EP3621794A1 - Dispositif de fabrication d'un produit d'emballage tridimensionnel, tel qu'un produit rembourré, à partir d'une bande de papier monocouche ou multicouche - Google Patents

Dispositif de fabrication d'un produit d'emballage tridimensionnel, tel qu'un produit rembourré, à partir d'une bande de papier monocouche ou multicouche

Info

Publication number
EP3621794A1
EP3621794A1 EP18723806.8A EP18723806A EP3621794A1 EP 3621794 A1 EP3621794 A1 EP 3621794A1 EP 18723806 A EP18723806 A EP 18723806A EP 3621794 A1 EP3621794 A1 EP 3621794A1
Authority
EP
European Patent Office
Prior art keywords
profile
shaft
radial
cutting
paper web
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
EP18723806.8A
Other languages
German (de)
English (en)
Other versions
EP3621794B1 (fr
Inventor
Bastian Schalk
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.)
Sprick Bielefelder Papier und Wellpappenwerke and Co GmbH
Original Assignee
Sprick Bielefelder Papier und Wellpappenwerke and Co GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sprick Bielefelder Papier und Wellpappenwerke and Co GmbH filed Critical Sprick Bielefelder Papier und Wellpappenwerke and Co GmbH
Publication of EP3621794A1 publication Critical patent/EP3621794A1/fr
Application granted granted Critical
Publication of EP3621794B1 publication Critical patent/EP3621794B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D5/00—Multiple-step processes for making three-dimensional [3D] articles
    • B31D5/0039—Multiple-step processes for making three-dimensional [3D] articles for making dunnage or cushion pads
    • B31D5/006—Multiple-step processes for making three-dimensional [3D] articles for making dunnage or cushion pads including controlled deformation of flat material, e.g. pleating, corrugating or embossing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D5/00—Multiple-step processes for making three-dimensional [3D] articles
    • B31D5/0039—Multiple-step processes for making three-dimensional [3D] articles for making dunnage or cushion pads
    • B31D5/0043—Multiple-step processes for making three-dimensional [3D] articles for making dunnage or cushion pads including crumpling flat material
    • B31D5/0047—Multiple-step processes for making three-dimensional [3D] articles for making dunnage or cushion pads including crumpling flat material involving toothed wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/44—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cup or like cutting member
    • B26D1/445—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cup or like cutting member for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
    • B26F1/06—Perforating by punching, e.g. with relatively-reciprocating punch and bed with punching tools moving with the work
    • B26F1/10—Roller type punches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/04—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
    • B65H35/08—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with revolving, e.g. cylinder, cutters or perforators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D2205/00—Multiple-step processes for making three-dimensional articles
    • B31D2205/0005—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads
    • B31D2205/0011—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads including particular additional operations
    • B31D2205/0058—Cutting; Individualising the final products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/63—Dunnage conversion

