EP0677473A2 - Dispositif pour plier ou similaire de cahiers de feuilles - Google Patents

Dispositif pour plier ou similaire de cahiers de feuilles Download PDF

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Publication number
EP0677473A2
EP0677473A2 EP95104989A EP95104989A EP0677473A2 EP 0677473 A2 EP0677473 A2 EP 0677473A2 EP 95104989 A EP95104989 A EP 95104989A EP 95104989 A EP95104989 A EP 95104989A EP 0677473 A2 EP0677473 A2 EP 0677473A2
Authority
EP
European Patent Office
Prior art keywords
folding
leg
running
legs
conveying direction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95104989A
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German (de)
English (en)
Other versions
EP0677473A3 (fr
EP0677473B1 (fr
Inventor
Martin Bohn
Wolfgang Scheller
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.)
Bielomatik Leuze GmbH and Co KG
Original Assignee
Bielomatik Leuze 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.)
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Publication date
Application filed by Bielomatik Leuze GmbH and Co KG filed Critical Bielomatik Leuze GmbH and Co KG
Publication of EP0677473A2 publication Critical patent/EP0677473A2/fr
Publication of EP0677473A3 publication Critical patent/EP0677473A3/fr
Application granted granted Critical
Publication of EP0677473B1 publication Critical patent/EP0677473B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines

