WO2013124549A1 - Method for manufacturing a tubular profile member, resulting tubular profile member, and use of said tubular profile member - Google Patents
Method for manufacturing a tubular profile member, resulting tubular profile member, and use of said tubular profile member Download PDFInfo
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- WO2013124549A1 WO2013124549A1 PCT/FR2013/000044 FR2013000044W WO2013124549A1 WO 2013124549 A1 WO2013124549 A1 WO 2013124549A1 FR 2013000044 W FR2013000044 W FR 2013000044W WO 2013124549 A1 WO2013124549 A1 WO 2013124549A1
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- Prior art keywords
- strips
- tubular section
- tubular
- strip
- section
- Prior art date
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Classifications
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- 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
- B31F7/00—Processes not otherwise provided for
- B31F7/004—Making tubes
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- 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
- B31D5/0086—Making hollow objects
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- 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
- B31F1/0003—Shaping by bending, folding, twisting, straightening, flattening or rim-rolling; Shaping by bending, folding or rim-rolling combined with joining; Apparatus therefor
- B31F1/0045—Bending or folding combined with joining
- B31F1/0048—Bending plates, sheets or webs at right angles to the axis of the article being formed and joining the edges
- B31F1/007—Bending plates, sheets or webs at right angles to the axis of the article being formed and joining the edges for making articles with multilayered walls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D19/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D19/0004—Rigid pallets without side walls
- B65D19/0053—Rigid pallets without side walls the load supporting surface being made of more than one element
- B65D19/0077—Rigid pallets without side walls the load supporting surface being made of more than one element forming discontinuous or non-planar contact surfaces
- B65D19/0089—Rigid pallets without side walls the load supporting surface being made of more than one element forming discontinuous or non-planar contact surfaces the base surface being made of more than one element
- B65D19/0093—Rigid pallets without side walls the load supporting surface being made of more than one element forming discontinuous or non-planar contact surfaces the base surface being made of more than one element forming discontinuous or non-planar contact surfaces
- B65D19/0095—Rigid pallets without side walls the load supporting surface being made of more than one element forming discontinuous or non-planar contact surfaces the base surface being made of more than one element forming discontinuous or non-planar contact surfaces and each contact surface having a stringer-like shape
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00009—Materials
- B65D2519/00014—Materials for the load supporting surface
- B65D2519/00019—Paper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00009—Materials
- B65D2519/00049—Materials for the base surface
- B65D2519/00054—Paper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00009—Materials
- B65D2519/00084—Materials for the non-integral separating spacer
- B65D2519/00089—Paper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00263—Overall construction of the pallet
- B65D2519/00273—Overall construction of the pallet made of more than one piece
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00283—Overall construction of the load supporting surface
- B65D2519/00293—Overall construction of the load supporting surface made of more than one piece
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00313—Overall construction of the base surface
- B65D2519/00323—Overall construction of the base surface made of more than one piece
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00313—Overall construction of the base surface
- B65D2519/00328—Overall construction of the base surface shape of the contact surface of the base
- B65D2519/00333—Overall construction of the base surface shape of the contact surface of the base contact surface having a stringer-like shape
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00368—Overall construction of the non-integral separating spacer
- B65D2519/00378—Overall construction of the non-integral separating spacer whereby at least one spacer is made of two or more pieces
Definitions
- the present invention relates to a method of manufacturing a tubular section made of cardboard, composite material or the like, by superimposing and intimately assembling a plurality of strips of material forming a multilayer wall, in which is unrolled in a longitudinal direction corresponding to a longitudinal axis A of said tubular section at least a first strip of material intended to form at least partly the inner face of said tubular section, it is shaped around a longitudinal forming mandrel having a developed arranged to define the inner section of said tubular section, these unwinding and forming operations are repeated for each strip of material to the last strip of material intended to form at least partly the outer face of said tubular section, angularly shifting at least some of said strips of material.
- tubular profiles cylindrical or not, cardboard, composite material or the like is currently carried out according to various methods well known to those skilled in the art.
- a so-called "discontinuous" process consists of winding a strip of material, whose width corresponds to the length of the tubular section to be produced, around a rotary forming mandrel and whose section corresponds to that of the tubular profile to be formed.
- This strip of material is wound parallel to the axis of the mandrel, whose number of turns made determines the final thickness of the wall of the tubular section.
- This method has the drawbacks inherent to discontinuous processes, namely in particular the need to start and stop the machine for each tubular profile produced, resulting in significant machine fatigue, a relatively slow process and a high cost, but allows to produce tubular profiles on demand.
- the length of the profiles is, however, limited to the width of the width of material and the profiles of small sections or small diameters are difficult to achieve with this type of process.
- a so-called "continuous" process consists of winding several superimposed webs of material with a spiral offset around a rotating forming mandrel and then cutting the continuous tubular section obtained to the desired length.
- EP 0 387 171 and GB 2 000 105 disclose methods of making a can body from half strips of material having a width equal to half of the developed a longitudinal forming mandrel, these half-strips being disposed in opposition around said forming mandrel to form tubular sections whose peripheral wall has a constant thickness.
- the present invention aims to provide a solution to the problems mentioned above by proposing a continuous process for the manufacture of tubular sections of any size, thickness and section, by superimposing and intimately joining a plurality of strips of material, fast, reliable and economical way, by means of a machine whose size does not need to be oversized. Another object of the invention is still to provide such a manufacturing method which is also scalable and flexible. The invention also aims to provide a quality tubular profile with high mechanical performance and to be used for various applications in various sectors such as transport, packaging, furniture, building, industry, etc. .
- the invention relates to a method of manufacture of the kind indicated in the preamble, characterized in that at least a portion of the strips of material are used, at least two partial strips whose width is greater than half developed of the forming mandrel to create over-widths, said partial material webs are unwound so as to arrange them in opposition to said longitudinal axis A, said partial strips are shaped around said forming mandrel to form at least one layer of said tubular section, the over-widths of said partial strips are superimposed and assembled intimately.
- At least a portion of the strips of material may be used with two partial strips of the same width that are superimposed to form a double strip, a complex strip consisting of an assembly of several materials, a strip folded in half in the longitudinal direction to form a doubled strip, or a strip whose longitudinal edges are folded to form a partially doubled strip.
- At least two layers of said tubular section can be made with said partial strips provided with over-widths without shifting them angularly from one layer to another so that the over-widths are superimposed from one layer to the other for creating reinforced zones in the wall of said tubular section, or by shifting them angularly by 90 ° from one layer to another to create a tubular wall section of constant thickness.
- the invention also relates to a tubular section obtained according to the manufacturing method described above, this section can be used in particular for the manufacture in part or in full of pallets transport, packaging, furniture, trestles, trays, ducts, ventilation ducts, etc.
- FIGS. 1A to 1J show sectional views of various alternative embodiments of a tubular section according to the invention
- FIG. 2 is a diagrammatic view of a part of the production line making it possible to obtain the various embodiments of the tubular section according to the invention illustrated in FIGS. 1A to 1J
- FIG. 3 is a perspective view of a first embodiment of a transport pallet obtained by the use of at least one of the tubular sections of FIGS. 1A and 1J,
- FIG. 4 is a perspective view of a second embodiment of a transport pallet obtained by the use of at least one of the tubular sections of FIGS. 1A and 1J,
- FIG. 5 is a perspective view of a third embodiment of a transport pallet obtained by the use of at least one of the tubular sections of FIGS. 1A to 1J and circular section profiles,
- FIG. 6 is a perspective view of a plate obtained by the use of at least one of the tubular sections of FIGS. 1A to 1J and which can constitute the load plate of a transport pallet, and
- FIG. 7 is a perspective view of a ski obtained by the use of at least one of the tubular sections of FIGS. 1A to 1J and which can be associated with the plate of FIG. 6 to constitute a part of the sole and spacers. a transport pallet.
- the subject of the present invention is a process for the "continuous" type manufacture of tubular sections of any cross-section, which may be parallelepipedic, circular, polygonal, geometric or arbitrary depending on the final application. and the technical characteristics they must respect.
- the method according to the invention provides for the manufacture of a tubular section 1a, for example of cardboard, composite material or the like, by superimposition and intimate assembly of a plurality of strips of material.