Definitions

  • the invention relates to a device for manufacturing a three-dimensional packaging product, such as a padding product, from a single or multi-ply paper web.
  • a papermop product manufacturing apparatus comprises a preform station in which the paper web provided as a fanfold stack source transforms into a three-dimensional packaging product having at least one crushable cavity extending in the web direction.
  • the generic, but also inventive manufacturing device has a subsequent to the preforming station in the conveying direction of the paper web rotary cutter which cuts a preformed paper web section to the desired length of the packaging product of the preformed paper web.
  • the rotary cutter has a cutting shaft, on which a cutting edge, which rotates in a circular orbit, is attached.
  • the rotary cutter may optionally comprise a countershaft, to which a cutting pad is attached, which rotates continuously, in particular synchronized with the cutting blade or the cutting edge, so that the cutting edge can engage in the cutting pad during the cutting operation.
  • the rotary cutter includes a cutting blade holder which is fixed to a cutting shaft.
  • the cutter receptacle opposite the cutting receptacle also comprises a countershaft to which a cutting pad is attached via a holding carrier.
  • Both on the cutting blade shaft and on the counter shaft five working disks are provided, which are arranged offset in the direction perpendicular to the conveying direction F transverse direction or the axial direction of the respective shaft, so that the working disks of the counter shaft lie between the working wheels of the cutting blade shaft.
  • the working wheels of the cutting blade shaft have adjacent the cutting edge a perforation nose pair which serves to set in the conveying direction in front of and behind the cutting edge paper of the preformed paper web section perforations to fix the edge region of the preformed paper section against unfolding.
  • the working disks comprise, starting from the one perforation nose, a rectilinear disk edge, starting from the other perforation nose, a curved disk edge.
  • the respective disc edges define the passageway and, depending on the rotational position, they provide a wide passageway whose passage cross-section steadily decreases in the course of the screwing-in of the curved disc rim.
  • the respective working disk comprises a radial extremum or a radial projection or a radial recess, which serves as a carrier for further transporting a separated paper web section, essentially at the circumferential position diametrically opposite the cutting blade or the circumferential position diametrically opposite the cutting pad.
  • the working wheels have proven themselves, especially when the mass in view of the necessary for the operation of the guide preformed paper web section toward the rotary cutter and past by means of the working discs can be kept low. It was found, however, that the intermeshing working disks, especially at the time of rotation of the entrainment by the radial high points, caused a pinching of the paper web material, which reduced the damping capability of the preformed paper web section.
  • a device for manufacturing a three-dimensional packaging product such as a cushioning product, is provided from a single or multi-ply paper web.
  • the manufacturing apparatus includes a preform station that converts the paper web into a three-dimensional packaging product having at least one crushable cavity extending in the web direction.
  • the preforming station preferably comprises a funnel-type wrapping or unrolling device which laterally strikes or curls the paper web in its transverse direction as it is conveyed into the production device, so that the longitudinal edges of the paper web, which are provided for example by means of a Leporellostapelario, are stacked substantially in the middle of the paper web are.
  • the wrapping or rolling device includes a deformation station with two support rollers, which engage in a deformation area in each other to deform the embossed or rolled paper web to the cushioning product.
  • This specific cushioning product comprises a substantially central longitudinally extending deformation region, followed by two cavity crumple zones in the transverse direction, whose lateral end also forms the end of the cushioning product.
  • a preferred embodiment of the manufacturing device according to the invention requires a paper dumbbell product that is substantially dumbbell-shaped in cross-section.
  • a rotary cutter adjoins the preforming station in the direction of conveyance of the paper web, which rotates the preformed paper web section to the desired length of the paper web Cut the packaging product from the preformed paper web.
  • the rotary cutter has a cutting shaft or knife shaft to which a cutting edge or a knife of the rotary cutter is attached.
  • the rotary cutter is preferably provided with a countershaft which is arranged in particular parallel to the cutting blade shaft and in the conveying direction at the same height.
  • a cutting pad is fixed, in which engages the cutting during the sectioning process.
  • the cutting edge follows a circular orbit arranged to intersect a path of the preformed paper web section through the rotary cutter to accomplish the cutting operation.