Definitions

  • the invention relates to a device with which sheet layers or similar blanks can be conveyed, processed and / or folded so that two or more legs or folding legs can be transferred from an approximately level starting position to a different relative position, e.g. in a transverse or plane-parallel position.
  • the two folding legs are expediently connected to one another via a folding zone formed with them and made of the same sheet material, which in the manner of a film hinge form a linear fold fold and can be determined by weakening the cross-section of the material.
  • a linear cross-sectional weakening can e.g. an embossing, a waste-free slit or perforation or the like. So that the bending stiffness of the material in the area of the folding zone is weakened compared to the adjacent areas of the folding legs or the entire folding legs.
  • the sheet layer is expediently connected in a not yet separate connection with an endless web and / or in a row successive sheet layers in an approximately horizontal or other conveying plane and thereby an edge region lying on the respective longitudinal side is brought into engagement with a tread rising from the conveying plane, so that this edge region forms a folding leg or a strip-like or tab-shaped folding part, while in part of the sheet layer remaining in the conveying plane forms the other folding leg.
  • the folding part can be folded by less or more than 90 ° or arbitrarily up to approximately 180 ° so that it then lies in register with the other folding leg, the folding zone advantageously being approximately parallel to the conveying direction, so that a progressing in the conveying direction Swiveling of the folding part while the cabinet is deformed in the pass results until the folding part is again in a single plane.
  • the folding part with its flat side pointing in the pivoting direction and / or facing away from it slid under pressure against one or more running surfaces designed as folding curves, so that there is a positive interlocking folding.
  • the folding curve is formed by a round rod which is curved in its longitudinal direction, the result is only a linear or, in cross section, only a punctiform contact of the folding leg. With numerous materials, this can lead to inaccurate folding, wear damage to the folding leg and further or similar disadvantages even if a strip-shaped folding knife engages in the inside of the folding zone.
  • the invention has for its object to provide a device in which disadvantages of known designs or the type described are avoided and which in particular ensures a very precise and low-wear guiding or folding at high running or folding speed.
  • means are provided for guiding the respective leg or folding leg, in particular the folding part, in cross-section transversely or at right angles to the conveying direction or the like at more than just a single point.
  • the folding leg can be guided at two or more contact points that are spaced apart from one another transversely to the conveying direction and / or in the conveying direction under a contact pressure that is greater than the weight pressure of the sheet layer, or instead a punctiform guide can be provided with a larger planar guide.
  • the guide can connect to the folding zone or to the freely projecting end of the folding leg, lie between these areas or extend approximately continuously from the folding zone to the end of the leg.
  • Different types of the systems mentioned can be provided in succession in the conveying direction.
  • the running, support or curve surface or the running body forming the running surface can have a cross-sectional shape that differs from the pitch circle or circular shape, although the supporting surface can also be curved flat in cross-section, for example with a radius of curvature of more than 20 mm.
  • the support surface is approximately flat in cross-section, its slope relative to the conveying plane in the conveying direction changing approximately continuously or in the manner of a finely structured polygonal curve in small steps in the same direction, for example by approximately one degree of angle per millimeter.
  • the support surface can be formed by machining and with a feed direction transverse to the conveying direction in individual steps or line zones which follow one another in the conveying direction.
  • This or another type of production also has the effect that between adjacent line zones transverse to the conveying direction, only a fraction of a millimeter protruding and continuously continuous over the width of the system, comb zones are created, against which the folding leg rests, while it lies in the area between these elevations and opposite them Elevations wider or other areas are not present or only with a significantly lower pressure, so that air cushions can form between these areas and the associated side of the folding leg. This results in extremely low sliding friction, which counteracts the tendency for the folding zone to deviate from the predetermined orientation and position, e.g. is at an angle to the conveying direction.
  • the effective support surface could indeed be moved to effect the relative movement with respect to the sheet position relative to the device base during operation, but is expediently arranged in a stationary manner with respect to the device base, so that only the sheet position in the conveying direction carries out the movement required for folding. Nevertheless, during the folding process, the supporting or folding body having the supporting surface can have a working movement that supports the folding process, e.g. perform a rotary movement. If the support surface in the area of the engagement in the folding leg is moved approximately parallel to the conveying direction or even synchronously with the folding leg, an essentially sliding friction-free engagement can be brought about.
  • At least one folding leg during or approximately after the beginning and / or the end of the folding process or in between lying area is supported on both sides of the layer in one of the ways mentioned.
  • the folding leg is expediently supported on both sides of the leg facing away from one another if at least one further fold is to be produced between its folding zone and its leg end by at least one further folding zone, possibly with moving folding curves.
  • This folding could take place when the folding leg is in the conveying plane, but the folding leg is first erected from the conveying plane by about 90 °, then the further folding is made or prefolded at a point following in the conveying direction and both or all folds are completely folded, for example in such a way that the three or more folding legs lie approximately parallel to one another.
  • the folded part When erecting and folding the folded part can only be supported on its outside. If, on the other hand, the folding leg is folded again, only the folding part lying at its outermost end is supported only on the outside of its folding, and so the subsequent folding part is also finished as an intermediate layer of the outermost folding parts. There is therefore no need for a folding knife for these folds, although at the end of the erection the folding leg can be supported with its inside by a running surface in the manner described.
  • the described further folding of the folding leg in which the inner folding part adjoining the conveying plane is directed inwards towards the center of the sheet layer and the next folding part opposite in the outward direction, can create an expandable narrow or side wall of a bag according to the invention, in particular if the folding outer side of the outer folding part is connected flatly to that of a further folding part, which on an initially adjacent section of the sheet layer in the conveying direction is provided, which in turn is struck on the multiply folded folding leg by transverse folding.