- the method of manufacturing a tubular section 1a to 1j provides the following steps with reference to the production line 40 according to FIG. 2:
- the manufacturing method according to the invention differs from the state of the art in that, to make one, more or all of the layers forming the wall 6 of the tubular section 1a to 1j, at least two partial strips are used. 20 having a width smaller than the developed forming mandrel 4 and arranged in opposition to the longitudinal axis A.
- Partial strips having a width greater than half-developed of the forming mandrel 4 have been used to create over-widths on their longitudinal sides which are superimposed at the moment of their placing.
- shaped to create reinforced areas in the resulting section having a thickness el greater than the thickness e2 of other areas. These reinforced areas therefore offer different technical characteristics and in particular greater compressive strength allowing new applications for a board-based section.
- FIG. 2 which represents a part of the production line 40
- the shaping of the material strips 2 around the forming mandrel 4 is carried out by forming parts 42 arranged around said forming mandrel 4 in order to progressively lower the corresponding parts of the material strips 2 against the walls of the forming mandrel 4.
- These forming parts 42 may consist of rollers or fixed or similar shapers.
- the bands. of material 2 are glued in their path between the reel (not shown) and the forming mandrel 4 by a sizing device 41.
- the manufacturing line 40 comprises a number of modules M1 to M8 corresponding to the number of strips 2a to 2h to be superimposed to form said tubular section 1a to 1j, each module can be constituted of a reel, a sizing device 41, diverting rollers and forming parts 42.
- Drive systems are arranged along the forming mandrel 4 between certain modules M1 to M8 for positively cause the tubular profile being formed axially along said mandrel 4.
- the modules M1 to M8 are arranged in staggered rows and in opposition along the forming mandrel 4 for shifting the strips of material 2a to 2h one in two of 180 °, these strips being arranged in opposition two by two with respect to the longitudinal axis A.
- the manufacturing method according to the invention allows the manufacture of an infinite variety of tubular sections, some non-exhaustive examples are illustrated in Figures 1A to 1J. To facilitate the understanding of these figures, the strips of material are exaggeratedly spaced and the scale is not respected.
- the tubular section shown in FIG. 1A is obtained with four strips of partial material 20 which have a width corresponding to three sides of the rectangular forming mandrel 4, ie one of the long sides and the two short sides, and are applied head-on. spade with an offset of 180 ° between each band so that they are arranged in opposition two by two, symmetrically relative to one another with respect to the longitudinal axis A of the forming mandrel 4.
- the over-widths of the strips partial materials 20 are superimposed and assembled intimately to obtain a tubular section having a symmetrical structure with respect to its longitudinal axis A, said wall 6, of non-constant thickness comprises two small opposite sides 60 having a thickness ej_ double to that e2 of the two large opposite sides 61.
- the tubular section thus obtained has a peripheral wall 6 and continuous whose short sides 60 are reinforced thus offering great resistance to crushing.
- the tubular section 1b differs from that illustrated in FIG. 1A in that it furthermore comprises a complete inner material strip 18, and a complete outer material strip 19 having each width is substantially equal to the developed forming mandrel 4.
- the internal material strip 18 is applied during the first step of manufacturing the tubular section lb and forms the inner face 3 of the continuous tubular section lb which allows in particular to facilitate the sliding of the tubular section 1b during manufacture along the forming mandrel 4.
- the outer material strip complete 19 is applied during the last step of manufacturing the tubular section lb and forms the outer face 5 of the tubular section 1 and may, where appropriate, constitute a label or the like.
- This example also shows the possibility of producing an asymmetrical tubular section lb in which two of the opposite sides 61 have different thicknesses e2 and e_3 because of an odd number of strips of partial material 20 used.
- the tubular section is different from that illustrated in FIG. 1A by the fact that it further comprises a complete outer material strip 19 having a width substantially equal to that of the mandrel forming 4, applied during the last step of manufacturing the tubular section 1c and forming the outer face 5 of the tubular section that can take the place of a label as in the variant illustrated in Figure 1B.
- the tubular section 1d illustrated in FIG. 1D comprises, like that illustrated in FIG. 1B, an internal material strip 18. It then comprises two partial material strips 20 in opposition and a strip of double complex material 21 formed by means of two same partial strips of material 20 superimposed and not angularly offset relative to each other.
- the tubular section 1 d obtained is asymmetrical as that of FIG. 1B, in which two of the opposite sides 61 have different thicknesses e2 and e3 because of an odd number of strips of partial material 20 used.
- the tubular section illustrated in FIG. 1E differs from that shown in FIG. 1A in that the strips of material 2 are all double complex partial material strips 21 each formed by means of two identical partial material strips 20. superimposed and not offset angularly relative to each other.
- the tubular section 1f of FIG. 1F has a construction identical to that of FIG. 1A but has an asymmetrical section, namely a substantially rectangular section provided with a cut-off angle 62, to create, for example, a chamfer or an inclined ramp facilitating sliding.
- FIGS. 1H to 1J illustrate three other embodiments of a rectangular tubular section 1h with two sides 60 reinforced with respect to the two other sides 61, according to FIGS. 1A to 1E, obtained with strips of material 22, 23 previously wider than the width shaped on the forming mandrel, 4.
- the 1h tubular section of FIG. 1H is obtained from two double complex material strips 22, each strip being the result of a strip of double width material folded in two in the longitudinal direction. These two strips of double-complex material 22 are identical, oppositely disposed with respect to the axis A as shown in Figure 1A and are used to achieve the same tubular section 1A, to ⁇ namely a rectangular section comprising two sides 61 reinforced whose The thickness e1 is double with respect to the thickness e2 of the two other sides 60.
- the tubular section li of FIG. II differs from that of FIG. 1H in that the two complex material strips 23 are partially doubled, namely that they are each obtained from a band of wider material whose longitudinal edges are folded to form extra thicknesses.
- the tubular section 1 i obtained comprises two reinforced sides 61 whose thickness el is four times greater than the thickness e2 of the other two sides 60.
- the tubular section 1j of FIG. 1J is similar to that of FIG. except that the complex material strips 23 are used upside down from the previous ones.
- the manufacturing method according to the invention also makes it possible to produce tubular sections whose wall 6 comprises a constant thickness ej_, according to the example illustrated with reference to FIG. 1 G.
- the tubular section 1 g of FIG. 1 G is obtained from four partial material strips 20, that is to say whose width is greater than the half-developed of the forming mandrel 4, arranged in opposition two by two with respect to the axis A and offset between each layer of 90 °.
- FIGS. 1A to 1J have a parallelepipedal section, the present method could be implemented in a similar manner to manufacture a tubular section having various and varied geometrical or any symmetrical or non-symmetrical sections having a wall of constant thickness or not.
- the tubular sections 1a and 1b to 1b whose wall 6 comprises two opposite sides 60 whose thickness is doubled or even quadrupled relative to the other two sides 61 is advantageously characterized by improved mechanical strength properties, allowing it in particular to limit or even avoid any crushing deformation in the direction of the arrow F or bending along the longitudinal axis of the profile.
- tubular section 1a Due to its mechanical properties, the tubular section 1a according to the invention lends itself perfectly to use for many applications in various and varied sectors. It can in particular be used to manufacture a transport pallet 8, 80, 81 as illustrated in FIGS. 3 to 5, comprising a load-bearing tray 1 1 connected to a support pad 12 by spacers 13, 14. 1 1 carrying pallets transport pallets 8, 80, 81 is formed of a plurality of tubular sections according to the invention of parallelepipedal section, for example the tubular section la of Figure 1A whose short sides 60 are reinforced, used as planks, cut to the desired length and extending parallel in a horizontal plane with a spacing that may be regular or not.
- the tubular section la of Figure 1A whose short sides 60 are reinforced, used as planks, cut to the desired length and extending parallel in a horizontal plane with a spacing that may be regular or not.
- these profiles 1a of the load-bearing tray 1 1 are intimately joined, for example by bonding, to other complementary shapes oriented perpendicularly to form a rigid grid structure.
- the profiles 1a of the load-bearing tray 1 1 are assembled directly directly to the spacers 14.
- the support sole 12 is formed of three parallel skis, obtained by three tubular sections la, parallelepipedal section, cut to the desired length, arranged parallel to each other, in a parallel plane and located below the load plate 1 1. They are intimately assembled to the tray-holder load 1 1 by the spacers 13, 14.
