel to its longitudinal direction and can be fixed in different positions on the machine frame.
  • the guide rails are fastened to a holder which is mounted on the machine frame and is guided displaceably thereon, the displacement track having at least one vertical component.
  • the wrapping can be adapted to the height of the objects to be packaged.
  • a spindle drive can be provided to adjust the holder.
  • the holder is displaceable along a guideway which runs parallel to the connecting line between the downstream end of a guideway and the downstream end of the outer edge of a guideway assigned to each guideway, which is perpendicular under each guideway is arranged in the feed plane of the objects and runs parallel to the feed direction.
  • the height of the wrapping can be adapted to the objects, but by moving the holder along this guideway, the ridge edge, the two roof surfaces, the triangular surface in between, the deflection of the roof surfaces into the vertical side surfaces and finally the deflection of the triangular surface into the horizontal top surface remains unchanged, while the displacement of the guide elements and guide rails spanning these surfaces takes place parallel to the described film edge, so that this film edge is only lengthened but completely retains its direction.
  • the guide elements on the holder can be moved parallel to the longitudinal extension of the guide rails and can be fixed in different positions. It is expedient for the guide elements on the holder to be displaceable in the vertical direction and adjustable in different positions.
  • a spindle drive can be provided on the holder for vertical adjustment of the guide elements.
  • the guide elements are rod-shaped and are held on the holder by means of a clamping piece, in which they can be displaced in the longitudinal direction after loosening the clamping piece.
  • plate-shaped guides with outer edges are provided in the feed plane, which can be fixed in different positions in such a way that the distance between the outer edges running parallel to the feed direction can be adapted to the width of the objects to be packaged.
  • the spacing of the edges is also adjusted, so that the folded film halves are folded over by the guide rails into a vertically extending side wall, namely at every spacing of the guide rails.
  • the guides are preferably adjustable along the downstream folding edge of the film web, which is formed by the adjoining parts of each half of the film web below the guide carrying the articles.
  • This preferred displacement option of the guides moves the downstream folding point of the double-lying film from the vertical into the horizontal below the objects, when the distance is increased counter to the direction of advance, so that the folding edge below the objects is only lengthened.
  • a guide rail and a guide are each coupled in such a way that they can be displaced together with them in the same way when the distance between the guide rails changes. This enables the folding edge between the guide rail end and the guide end to be retained and the inclination of this folding edge and also maintains the vertical guidance of the films along the side wall.
  • the film deflection device shown in the figures is used in a packaging machine, not shown in the drawing, in which a number of objects 1, e.g. B. a book pile to be advanced.
  • the purpose of the film deflection device is to place a film web 2 fed perpendicular to the direction of advance of the objects, which is folded along its longitudinal central edge 3 so that the two film web halves 4, 5 lie flat against one another, so as to be tubular around the advanced objects such that they are parallel to the edges of the Areas of the film running beneath the objects lie flat against one another.
  • the objects thus tubularly enveloped by a film are advanced along a feed plane which has a gap in its center.
  • the edge end regions lying flat against one another and projecting downward from the objects protrude through this gap.
  • these areas are welded to one another in a manner known per se, so that the film enveloping the objects is closed in a tubular manner.
  • the deflection of the film web must take place in such a way that this film, which is brought up perpendicularly to the feed direction from above in a vertical plane arranged parallel to the feed direction, does not hinder the entry of the objects pushed one behind the other.
  • the endless film web 2 with the two film halves 4 and 5 lying flat against one another is wrapped around two parallel rollers 6 and 7, which are arranged above the feed plane of the objects parallel to the feed direction.
  • the foils are wrapped around the two rollers in the opposite direction, i. H. seen in cross section, the film has an approximately S-shaped course.