  • the cutting pad can follow a circular orbit and is arranged with respect to the orbit of the cutting blade such that an intersecting orbit for the necessary engagement of the cutting blade is made possible in the cutting pad.
  • an attachment for increasing the planar radial extent of the shaft is attached to the cutting shaft and / or on the countershaft to form a full-surface profile channel wall section whose full-surface profile profile extends in the axial direction of the shaft over at least half the width of the preformed paper web section.
  • the full-surface profile channel section formed in this way achieves full-surface contact with the preformed paper web section before and after being cut by the rotary cutter, thereby achieving uniform gripping of the paper web section, guidance of the paper web section and entrainment and further transport of the paper web section.
  • the increased frictional surface area due to the enlargement of the areal contact area it has been shown that hacking engagement of the preformed paper web section is prevented, so that paper jams are avoided and less conveying force is required to ensure the conveying flow of the paper web section through the rotary cutter.
  • the measure according to the invention forms a profile channel wall section which rotates with the shaft and which is essentially passive at the time of rotation or in the rotational position of the engagement of the cutting blade in the preformed paper web section but when leaving the cutting blade of the rotary cutter from the conveying path of the paper web section in full-surface engagement the Textilbahnabites passes and on the one hand entrains, in particular when a cutting pad or the cutting blade opposite high profile engages and on the other hand after the cutting process, in particular at a further rotation by 90 0 , a substantially flat channel is provided for the paper web section, for the next Section process the rotary cutter occupied.
  • the attachment or the entire attachment body is fastened in particular exclusively to the countershaft.
  • the full-surface attachment body which receives the shaft substantially integrally, extends over the entire width of the preformed paper web section and in particular beyond, in order to ensure a full-surface contact between the article and the preformed paper web section.
  • the full-surface outer profile of the essay extends over at least half the width of the preformed paper web section as well as in the circumferential direction from one side of a holder of the cutting edge and / or the cutting pad of the rotary cutter to the opposite side, so that the essay the shaft in a Umgreifsamplitude of about 270 0 surrounds.
  • the size of the unaffected area depends on the circumferential width of the holder of the cutting edge and / or the cutting pad.
  • the attachment or the attachment body is in contrast to the axially spaced working discs in the axial direction and in the circumferential direction over the entire surface and in particular comprises a continuous, continuous, jump-free surface course both in the axial direction and in the circumferential direction.
  • the rotary cutter has at least one leveling compound, which can be housed in particular in the article.
  • the cutting shaft and / or the countershaft is equipped with a balancing mass such that the cutting shaft and / or the countershaft, in particular the rotary cutter, rotates without imbalance.
  • the cutting shaft and / or the countershaft can or can be configured radially mass-symmetrical with the respective components arranged thereon, including a respective balancing mass.
  • a balancing mass can be provided opposite the cutting edge (or the cushion) and / or in the attachment.
  • the attachment body has a longitudinal slot, which in particular extends completely from a transversally located transverse side to the opposite transverse side in the axial direction, wherein the longitudinal slot is invariable in cross section in the course of the axial direction.
  • the shaft depending on whether the attachment is placed on the cutting shaft and / or on the counter shaft, used in the radial direction on the essay.
  • the longitudinal slot comprises an axially extending plant floor, against which the shaft rests in the inserted state.
  • the contact bottom of the longitudinal slot is preferably and partially shaped in a form complementary to the cylindrical shaft, so that the complementary shape bearing surface can fit positively against the shaft.
  • the shaft does not necessarily have to be cylindrical, and in sections may also have springs which can engage in grooves of the contact surface or vice versa.
  • the contact floor determines the position of the shaft at least in the axial direction.
  • the contact base of the longitudinal slot comprises one or more recesses in order to simplify the connection of the shaft to the attachment body on the inside.
  • for attaching the attachment to the shaft and preferably glued to a shaft mounted on the holder for the cutting edge and / or the cutting pad.
  • the above-mentioned multiple recesses may serve to receive a composite material such as an adhesive.
  • the attachment body comprises two gripping arms which delimit the longitudinal slot in the circumferential direction and which, in the inserted state of the shaft, extend away from the latter in the radial direction, the clear access cross section of the longitudinal slot remaining substantially unchanged by the gripping arms.