- the spacers 13, 14 may each be formed by at least one tubular section with square section, rectangular (see Fig. 3 and 4), circular (see Fig. 5) or other disposed in a vertical plane, between the load-bearing tray 1 1 and the bearing flange 12.
- the spacers 13 of the pallets 8, 80 are obtained by the juxtaposition of several sections of tubular sections, for example but not necessarily the same section la that for the load plate 1 1 and the sole 12. These section sections are assembled intimately face to face to obtain spacers 13 thicker, substantially square, and therefore particularly strong, extremely rigid compression, helping to improve the robustness of the transport pallet 8, 80, becoming able to withstand heavy loads.
- the spacers 13 are assembled to the profiles 1a of the load-carrying tray 1 1 and of the sole 12 by plane contact and connected by a bead of adhesive or any similar connecting means.
- the spacers 13 are nested in a recess 15 arranged in the profiles 1a of the load carrier 1 1 and bonded by bonding or any similar method.
- the spacers 14 comprise a recess 16 for fitting on the profiles 1a of the load-bearing tray 1 1 and the sole 12 and also bonded by bonding or any equivalent method. This demonstrates the different possibilities of assembly between the different profiles to obtain a mechanically rigid structure.
- the interlocking assembly as shown in the pallets 80 and 81 makes it possible to avoid complex and costly machining of tubular sections such as drilling, cutting, stamping, etc. conventionally necessary for the introduction of the spacers 13, 14, which makes it possible to avoid the zones of rupture which may weaken the pallet, and to facilitate the manufacture of such a transport pallet 8, 80, 81 by an automated method or semi-automated.
- Figures 6 and 7 show respectively a load carrier 1 1 only and sole ski 12 alone, forming finished products ready for use for various applications. This demonstrates the flexibility of use of the tubular sections of the invention.
- the present invention also provides a use of the tubular sections la Ij obtained by the method of the invention for the manufacture of any other product, in part or in whole, such as including a package, a piece of furniture, a easel, a tray, a technical duct, a ventilation duct, etc.
- the invention achieves the goals set, namely to provide a continuous type of manufacturing process tubular sections of any section, fast, economical, scalable and flexible.
- the tubular section 1a obtained by the implementation of the present process has improved mechanical properties allowing it to be used to make many products requiring strength and robustness.
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Abstract
The invention relates to a method for manufacturing a tubular profile member (1a), particularly made of cardboard, by stacking and tightly assembling a plurality of material strips (2) forming a multilayer wall, in which the material strips (2) are unrolled one after the other in a longitudinal direction corresponding to a longitudinal axis A of said tubular profile member (1), and are shaped around a longitudinal shaping mandrel having a surface defining the inner section of said profile member. The method is characterized in that, in order to produce at least one of the layers forming the wall (6), at least two partial strips (20), having a greater width than the half-surface of the shaping mandrel (4) and arranged opposite the longitudinal axis A, are used, thus making it possible to produce tubular profile members, the wall of which has separate reinforced layers.
Description
PROCEDE DE FABRICATION D'UN PROFILE TUBULAIRE. PROFILE TUBULAIRE OBTENU ET UTILISATION DUDIT PROFILE TUBULAIRE PROCESS FOR PRODUCING A TUBULAR PROFILE TUBULAR PROFILE OBTAINED AND USE OF THE TUBULAR PROFILE
Domaine technique : Technical area :
La présente invention concerne un procédé de fabrication d'un profilé tubulaire en carton, matériau composite ou similaire, par superposition et assemblage intime d'une pluralité de bandes de matière formant une paroi multicouche, dans lequel on déroule dans un sens longitudinal correspondant à un axe longitudinal A dudit profilé tubulaire au moins une première bande de matière destinée à former au moins en partie la face intérieure dudit profilé tubulaire, on la met en forme autour d'un mandrin de formage longitudinal présentant un développé agencé pour définir la section intérieure dudit profilé tubulaire, on répète ces opérations de déroulage et de mise en forme pour chaque bande de matière jusqu'à la dernière bande de matière destinée à former au moins en partie la face extérieure dudit profilé tubulaire, en décalant angulairement au moins certaines desdites bandes de matière entre elles pour former un tube fermé et en assemblant intimement lesdites bandes de matière entre elles au fur et à mesure de leur mise en forme. Elle concerne également un profilé tubulaire obtenu par ce procédé et l'utilisation dudit profilé tubulaire pour la fabrication d'un produit fini tel que notamment une palette de transport. The present invention relates to a method of manufacturing a tubular section made of cardboard, composite material or the like, by superimposing and intimately assembling a plurality of strips of material forming a multilayer wall, in which is unrolled in a longitudinal direction corresponding to a longitudinal axis A of said tubular section at least a first strip of material intended to form at least partly the inner face of said tubular section, it is shaped around a longitudinal forming mandrel having a developed arranged to define the inner section of said tubular section, these unwinding and forming operations are repeated for each strip of material to the last strip of material intended to form at least partly the outer face of said tubular section, angularly shifting at least some of said strips of material. between them to form a closed tube and by intimately assembling the say strips of matter between them as and when they are formatted. It also relates to a tubular section obtained by this method and the use of said tubular section for the manufacture of a finished product such as in particular a pallet transport.
Technique antérieure : Prior art:
La fabrication de profilés tubulaires cylindriques ou non, en carton, matériau composite ou similaire, s'effectue à l'heure actuelle selon divers procédés bien connus par l'homme du métier. The manufacture of tubular profiles cylindrical or not, cardboard, composite material or the like, is currently carried out according to various methods well known to those skilled in the art.
Un procédé dit "discontinu" consiste à enrouler une bande de matière, dont la laize correspond à la longueur du profilé tubulaire à réaliser, autour d'un mandrin de formage rotatif et dont la section correspond à celle du profilé tubulaire à former.
Cette bande de matière est enroulée parallèlement à l'axe du mandrin, dont le nombre de tours effectués détermine l'épaisseur finale de la paroi du profilé tubulaire. Ce procédé présente les inconvénients inhérents aux procédés discontinus, à savoir notamment la nécessité de démarrer et d'arrêter la machine pour chaque profilé tubulaire réalisé, d'où une fatigue machine importante, un processus relativement lent et un prix de revient élevé, mais permet de réaliser des profilés tubulaires à la demande. La longueur des profilés est toutefois limitée à la largeur de la laize de matière et les profilés de petites sections ou de faibles diamètres sont difficiles à réaliser avec ce type de procédé. A so-called "discontinuous" process consists of winding a strip of material, whose width corresponds to the length of the tubular section to be produced, around a rotary forming mandrel and whose section corresponds to that of the tubular profile to be formed. This strip of material is wound parallel to the axis of the mandrel, whose number of turns made determines the final thickness of the wall of the tubular section. This method has the drawbacks inherent to discontinuous processes, namely in particular the need to start and stop the machine for each tubular profile produced, resulting in significant machine fatigue, a relatively slow process and a high cost, but allows to produce tubular profiles on demand. The length of the profiles is, however, limited to the width of the width of material and the profiles of small sections or small diameters are difficult to achieve with this type of process.
Un procédé dit "continu" consiste à enrouler plusieurs bandes de matière superposées avec un décalage en spirale autour d'un mandrin de formage rotatif puis à tronçonner le profilé tubulaire continu obtenu à la longueur souhaitée. Malgré le fait qu'il s'agisse d'un procédé continu ne présentant pas les inconvénients des procédés discontinus, il ne donne pas davantage entière satisfaction, car son application est dédiée aux profilés cylindriques. Dès lors que l'on souhaite réaliser des profilés polygonaux, ce procédé est très lent- et son coût prohibitif. A so-called "continuous" process consists of winding several superimposed webs of material with a spiral offset around a rotating forming mandrel and then cutting the continuous tubular section obtained to the desired length. Despite the fact that it is a continuous process that does not have the disadvantages of discontinuous processes, it does not give further satisfaction, because its application is dedicated to cylindrical profiles. Since it is desired to produce polygonal profiles, this process is very slow and prohibitively expensive.
