EP3621792B1 - Dispositif de fabrication d'un produit de rembourrage - Google Patents

Dispositif de fabrication d'un produit de rembourrage Download PDF

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Publication number
EP3621792B1
EP3621792B1 EP18723487.7A EP18723487A EP3621792B1 EP 3621792 B1 EP3621792 B1 EP 3621792B1 EP 18723487 A EP18723487 A EP 18723487A EP 3621792 B1 EP3621792 B1 EP 3621792B1
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EP
European Patent Office
Prior art keywords
paper strip
station
wedge
deformation
feed 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.)
Active
Application number
EP18723487.7A
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German (de)
English (en)
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EP3621792A1 (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
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Publication of EP3621792A1 publication Critical patent/EP3621792A1/fr
Application granted granted Critical
Publication of EP3621792B1 publication Critical patent/EP3621792B1/fr
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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 articles ; Making three-dimensional articles
    • B31D5/0039—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making dunnage or cushion pads
    • B31D5/0043—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making dunnage or cushion pads including crumpling flat material
    • B31D5/0047—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making dunnage or cushion pads including crumpling flat material involving toothed wheels
    • 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 articles ; Making three-dimensional articles
    • B31D5/0039—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making dunnage or cushion pads
    • B31D5/0043—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making dunnage or cushion pads including crumpling flat material
    • B31D5/0052—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making dunnage or cushion pads including crumpling flat material involving rollers
    • 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
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/08—Creasing
    • B31F1/10—Creasing by rotary tools
    • 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
    • B31D2205/0017—Providing stock material in a particular form
    • B31D2205/0035—Providing stock material in a particular form as fan folded web
    • 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
    • B31D2205/0047—Feeding, guiding or shaping the material
    • 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
    • B31D2205/0076—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads involving particular machinery details
    • B31D2205/0082—General layout of the machinery or relative arrangement of its subunits

Definitions

  • the invention generally relates to an apparatus for manufacturing a cushioning product, for example an endless cushioning tube or a cushioning pad, from a single or multi-ply continuous paper web.
  • Generic filling material production devices are set up, for example, in logistics centers as a portable, mobile unit in order to provide length-made or endless cushioning material when packaging an object.
  • the padding material or padding product is obtained from a stock of paper web that is space-saving in comparison to the padding product, such as a paper web roll or a paper web leporello stack.
  • the paper web preferably consists of recycled paper.
  • the paper web is drawn off a stack or roll and deformed in order to form air pockets which cause cushioning between the goods to be packaged and a shipping container.
  • the items are stowed using standardized packaging processes and in packaging of standardized sizes. It is important to provide the required upholstery material in consistent quality and predefined three-dimensional dimensions to enable an efficient workflow.
  • Generic devices for manufacturing a cushioning product from a single or multi-ply continuous paper web are, for example DE 10 2013 015 875 A1 and DE 10 2014 016 874 A1 known. There is a desire to provide large amounts of cushioning material as quickly as possible and without the occurrence of paper jams, with a high cushioning quality, ie a good damping capacity of the cushioning material, being provided.
  • US 6,190,299 B1 relates to an upholstery manufacturing machine.
  • the paper web can be provided as a supply, for example as a rolled-up roll or a leporello stack.
  • the paper web preferably has a width of at least 30 cm and/or at most 200 cm, preferably between 50 cm and 100 cm, in particular a width of about 70 cm.
  • the length of the paper web is preferably substantially, i.e. at least 10, 50 or 100 times greater than the width of the paper web.
  • the thickness of the paper web corresponds to the thickness of the single- or multi-ply paper web material and is preferably less than 1 mm. The use of recycled paper is preferable due to its special environmental friendliness.
  • the cushioning product manufacturing apparatus comprises a hopper-like preforming station for compressing the paper web in the transverse direction.
  • the preforming station is preferably designed to tuck or roll up the paper web in the transverse direction.
  • the preforming station can have funnel inner walls on the sides, which form a preform contour that tapers in a funnel-like manner in the conveying direction of the paper web.
  • the cushioning product manufacturing device has a deformation station which is preferably immediately adjacent to the preforming station in the conveying direction of the paper web.
  • the deformation station includes two embossing rolls which intermesh in a deformation region to form the paper web into a cushioning product, such as a tubular paper cushion, having at least one longitudinally extending crush cavity.