  • the gripping arms serve, starting from the plant floor, the shaft and in the course of the investment floor and the holder for the cutting and / or for the cutting pad to form a positive fit firmly. Particularly good results are achieved when a plastic is used for the essay and adhesive is used.
  • the radial extent of the gripper is less than the radial extent of the cutting pad and / or the cutting edge of the rotary cutter.
  • the attachment has a full-surface, in particular in the axial direction and circumferential direction continuously curved pad product outer profile, which is three-dimensionally curved and in particular in the course in the axial direction and circumferential direction has no profile jumps.
  • the cushion outer product profile is arranged in particular in the rotational circumferential direction of the shaft with respect to the holder fastened to the shaft for the cutting edge and / or for the cutting pad of the rotary cutter upwards.
  • the upholstery product outer profile comprises at least one profile indentation, preferably two profile indentations, in the case of a dumbbell-shaped upholstery product having two outboard crush cavities forming a cushion dome and a central deformation strip at the axial position of the at least one crush cavity of the packaging product Cambered cavity formed padding is conformed.
  • the adaptation of the profile indentation to the upholstery curvature not in the sense of a form identity to Understand is because the padding curvature of the padding product is not uniform, but depends on the deformation of the paper area.
  • the adaptation of the profile indentation it should be understood that the upholstery curvature formed by the crushing cavity is not substantially changed when accommodated in the profile indentation, in particular the padding is not irreversibly deformed there.
  • the at least one profile indentation is limited in the axial direction by radial elevations. It is clear that a central radial elevation limits the adjacent profile indentation on one side.
  • two outer radial projections are provided in the formation of two Profileinbuchtitch that limit the respective adjacent profile indentation laterally / axially.
  • the radial elevations are to be designed such that the padding curvature along the periphery of the pad product outer profile is held against axial deflection.
  • a radial distance of the profile profile of the cushion outer product profile along the axial direction of the at least one profile indentation and / or the radial projections in particular from the entire cushion outer product profile, starting from a shaft-mounted holder for the cutting edge and / or the cutting pad of the rotary cutter in the circumferential direction, in particular in the direction of rotation of the shaft, according to a first peripheral portion continuously.
  • a second in the direction of rotation adjoining the first peripheral portion peripheral portion of the cushion outer product profile increases the radial distance of the profile profile of the cushion outer product profile.
  • the radial distance of the profile profile of the cushion outer product profile opens, in particular at the end of the second peripheral portion in a radial high point whose profile is in turn adapted to the axial profile with the indentations / radial elevations in the axial direction.
  • the radial extent of the radial peak with respect to the entire body of the attachment is greatest.
  • the radial high point in a circumferential spacing of 225 ° to 0 l8o is spaced from the cutting edge and / or of the cutting pad.
  • the radial high point is not a physical point but as an extremum that forms an extremum line along the axial direction.
  • the at least one profile indentation extends in the circumferential direction from the holder toward the radial high point, wherein the radial distance changes.
  • the curvature in the axial direction may preferably remain substantially constant in the course of the circumferential direction of the respective indentation.
  • a radial distance of the gripping arms relative to the radial distance of the gripping arms substantially diametrically opposite, in particular to the gripping arms at a circumferential distance of about 125 0 to 225 0 arranged, radial high point in the radial elevations smaller and / or in the field at least one profile indentation at the lowest point larger.
  • the at least one profile indentation is in particular largely circular-shaped along an axial cross-section, in particular with a radius of more than 20 mm, preferably between 40 mm and 50 mm.
  • at least one radial elevation preferably a central radial elevation, circumferentially formed with a concave depression whose curvature is in particular smaller than that of at least one profile indentation or circular, in particular with a radius of less than 20 mm or greater than 5 mm, preferably between 10 mm and 20 mm, designed.
  • the just mentioned curvatures relate to the course of the profile indentation in the axial direction.
  • the article next to the upholstery product outer profile has another, flat, planar profile, namely a full-surface, in particular in cross-section in the axial direction and in the circumferential direction substantially flat channel outer wall.
  • the flat channel outer wall may well have small inclination changes, which are in particular smaller than 5 0 or 10 °.