  • one or the same sheet layer in the longitudinal direction at a distance one behind the other, in cross-section identical or unequal longitudinal folds or folding parts can be produced at least partially with the same running or curved surfaces in a single pass and immediately following one another.
  • these folding parts can be erected with the same folding curve. Folded legs that are shorter in cross-section can then be passed through a further folding station without significant deformation, in which only longer folded legs are subjected to further deformation.
  • the longer and shorter folding legs can then be further folded or finished, whereby the longer folding legs are expediently guided along a continuous folding curve, while the shorter folding legs are first folded inward a little on an intermediate curve until they then only run onto an associated end section of the continuous folding curve for the longer leg and are fully folded by this.
  • the intermediate curve can lie in the conveying direction between the ends of the folding curve for the other or longer folding leg and has the effect that the shorter folding leg does not run bluntly with its end edge onto the folding curve for the longer leg.
  • the two folding curves are therefore expediently adjacent to one another transversely to the conveying direction or to the conveying plane.
  • the folding device with the surfaces mentioned, guide means for the sheet layers or the like can form an assembly which can be assembled as a whole and which can be easily or non-destructively removed or replaced to be arranged on the base frame of a folding device.
  • the folding device can be arranged together with further folding devices or can be adjusted transversely to the conveying direction and parallel to the conveying plane, so that the folding device according to the invention can be used for multiple purposes, ie can process two or more sheet layers or webs running side by side.
  • the laterally outermost folding devices each process only the laterally outermost folding parts of the laterally outer sheet layers, while the folding device between them processes the mutually facing folding parts of two adjacent sheet layers at the same time.
  • All folding devices expediently also form a preassembled module which, as a whole, including the transverse adjustment and together with a partial frame of the base frame, can easily be detached from its base part.
  • the base frame in turn, as a preassembled assembly, possibly including the respective folding device, is easily detachable or replaceable on a base frame which stands on a foundation floor.
  • the respective assembly can advantageously be inserted or removed transversely to the conveying plane, at right angles to the conveying plane and / or transversely to the conveying direction, it being possible for it to be guided in guides in the manner of a sliding carriage.
  • Further devices for processing the sheet layers on the base frame are provided in the conveying direction in front of and behind the folding device, the base frames of these devices being able to be designed or assembled in the same way as that of the folding device and the same receptacles are also provided for these base frames on the base frame, so that any exchange of the individual facilities is possible.
  • a ply web is expediently fed from a roller store and then successively to a driven transport device, Longitudinal cutting devices as well as devices for producing longitudinal and / or transverse embossings or perforations for folding zones are supplied, after which the ply web passes through the longitudinal folding devices.
  • the ply web passes through a further transport device so that it is held under a predetermined tension in all devices between the two transport devices, that is to say also in the folding device.
  • the ply web can therefore also drive guide or pressing members, such as rollers extending over the web width or, in contrast, much shorter rollers, which are provided, for example, at the exit of the folding device after the last folding curve, in order to press the folding legs lying one against the other and thereby up to the folding zone against one another to create flat.
  • the individual sheet layers in further devices can first be separated from the sheet web by cross sections, glued cross-fold and the folding parts can be fastened to one another in the manner described by means of connections, such as adhesives.
  • a pocket with two separate, separate pocket compartments to be formed from a single blank, one of which has the stretchable walls on the narrow sides, with its rear wall connected via transverse folds to a cover flap for both pocket compartments and with its front wall via a transverse fold to the connected to the outside of this front wall is the rear wall of the further pocket compartment, which is closed at the side with simple folding parts and the front wall of which can be easily and releasably secured against the rear wall in the area of the associated pocket opening and at the lateral distance between the lateral ends thereof with a plug or flap closure .
  • both pocket compartments on the inside of the cover flap are easy accessible, the pocket openings pointing in the same direction and being offset transversely to one another and furthermore the front pocket opening can be locked or locked at any time after each opening.
  • the devices 1 or folding devices arranged several times next to one another in a folding device 30 according to FIG. 2 serve to fold a sheet layer 2 according to FIG. 1, which in combination with a sheet web is conveyed in its or its longitudinal direction 3 and during the continuous passage their lateral longitudinal edges 4 is folded.
  • the sheet ply 2 is then separated from the sheet web by cross sections at its end edges 5, 6 which face away from one another and are transverse to the conveying direction 3.
  • each of the two end edges 5, 6 can run ahead or behind.
  • a plurality of transverse folds are also carried out around folding zones 7 to 12, which are at a distance from one another and at a distance from the end edges 5, 6 and divide the sheet layer 2 over its entire width into individual longitudinal sections or wall parts.
  • each of the two longitudinal edges 4 there are fold zones 13 to 16 which are parallel to the direction 3 and which are spaced one behind the other in the direction 3 and are adjacent to one another transversely to the direction 3 to form folding legs 17 to 20, the two longitudinal edges 4 being of essentially the same mirror-symmetrical design.
  • the folding legs 17 to 20 protrude laterally beyond the associated side edge 4 by their leg height, the folding zones 13, 15, 16 approximately with the longitudinal edge 4 collapse, while the folding zone 14 is offset laterally outwards.
  • the folding legs 17, 19, 20 are folded over the longitudinal edge 4 upwards and inwards onto the top of the remaining sheet layer 2, while the folding legs 18 adjoining the outer end of the folding leg 17 via the folding zone 14 in the opposite direction, namely to the outside of the Folding leg 17 and the associated longitudinal edge 4 is folded indicative, so that it then lies with its inner thigh on the outer leg of the folding leg 17.