  • Both rollers are provided with an adhesive coating that has a high level of friction compared to the film material. A narrow gap remains between the two rollers, through which the film passes.
  • the second roller 7 is assigned a third roller 8 running parallel to it, and the two film halves pass down between the roller 7 and the roller 8.
  • the third roller 8 can also be replaced by a guide rod.
  • Two guide rails 9, 10, which extend parallel to the direction of advance of the objects and are arranged in such a way that the height and width of the area spanned by them corresponds approximately to the top of the objects 1 to be packaged, in a horizontal plane beneath the rollers.
  • the two film halves 4 and 5 separate below the rollers in the manner of mutually inclined roof surfaces 11 and 12, the " ridge edge" of this roof being defined by the gap between the rollers 7 and 8.
  • the lower edge of these roof surfaces 11 and 12 is determined by the guide rails 9 and 10 over which the two film halves run; then the film halves are guided vertically downwards around guides, not shown in FIG. 1, running parallel to the guide rails 9 and 10, so that they finally rest on the underside of the objects 1, the edge regions of the film halves in the manner described above from protrude from the underside of the objects and lie flat against one another in this area.
  • the two roof surfaces 11 and 12 enclose between them a triangular surface 13, the tip of which lies at the point at which the longitudinal central edge 3 of the film web 2 runs between the rollers 7 and 8, while the other two corner points of the triangular surface 13 through the inlet-side ends 14 or 15 of the guide rails 9 and 10 are formed.
  • the guide rails are so far away from the upper corner of the triangular surface 13 in the feed direction of the objects that the triangular surface is inclined from the upper corner point to the base in the feed direction of the objects, preferably at an angle of 45 °. From the base 16 of the triangular surface 13, the film adjoins the underside of the guide rails 9 and 10 in a horizontal surface 17, which comes to rest on the upper side of the advanced objects and forms the cover layer of the tubular casing.
  • the regions of the film web which are deflected vertically downward over the guide rails 9 and 10 are folded over along an edge 18 and 19 which runs obliquely, preferably at an angle of 45 °, with respect to the film longitudinal direction , so that when the film web is advanced further, the areas of the film web that are initially located on the outside are now arranged on the inside of the tube surrounding the objects and rest directly on the objects 1.
  • the first embodiment is rotatably articulated via parallelogram links 20, 21 to a rail-shaped carrier 22, which runs parallel to the guide rails and is arranged between the guide rails (FIG. 3).
  • the guide rails themselves have a V-shaped cross section and are arranged such that one leg is approximately horizontal and the edges 23 and 24 connecting the two legs are facing away from one another (FIG. 4).
  • two further links 25 and 26 are articulated on the one hand with a guide rail and on the other hand with a bearing block 27, on which a spindle 28 is rotatably mounted and axially immovable relative to the bearing block 27, which is in a thread-- bore is screwed into the carrier 22.
  • the links 25 and 26 can be pivoted relative to the carrier 22, so that the mutual distance between the guide rails can be changed.
  • the guide rails are shown in solid lines in an approximate position, in dash-dotted lines in a more distant position.
  • the rail-shaped carrier 22 is fastened to a holder 29 which has on its underside a groove 30 which runs parallel to the direction of advance of the objects and into which the carrier 22 is immersed.
  • the carrier can be clamped in this groove, for example by a clamping screw 29a screwed into the side of the holder. By loosening this clamping screw, the carrier can be moved along the groove 30, so that the carrier, together with the guide rails mounted on it, can be adjusted to different positions parallel to the feed direction. 2 and 3, a first position of the guide rails is shown with solid lines, a second with dash-dotted lines.
  • a holder 32 for the rollers 6, 7 and 8 or for parallel guide rods replacing the rollers is slidably mounted in the vertical direction on the holder 29 in a vertical sliding guide 31, a spindle 33 being used to adjust the vertical position of the holder 32 relative to the holder 29 can be provided, which is screwed into a nut 34 fixed on the holder 29 and is rotatably and axially immovably connected to the holder 32.
  • the rollers or the guide rods can be adjusted in their distance from the feed plane, so that the height of the ridge edge defined by these elements can be adjusted.