  • the transverse direction of the paper web is preferably defined transversely to the conveying direction of the paper web and can correspond to the transverse direction or width of the supply, in particular of the leporello stack or the roll.
  • the transverse direction at the entrance to the preforming station is preferably defined, for example, by a guide device arranged there, such as a deflection roller.
  • the preforming station a lifting device, which is preferably arranged directly in front of the embossing rollers in the conveying direction, for lifting a central area of the paper web.
  • the lifting device can be arranged in a rear region of the preforming station in the conveying direction.
  • the lifting device is preferably arranged near the exit of the preforming station or near the entrance of the deformation station.
  • the lifting device preferably lifts a paper web that has already been preformed by parts of the preforming station, for example inner walls of the hopper lying opposite one another in the transverse direction.
  • a lifting device can be realized, for example, pneumatically by means of compressed air or mechanically, for example by a particularly freely rotating roller, a ramp or the like.
  • the lifting device is preferably designed to lift the paper web perpendicular to the conveying direction of the paper web and perpendicular to the transverse direction of the paper web. It is clear that the longitudinal direction of the paper web corresponds to the conveying direction for continuous conveying.
  • the central area of the paper web that is to be lifted is preferably arranged centrally in the transverse direction of the paper web, which is in particular preformed. In particular, the central area of the paper web is arranged centrally in the transverse direction of the production device, preferably the deformation device and/or the preforming station.
  • the preforming station has a lower guide surface in the vertical direction, from which the lifting device causes the paper web to be lifted particularly harmoniously and/or continuously upwards by at least 100 mm, at least 25 mm and/or at most 100 mm, at most 45 mm, preferably about 25 mm.
  • the lifting device is designed to lift the central area of the paper web to the vertical height of the deformation area of the deformation station.
  • the embossing rollers have pitch circle diameters, with the contact point of the pitch circle diameters, in particular a tangent or secant contact point, defining a deformation plane which is oriented, for example, in accordance with the pitch circle tangent or secant.
  • the lifting device can lift the central area of the paper web up to the level of this deformation plane ⁇ 20 mm or ⁇ 10 mm.
  • the lifting device can lift the central area of the paper web up to at least the level of this deformation plane.
  • the width of the lifting device is less than or equal to the effective width of the embossing rollers (in their axial direction).
  • a central area bent convexly upwards can be fed to the embossing rollers of the deformation station. It is preferred that the lifting takes place above the deformation area in which the deformation of the paper web takes place by the embossing rollers, so that the largest possible central paper web area is provided for the deformation by the embossing rollers.
  • the lifting device comprises a wedge.
  • the lifting device can consist of a wedge.
  • the wedge is formed so that it rises, at least in sections.
  • the wedge has a transverse and vertical cross-sectional area that tapers vertically upwardly from a lower base of the wedge, which preferably may be formed on the lower guide surface of the preforming station.
  • the wedge can have a saddle area of constant height, in particular in its highest section, which is at the rear in the conveying direction.
  • the wedge may be formed from a plastic material such as POM or PLA, or from a metal material such as steel or aluminum.
  • the edges of the wedge are preferably rounded, so that the paper web can slide along the wedge without an increased risk of tearing.
  • the wedge has a base in the conveying direction with a transverse width which, at least in sections, measures at least 10 mm, at least 25 mm and/or at most 100 mm, at most 45 mm, preferably around 35 mm.
  • the width of the base of the wedge is less than the width of the embossing rolls.
  • the base of the wedge has a transverse width that increases at least in sections in the conveying direction.
  • the base of the wedge can have a constant transverse width at least in sections in the conveying direction.
  • At least one section of the wedge that is at the front in the conveying direction is preferably designed with an increasing transverse width.
  • at least one section of the wedge that is at the rear in the conveying direction is configured with a constant transverse width.
  • the width, height and/or shape of the wedge preferably only changes continuously or without jumps in the conveying direction.
  • the preforming station comprises, in particular, two guide rods for promoting the wrapping and/or rolling of the paper web in the preforming station.
  • the guide rods are arranged in particular between lateral hopper inner walls of the preforming station, preferably with a transverse spacing that decreases in the conveying direction.
  • one guide rod each can run parallel or substantially parallel to each inner wall of the funnel.
  • one guide rod and an adjacent inner hopper wall are oriented parallel to one another, i.e.