  • the wall parts 22 to 26, 28, 29 lying between the end edges 5, 6 each form the folding leg which remains in the conveying plane 21 during the folding process and against which the remaining folding legs 17 to 20 are pivoted.
  • the folding leg carrying the folding legs 17, 18 forms the rear wall 23 and the folding leg carrying the folding legs 19 forms the front wall 25 of a folding pocket which is only accessible over a width of the sheet layer 2 only on one transverse side, the side walls of which are folded by the folding legs 17 to 19 which are approximately congruently connected to one another is formed.
  • the leg inside of the folding leg 17 adjoining the leg outside of the folding leg 18 is connected to the leg outside of the folding leg 19 by gluing, so that the strip-shaped side wall 17 to 19 are changed in the manner of a bellows in their width and thereby adapt to the size of the bag contents can adjust reversibly.
  • the rear wall 23 and the front wall 25 located in front of the inside thereof are connected to one another by a strip-shaped bottom 28 lying between the associated folding zones 9, 10, the bottom of which is connected in one piece, the width of which can correspond approximately to the greatest width of the side wall 17 to 19, whereby approximately a further folding zone can be provided in the middle between the folding zones 9, 10, so that the base 28 can also be folded flat at least in two layers and reversibly widened in the manner described.
  • a cover flap 24 adjoins the folding zones 7, 8 or a cover wall 29 lying between them, which flap 24 closes the pocket opening the pocket 23, 25, 28 can be folded over the pocket opening to the outside of the front wall 25.
  • the pocket opening then lies opposite the top wall 29 which, like the bottom wall 28, is designed to be reversibly widenable and dimensioned.
  • the rear wall 22 of an additional front pocket adjoins the folding zone 11 and, like the outside of the rear wall 22, bears against the outside of the front wall 25.
  • the front wall 26 of the front pocket adjoins the end of the rear wall 22 facing away from the folding zone 11 via the folding zone 12.
  • the rear wall 22 is provided with the folding legs 20, on the outside of the legs of which the front wall 26 is fastened with its laterally outer edge zones by gluing or the like.
  • the front wall 26 is a smaller height than the rear wall 22 and the rear wall 22 is a smaller height than the front wall 25 has.
  • a tongue-and-groove locking latch flap 27 protruding against the folding zone 12 is punched out, under which the edge area of the front wall 26 abutting the end edge 6 can be pushed, so that the goods in the front pocket 22, 26 are prevented from falling out.
  • the folding legs 17, 18 and 19 connect without attachment essentially directly to the associated bottom wall 28 and lie at a distance from the folding zones 8, 11 remote therefrom.
  • the folding legs 20 essentially close directly to the bottom wall of the front pocket formed by the folding zone 12 22, 26 and, like the folding legs 19 provided on the front wall 25, are at a distance from the folding zone 11 separating the two pocket openings, with respect to which the locking tongue 27 is offset from the folding zone 12.
  • the cover flap 24 and the cover wall 29 also cover the front pocket or its pocket opening.
  • the folding zones 7 to 10, 12, 13, 15, 16, all of which are used for folding on the same side of the remaining sheet layer, are expediently formed by embossing grooves, while the folding zones 11, 14 provided for folding in the opposite direction are expediently formed by slot perforations in each case spaced short separating cuts which are located one behind the other and are formed at a distance.
  • the leg length of the folding leg 17 is expediently slightly longer than that of the folding leg 19, 20, while the leg length of the folding leg 18 is slightly shorter than that of the folding leg 17, 19, 20.
  • the folding legs 17, 18, 23 form a so-called Z-fold.
  • the front wall 25 can be slightly lower than the rear wall 23.
  • the device 30 has a rigid frame 31 with two plate-shaped side walls 32 which are approximately perpendicular to the conveying plane and are on both sides laterally outside the working width and which are rigidly connected to one another via rod-shaped cross members and a frame-shaped connecting unit 33.
  • the rectangular connection unit 33 forms the lowermost floor of the frame 31 and therefore the supporting base for the folding device 30.
  • the frame 31 is divided into two individual frames, namely a base frame 34 having the connection unit 33 and a partial frame 35 which is connected to that of the connection unit 33 opposite side of the base frame 34 connects, how the base frame 34 is inherently rigid by cross members and how the base frame 34 forms parts of the side walls 32. This allows the two individual frames 34, 35 are connected to one another essentially exclusively via the side cheeks 32.
  • the two actuating drives 38 each have, on opposite sides of the slide guide 37, an adjusting spindle which is parallel to the adjusting direction and which engages in a corresponding spindle nut on the associated folding device 1, so that it can be adjusted as an entire assembly with all associated functional parts.
  • the adjusting spindles pass through the front side cheek 32 of the partial frame 35 and each carry a handle on the front of the frame 31, so that they can be actuated in an easily accessible manner.
  • the individual frames 34, 35 are braced against one another with fastening bolts 39 or the like, which hold the associated cheek parts or their cheek edges supported against one another enforce and are accessible at all times from the top of the frame 31.
  • the folding device 30 is arranged in an easily detachable manner on a base frame 40 which has two plate-shaped side cheeks 41 which are approximately in the planes of the side cheeks 32 and which are connected to one another in a rigid manner by means of cross members.
  • a base frame 40 which has two plate-shaped side cheeks 41 which are approximately in the planes of the side cheeks 32 and which are connected to one another in a rigid manner by means of cross members.
  • rod-shaped supports 42 are supported with their ends, which likewise form crossbeams and lie transversely to the direction 3.
  • the supports 42 can be changed in position parallel to the direction 3 with respect to the base frame 40 and, with their upper sides above the upper plate edges of the side cheeks 41, form supporting and running surfaces for the folding device 30 which are parallel to the conveying plane 21.
  • the latter has in the region of its outer sides lying transversely to the direction 3 Rollers or the like.
  • rollers lie in recesses on the running surfaces of the supports 42, so that the underside of the connection unit 33 with supporting surfaces then lies directly on the supporting surfaces.
  • the subframe 35 can then be lifted up with the folding devices 1 and the actuators 38 from the base frame 34 remaining on the base frame 40 and / or pulled off parallel to the direction 3, after which the base frame 34 as a whole either upwards or in one of the aforementioned Running directions can be removed.
  • the folding device 30 or the frame 31, 34 can be lifted to the height level with a pallet truck or the like the carrier 42 are brought, the carrier and running rails of the lifting truck then forming extensions of the carrying and running rails 42.
  • the folding device 30 can then be pushed back and forth as desired on these carrier rails which have been extended in this way, the carrier rails of the lifting device expediently detachably engaging in positioning members of the base frame 40 for precise alignment.