  • the rollers 6, 7 and 8 are shown in an upper position in a solid line, in a lower position in dash-dotted lines.
  • the holder 29 itself is slidably mounted in the vertical direction on the machine frame, the necessary slide guides are not shown in the drawing. For example, this can be done in that the holder is fastened to a cross member 35 (FIG. 4), which is guided on the machine frame in a vertical sliding guide and can be adjusted in the vertical direction via a spindle drive similar to the spindle drive 33 of the holder.
  • the displaceability of the holder 29 with respect to the machine frame and the holder 32 with respect to the holder 29 is indicated in FIG. 2 by the double arrows B and C, respectively. 2 and 4, the holder is shown with solid lines in a lower position, in dash-dotted lines in a higher position.
  • the entire deflection device can be optimally adapted to the respective size of the objects to be wrapped.
  • the height of the objects is adjusted by adjusting the height of the holder 29, and the width of the objects is adjusted by adjusting the distance between the guide rails 9 and 10 by means of the spindle 28.
  • the size of the triangular surface 13 and its inclination can be achieved by changing the vertical distance between the guide rail and rollers or guide rods, that is to say by actuating the spindle 33.
  • the inclination of the triangular surface can also be influenced by moving the carrier 22 parallel to the feed direction. so that in a preferred setting the triangular surface is inclined at 45 ° to the horizontal.
  • the edges 18 and 19 emanating from the lower corner points of the triangular surfaces can also be designed in a horizontal direction by a suitable arrangement of the carrier in such a way that they form an angle of 45 ° with respect to the horizontal.
  • rollers 6, 7 or the guide rods replacing them can be displaceable in the axial direction in the holder 32.
  • the holder 32 can be designed as a clamp holder which fixes the guide rods in the axial direction by means of a clamp screw.
  • the displaceability of the rollers 6, 7 or 8 is characterized in the drawing by the double arrow D.
  • rollers are shown in solid lines in a first position and in dash-dotted lines in a second position.
  • This adjustment option also serves to influence the inclination of the triangular surface 13, namely when the rollers 6, 7 and 8 or the guide rods replacing them, which have clamping elements for the film web, are displaced in the axial direction. Since the clamping elements and also the rollers fix the foils in the axial direction and in particular define the upper corner point of the triangular surface 13, an axial displacement leads to a change in the triangular surface inclination.
  • the distance adjustment of the two guide rails can be combined with the height adjustment of the guide rods or rollers which define the ridge edge, so that when the distance between the guide edges of the guide rails changes simultaneously the vertical distance between the horizontal plane spanned by the leading edges and the ridge edge is also changed. Overall, this ensures that the triangular surface forming between the film web halves retains a similar shape, so that when the distance between the guide rails changes, the same running-in conditions for the film are nevertheless maintained.
  • the basic structure in this exemplary embodiment is the same as in the exemplary embodiment in FIGS. 1 to 5, in particular there is a film guide which corresponds to that shown in FIG. 1.
  • two slide guides 40 and 41 are fastened, in which two guide rods 42 and 43 are displaceable, which carry a holder 44 at their lower end, which functionally corresponds to the holder 29 of exemplary embodiment 1.
  • the guide rods are inclined in the manner shown in FIG. 6 with respect to the horizontal feed plane, in the preferred embodiment at an angle of 45 °, so that they run from top to bottom in the feed direction.
  • An adjusting spindle 45 is provided parallel to the two guide rods 42 and 43, which is rotatably mounted on the holder 44 and which is screwed into an internal thread bearing 46 on the cross member 36 (FIG. 6).
  • the entire holder 44 can be displaced in the direction of the guide rods 42 and 43 by rotating the adjusting spindle 45 with the aid of a crank (not shown in the drawing).
  • a crank not shown in the drawing.
  • the holder is shown with solid lines in a lower position, with dash-dotted lines in an upper position.
  • the holder 44 has a vertical guide rod 47, on which a sliding bush 48 is slidably mounted, which carries a holder 49 for two horizontal guide elements 50, 51 arranged parallel to the feed direction.