  • the inner wall of the hopper on the right in the conveying direction is parallel to the guide rod on the right in the conveying direction and the inner wall of the hopper on the left in the conveying direction is parallel to the guide rod on the left in the conveying direction.
  • the left guide rod may be shorter than the right guide rod, or vice versa.
  • the left guide rod may be shorter than the right guide rod, or vice versa.
  • Preferably has at least one Guide rod, in particular both guide rods, a cone end, which widens starting from an initially constant guide rod cross-section (diameter) to a larger guide rod end diameter. It is clear that the rear ends of the guide rods in the conveying direction are arranged at a distance from one another and from the deformation station.
  • the lifting device in particular the wedge, can be arranged in the transverse distance between the longitudinal ends of the guide rods.
  • the guide rods are preferably arranged at a preferably constant vertical distance from a lower guide surface of the preforming station.
  • a hold-down device such as a hold-down plate
  • a hold-down plate can be arranged on the guide rods to hold down the central region of the paper web, which extends at least in sections transversely between the guide rods in the conveying direction.
  • an input section that is at the front in the conveying direction for example a front quarter, front third or a front half of the guide rods, can be realized with a hold-down plate that extends flat between the guide rods.
  • the particular average height of the guide rods relative to the guide surface can preferably be between 25 mm and 45 mm.
  • a guide rod diameter can initially preferably be between 10 mm and 30 mm. On the exit side or end side in a cone section, the guide rod diameter can preferably be between 20 mm and 60 mm, for example around 45 mm.
  • the lifting device is designed to lift the central area of the paper web to above a lower edge of the guide rods and/or possibly the hold-down device.
  • the lifting device is designed to lift the central area of the paper web at most to below the upper edge of the guide rods.
  • a distance from an axis of rotation of one of the embossing rollers to the lifting device in the conveying direction is at least as large as an embossing roller radius.
  • the distance from the axis of rotation of the embossing rollers to the lifting device, in particular a rear end of the lifting device in the conveying direction, for example a rear wedge end in the conveying direction is at least 20 mm and at most 200 mm, preferably between 30 mm and 170 mm.
  • the Distance from the axis of rotation of one of the embossing rollers to the lifting device in the conveying direction smaller, preferably up to 600 mm smaller, equal to or larger than, preferably up to 60 mm larger than, a distance from the axis of rotation of one of the embossing rollers to the rear end of a guide rod in the conveying direction , preferably the longer guide rod.
  • the embossing rollers preferably have the same outer radius.
  • the radius of an embossing roller can be between 3 cm and 8 cm, preferably between 4 cm and 6 cm.
  • the deformation station has an inner channel for guiding the preformed paper web, which channel walls have recesses through which an embossing roller protrudes.
  • the channel walls serve as screens, which allow the paper web to be conveyed only in an area which is necessary for deforming the paper web with the embossing rollers.
  • the paper web is preferably guided through the inner channel in such a way that a paper jam is avoided.
  • the lower guide surface of the deformation station transitions into the inner channel without kinks and/or with a transition edge.
  • a transition edge can preferably be rounded.
  • the transition from the lower guide surface of the preforming station into the inner channel of the deformation station preferably takes place harmoniously in the vertical direction and/or conveying direction.
  • the height of the inner channel at the entrance to the deformation station is preferably between 50 mm and 150 mm, preferably between 70 mm and 105 mm.
  • a lower channel wall is flush with the lower guide wall or guide surface of the preforming station.
  • the upper channel wall can taper in the conveying direction and extend towards a lower channel wall.
  • a preferred embodiment of a device according to the invention for manufacturing an upholstery product also includes a guide device upstream of the preforming station in the paper conveying direction, such as a sliding edge or a deflection roller, preferably a pair of deflection rollers or a pairing of a deflection roller with a sliding edge, for aligning the paper web for the preforming station.
  • the guide device preferably allows the paper web to be drawn flat into the cushioning product manufacturing device without being deformed in the transverse direction of the paper web.
  • the apparatus for manufacturing a cushioning product according to the invention is generally designated by the reference numeral 1 in the following figures.
  • the main components of the upholstery product manufacturing device 1 are a preforming station and a deformation station 13, as well as a lifting device 4 arranged in front of the deformation station 13 in the conveying direction F.
  • the lifting device 4 can be pneumatic, for example, by means of an air jet, mechanically, for example by means of a ramp, a preferably freely rotating wheel or, as shown by way of example, a wedge 41.