On connaît par ailleurs un autre procédé continu performant, dans lequel les bandes de papier sont déroulées longitudinalement et mises en forme autour d'un mandrin de formage longitudinal fixe, le profilé tubulaire continu obtenu étant tronçonné à la longueur souhaitée. Néanmoins, ce procédé est limité à la fabrication de profilés tubulaires de faibles épaisseurs et de relatives petites sections, cette restriction étant notamment due à la largeur des laizes qui nuirait à l'encombrement en largeur et en longueur de la machine. Les profilés obtenus sont principalement destinés à la réalisation de boîte de conditionnement pour l'industrie alimentaire. Ce type de procédé est par exemple décrit dans la publication FR 2 702 414. Also known is another high performance continuous process, in which the paper strips are unwound longitudinally and shaped around a fixed longitudinal forming mandrel, the resulting continuous tubular profile being cut to the desired length. Nevertheless, this process is limited to the manufacture of tubular sections of small thicknesses and relative small sections, this restriction being in particular due to the width of the widths which would be detrimental to the overall width and length of the machine. The profiles obtained are mainly intended for the realization of packaging box for the food industry. This type of process is for example described in publication FR 2 702 414.
Les publications EP 0 387 171 et GB 2 000 105 décrivent des procédés de fabrication d'un corps de boîte à partir de demi-bandes de matière ayant une largeur égale à la
moitié du développé d'un mandrin de formage longitudinal, ces demi-bandes étant disposées en opposition autour dudit mandrin de formage pour former des profilés tubulaires dont la paroi périphérique a une épaisseur constante. Ainsi, il n'existe pas à ce jour de procédé continu permettant de fabriquer des profilés tubulaires dont la paroi périphérique n'a pas nécessairement une épaisseur constante en vue de créer notamment des zones renforcées selon l'utilisation desdits profilés. EP 0 387 171 and GB 2 000 105 disclose methods of making a can body from half strips of material having a width equal to half of the developed a longitudinal forming mandrel, these half-strips being disposed in opposition around said forming mandrel to form tubular sections whose peripheral wall has a constant thickness. Thus, there is as yet no continuous process for manufacturing tubular sections whose peripheral wall does not necessarily have a constant thickness to create particular reinforced areas according to the use of said profiles.
Exposé de l'invention : Presentation of the invention
La présente invention vise à apporter une solution aux problèmes évoqués ci-dessus en proposant un procédé continu pour la fabrication de profilés tubulaires de dimensions, d'épaisseurs et de sections quelconques, en superposant et en assemblant intimement une pluralité de bandes de matière, de manière rapide, fiable et économique, au moyen d'une machine dont l'encombrement n'a pas besoin d'être surdimensionné. Un autre but de l'invention est encore de proposer un tel procédé de fabrication qui soit également évolutif et flexible. L'invention vise également à proposer un profilé tubulaire de qualité offrant des performances mécaniques élevées et permettant d'être utilisé pour diverses applications dans des secteurs variés tels que le transport, l'emballage, le mobilier, le bâtiment, l'industrie, etc. The present invention aims to provide a solution to the problems mentioned above by proposing a continuous process for the manufacture of tubular sections of any size, thickness and section, by superimposing and intimately joining a plurality of strips of material, fast, reliable and economical way, by means of a machine whose size does not need to be oversized. Another object of the invention is still to provide such a manufacturing method which is also scalable and flexible. The invention also aims to provide a quality tubular profile with high mechanical performance and to be used for various applications in various sectors such as transport, packaging, furniture, building, industry, etc. .
Dans ce but, l'invention concerne un procédé de fabrication du genre indiqué en préambule, caractérisé en ce que l'on utilise, pour au moins une partie des bandes de matière, au moins deux bandes partielles dont la largeur est supérieure au demi développé du mandrin de formage pour créer des sur-largeurs, l'on déroule lesdites bandes de matière partielles de sorte à les disposer en opposition par rapport audit axe longitudinal A, l'on met en forme lesdites bandes partielles autour dudit mandrin de formage pour former au moins une couche dudit profilé tubulaire, l'on superpose les sur-largeurs desdites bandes partielles et on les assemble intimement.
On peut utiliser, pour au moins une partie des bandes de matière, deux bandes partielles de même largeur que l'on superpose pour former une bande double, une bande complexe constituée d'un assemblage de plusieurs matières, une bande pliée en deux dans le sens longitudinal pour former une bande doublée, ou encore une bande dont les bords longitudinaux sont pliés pour former une bande partiellement doublée. For this purpose, the invention relates to a method of manufacture of the kind indicated in the preamble, characterized in that at least a portion of the strips of material are used, at least two partial strips whose width is greater than half developed of the forming mandrel to create over-widths, said partial material webs are unwound so as to arrange them in opposition to said longitudinal axis A, said partial strips are shaped around said forming mandrel to form at least one layer of said tubular section, the over-widths of said partial strips are superimposed and assembled intimately. At least a portion of the strips of material may be used with two partial strips of the same width that are superimposed to form a double strip, a complex strip consisting of an assembly of several materials, a strip folded in half in the longitudinal direction to form a doubled strip, or a strip whose longitudinal edges are folded to form a partially doubled strip.
On peut réaliser au moins deux couches dudit profilé tubulaire avec lesdites bandes partielles pourvues de sur-largeurs sans les décaler, angulairement d'une couche à l'autre de sorte que les sur-largeurs se superposent d'une couche à l'autre pour créer des zones renforcées dans la paroi dudit profilé tubulaire, ou en les décalant angulairement de 90° d'une couche à l'autre pour créer un profilé tubulaire de paroi d'épaisseur constante. Dans ce but, l'invention concerne également un profilé tubulaire obtenu selon le procédé de fabrication décrit ci-dessus, ce profilé pouvant être utilisé notamment pour la fabrication en partie ou en totalité de palettes de transport, d'emballages, de meubles, de chevalets, de plateaux, de gaines techniques, de conduits de ventilation, etc. At least two layers of said tubular section can be made with said partial strips provided with over-widths without shifting them angularly from one layer to another so that the over-widths are superimposed from one layer to the other for creating reinforced zones in the wall of said tubular section, or by shifting them angularly by 90 ° from one layer to another to create a tubular wall section of constant thickness. For this purpose, the invention also relates to a tubular section obtained according to the manufacturing method described above, this section can be used in particular for the manufacture in part or in full of pallets transport, packaging, furniture, trestles, trays, ducts, ventilation ducts, etc.
Description sommaire des dessins : Brief description of the drawings:
La présente invention et ses avantages apparaîtront mieux dans la description suivante de plusieurs modes de réalisation donnés à titre d'exemples non limitatifs, en référence aux dessins annexés, dans lesquels: The present invention and its advantages will appear better in the following description of several embodiments given as non-limiting examples, with reference to the appended drawings, in which:
les figures 1A à 1J représentent des vues en coupe de différentes variantes de réalisation d'un profilé tubulaire selon l'invention, FIGS. 1A to 1J show sectional views of various alternative embodiments of a tubular section according to the invention,
la figure 2 est une vue schématique d'une partie de la ligne de fabrication permettant d'obtenir les différentes variantes de réalisation du profilé tubulaire selon l'invention illustrées aux figures 1A à 1J,
la figure 3 est une vue en perspective d'une première forme de réalisation d'une palette de transport obtenue par l'utilisation d'au moins un des profilés tubulaires des figures 1A et 1J, FIG. 2 is a diagrammatic view of a part of the production line making it possible to obtain the various embodiments of the tubular section according to the invention illustrated in FIGS. 1A to 1J, FIG. 3 is a perspective view of a first embodiment of a transport pallet obtained by the use of at least one of the tubular sections of FIGS. 1A and 1J,
la figure 4 est une vue en perspective d'une deuxième forme de réalisation d'une palette de transport obtenue par l'utilisation d'au moins un des profilés tubulaires des figures 1A et 1 J, FIG. 4 is a perspective view of a second embodiment of a transport pallet obtained by the use of at least one of the tubular sections of FIGS. 1A and 1J,
la figure 5 est une vue en perspective d'une troisième forme de réalisation d'une palette de transport obtenue par l'utilisation d'au moins un des profilés tubulaires des figures 1A à 1J et de profilés à section circulaire, FIG. 5 is a perspective view of a third embodiment of a transport pallet obtained by the use of at least one of the tubular sections of FIGS. 1A to 1J and circular section profiles,
- la figure 6 est une vue en perspective d'un plateau obtenu par l'utilisation d'au moins un des profilés tubulaires des figures 1A à 1J et pouvant constituer le plateau porte-charge d'une palette de transport, et FIG. 6 is a perspective view of a plate obtained by the use of at least one of the tubular sections of FIGS. 1A to 1J and which can constitute the load plate of a transport pallet, and
la figure 7 est une vue en perspective d'un ski obtenu par l'utilisation d'au moins un des profilés tubulaires des figures 1A à 1J et pouvant être associé au plateau de la figure 6 pour constituer une partie de la semelle et des entretoises d'une palette de transport. FIG. 7 is a perspective view of a ski obtained by the use of at least one of the tubular sections of FIGS. 1A to 1J and which can be associated with the plate of FIG. 6 to constitute a part of the sole and spacers. a transport pallet.