  • the channel outer wall is preferably in the rotational circumferential direction of the shaft relative to the shaft-mounted holder for the cutting edge and / or for arranged the cutting pad of the rotary cutter down.
  • the planar channel outer wall may in particular extend substantially flat from a holder of the cutting edge and / or of the cutting pad fastened to the shaft to a radial high point which has already been mentioned above.
  • the radial extent of the radial high point in particular depends on the consideration of the location in the axial direction and is greatest with respect to the attachment and / or arranged at a circumferential distance of 125 0 to 190 0 from the cutting edge and / or from the cutting pad.
  • planar channel outer wall may continuously merge into the cushion product outer profile, in particular at the circumferential position of the radial high point / the radial high point line of the cushion outer product profile.
  • the full-surface body of the attachment has an axial extent of between 50 mm and 1000 mm, in particular between 100 mm and 200 mm, preferably between 120 mm and 180 mm.
  • the full-surface body can also be adapted to other manufacturing devices that have either greater axial expansions or smaller.
  • the attachment body should be over its entire surface in its outer profile to cover at least 50% of the maximum extent of the preformed paper web section.
  • the attachment body is made of a full-surface body piece, in particular of a plastic piece, for example of polylactide (PLA), in particular injection molded or manufactured by means of additive production, in particular a 3-D printing technique.
  • the full-surface attachment body is rotationally symmetrical to the longitudinal axis of the respective shaft and axisymmetric to an axis parallel to the conveying direction.
  • the just mentioned symmetry and asymmetry relates in particular to the outer upholstery product profile of the article.
  • the attachment may be a hollow body which is full-surface at least in the axial direction, the outer side of which may be profiled in sections, as described above, and is just.
  • the full-surface hollow body comprises an inner honeycomb structure, preferably with square honeycomb, in particular identical shape.
  • the attachment is mounted on the countershaft and attached thereto, in particular glued, to which the cutting pad is attached.
  • the cutting pad simultaneously moves in a direction opposite the directions of rotation of the cutting blade of the rotary cutter into the conveyor of the preformed paper web, the cutting operation cooperating with the rotating cutting pad.
  • the attachment is attached to the countershaft so that:
  • the flat channel outer wall is perpendicular to the conveying direction and downstream of the cushioning outer profile of the attachment; the flat channel outer wall is opposite; and or at a 3 o'clock position of the cutting blade (rotated 270 degrees from the cutting position, the cutting pad is also in a 3 o'clock position), the dunnage outer profile of the bonnet faces the conveyance path of the preformed paper web, while the flat channel outer wall (passive) faces out facing away from the conveyor belt.
  • Fig. 1 is a perspective view from the outside on an inventive
  • Apparatus for manufacturing a three-dimensional packaging product from a single- or multi-ply paper web, namely an upholstery product the apparatus being designated by the reference numeral 1 and the padding product by the reference numeral 3.
  • FIG. 2a-h show a lateral cross-sectional view of the production device for the unambiguous representation of the deformation station 21 and the rotary cutter 27, wherein different operating situations of the rotary cutter 27 are shown and the course of the rotary movement of the rotary cutter from the actual section (Fig. 2a) to the point in time before the cut (Fig. 2h) (about 25 ° before the cut);
  • FIG. 3a-h is a perspective view of the manufacturing device without the housing protection parts shown in Fig. 1 and storage for the respective shafts of the rotary cutter, wherein different corner positions starting from the cutting process (Fig. 3a) to the time just before the cut (Fig. 3h (25 0 before the cut)) are shown;
  • Fig. 4 is a perspective view of the attachment according to the invention for attachment to one of the shafts, namely cutting blade shaft or countershaft;
  • Fig. 5 is a cross-sectional view of the attachment with the cross-sectional line drawn through the center with the radial projection;
  • Fig. 6 is an end view of the essay.
  • the cushioning product is shown schematically. In reality, it has no idealized shape, but is depending on the formability of the paper differently good, only the basic design of the upholstery product as a dumbbell in cross-section is shown by the drawing.
  • the cushioning product 3 according to the invention has a central deformation strip 5 flanked by two lateral crushing cavities 7 and 11, the cushioning property being mainly formed by the crushing cavities 7 and 11. Due to the crushing cavities, the upholstery product occupies the dumbbell shape with the two outer-side upholstery bulges 13, 15, which later determines the particular profiling of the full-surface attachment according to the invention. Depending on the configuration of the cushioning product 3, a profile side of the attachment can be shaped accordingly.
  • the device according to the invention has a preforming station, which is formed by a turning and / or unrolling device (not shown in detail) (at 17) and by a deformation device 21, which can be seen in FIGS.