  • the upholstery product manufacturing device 1 shown in the figures also includes a rotary cutter 15 in order to separate individual upholstery cushions (not shown in detail) from the tubular upholstery product 3, which has two crumple cavities 7, 9 extending in the longitudinal direction L.
  • a rotary cutter 15 instead of a rotary cutter 15, another mechanism, for example a toothed blade at the exit, can also be used of the upholstery product manufacturing device 1 for tearing off a long upholstery strand (not shown in detail).
  • the paper web 5 is conveyed along a conveying direction F through the device 1 by the conveying and embossing rollers 31, 33 drawing the paper web 5 from a paper web supply, not shown in detail, preferably a leporello stack or a roll.
  • the embossing rollers 31 and 33 can therefore serve in a functional union for conveying the paper web 5 in the conveying direction F and for forming the paper web 5 into a cushioning product 3 .
  • At least one of the conveyor rollers 31, 33 is driven by an electric motor, not shown in detail, which can also drive the rotary cutter 15.
  • the rotary cutter 15 can have its own electric motor.
  • a paper web 5 runs through the device 1 in that the paper web 5 is first drawn into the upholstery product production device 1 at the guide device 17, which is realized by two deflection rollers 18, 19 extending in the transverse direction Q.
  • the paper web 5 reaches the preforming station 11, which tapers in a funnel-like manner in the conveying direction F until it opens into the deformation station 13 at its rear end in the conveying direction F.
  • the paper web 5 is preformed by being compressed at least in the transverse direction Q, for example by the longitudinal edges of the paper web 5 being folded in and possibly rolled up by lateral inner funnel walls 23, 25, optionally with the aid of guide rods 27, 29.
  • the preformed paper web 5 is then conveyed further into an inner channel 37 of the deformation station, into which the embossing wheels 31, 33 penetrate.
  • the embossing wheels 31, 33 grip the paper web 5 with their teeth meshing in a deformation area 35, shaping it to form a cushioning product 3 that has two crumple cavities 7, 9 extending in the longitudinal direction L and one between the crumple cavities 7 and 9 the embossing wheels 31, 33 formed, wave-like embossing profile 8.
  • the cushioning product 3 is discharged from the device 1 in the further conveying process, as schematically shown in FIG figure 3 shown. Before it is discharged from the device 1, the cushioning product 3 can be conveyed in the conveying direction F along or through a separating station such as the rotary cutter 15 shown here as an example, which cuts in with a (rotary) cut individual conveyor cushion can separate from the cord-shaped cushioning product 3.
  • the deformation station 13 is in the figures 1 and 2 shown in section.
  • the upper conveyor roller 31 consists of an embossing gear wheel 31a, which is provided with a co-rotating side disk 31b on the right and left transversely to the conveying direction F.
  • the side disks 31b have approximately the same or a slightly smaller outer diameter than the embossing wheel 31.
  • the lower embossing roller 33 consists of only one embossing gear wheel, which is as wide in the transverse direction Q as the gear wheel 31a of the upper embossing roller 31.
  • the teeth of the embossing rollers 31 and 33 engage in one another in a deformation area 35 for conveying and deforming the paper web 5 .
  • the pitch circle diameter D 31 of the upper embossing wheel 31 is the same as the pitch circle diameter D 33 of our embossing wheel 33.
  • the center distance of the embossing rollers 30, 33 corresponds approximately to the sum of the pitch circle radii.
  • a deformation plane D is preferably defined by a common pitch circle tangent. The deformation plane D lies in the vertical direction V approximately in the middle of the conveying height of the paper web 5 in the conveying direction F.
  • the deformation station 13 has an inner channel 37 which is delimited in the vertical direction by a lower channel wall 38 and an upper channel wall 39 which each have a recess 32, 34 for the lower and upper embossing roller 31, 33, respectively.
  • the inner channel 37 ensures that the areas of the embossing rollers 31, 33 that can come into physical contact with the paper web 5 during operation always have a speed component in the horizontal direction H that is oriented in the same direction as the conveying direction F. This prevents the paper web 5 from running onto the embossing rollers, a journey 33 with the possible result of paper jams.
  • the pitch circle diameter D 31 or D 33 of the embossing rollers 31 or 33 is preferably between 8 and 12 cm and particularly preferably about 10 cm.
  • the width of the embossing rollers 31, 33 in the transverse direction Q is usually less than 30 cm, preferably less than 20 cm, in particular less than 10 cm.