Illustrations de l'invention et différentes manières de la réaliser : La présente invention a pour objet un procédé de fabrication de type "continu" de profilés tubulaires de section quelconque, pouvant être parallélépipédiques, circulaires, polygonales, géométriques ou quelconques selon l'application finale visée et les caractéristiques techniques qu'ils doivent respecter. Tel qu'illustré aux figures 1A à 1J et 2, le procédé selon l'invention prévoit de fabriquer un profilé tabulaire la à Ij par exemple en carton, matériau composite ou analogue, par superposition et assemblage intime d'une pluralité de bandes de matière 2, telle que notamment du papier, du papier kraft, un complexe multicouche de papier revêtu d'un film plastique et/ou d'aluminium ou similaire pour conférer à la bande de matière des propriétés barrières et/ou d'étanchéité, du papier traité par
imprégnation ou similaire pour conférer à la bande de matière des propriétés hydrophobes, anti moisissure, etc. Cette liste n'est bien entendu pas exhaustive et s'étend à toutes les matières naturelles, artificielles, synthétiques et composites pouvant être mises en forme pour fabriquer des profilés tubulaires conformément au procédé de l'invention par superposition et assemblage intime d'au moins deux bandes de matière 2. On entend par assemblage intime le collage, la soudure, et tout procédé similaire. Illustrations of the invention and various ways of carrying it out: The subject of the present invention is a process for the "continuous" type manufacture of tubular sections of any cross-section, which may be parallelepipedic, circular, polygonal, geometric or arbitrary depending on the final application. and the technical characteristics they must respect. As illustrated in FIGS. 1A to 1J and 2, the method according to the invention provides for the manufacture of a tubular section 1a, for example of cardboard, composite material or the like, by superimposition and intimate assembly of a plurality of strips of material. 2, such as in particular paper, kraft paper, a multilayered complex of paper coated with a plastic film and / or aluminum or the like to give the material web barrier and / or sealing properties, paper treated by impregnation or the like to give the material web hydrophobic properties, anti-mold, etc. This list is of course not exhaustive and extends to all natural, artificial, synthetic and composite materials that can be shaped to manufacture tubular sections according to the process of the invention by superimposition and intimate assembly of at least two strips of material 2. By intimate assembly is meant bonding, welding, and any similar process.
Le procédé de fabrication d'un profilé tubulaire la à lj prévoit les étapes suivantes en référence à la ligne de fabrication 40 selon la figure 2 : The method of manufacturing a tubular section 1a to 1j provides the following steps with reference to the production line 40 according to FIG. 2:
- on déroule dans un sens longitudinal correspondant à un axe longitudinal A du profilé tubulaire au moins une première bande de matière 2a destinée à former, au moins en partie la face intérieure 3 du profilé tubulaire la à lj, in a longitudinal direction corresponding to a longitudinal axis A of the tubular section, at least a first strip of material 2a intended to form, at least in part, the inner face 3 of the tubular section 1a to 1j, is unrolled,
- on la met en forme autour d'un mandrin de formage 4 longitudinal présentant un développé agencé pour définir la section intérieure du profilé tubulaire la à lj, et - It is shaped around a longitudinal forming mandrel 4 having a developed arranged to define the inner section of the tubular section la to lj, and
- on répète ces opérations de déroulage et de mise en forme pour chaque bande de matière 2b à 2h jusqu'à la dernière bande de matière 2h destinée à former au moins en partie la face extérieure 5 du profilé tubulaire la à lj, en décalant angulairement au moins certaines desdites bandes de matière 2a à 2h entre elles pour former un tube fermé et en assemblant intimement lesdites bandes de matière 2a à 2h entre elles au fur et à mesure de leur mise en forme. these unwinding and forming operations are repeated for each strip of material 2b at 2h until the last strip of material 2h intended to form at least partly the outside face 5 of the tubular section 1a1j, by angularly shifting at least some of said strips of material 2a to 2h between them to form a closed tube and intimately assembling said strips of material 2a to 2h between them as and when they are shaped.
Le procédé de fabrication selon l'invention se distingue de l'état de l'art en ce que, pour réaliser une, plusieurs, voire toutes les couches formant la paroi 6 du profilé tubulaire la à lj, on utilise au moins deux bandes partielles 20 présentant une largeur inférieure au développé du mandrin de formage 4 et disposées en opposition par rapport à l'axe longitudinal A. Dans les exemples de profilé tubulaire la à lf et lh à lj, selon les figures 1A à 1F et 1H à 1J, on a utilisé des bandes partielles présentant une largeur supérieure au demi-développé du mandrin de formage 4 pour créer des sur-largeurs sur leurs cotés longitudinaux qui se superposent au moment de leur mise
en forme afin de créer des zones renforcées dans le profilé obtenu ayant une épaisseur el supérieure à l'épaisseur e2 des autres zones. Ces zones renforcées offrent par conséquent des caractéristiques techniques différentes et notamment une plus grande résistance à la compression autorisant des applications nouvelles pour un profilé à base de carton. The manufacturing method according to the invention differs from the state of the art in that, to make one, more or all of the layers forming the wall 6 of the tubular section 1a to 1j, at least two partial strips are used. 20 having a width smaller than the developed forming mandrel 4 and arranged in opposition to the longitudinal axis A. In the examples of tubular section 1a to 1f and 1h to 1j, according to Figures 1A to 1F and 1H to 1J, Partial strips having a width greater than half-developed of the forming mandrel 4 have been used to create over-widths on their longitudinal sides which are superimposed at the moment of their placing. shaped to create reinforced areas in the resulting section having a thickness el greater than the thickness e2 of other areas. These reinforced areas therefore offer different technical characteristics and in particular greater compressive strength allowing new applications for a board-based section.