  • the respective folding device 1 has three folding stations 43, 44, 45 in the direction 3 in direct succession for each folding leg 17 to 20 of a longitudinal edge 4.
  • the folding leg is set up by approximately 90 ° relative to the conveying plane 21
  • the folding leg 18 is pre-folded at an obtuse angle relative to the folding leg 17, while the folding legs 17, 19, 20 are folded slightly inward beyond 90 ° and
  • the folding legs 17, 19, 20 are completely folded onto the upper or inner sides of the associated folding legs 23, 25, 22, while the folding leg 18 is folded onto the outside of the folding leg 17.
  • the folding stations have running surfaces 46 to 56 for securing the position and mutual pivoting of the folding legs during the passage.
  • the treads 46, 47 which are further apart and parallel to one another at the gap distance, but with respect to the thickness of the sheet layer 2, serve to guide the parts 22 to 29 of the sheet layer 2 lying in the conveying plane 21 in the respective folding station, so that this part of the sheet layer 2 is always positively secured against transverse movements on both sides of the layer.
  • the treads 48, 49 which are opposite each other corresponding to the treads 46, 47, but are approximately at right angles to the treads 46, 47 are used to guide the folding legs 17 to 20 in a corresponding manner on both sides after installation, wherein these treads are provided only at the exit of the folding station 43 or at the adjoining entrance of the folding station 44, but not in the working area of the folding station 44.
  • the running surfaces 50 to 53 form a similar but less angled working gap of the folding station 44, in which the folding legs 17, 18 are inclined relative to one another.
  • the running surface 54 forms a folding curve for the finished folding of the folding legs 17, 18, whereas the folding curve 55 of the folding station 45, which is closer to the conveying plane 21, forms a folding curve for carrying out a first partial phase of the finished folding of the folding legs 19, 20, which after leaving this folding curve 55 Skip to the subsequent end section of the folding curve 54 and be completely folded by it.
  • the folding body 68 forming the folding curve 55 protrudes only so far that it does not prevent the folding leg 17, 18, which has already been folded in part or already finished, from passing by, but rather engages essentially without contact in the protruding angle between the folding legs 17, 18.
  • the essentially fully folded folding legs 17 to 20 pass successively into a pressing station 57, in which they pass between pressing bodies in such a way that the folds 13 to 16 are kinked or essentially not springing back.
  • the press station 57 forms the exit of the folding device 1.
  • a running surface 56 designed as a folding curve is provided, which in direction 3 in small constant steps from its position in the conveying plane 21 to the position approximately perpendicular to the conveying plane 21 at the exit the folding station 43 rises.
  • the folding curve 56 is provided on a folding body 58 which forms the folding curve 56 with a set outer flank forming its upper side and a side surface.
  • the two outer folding devices on the side 1 each have only one folding curve, while the folding device 1 lying between them has two folding curves 56 which adjoin one another in a line and at the outlet end and which can be formed by a common folding body 58 or two separate and mutually arranged, mirror-symmetrical folding bodies 58.
  • the same folding bodies 58 as in the middle folding device 1 can be used in the side folding devices.
  • the folding curve 56 is formed by partial surfaces 59, which are contiguous in the direction 3 and are linear at right angles to the conveying plane 21, each having a maximum of 3 or 5 mm width, the gradient difference between adjacent partial surfaces 59 being at most 3 or 5 degrees of angle, so that over a distance of approximately 90 mm the slope of the folding curve 56 is reached over 90 °.
  • the associated ends of all essentially flat partial surfaces 59 extend approximately into the conveying plane 21, while the ends remote therefrom lie in a comb-like apex 61 of the folding body 58 and this apex 61 progressively rises concavely in the initial section of the folding curve 56.
  • the two folding curves 56 facing away from one another can form a common apex 61 according to FIG. 5.
  • the width of the folding curve 56 is greater than the leg length of the folding legs 17 to 20, so that they are securely guided over their entire leg length when they are erected.
  • a linear elevation 60 is formed which is transverse to the conveying plane 21 and perpendicular to the direction 3 and which forms the actual sliding surface for the folding legs 17 to 20.
  • the folding body 58 like the other functional parts of the folding device 1, is fastened to a device base 62 or stored, which is rigidly attached to the frame 31 via the guide 37, so that each folding device 1 can be easily detached and replaced independently of the others.
  • the folding body 58 extends into the area of the folding station 44 and forms the running surface 49 for the inside of the leg of the folding legs 17 to 20 up to its working area, movable parts of the folding station 44 also being mounted on the folding body 58 and a pre-assembled assembly with the folding body 58 can form.
  • the folding curves 50 to 53 of the folding station 44 are formed by peripheral surfaces of runners 63, 64 which can be rotated, for example, as disc-shaped rollers about mutually parallel, rigid axes parallel to one another, perpendicular to the conveying plane 21 and offset transversely to the direction 3.
  • Each runner 63, 64 has two folding surfaces 50, 51 and 52, 53 lying at an obtuse angle of more than 120 ° or approximately 150 ° to one another in the form of truncated cone surfaces, each of which extends up to the associated end face of the roller 63, 64.
  • the folding surfaces 50, 51 rise in the shape of a truncated cone against one another, so that they connect or merge into one another in a radially projecting, edge-shaped ring zone.
  • the folding surfaces 52, 53 complementary to the folding surfaces 50, 51 rise radially outward from one another, so that they are in a V-shaped relationship to one another and form a sharp-edged ring recess in the V-tip.
  • the two axes of rotation of the runners 63, 64 lie in an axial plane perpendicular to the direction 3, the folding surfaces 50, 51 and 52, 53 intermeshing with a gap distance which is only slightly greater than the material thickness of the sheet ply 2 or the folding legs 17, 18 is.
  • the runner 63 can be in its largest diameter lying at the projecting ring edge about a quarter smaller than the largest diameter at the end faces of the runner 64, so that on the one hand the runner 63 located further away from the longitudinal center plane of the sheet layer 2 is accommodated in a space-saving manner and, on the other hand, the smaller radius of curvature results in a stronger buckling effect in the working gap between the freely rotatable runners 63, 64 which are only rotated by the frictional engagement with the folding legs 17, 18.
  • these folding stations 44 are slightly offset from one another in the direction 3, so that the two runners 63 closer to the longitudinal median plane between the folding curves 56, seen in the direction 3, can overlap one another.
  • the running surfaces 50 to 53 of the two runners 63, 64 form a degressively narrowing inlet funnel 66 on the inlet side and a progressively expanded outlet funnel 67 for the folding legs 17 to 20 on the outlet side.