  • the guide elements 50, -51 can be designed in the manner of the rollers 6, 7, 8 of the exemplary embodiment of FIGS. 1 to 5, but it is also possible to use two parallel shafts as guide elements which carry pressure elements at their ends, through which the film web is passed through. In this respect, reference is made to the corresponding statements relating to the exemplary embodiment in FIGS. 1 to 5.
  • the sliding bush 48 with holder 49 and guide elements 50, 51 can be moved along the guide rod 47, for this purpose an adjusting spindle 12, which runs parallel to the guide rod 47, is rotatably arranged on the holder 44 and is screwed into a driver 53 connected to the sliding bush 48 ( Fig. 6).
  • the adjusting spindle 52 On the underside of the holder 44, the adjusting spindle 52 carries a bevel gear 54 which meshes with two bevel gears 55 and 56 on the ends of two horizontally arranged adjusting spindles 57 and 58.
  • the vertical adjustment spindle 52 is located in the middle of the feed path, while the two adjustment spindles 57 and 58, the length of which corresponds to half the width of the feed path, extend transversely to the feed path in the horizontal direction .
  • Each of these two adjusting spindles 57 and 58 is screwed into a driver 59 or 60, which can thus be displaced along the adjusting spindle when the adjusting spindles are rotated.
  • Each of these drivers carries, in the manner particularly evident from FIG. 7, a slide rod 61 or 62 which is arranged parallel to the feed direction and onto which a guide bush 63 or 64 is slidably slidably in the longitudinal direction.
  • Each of these guide bushes is rigidly connected to a second guide bush 65 or 66, which is slidably mounted on a further horizontal slide rod 67 or 68.
  • the two slide rods 67 and 68 run obliquely to the feed direction from the outside inwards and meet in the middle of the feed path (FIG. 7). In the preferred embodiment, they each form an angle of 45 ° with the feed direction.
  • the guide bushings 65 and 66 slidably mounted on these slide rods 67 and 68 are rigidly connected to guide rails 9 and 10, which completely correspond to the guide rails 9 and 10 of the exemplary embodiment in FIGS. 1 and 2.
  • the gear ratios are chosen so that a certain change in the distance between the guide elements and the plane spanned by the guide rails corresponds to a double change in the mutual distance between the guide rails. Due to the inclination of the slide rods 67 and 68 relative to the feed direction by 45 °, a displacement of the guide rods in the feed direction (or in the opposite direction) is achieved at the same time, which corresponds to the movement of each guide rail transversely to the feed direction.
  • the guide plates can be moved on a flat surface parallel to a direction that is defined by the folded edge of the film halves below the feed surface. This fold edge is identified in FIG. 1 by the reference symbols 18 and 19, respectively.
  • the plate-shaped guides can be connected to their base in different positions; for this purpose, both the bases and the plates have a series of bores 76 and 77, which likewise run parallel to the folded edges 18 and 19.
  • the film is guided in the same way around guide elements, guide rails and guides lying in the feed plane as in the exemplary embodiment in FIG. 1.
  • the height of the roof above the plane spanned by the guide rails is fixed.
  • the above-described gear connection between the adjusting spindles is re-established, so that a height adjustment and a distance adjustment of the guide rails can now only be carried out together.
  • This setting just described takes place independently of the respective object size and is carried out once when the entire device is started up.
  • the distance between the guide rails is now adjusted to the width of the objects by actuating the adjusting spindle 52.
  • the distance of the guide elements from the plane spanned by the guide rails is changed in the same ratio, so that overall a triangular surface 13 is obtained which is similar to the previous one, i. H. the triangle angles are preserved, as is the aspect ratio of the sides of the triangle surface.
  • the guides 69 and 70 are adjusted such that the outer edges 71 and 72 of these guides lie exactly perpendicularly under the outer edges 23 and 24 of the guide rails 9 and 10.
  • the folding edges 18 and 19 are shortened or lengthened in accordance with the respective width of the objects, so that the points at which these folding edges are deflected to the vertical on the outer edges 71 and 72 of the guides are moved forward or backward in the feed direction. It should be taken into account that the point at which the two edges 18 and 19 converge in the middle of the guideway should be maintained in the feed direction regardless of the respective object width.