  • the deformation device is assigned the reference numeral 21.
  • the deformation device 21 has two opposite embossing wheels 23, 25, which defines a delivery path F towards the rotary cutter 27 at their delivery.
  • the rotary cutter 27 is then arranged, which has a cutting blade 31, which cuts the conveying path F in a cutting position (12 o'clock position (see FIG. 2)).
  • the construction of the cutting blade 31, in particular the attachment to the cutting blade shaft 33 and its synchronization with the cutting pad 35, which are opposite to one of the cutting blade shaft Countershaft 37 is attached.
  • the countershaft 37 and the cutting blade shaft 33 are at the same height with respect to the conveying direction F. In the cutting position, the cutting pad 35 is in a 6 o'clock position, as seen in FIG. 2a.
  • Further details on the rotary cutter 27 are given in the German patent application DE 10 2012 018 867 A1, which is to be incorporated with respect to the disclosure of the rotary cutter 27 and the associated embossing station as a reference in this patent application.
  • the respective shafts 33, 37 are driven by a pair of gears 45, 47 to ensure the synchronization of the cutting pad 35 and the cutting blade 31.
  • the separated preformed paper web section passes via the initially slightly right-hand conveyor channel 51 to the exit of the production device, which can be closed by a plate 53 to prevent engagement at the exit.
  • an attachment 61 is attached to the countershaft 37.
  • the attachment 61 is bonded to the countershaft 37 and to a holder 63 which holds the cutting pad 35.
  • the attachment has a honeycomb body made with a 3 D printer mold and includes a base 65 from which two gripping arms, a narrow gripping arm 67 and a stronger gripping arm 71 extend past the counter shaft 37 and the holder 63.
  • the gripping arms 67, 71 form a longitudinal slot 73, via which the countershaft 37 together with the holder 63 is inserted into the attachment 61.
  • the clear width of the gripping arms 67, 71 of the longitudinal slot is adapted to the holder 63 and the countershaft 37, that a positive connection is formed there.
  • the longitudinal slot formed by the gripping arms 67, 71 has a contact base 75, which is partly cylindrical section-shaped is formed according to the cylindrical shape of the countershaft 37 to ensure a secure fit of the attachment 61 on the countershaft 37.
  • the attachment comprises an upholstered outer profile 77, which is formed in particular in the region of the stronger gripping arm 71. Furthermore, the attachment has a top outer channel wall 81 opposite the upholstery product outer profile 77, which is assigned to the narrower gripping arm 67.
  • the design of the attachment is shown in detail in Figures 4, 5 and 6.
  • the flat channel outer wall 81 is substantially flat and has only a slight change in inclination approximately at the level of the abutment bottom 75 of the longitudinal slot 73.
  • the upholstery product outer profile 77 is adapted to the cross-sectionally dumb-shaped upholstery product 3 and has two profile indentations 85, 87, which are bounded in the axial direction X by three circumferential radial projections 91, 93, 95.
  • the cushioning product outer profile 77 starts adjacent to the holder 63 of the cutting pad 35 and opens into a radial high point or point line 101, which has the maximum radial distance r max , wherein the radial distance r max at the radial elevations 91-93 is highest, which in particular in the figures 5 and 6 can be seen.
  • the area of the radial high-point line 101 serves as a conveying driver with respect to the cut-off paper web section when the cutting pad 35 is in a 12 o'clock position, see figure 2e, is brought.
  • the attachment with the region of the radial high-point line 101 and the flat channel outer wall 81 conveys the cut-off paper web section towards the exit of the production apparatus 1.
  • the radial high-point line 101 is not on the axis of the cutting blade or the center of the cutting pad, but in the direction of rotation offset by about 10-30 0 relative to an i8o ° position.
  • the central radial elevation 93 comprises a cable depression 103, which may, for example, have a radius of 14 mm ⁇ 3 mm.
  • the cross section (see Figure 6) circular section-shaped profile indentation 85, 87 is also circular section-shaped and has a radius of 40-50 mm.
  • the preferred width in the axial direction X for the attachment 61 is 50 to 1000 mm, in particular about 100-200 mm, preferably between 140 and 160 mm.
  • the attachment 61 according to the invention which is in contact with the preformed cushioning product 3 on the side of the cushioning product outer profile, is adapted thereto. Due to the wide cushioning product outer profile 77, the cut-off cushioning product 3 is well taken out of the area of the rotary cutter without squeezing the sensitive crushed cavities 7, 11 of the cushioning product 3.
  • the full-surface attachment 61 can not form a dust barrier for the preformed paper web section because the latter can slide along the continuous curvature of the profiling of the attachment.
  • the full-surface attachment is achieved, for example, that it is made of a plastic piece, with BAL is preferred. It has been shown that precise production by means of a 3D printer is advantageous.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