  • Corresponding to the plane of the folding legs approximating or Inlet and outlet surfaces which are at a distance from this level are also conceivable on fixed treads and serve for a gentle inlet and outlet before or after the respective folding.
  • the folding leg 18 can protrude beyond the folding surfaces 51, 53.
  • the rotor 63 can be mounted on the folding body 58.
  • the rotor 64 is mounted on a bearing body which can be mounted independently thereof or on the base 62.
  • the folding surfaces 50 to 53 and the runners 63, 64 are essentially continuously adjustable transversely to the conveying plane 21, for example by the fact that interchangeable spacers, such as insert rings lying in their axes of rotation, are provided on their end faces, so that the folding surfaces 50 to 53 to the respective Location of the folding zone 14 can be adjusted.
  • the closer to the conveying plane 21 and to this inclined folding surfaces 50, 52 also serve to guide the folding legs 19, 20, the leg length of which is such that they do not extend further into the region of the conveying plane 21 and also obliquely to the latter provided folding surfaces 51, 53 arrive and are therefore not caught by the folding annular bead engaging in the ring recess.
  • the distance between the outlet of the folding curve 56 and the working area of the folding station 44 can be selected such that the respective folding leg 17 to 20 has already completely left the folding curve 56 before it comes into operational engagement with the folding station 44 or that it starts at the beginning of this intervention with its trailing section is still in engagement with the folding curve 56.
  • the running surface 54 of the folding station 45 is designed as a wedge surface that slopes obliquely in the direction 3, which can be designed approximately parallel to the conveying plane 21 over its entire length and falls approximately to this conveying plane 21.
  • the folding curve 54 can, however, also be inclined in the initial area at an angle which corresponds to the inclined position of the folding leg 18 due to the pre-folding in the work station 44, the folding curve 54 then expediently transitioning into the said parallel position by setting around an axis which is in a is at right angles to the conveying plane 21 and parallel to the direction 3, and falls in accordance with the acute-angled wedge slope to the conveying plane 21.
  • the folding curve 56 is set around a corresponding axis, but lying approximately in the conveying plane 21 and in the running area of the folding zones 13, 15, 16, so that adjacent partial surfaces 59 to their ends away from the conveying plane 21 increasingly larger arc distances around the cabinet axis and therefore the elevations 60 to these ends increase in height.
  • the partial surfaces 59 and elevations 60 are aligned in a straight line in the direction 3 with respect to one another, so that they continuously adjoin one another free of steps or elevations.
  • the folding curve 54 can also transition from a position approximately perpendicular to the plane 21 by slanting in the direction 3 into a position parallel and immediately adjacent to the plane 21, and can have a structure as described with the aid of the folding curve 54. For most of the rising section of the folding curve 56 and the folding curve 54 there is no running surface directly opposite. This also applies to the folding curve 55.
  • the folding curve 54 pointing towards the conveying plane 21 is opposite to the folding body 68 with a significantly greater distance than the said gap distances, which projects in cross section transversely to the direction 3 in the manner of a freely protruding arm in the direction of the longitudinal central plane of the associated sheet layer 2 and is light with its fastening end can be detachably and exchangeably attached to the folding body forming the folding curve 54 or to the base 62.
  • the folding curve 55 which drops in a similar way to the folding curve 54 and points towards the conveying plane 21, lies at a distance behind the rear end with its rear end and at a greater distance from the front end of the folding curve 54 with its front end.
  • the folding station 57 has two rotors 69, 71 which are directly in mutual drive engagement via a friction gear 70 and which can be rotated about axes parallel to the conveying plane 21 and perpendicular to the direction 3, which lie in an axial plane approximately parallel to the direction 3.
  • the peripheral surfaces of the runners 69, 71 form pressing surfaces 73, 72 which press the continuous and folded folding legs 17 to 20, 23, 25, 22 against one another in the conveying plane 21.
  • the runner 69 which runs on the side of the folding legs 23, 25, 22 facing away from the folding legs 17 to 20, can be mounted on the base 62 with a fixed axis and can be formed by a guide roller which is continuous over the working width of the folding device 1 or 30, which is driven directly by the supported sheet 2.
  • the rotor 71 running on the folding legs 18 to 20 is also driven, but a reduction ratio is selected such that the peripheral speeds of the pressing surfaces 72, 73 differ slightly are.
  • the peripheral speed of the press surface 72 may be slightly greater than that of the press surface 73 in order to avoid an inclined position of the folding zones 13 to 16 with respect to the predetermined orientation.
  • the pressing surfaces 72, 73 run in the same direction with the layer web.
  • the pressing surfaces 73, of the runner 69 can also be formed directly according to FIG. 6 by the peripheral surfaces of the outer rings of ball bearings and, like the pressing surfaces 72, appropriately project axially beyond both leg ends of the folded folding legs 17 to 20 or beyond the folding zones 13 to 16.
  • Each of the runners 71 is mounted on a separate support arm 74 which projects freely in the direction 3 and which is mounted on the base 62 at a distance behind the runner 71 about an axis approximately parallel to its axis and is pivotable independently of all adjacent runners 71.
  • a spring 75 acting on the arm 74 the runner 71 is pressed with its pressing surface 72 against the pressing surface 73, the spring force of the spring 75 being able to be manually changed continuously with an adjustment 76.
  • the pressing surface 72 of the runner 71 is expediently formed by a pressure-elastic, flexible covering, which is deformed by the pressing on the folding legs 18 to 20 in a relatively large area.
  • a separate pair of runners 69, 71 is provided for all folding legs 17 to 20 located on the respective longitudinal edge 4.
  • the method according to the invention results in a very precise machining of the sheet layers 2 at a very high machining speed.
  • the leg length of the folding legs can be as small as desired, in particular less than 20, 10 or even 5 mm.
  • by appropriate recess of the running surfaces of the folding legs can also be folded if it is already provided with a layer of glue.
  • continuous continuous folding legs or, as described, intermittent successive folding legs with any running speed up to at least 300 m / min. are each folded over a very short folding distance.
  • Different folding devices 1 for different folds can be arranged on the frame 31.
EP95104989A 1994-04-15 1995-04-04 Dispositif pour plier ou similaire de cahiers de feuilles Expired - Lifetime EP0677473B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4413008 1994-04-15
DE4413008A DE4413008A1 (de) 1994-04-15 1994-04-15 Faltvorrichtung für Blattlagen