Conformément à la figure 2 qui représente une partie de la ligne de fabrication 40, la mise en forme des bandes de matière 2 autour du mandrin de formage 4 est effectuée par des pièces de formage 42 disposées autour dudit mandrin de formage 4 pour rabattre progressivement les parties correspondantes des bandes de matière 2 contre les parois du mandrin de formage 4. Ces pièces de formage 42 peuvent être constituées de galets roulants ou de conformateurs fixes ou similaires. Préalablement, les bandes . de matière 2 sont encollées sur leur trajet entre le dévidoir (non représenté) et le mandrin de formage 4 par un dispositif d'encollage 41. Lorsque la première bande de matière 2a est mise en forme autour du mandrin de formage 4, la deuxième bande de matière 2b est encollée puis mise en forme autour dudit mandrin de formage 4 en se superposant à la première bande de matière 2a, et ainsi de suite autant de fois qu'il y a de bandes de matières 2a à 2h à superposer. Ainsi, pour mettre en œuvre le procédé selon l'invention, la ligne de fabrication 40 comporte un nombre de modules Ml à M8 correspondant au nombre de bandes 2a à 2h à superposer pour former ledit profilé tubulaire la à lj, chaque module pouvant être constitué d'un dévidoir, d'un dispositif d'encollage 41 , de galets de détour et de pièces de formage 42. Des systèmes d'entraînement (non représentés) sont disposés le long du mandrin de formage 4 entre certains modules Ml à M8 pour entraîner positivement le profilé tubulaire en cours de formation axialement le long dudit mandrin 4. Dans l'exemple représenté, les modules Ml à M8 sont disposés en quinconce et en opposition le long du mandrin de formage 4 permettant de décaler les bandes de matière 2a à 2h une sur deux de 180°, ces bandes étant disposées en opposition deux à deux par rapport à l'axe longitudinal A. Bien entendu, il est possible de disposer ces modules Ml à M8
différemment, notamment en angle droit pour créer un décalage de 90° entre les bandes de matière 2a à 2h. According to FIG. 2, which represents a part of the production line 40, the shaping of the material strips 2 around the forming mandrel 4 is carried out by forming parts 42 arranged around said forming mandrel 4 in order to progressively lower the corresponding parts of the material strips 2 against the walls of the forming mandrel 4. These forming parts 42 may consist of rollers or fixed or similar shapers. Previously, the bands. of material 2 are glued in their path between the reel (not shown) and the forming mandrel 4 by a sizing device 41. When the first material web 2a is shaped around the forming mandrel 4, the second web of material 2b is glued and then shaped around said forming mandrel 4 by superimposing on the first material strip 2a, and so on as many times as there are strips of material 2a to 2h to superimpose. Thus, to implement the method according to the invention, the manufacturing line 40 comprises a number of modules M1 to M8 corresponding to the number of strips 2a to 2h to be superimposed to form said tubular section 1a to 1j, each module can be constituted of a reel, a sizing device 41, diverting rollers and forming parts 42. Drive systems (not shown) are arranged along the forming mandrel 4 between certain modules M1 to M8 for positively cause the tubular profile being formed axially along said mandrel 4. In the example shown, the modules M1 to M8 are arranged in staggered rows and in opposition along the forming mandrel 4 for shifting the strips of material 2a to 2h one in two of 180 °, these strips being arranged in opposition two by two with respect to the longitudinal axis A. Of course, it is possible to arrange these modules Ml to M8 differently, especially at right angles to create a shift of 90 ° between the strips of material 2a to 2h.
Le procédé de fabrication selon l'invention permet la fabrication d'une variété infinie de profilés tubulaires dont certains exemples non exhaustifs sont illustrés aux figures 1A à 1J. Pour faciliter la compréhension de ces figures, les bandes de matière sont exagérément espacées et l'échelle n'est pas respectée. The manufacturing method according to the invention allows the manufacture of an infinite variety of tubular sections, some non-exhaustive examples are illustrated in Figures 1A to 1J. To facilitate the understanding of these figures, the strips of material are exaggeratedly spaced and the scale is not respected.
Le profilé tubulaire la illustré à la figure 1A est obtenu avec quatre bandes de matière .partielles 20 qui ont une largeur correspondant à trois cotés du mandrin de formage 4 rectangulaire, soit un des grands cotés et les deux petits cotés, et sont appliquées tête-bêche avec un décalage de 180° entre chaque bande de sorte qu'elles sont disposées en opposition deux à deux, symétriquement les unes par rapport aux autres par rapport à l'axe longitudinal A du mandrin de formage 4. Les sur-largeurs des bandes de matière partielles 20 sont superposées et assemblées intimement pour obtenir un profilé tubulaire la présentant une structure symétrique par rapport à son axe longitudinal A, dont ladite paroi 6, d'épaisseur non constante comporte deux petits côtés opposés 60 ayant une épaisseur ej_ double à celle e2 des deux grands côtés opposés 61. Le profilé tubulaire la ainsi obtenu comporte une paroi 6 périphérique et continue dont les petits côtés 60 sont renforcés offrant ainsi une grande résistance à l'écrasement. The tubular section shown in FIG. 1A is obtained with four strips of partial material 20 which have a width corresponding to three sides of the rectangular forming mandrel 4, ie one of the long sides and the two short sides, and are applied head-on. spade with an offset of 180 ° between each band so that they are arranged in opposition two by two, symmetrically relative to one another with respect to the longitudinal axis A of the forming mandrel 4. The over-widths of the strips partial materials 20 are superimposed and assembled intimately to obtain a tubular section having a symmetrical structure with respect to its longitudinal axis A, said wall 6, of non-constant thickness comprises two small opposite sides 60 having a thickness ej_ double to that e2 of the two large opposite sides 61. The tubular section thus obtained has a peripheral wall 6 and continuous whose short sides 60 are reinforced thus offering great resistance to crushing.
Dans la variante de réalisation illustrée à la figure 1B, le profilé tubulaire lb se différencie de celui illustré à la figure 1A par le fait qu'il comporte en outre une bande de matière interne complète 18, et une bande de matière externe complète 19 ayant chacune une largeur sensiblement égale au développé du mandrin de formage 4. La bande de matière interne 18 est appliquée au cours de la première étape de fabrication du profilé tubulaire lb et forme la face intérieure 3 du profilé tubulaire lb continue qui permet notamment de faciliter le glissement du profilé tubulaire 1 b en cours de fabrication le long du mandrin de formage 4. La bande de matière externe
complète 19 est appliquée au cours de la dernière étape de fabrication du profilé tubulaire lb et forme la face extérieure 5 du profilé tubulaire 1 et peut, le cas échéant, constituer une étiquette ou similaire. Cet exemple montre également la possibilité de réaliser un profilé tubulaire lb dissymétrique dans lequel deux des côtés opposés 61 ont des épaisseurs e2 et e_3 différentes du fait d'un nombre impair de bandes de matière partielles 20 utilisé. In the variant embodiment illustrated in FIG. 1B, the tubular section 1b differs from that illustrated in FIG. 1A in that it furthermore comprises a complete inner material strip 18, and a complete outer material strip 19 having each width is substantially equal to the developed forming mandrel 4. The internal material strip 18 is applied during the first step of manufacturing the tubular section lb and forms the inner face 3 of the continuous tubular section lb which allows in particular to facilitate the sliding of the tubular section 1b during manufacture along the forming mandrel 4. The outer material strip complete 19 is applied during the last step of manufacturing the tubular section lb and forms the outer face 5 of the tubular section 1 and may, where appropriate, constitute a label or the like. This example also shows the possibility of producing an asymmetrical tubular section lb in which two of the opposite sides 61 have different thicknesses e2 and e_3 because of an odd number of strips of partial material 20 used.
Dans la variante de réalisation illustrée à la figure 1C, le profilé tubulaire le se différencie de celui illustré à la figure 1A par le fait qu'il comporte en outre une bande de matière externe complète 19 ayant une largeur sensiblement égale au développé du mandrin de formage 4, appliquée au cours de la dernière étape de fabrication du profilé tubulaire le et formant la face extérieure 5 du profilé tubulaire le pouvant tenir lieu d'étiquette comme dans la variante illustrée à la figure 1B. Le profilé tubulaire ld illustré à la figure 1D comporte, à l'instar de celui illustré à la figure 1B, une bande de matière interne 18. Il comporte ensuite deux bandes de matière partielles 20 en opposition et une bande de matière complexe double 21 formée au moyen de deux mêmes bandes de matière partielles 20 superposées et non décalées angulairement l'une par rapport à l'autre. Le profilé tubulaire 1 d obtenu est dissymétrique comme celui de la figure 1B, dans lequel deux des côtés opposés 61 ont des épaisseurs e2 et e3 différentes du fait d'un nombre impair de bandes de matière partielles 20 utilisé. In the variant embodiment illustrated in FIG. 1C, the tubular section is different from that illustrated in FIG. 1A by the fact that it further comprises a complete outer material strip 19 having a width substantially equal to that of the mandrel forming 4, applied during the last step of manufacturing the tubular section 1c and forming the outer face 5 of the tubular section that can take the place of a label as in the variant illustrated in Figure 1B. The tubular section 1d illustrated in FIG. 1D comprises, like that illustrated in FIG. 1B, an internal material strip 18. It then comprises two partial material strips 20 in opposition and a strip of double complex material 21 formed by means of two same partial strips of material 20 superimposed and not angularly offset relative to each other. The tubular section 1 d obtained is asymmetrical as that of FIG. 1B, in which two of the opposite sides 61 have different thicknesses e2 and e3 because of an odd number of strips of partial material 20 used.