  • the transverse width of the embossing rollers 31, 33 can be, for example, about 30 mm to about 70 mm, preferably between 30 and 50 mm.
  • FIGS. 1 and 2 show the rear area of the preforming station 11 in the conveying direction
  • Figures 4 and 5 show a rear view or a Perspective view of the exemplary embodiment of an upholstery product manufacturing device 1 according to the invention with a view of the preforming station 11, with a cover of the preforming station 11 not being shown so that the inner components can be seen. It is clear that during operation a cover extends over the entire area in the transverse direction Q and horizontal direction H over the preforming station 11 opposite the guide surface 21 of the preforming station 11 .
  • the lower guide surface 21 of the preforming station 11 forms the bottom of the preforming station 11 in the vertical direction V.
  • the lower guide surface 21 extends in the transverse direction between a left side wall 23 and a right side wall 25.
  • the side walls 23 and 25 lead like a funnel towards the entrance of the deformation station 13 .
  • Folding in and possibly rolling up the longitudinal ends of the paper web is supported by the guide rods 27 and 29, respectively, which extend parallel to one of the inner walls 23 or 25 of the funnel.
  • the guide rod 27 on the left in the conveying direction F ends in front of the right guide rod 29 in the conveying direction F.
  • the distance between the right guide rod 29 and the deformation station 13 is therefore less than the distance between the left guide rod 27 and the deformation station 13.
  • the longitudinal ends of the guide rods preferably widen conically .
  • a hold-down plate 28 is fastened to the underside of the two guide rods 27 and 29 along the front half of the guide rods 27, 29 in the conveying direction F.
  • the hold-down plate extends over the full area between the guide rods 27 and 29 above and opposite the guide surface 21.
  • the paper web 5 is guided below the hold-down plate 28 and above the guide surface 21 after it has entered the device 1 between the deflection rollers 18 and 19 of the control station 17 .
  • the holding-down plate 28 has the central region of the preforming station 11 in a convexly projecting section in the conveying direction F, which ends several centimeters before the guide rods 27 and 29, in particular before their widened end section.
  • the lifting device 4 embodied as a wedge 41 , for example, is arranged between the rear end of the hold-down plate 28 in the conveying direction F and the deformation station 13 .
  • the central area of the paper web 5 guided between the guide surface 21 and the hold-down plate 28 (cf figure 2 ) is guided during the production of the upholstery product in the conveying direction F against the lifting device 4, which then lifts the central area of the paper web.
  • the wedge 41 leads continuously upwards from the guide surface 21 .
  • the lower base 43 of the wedge 41 is preferably in full-surface contact with the guide plate 21 .
  • a guide wedge 41 is in detail in the Figures 6a, 6b, 6c and 6d pictured. As per the perspective view Figure 6d As can be seen, the wedge 41 has a variable cross-sectional area in the conveying direction F, the cross-sectional areas discussed here extending in a plane in the transverse direction Q and vertical direction V vertically on the guide surface 21 and/or the deformation plane D.
  • the wedge has an inclined ramp surface 42 which, with the flat guide surface 21, forms an angle ⁇ between preferably 130° and 160°, in particular 155°.
  • the ramped surface 42 can be formed as a continuous, in particular straight, rising surface between the guide surface 21 and an upper end of the wedge 41 in the vertical direction V.
  • the highest point of the wedge 41 can preferably run as a saddle region 45 with a longitudinal extent in the horizontal direction, that is to say transversely, in particular perpendicularly, to the vertical direction V and also to the transverse direction Q.
  • the length Ls of the saddle area 45 is preferably between 5 mm and 35 mm, in particular approximately 10 mm.
  • the vertical height h K of the wedge 41 is preferably between 25 mm and 45 mm, preferably about 35 mm.
  • the wedge length L K can preferably be between 80 mm and 120 mm and is particularly preferably about 100 mm.
  • the preferably largest transverse width b K of the wedge 41 can preferably be between 10 mm and 60 mm, in particular between 25 mm and 45 mm, preferably about 35 mm.
  • the wedge 41 can, for example, in its rear in the conveying direction F Section 47 have a maximum transverse width b K of about 35 mm.
  • the wedge 41 can widen in the transverse direction Q like a wedge.
  • the wedge 41 can have a front sweep section 46 with a sweep angle ⁇ , the sweep angle ⁇ preferably being at most 25°, in particular at most 15°. The angle of sweep ⁇ can approach 0° and thus disappear.