L'invention concerne un dispositif de fabrication d'un produit d'emballage tridimensionnel, tel qu'un produit rembourré, à partir d'une bande de papier monocouche ou multicouche, ledit dispositif comprenant : un poste de préformage qui façonne la bande de papier en un produit d'emballage tridimensionnel comportant au moins une cavité de froissage s'étendant dans la direction de la bande, ainsi qu'une coupeuse rotative jouxtant le poste de préformage dans le sens d'alimentation de la bande de papier, ladite coupeuse rotative coupant à la longueur souhaitée du produit d'emballage, dans la bande de papier préformée, une partie de la bande de papier préformée, ladite coupeuse rotative présentant un arbre de coupe auquel est fixé un tranchant de la coupeuse rotative et comportant éventuellement un arbre intermédiaire auquel est fixé un coussin de coupe dans lequel le tranchant entre lors du processus de découpe, un élément rapporté étant fixé à l'arbre de coupe et/ou à l'arbre intermédiaire pour augmenter l'extension radiale plane de l'arbre et former une partie de paroi de canal profilé sur toute la surface, profilé dont le tracé sur toute la surface s'étend dans le sens axial de l'arbre sur au moins la moitié de la largeur de la partie préformée de la bande de papier.
EP18723806.8A 2017-05-08 2018-05-08 Dispositif de fabrication d'un produit d'emballage tridimensionnel, tel qu'un produit rembourré, à partir d'une bande de papier monocouche ou multicouche Active EP3621794B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017109867.4A DE102017109867A1 (de) 2017-05-08 2017-05-08 Vorrichtung zum Fertigen eines dreidimensionalen Verpackungserzeugnisses, wie eines Polsterproduktes, aus einer ein- oder mehrlagigen Papierbahn
PCT/EP2018/061860 WO2018206571A1 (fr) 2017-05-08 2018-05-08 Dispositif de fabrication d'un produit d'emballage tridimensionnel, tel qu'un produit rembourré, à partir d'une bande de papier monocouche ou multicouche

Publications (2)

Publication Number Publication Date
EP3621794A1 true EP3621794A1 (fr) 2020-03-18
EP3621794B1 EP3621794B1 (fr) 2025-07-02

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ID=62148367

Family Applications (1)

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EP18723806.8A Active EP3621794B1 (fr) 2017-05-08 2018-05-08 Dispositif de fabrication d'un produit d'emballage tridimensionnel, tel qu'un produit rembourré, à partir d'une bande de papier monocouche ou multicouche

Country Status (5)

Country Link
US (1) US11370190B2 (fr)
EP (1) EP3621794B1 (fr)
DE (1) DE102017109867A1 (fr)
PL (1) PL3621794T3 (fr)
WO (1) WO2018206571A1 (fr)

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Also Published As

Publication number Publication date
EP3621794B1 (fr) 2025-07-02
US20200070458A1 (en) 2020-03-05
PL3621794T3 (pl) 2025-10-13
WO2018206571A1 (fr) 2018-11-15
DE102017109867A1 (de) 2018-11-08
US11370190B2 (en) 2022-06-28

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