  • the guides 69 and 70 lie between the two folded layers of the respective film halves and define the course of the folded edges 18 and 19 of the two film web halves with an edge 73 and 74 which runs obliquely from the outside inwards.
  • the two guides 69 and 70 can be displaced exactly parallel to these folded edges, they always lie with their edges 73 and 74 on the folding edges 18 and 19 in all positions that they can assume, that is to say at all mutual distances between the outer edges 71 and 72 on, the acute-angled corner between the edges 73 and 74 or the outer edges 71 or 72 always exactly defines the point of deflection of the folded edge from the vertical plane into the horizontal plane.
  • the corner point between the outer edges 71 and 72 or the edges 73 and 74 of the guides also moves in the feed direction (or opposite to this) when the distance is adjusted.
  • the end point of the guide rails 9 and 10 also shifts in the feed direction (or in the opposite direction), since the guide rails result from the displacement along the slide rods 67 and 68 experience both a component of motion transverse to the direction of advance and a component of motion parallel to the direction of advance.
  • the displacement parallel to the feed direction is exactly the same as the displacement of the front corner point of the guides 69 and 70, since guides on the one hand and guide rails on the other hand are displaced parallel to one another.
  • the triangular surface 13 is in all cases inclined by 45 ° with respect to the feed plane, so that the triangular surface continues in the area of the folded edges 18 and 19 between the guide rails and the guides.
  • the position at which the downstream folding edge 3 is perpendicular to the top must be selected accordingly inserted folded film sheet runs into the guide elements. This can easily be achieved by appropriate film feeding and possibly a marking along the guide elements corresponding to a certain object width.
  • the described insertion device can also be adapted to the respective height of the objects. This is done in a simple manner by actuating the adjusting spindle 45. As a result, the holder is moved along the guide rods 42 and 43 together with the guide rails and the guide elements and all of the holders and displacement devices assigned to them. These run parallel to the area of the folded edges 18 and 19 between the guide and the guide rail, as can be seen from the dot-dash position of the raised guide rail in FIG. 6. This ensures that the folded edges 18 and 19 are only lengthened or shortened when the object height changes, but the subsequent shape of the roof surfaces and the triangular surface lying therebetween remain completely unchanged during this displacement. Readjustments are therefore no longer possible.
  • the film insertion can be adapted in a particularly simple manner to objects of different widths or heights, the adaptation being able to be carried out completely independently for width and height. All that is required is an actuation of the adjusting spindle 45 (for height adjustment) or an actuation of the adjusting spindle 57 and a displacement of the guides 69, 70 (for changing the width).
  • the running-in conditions of the film, the directions of its folded edges and the contact of the guides on edges on which the films are deflected remain completely intact.
  • FIGS. 1 to 5 features which have been described in connection with the exemplary embodiments of FIGS. 1 to 5 on the one hand and FIGS. 6 to 9 on the other hand can also be used in suitable cases in the respective other exemplary embodiment.
  • Guides 69 and 70 can also be used in the embodiment of FIGS. 1 to 5.
  • the guide elements of the exemplary embodiment of FIGS. 6 to 9, like the guide elements of the exemplary embodiment of FIGS. 1 to 5, can be designed to be adjustable parallel to the feed direction.
  • the gear means for simultaneous adjustment of the mutual distance of the guide rails and the distance of the guide elements from the guide rail plane discussed in the context of the present exemplary embodiment of FIGS. 6 to 9 are not the only possible exemplary embodiment, it is only essential that a simultaneous drive takes place.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
EP82104492A 1981-06-27 1982-05-22 Vorrichtung zur Umlenkung einer fortlaufenden Folienbahn in einer Verpackungsmaschine Expired EP0068141B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82104492T ATE14861T1 (de) 1981-06-27 1982-05-22 Vorrichtung zur umlenkung einer fortlaufenden folienbahn in einer verpackungsmaschine.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3125353 1981-06-27
DE3125353 1981-06-27
DE3152023 1981-12-31
DE19813152023 DE3152023A1 (de) 1981-06-27 1981-12-31 "vorrichtung zur umlenkung einer fortlaufenden folienbahn in einer verpackungsmaschine"