  • the front view according to Figure 6b gives an idea of the cross-sectional area of the wedge 41 .
  • the cross-sectional area of the wedge 41 can taper upwards in the vertical direction V, for example with a taper angle ⁇ , which is preferably at most 45°, in particular approximately 35°.
  • the taper angle ⁇ can also be implemented as vanishing, practically equal to 0°.
  • the distance a in the conveying direction F between the rear end in the conveying direction F or the rear side R of the wedge 41 and the axes A of the embossing rollers 31, 33 is preferably less than 200 mm.
  • the distance a is preferably in the range between 30 mm and 170 mm.
  • the distance b in the conveying direction F between the end of the longer conveying rod 29 and the rear end of the wedge 41 in the conveying direction F is preferably less than 100 mm, in particular approximately 60 mm or less. It is preferred that, as shown, the rear end of the wedge in the conveying direction F lies behind the end of the guide rods 27 and 29, respectively. However, it is also conceivable that the rear side R of the wedge already ends in the conveying direction F in front of the guide rods 27, 29 (not shown in detail).
  • the conveyor rods 27, 29 are preferably arranged with their respective rod axis at a distance f of 25 mm to 45 mm, preferably parallel above the guide surface 21.
  • the upper edge of the wedge 41 is arranged up to 10 mm above or up to 10 mm below the deformation plane D.
  • the upper edge of the wedge 41 is preferably about 10 mm ⁇ 5 mm above the deformation plane D.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Making Paper Articles (AREA)
  • Buffer Packaging (AREA)

Claims (14)

  1. Dispositif (1), destiné à fabriquer un produit de rembourrage (3) à partir d'une bande de papier (5) continue, monocouche ou multicouches, comprenant :
    un poste de préfaçonnage (11) en forme d'entonnoir, pour comprimer, de préférence replier ou enrouler la bande de papier (5) dans la direction transversale (Q) ; et
    un poste de déformation (13) se raccordant sur le poste de préfaçonnage (11) dans la direction de transport (F) de la bande de papier (5), pourvu de deux cylindres de gaufrage (31, 33), qui s'engagent l'un dans l'autre dans une zone de déformation (35), pour déformer la bande de papier (5) en un produit de rembourrage (3), avec au moins cavité de froissage (7, 9) s'étendant en direction longitudinale (L), le poste de préfaçonnage (13) comportant un système de soulèvement (4), placé à l'avant des cylindres de gaufrage (31, 33) dans la direction de transport (F), pour soulever une zone centrale de la bande de papier (5), caractérisé en ce que le système de soulèvement (4) comprend une cale (41) qui est façonnée au moins par sections en s'accroissant dans la direction de transport (F).
  2. Dispositif selon la revendication 1, le poste de préfaçonnage comportant une surface de guidage (21) inférieure, à partir de laquelle le système de soulèvement (4) provoque un soulèvement particulièrement harmonieux et / ou continu, croissant vers le haut de la bande de papier (5), de la valeur d'au moins 10 mm, d'au moins 25 mm et / ou d'au plus 100 mm, d'un maximum de 45 mm, de préférence d'environ 35 mm.
  3. Dispositif selon la revendication 1 ou 2, le système de soulèvement (4) étant conçu de sorte à soulever la zone centrale de la bande de papier (5) à hauteur verticale de la zone de déformation, les cylindres de gaufrage (31, 33) comportant des diamètres de cercle de roulement (D31, D33) dont la zone de contact définit un plan de déformation (D).
  4. Dispositif selon l'une quelconque des revendications précédentes, le système de soulèvement (4) soulevant la zone centrale de la bande de papier au moins jusqu'à la hauteur du plan de déformation (D).
  5. Dispositif selon l'une quelconque des revendications précédentes, la cale (41) comportant une surface de section transversale dans la direction transversale (Q), qui en partant d'une base (43) inférieure de la cale, se rétrécit vers le haut dans la direction verticale (V), dans sa section arrière dans la direction de transport, notamment la plus élevée, la cale (41) comportant une zone en selle (45) de hauteur (hs) constante.