Le profilé tubulaire le illustré à la figure 1E se différencie de celui illustré à la figure 1A par le fait que les bandes de matière 2 sont toutes des bandes de matières partielles complexes doubles 21 formées chacune au moyen de deux bandes de matière partielles 20 identiques, superposées et non décalées angulairement l'une par rapport à l'autre.
Le profilé tubulaire lf de la figure 1 F a une construction identique à celui de la figure 1A mais présente une section asymétrique, à savoir une section sensiblement rectangulaire pourvue d'un angle coupé 62, pour créer par exemple un chanfrein ou une rampe inclinée facilitant le glissement. The tubular section illustrated in FIG. 1E differs from that shown in FIG. 1A in that the strips of material 2 are all double complex partial material strips 21 each formed by means of two identical partial material strips 20. superimposed and not offset angularly relative to each other. The tubular section 1f of FIG. 1F has a construction identical to that of FIG. 1A but has an asymmetrical section, namely a substantially rectangular section provided with a cut-off angle 62, to create, for example, a chamfer or an inclined ramp facilitating sliding.
Les figures 1H à 1J illustrent trois autres formes de réalisation d'un profilé tubulaire lh à lj rectangulaire pourvu de deux côtés 60 renforcés par rapport aux deux autres côtés 61, conformément aux figures 1A à 1 E, obtenus avec des bandes de matière 22, 23 préalablement plus larges que la largeur mise en forme sur le mandrin de formage , 4. FIGS. 1H to 1J illustrate three other embodiments of a rectangular tubular section 1h with two sides 60 reinforced with respect to the two other sides 61, according to FIGS. 1A to 1E, obtained with strips of material 22, 23 previously wider than the width shaped on the forming mandrel, 4.
Le profilé tubulaire 1 h de la figure 1H est obtenu à partir de deux bandes de matière complexes doubles 22, chaque bande étant le résultat d'une bande de matière de double largeur pliée en deux dans le sens longitudinal. Ces deux bandes de matière complexes doubles 22 sont identiques, disposées en opposition par rapport à l'axe A comme dans la figure 1A et permettent de réaliser le même profilé tubulaire 1A, à ■ savoir un profilé rectangulaire comportant deux côtés 61 renforcés dont l'épaisseur el_ est double par rapport à l'épaisseur e2 des deux autres côtés 60. Le profilé tubulaire li de la figure II se différencie de celui de la figure 1H par le fait que les deux bandes de matière complexes 23 sont partiellement doublées, à savoir qu'elles sont chacune obtenues à partir d'une bande de matière plus large dont les bords longitudinaux sont pliés pour former des surépaisseurs. Le profilé tubulaire 1 i obtenu comporte de fait deux côtés 61 renforcés dont l'épaisseur el est quatre fois supérieure à l'épaisseur e2 des deux autres côtés 60. Le profilé tubulaire lj de la figure 1J est similaire à celui de la figure I I, sauf que les bandes de matière complexes 23 sont utilisées à l'envers des précédentes.
Le procédé de fabrication selon l'invention permet de réaliser également des profilés tubulaires dont la paroi 6 comporte une épaisseur constante ej_, selon l'exemple illustré en référence à la figure 1 G. Le profilé tubulaire 1 g de la figure 1 G est obtenu à partir de quatre bandes de matière partielles 20, c'est à dire dont la largeur est supérieure au demi-développé du mandrin de formage 4, disposées en opposition deux à deux par rapport à l'axe A et décalées entre chaque couche de 90°. Bien que les variantes de réalisation illustrées aux figures 1A à 1J présentent une section parallélépipédique, le présent procédé pourrait être mis en oeuvre de manière similaire pour fabriquer un profilé tubulaire présentant des sections diverses et variées, géométriques ou quelconque, symétriques ou non, ayant une paroi d'épaisseur constante ou non. The 1h tubular section of FIG. 1H is obtained from two double complex material strips 22, each strip being the result of a strip of double width material folded in two in the longitudinal direction. These two strips of double-complex material 22 are identical, oppositely disposed with respect to the axis A as shown in Figure 1A and are used to achieve the same tubular section 1A, to ■ namely a rectangular section comprising two sides 61 reinforced whose The thickness e1 is double with respect to the thickness e2 of the two other sides 60. The tubular section li of FIG. II differs from that of FIG. 1H in that the two complex material strips 23 are partially doubled, namely that they are each obtained from a band of wider material whose longitudinal edges are folded to form extra thicknesses. The tubular section 1 i obtained comprises two reinforced sides 61 whose thickness el is four times greater than the thickness e2 of the other two sides 60. The tubular section 1j of FIG. 1J is similar to that of FIG. except that the complex material strips 23 are used upside down from the previous ones. The manufacturing method according to the invention also makes it possible to produce tubular sections whose wall 6 comprises a constant thickness ej_, according to the example illustrated with reference to FIG. 1 G. The tubular section 1 g of FIG. 1 G is obtained from four partial material strips 20, that is to say whose width is greater than the half-developed of the forming mandrel 4, arranged in opposition two by two with respect to the axis A and offset between each layer of 90 °. Although the variant embodiments illustrated in FIGS. 1A to 1J have a parallelepipedal section, the present method could be implemented in a similar manner to manufacture a tubular section having various and varied geometrical or any symmetrical or non-symmetrical sections having a wall of constant thickness or not.
Les profilés tubulaires la à lf et lh à lj dont la paroi 6 comporte deux côtés 60 opposés dont l'épaisseur est doublée, voire quadruplée, par rapport aux deux autres côtés 61 se caractérise avantageusement par des propriétés de résistance mécanique améliorées, lui permettant notamment de limiter, voire d'éviter toute éventuelle déformation par écrasement dans le sens de la flèche F ou flexion le long de l'axe longitudinal du profilé. The tubular sections 1a and 1b to 1b whose wall 6 comprises two opposite sides 60 whose thickness is doubled or even quadrupled relative to the other two sides 61 is advantageously characterized by improved mechanical strength properties, allowing it in particular to limit or even avoid any crushing deformation in the direction of the arrow F or bending along the longitudinal axis of the profile.
Grâce à ses propriétés mécaniques, le profilé tubulaire la à lj selon l'invention se prête parfaitement à une utilisation pour de nombreuses applications dans des secteurs divers et variés. Il peut notamment être utilisé pour fabriquer une palette de transport 8, 80, 81 telle qu'illustrée aux figures 3 à 5, comportant un plateau porte- charge 1 1 relié à une semelle d'appui 12 par des entretoises 13, 14. Le plateau porte- charge 1 1 des palettes de transport 8, 80, 81 est formé d'une pluralité de profilés tubulaires selon l'invention de section parallélépipédique, par exemple le profilé tubulaire la de la figure 1A dont les petits côtés 60 sont renforcés, utilisés comme
des planches, coupés à la longueur souhaitée et s'étendant parallèlement dans un plan horizontal avec un entraxe qui peut être régulier ou non. Dans les palettes 8 et 80 des figures 3 et 4, ces profilés la du plateau porte-charge 1 1 sont assemblés intimement, par exemple par collage, sur d'autres profilés la complémentaires orientés perpendiculairement pour former une structure quadrillée rigide. Dans la palette 81 de la figure 5, les profilés la du plateau porte-charge 1 1 sont assemblés intimement directement aux entretoises 14. Dans les trois variantes de palettes de transport 8, 80, 81 , la semelle d'appui 12 est formée de trois skis parallèles, obtenus par trois profilés tubulaires la, de section parallélépipédique, coupés à la longueur souhaitée, disposés parallèlement entre eux, dans un plan parallèle et situé en dessous du plateau porte- charge 1 1. Ils sont assemblés intimement au plateau porte-charge 1 1 par les entretoises 13, 14. Les entretoises 13, 14 peuvent être formées chacune par au moins un profilé tubulaire à section carrée, rectangulaire (cf. fig. 3 et 4), circulaire (cf. fig. 5) ou autre, disposé dans un plan vertical, entre le plateau porte-charge 1 1 et la semelle d'appui 12. Pour ce type d'application, on choisira de préférence les profilés la à lf et lh à lj dont les petits côtés 60 sont renforcés pour résister à l'écrasement (flèche F) par la charge transportée. Due to its mechanical properties, the tubular section 1a according to the invention lends itself perfectly to use for many applications in various and varied sectors. It can in particular be used to manufacture a transport pallet 8, 80, 81 as illustrated in FIGS. 3 to 5, comprising a load-bearing tray 1 1 connected to a support pad 12 by spacers 13, 14. 1 1 carrying pallets transport pallets 8, 80, 81 is formed of a plurality of tubular sections according to the invention of parallelepipedal section, for example the tubular section la of Figure 1A whose short sides 60 are reinforced, used as planks, cut to the desired length and extending parallel in a horizontal plane with a spacing that may be regular or not. In the pallets 8 and 80 of FIGS. 3 and 4, these profiles 1a of the load-bearing tray 1 1 are intimately joined, for example by bonding, to other complementary shapes oriented perpendicularly to form a rigid grid structure. In the pallet 81 of FIG. 5, the profiles 1a of the load-bearing tray 1 1 are assembled directly directly to the spacers 14. In the three variants of transport pallets 8, 80, 81, the support sole 12 is formed of three parallel skis, obtained by three tubular sections la, parallelepipedal section, cut to the desired length, arranged parallel to each other, in a parallel plane and located below the load plate 1 1. They are intimately assembled to the tray-holder load 1 1 by the spacers 13, 14. The spacers 13, 14 may each be formed by at least one tubular section with square section, rectangular (see Fig. 3 and 4), circular (see Fig. 5) or other disposed in a vertical plane, between the load-bearing tray 1 1 and the bearing flange 12. For this type of application, it is preferable to choose the profiles 1a-1f and 1h-1b whose short sides 60 are reinforced. to resist the crash (arrow F) by the transported load.