Publications (3)

Publication Number Publication Date
EP0068141A2 EP0068141A2 (de) 1983-01-05
EP0068141A3 EP0068141A3 (en) 1983-11-09
EP0068141B1 true EP0068141B1 (de) 1985-08-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP82104492A Expired EP0068141B1 (de) 1981-06-27 1982-05-22 Vorrichtung zur Umlenkung einer fortlaufenden Folienbahn in einer Verpackungsmaschine

Country Status (4)

Country Link
US (1) US4519185A (es)
EP (1) EP0068141B1 (es)
DE (2) DE3152023A1 (es)
ES (1) ES8304867A1 (es)

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DE3908806C1 (es) * 1989-03-17 1990-06-21 Beck Packautomaten Gmbh + Co, 7443 Frickenhausen, De
CN104627406A (zh) * 2013-11-14 2015-05-20 北新集团建材股份有限公司 一种塑封机及其薄膜成袋架

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US4576588A (en) * 1983-11-30 1986-03-18 Fuji Machinery Company, Ltd. Adjustable tube forming apparatus
DE3640219C1 (de) * 1986-11-25 1988-01-28 Windmoeller & Hoelscher Vorrichtung zum Bilden eines Schlauches aus einer ein- oder mehrlagigen Materialbahn
IT1208412B (it) * 1987-04-28 1989-06-12 Cavanna Spa Gruppo formatore regolabile per macchine confezionatrici di involucri del tipo flow pack e simili e relativo procedimento
US5092831A (en) * 1990-10-16 1992-03-03 Hayssen Manufacturing Co. Method of and apparatus for opening a folded web of heat-sealable packaging material prior to formation of the web into sealed reclosable packages
US5255495A (en) * 1992-10-30 1993-10-26 Hayssen Manufacturing Company Adjustable girth former
DE19618559A1 (de) * 1996-05-09 1997-11-13 Kallfass Gmbh Verpackungsmaschine
JP3713108B2 (ja) * 1996-08-14 2005-11-02 富士写真フイルム株式会社 ピロータイプ包装装置
US5743070A (en) * 1996-08-16 1998-04-28 Automated Packaging Systems, Inc. Packaging machine, material and method
IT1297239B1 (it) * 1996-09-27 1999-08-09 Siral Srl Imbustatrice automatica di foto stampe e simili
JP3940200B2 (ja) * 1997-04-09 2007-07-04 株式会社イシダ 製袋包装機
US5987860A (en) * 1998-07-07 1999-11-23 Yang; Terry Guiding plate for a wrapping device
US6457300B1 (en) * 2001-01-04 2002-10-01 Chang Min Yang Plastic film guiding device of packaging machine
US6817163B2 (en) * 2002-11-01 2004-11-16 Lantech Management Corp. Film delivery unit for shrink wrap packaging system and associated method
US7013621B2 (en) * 2003-06-18 2006-03-21 Shanklin Corporation Adjustable package geometry web forming apparatus and method
US7143569B2 (en) * 2004-10-21 2006-12-05 Lantech Management Corp. Calibrated shrink wrap packaging system and associated method
RU2493063C2 (ru) * 2008-06-19 2013-09-20 Тетра Лаваль Холдингз Энд Файнэнс С.А. Направляющая полотна
CH699875A1 (de) * 2008-11-13 2010-05-14 Ferag Ag Vorrichtung und verfahren zur bildung eines schlauchs aus einer materialbahn.
IT1394968B1 (it) * 2009-07-29 2012-08-07 Sotemapack S R L Ora So Te Ma Pack S R L Apparato e metodo per l'imballaggio di prodotti.
EP3241767B1 (de) * 2016-05-02 2019-03-27 INDAG Pouch Partners GmbH Verarbeitungsvorrichtung für folienbeutel
IT201800003391A1 (it) * 2018-03-09 2019-09-09 Smipack S P A Macchina confezionatrice automatica
DE102019006249A1 (de) * 2019-09-04 2021-03-04 Giesecke+Devrient Currency Technology Gmbh Folienführung

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DE1586334B1 (de) * 1967-10-19 1972-03-16 Nagema Veb K Faltvorrichtung zum Umformen einer ebenen Folienbahn in einen Huellschlauch
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DE1953969A1 (de) * 1969-10-27 1971-12-16 Maschb Aachen Fuerstenau Gmbh Verfahren und Vorrichtung zum Verpacken von Gegenstaenden
DE2519144A1 (de) * 1975-04-30 1976-11-11 Kallfass Karl Heinz Vorrichtung zum einhuellen von guetern in folie
US4185443A (en) * 1976-10-22 1980-01-29 Weldotron Corporation Bag sealing machine
DE2658166A1 (de) * 1976-12-22 1978-07-06 Rudolf Ing Grad Wehinger Formstueck zur bildung von folienschlaeuchen
US4285686A (en) * 1979-10-05 1981-08-25 Gloucester Engineering Co., Inc. V-Board folder for flexible plastic films

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3908806C1 (es) * 1989-03-17 1990-06-21 Beck Packautomaten Gmbh + Co, 7443 Frickenhausen, De
CN104627406A (zh) * 2013-11-14 2015-05-20 北新集团建材股份有限公司 一种塑封机及其薄膜成袋架

Also Published As

Publication number Publication date
US4519185A (en) 1985-05-28
EP0068141A3 (en) 1983-11-09
EP0068141A2 (de) 1983-01-05
DE3152023A1 (de) 1983-01-13
ES513488A0 (es) 1983-03-16
DE3265404D1 (en) 1985-09-19
ES8304867A1 (es) 1983-03-16

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