  6. Dispositif selon la revendication 5, la cale (41) comportant dans la direction de transport (F) une base (43) pourvue d'une largeur transversale (bK) qui mesure au moins par sections au moins 10 mm, au moins 25 mm et / ou au plus 100 mm, au plus 45 mm, de préférence environ 35 mm, notamment la base (43) présentant au moins par sections dans la direction de transport (F) une largeur transversale croissante et / ou la base (43) présentant au moins par sections dans la direction de transport (F) une largeur transversale (bK) constante.
  7. Dispositif selon l'une quelconque des revendications précédentes, le poste de préfaçonnage comprenant des barres de guidage (27, 29), destinées à soutenir le pliage et / ou l'enroulement de la bande de papier (5) dans le poste de préfaçonnage (11), notamment entre des parois intérieures (23, 25) d'entonnoir latérales du poste de préfaçonnage (11), chaque fois une barre de guidage (27, 29) s'écoulant à la parallèle de chaque fois une paroi intérieure (23, 25) d'entonnoir, notamment les barres de guidage (27, 29) étant placées avec un écart vertical de préférence constant par rapport à une surface de guidage (21) inférieure du poste de préfaçonnage.
  8. Dispositif selon la revendication 7, sur les barres de guidage (27, 29) étant placé un système de maintien vers le bas, tel qu'une plaque de maintien vers le bas (28), pour maintenir vers le bas notamment la zone centrale de la bande de papier (5), qui dans la direction de transport (F) s'étend au moins par sections à la transversale entre les barres de guidage (27, 29).
  9. Dispositif selon la revendication 8, le système de soulèvement (4) soulevant la zone centrale de la bande de papier (5) jusqu'au-dessus d'un bord inférieur des barres de guidage (27, 29) et / ou le cas échéant du système de maintien vers le bas (28), notamment le système de soulèvement (4) soulevant la zone centrale de la bande de papier (5) au plus jusqu'en-dessous du bord supérieur des barres de guidage (27, 29).
  10. Dispositif selon l'une quelconque des revendications précédentes, un écart (a) entre l'axe de rotation (A) de l'un des cylindres de gaufrage (31, 33) et le système de soulèvement (4) dans la direction de transport étant au moins aussi grand qu'un rayon (D31, D33) des cylindres de gaufrage.
  11. Dispositif selon la revendication 10, l'écart (a) entre l'axe de rotation (A) de l'un des cylindres de gaufrage (31, 33) et le système de soulèvement (4) dans la direction de transport (F) étant plus petit ou plus grand qu'un écart entre l'axe de rotation (A) de l'un des cylindres de gaufrage (31, 33) et l'extrémité arrière d'une barre de guidage (27, 29) dans la direction de transport.
  12. Dispositif selon l'une quelconque des revendications précédentes, le poste de déformation (13) comportant un canal interne (37), destiné à guider la bande de papier (5) préfaçonnée, qui comporte des parois (38, 39) de canal, pourvues d'encoches (32, 34), à travers lesquelles saillit chaque fois un cylindre de gaufrage (31, 33).
  13. Dispositif selon la revendication 12, la surface de guidage (21) inférieure du poste de déformation (11) passant sans coude ou par une arête de transition dans le canal interne (37).
  14. Dispositif selon l'une quelconque des revendications précédentes, comprenant par ailleurs un système de guidage (17), placé en amont du poste de préfaçonnage (11) dans la direction de transport (F) du papier (17), tel qu'une arête de coulissement ou un galet de renvoi (18, 19), pour orienter la bande de papier (5) pour le poste de préfaçonnage (11).
EP18723487.7A 2017-05-08 2018-05-08 Dispositif de fabrication d'un produit de rembourrage Active EP3621792B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017109851.8A DE102017109851A1 (de) 2017-05-08 2017-05-08 Vorrichtung zum Fertigen eines Polsterproduktes
PCT/EP2018/061848 WO2018206567A1 (fr) 2017-05-08 2018-05-08 Dispositif de fabrication d'un produit de rembourrage

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EP3621792A1 EP3621792A1 (fr) 2020-03-18
EP3621792B1 true EP3621792B1 (fr) 2023-06-21

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EP (1) EP3621792B1 (fr)
DE (1) DE102017109851A1 (fr)
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WO (1) WO2018206567A1 (fr)

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PL3621792T3 (pl) 2023-11-20
US11904570B2 (en) 2024-02-20
EP3621792A1 (fr) 2020-03-18
DE102017109851A1 (de) 2018-11-08
WO2018206567A1 (fr) 2018-11-15
US20200070460A1 (en) 2020-03-05

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