Publications (3)

Publication Number Publication Date
EP0677473A2 true EP0677473A2 (fr) 1995-10-18
EP0677473A3 EP0677473A3 (fr) 1996-09-04
EP0677473B1 EP0677473B1 (fr) 1999-01-20

Family

ID=6515473

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95104989A Expired - Lifetime EP0677473B1 (fr) 1994-04-15 1995-04-04 Dispositif pour plier ou similaire de cahiers de feuilles

Country Status (3)

Country Link
US (1) US5820540A (fr)
EP (1) EP0677473B1 (fr)
DE (2) DE4413008A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19632177A1 (de) * 1996-08-09 1998-02-12 Bielomatik Leuze & Co Faltvorrichtung für Lagenmaterial, insbesondere Papier
DE19632178A1 (de) * 1996-08-09 1998-02-12 Bielomatik Leuze & Co Vorrichtung zur Bearbeitung von Lagen-Material o. dgl.
EP0838330A3 (fr) * 1996-10-23 1999-02-24 BIELOMATIK LEUZE GmbH + Co. Méthode et dispositif de fabrication de pli, comme un pli postal ainsi que ce pli
DE19652162A1 (de) * 1996-10-23 1998-04-30 Bielomatik Leuze & Co Verfahren und Vorrichtung zur Herstellung eines kuvertierten Versandstückes sowie Versandstück
US5937757A (en) * 1998-01-07 1999-08-17 Goss Graphic Systems, Inc. Gap adjusting device with pressure relief for a second fold roller
DE19847893A1 (de) * 1998-10-16 2000-04-20 Focke & Co Verfahren und Vorrichtung zur Vorbereitung von Verpackungsmaterial für die Fertigung von (Zigaretten-)Packungen
GB0327296D0 (en) * 2003-11-24 2003-12-24 Ds Smith Uk Ltd Apparatus for forming a carton
EP1886765A1 (fr) * 2007-08-01 2008-02-13 Kama GmbH Procédé de support d'outil et dispositif de traitement de sections plates
WO2009126331A1 (fr) * 2008-04-09 2009-10-15 Endocore Llc Dispositifs à valve pylorique et procédés

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4016808A (en) * 1975-08-11 1977-04-12 Young Louis H Method and apparatus for making expansible gusset envelopes
US4175478A (en) * 1978-03-13 1979-11-27 American Fiber Velope Manufacturing Co. Expansible gusset envelope and method and apparatus for fabricating same
US4557715A (en) * 1983-12-01 1985-12-10 Kempsmith Machine Company Tuck assembly for a pocket file folder line
GB2219244A (en) * 1988-06-04 1989-12-06 Newlong Machine Works Manufacture of a multi-layer bag
DE3916254A1 (de) * 1989-05-18 1990-11-22 Guk Falzmaschinen Griesser & K Beistell-falzeinrichtung
DE3935056A1 (de) * 1989-10-20 1991-06-13 Stahl Gmbh & Co Maschf Verfahren zur kontrolle des bogendurchlaufs in einer falzmaschine

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US842823A (en) * 1906-08-10 1907-01-29 Carter Rice & Company Inc Stay-strip.
US2009857A (en) * 1932-09-30 1935-07-30 Potdevin Machine Co Machine for making envelopes and the like
US3288037A (en) * 1964-01-16 1966-11-29 Berkley Machine Co Side flap folding section of a rotary envelope making machine
US3917255A (en) * 1971-12-01 1975-11-04 Procter & Gamble Apparatus for folding of a web
US3913464A (en) * 1974-11-22 1975-10-21 S & S Corrugated Paper Mach Positioning means for hold-down
US4008650A (en) * 1975-06-11 1977-02-22 Alter Seymour B Method and apparatus for forming expansible envelope
FR2317092A1 (fr) * 1975-07-11 1977-02-04 Shinko Kikai Seisakusho Procede et appareil pour le pliage de feuilles de carton
US4290763A (en) * 1979-06-15 1981-09-22 Hurst Gerald L Method for producing enclosed multipaneled envelopes
FR2479099B1 (fr) * 1980-03-31 1986-09-12 Chazelas Marie Procede de realisation d'une liasse apte a la formation d'au moins un classeur a soufflet, et machine pour la mise en oeuvre d'un tel procede
US4338085A (en) * 1980-04-03 1982-07-06 Champion International Corporation Apparatus for manufacturing envelopes
DE3216505A1 (de) * 1982-05-03 1983-11-03 Windmöller & Hölscher, 4540 Lengerich Vorrichtung zum z-foermigen falten von papiersaecken
US4540390A (en) * 1983-07-25 1985-09-10 Acebee Manufacturing Co. Method and apparatus for forming notches for gussets for expandable envelopes
US4792325A (en) * 1986-09-29 1988-12-20 Schmidtke Joachim G Method and apparatus for manufacturing cardboard pallets
US5037368A (en) * 1989-08-31 1991-08-06 Harris Graphics Corporation Folder apparatus
US5112291A (en) * 1990-01-08 1992-05-12 Vermehren H Richard Overbending device
US5094658A (en) * 1991-03-05 1992-03-10 F.L. Smithe Machine Company, Inc. Vacuum side-folder section for envelope blank folding apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4016808A (en) * 1975-08-11 1977-04-12 Young Louis H Method and apparatus for making expansible gusset envelopes
US4175478A (en) * 1978-03-13 1979-11-27 American Fiber Velope Manufacturing Co. Expansible gusset envelope and method and apparatus for fabricating same
US4557715A (en) * 1983-12-01 1985-12-10 Kempsmith Machine Company Tuck assembly for a pocket file folder line
GB2219244A (en) * 1988-06-04 1989-12-06 Newlong Machine Works Manufacture of a multi-layer bag
DE3916254A1 (de) * 1989-05-18 1990-11-22 Guk Falzmaschinen Griesser & K Beistell-falzeinrichtung
DE3935056A1 (de) * 1989-10-20 1991-06-13 Stahl Gmbh & Co Maschf Verfahren zur kontrolle des bogendurchlaufs in einer falzmaschine

Also Published As

Publication number Publication date
US5820540A (en) 1998-10-13
EP0677473A3 (fr) 1996-09-04
DE59504857D1 (de) 1999-03-04
DE4413008A1 (de) 1995-10-19
EP0677473B1 (fr) 1999-01-20

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