Les entretoises 13 des palettes 8, 80 sont obtenues par la juxtaposition de plusieurs tronçons de profilés tubulaires, par exemple mais pas nécessairement le même profilé la que pour le plateau porte-charge 1 1 et la semelle 12. Ces tronçons de profilés sont assemblés intimement face à face pour obtenir des entretoises 13 plus épaisses, sensiblement carrées, et donc particulièrement solides, extrêmement rigides en compression, contribuant à améliorer la robustesse de la palette de transport 8, 80, devenant ainsi apte à supporter des charges importantes. The spacers 13 of the pallets 8, 80 are obtained by the juxtaposition of several sections of tubular sections, for example but not necessarily the same section la that for the load plate 1 1 and the sole 12. These section sections are assembled intimately face to face to obtain spacers 13 thicker, substantially square, and therefore particularly strong, extremely rigid compression, helping to improve the robustness of the transport pallet 8, 80, becoming able to withstand heavy loads.
Dans la palette de transport 8 de la figure 3, les entretoises 13 sont assemblées aux profilés la du plateau porte-charge 1 1 et de la semelle 12 par un contact plan et liées par un cordon de colle ou tout moyen de liaison similaire. Dans la palette de transport 80 de la figure 4, les entretoises 13 sont emboîtées dans un évidement 15 ménagé
dans les profilés la du plateau porte-charge 1 1 et liées par collage ou tout procédé similaire. Dans la palette de transport 81 de la figure 5, les entretoises 14 comportent un évidement 16 pour s'emboiter sur les profilés la du plateau porte-charge 1 1 et de la semelle 12 et liées également par collage ou tout procédé équivalent. Ceci démontre les différentes possibilités d'assemblage entre les différents profilés pour obtenir une structure mécaniquement rigide. De plus, l'assemblage par emboîtement tel que représenté dans les palettes 80 et 81 permet d'éviter tout usinage complexe et coûteux des profilés tubulaires tel que perçage, découpage, emboutissage, etc. classiquement nécessaire à l'introduction des entretoises 13, 14, ce qui permet d'éviter les zones de rupture risquant de fragiliser la palette, et de faciliter la fabrication d'une telle palette de transport 8, 80, 81 par un procédé automatisé ou semi-automatisé. In the transport pallet 8 of FIG. 3, the spacers 13 are assembled to the profiles 1a of the load-carrying tray 1 1 and of the sole 12 by plane contact and connected by a bead of adhesive or any similar connecting means. In the transport pallet 80 of FIG. 4, the spacers 13 are nested in a recess 15 arranged in the profiles 1a of the load carrier 1 1 and bonded by bonding or any similar method. In the transport pallet 81 of FIG. 5, the spacers 14 comprise a recess 16 for fitting on the profiles 1a of the load-bearing tray 1 1 and the sole 12 and also bonded by bonding or any equivalent method. This demonstrates the different possibilities of assembly between the different profiles to obtain a mechanically rigid structure. In addition, the interlocking assembly as shown in the pallets 80 and 81 makes it possible to avoid complex and costly machining of tubular sections such as drilling, cutting, stamping, etc. conventionally necessary for the introduction of the spacers 13, 14, which makes it possible to avoid the zones of rupture which may weaken the pallet, and to facilitate the manufacture of such a transport pallet 8, 80, 81 by an automated method or semi-automated.
Les figures 6 et 7 montrent respectivement un plateau porte-charge 1 1 seul et un ski de semelle 12 seul, formant des produits finis prêts à l'emploi pour diverses applications. Ceci démontre la souplesse d'utilisation les profilés tubulaires de l'invention. Figures 6 and 7 show respectively a load carrier 1 1 only and sole ski 12 alone, forming finished products ready for use for various applications. This demonstrates the flexibility of use of the tubular sections of the invention.
Dans le même esprit, la présente invention prévoit également une utilisation des profilés tubulaires la à lj obtenus selon le procédé de l'invention pour la fabrication de tout autre produit, en partie ou en totalité, tel que notamment un emballage, un meuble, un chevalet, un plateau, une gaine technique, un conduit de ventilation, etc. In the same spirit, the present invention also provides a use of the tubular sections la Ij obtained by the method of the invention for the manufacture of any other product, in part or in whole, such as including a package, a piece of furniture, a easel, a tray, a technical duct, a ventilation duct, etc.
Possibilités d'application industrielle : Possibilities of industrial application:
Il ressort clairement de cette description que l'invention permet d'atteindre les buts fixés, à savoir proposer un procédé de fabrication de type "continu" de profilés tubulaires de section quelconque, rapide, économique, évolutif et flexible. Par ailleurs le profilé tubulaire la à lj obtenu par la mise en œuvre du présent procédé
présente des propriétés mécaniques améliorées lui permettant d'être utilisé pour fabriquer de nombreux produits nécessitant solidité et robustesse. It is clear from this description that the invention achieves the goals set, namely to provide a continuous type of manufacturing process tubular sections of any section, fast, economical, scalable and flexible. In addition, the tubular section 1a obtained by the implementation of the present process has improved mechanical properties allowing it to be used to make many products requiring strength and robustness.
La présente invention n'est pas limitée aux exemples de réalisation décrits mais s'étend à toute modification et variante évidentes pour un homme du métier tout en restant dans l'étendue de la protection définie dans les revendications annexées.
The present invention is not limited to the embodiments described but extends to any modification and variation obvious to a person skilled in the art while remaining within the scope of protection defined in the appended claims.
Claims
1. Procédé de fabrication d'un profilé tubulaire (la à lj) en carton, matériau composite ou similaire, par superposition et assemblage intime d'une pluralité de bandes de matière (2) formant une paroi (6) multicouche, dans lequel on déroule dans un sens longitudinal correspondant à un axe longitudinal A dudit profilé tubulaire au moins une première bande de matière (2a) destinée à former au moins en partie la face intérieure (3) dudit profilé tubulaire, on la met en forme autour d'un mandrin de formage (4) longitudinal présentant un développé agencé pour définir la section intérieure dudit profilé tubulaire, on répète ces opérations de déroulage et de mise en forme pour chaque bande de matière (2b à 2g) jusqu'à la dernière bande de matière (2h) destinée à former au moins en partie la face extérieure (5) dudit profilé tubulaire, en décalant angulairement au moins certaines desdites bandes de matière entre elles, pour former un tube fermé et en assemblant intimement lesdites bandes de matière entre elles au fur et à mesure de leur mise en forme, caractérisé en ce que l'on utilise, pour au moins une partie des bandes de matière (2), au moins deux bandes partielles (20 à 23) dont la largeur est supérieure au demi développé du mandrin de formage (4) pour créer des sur-largeurs, l'on déroule lesdites bandes de matière partielles (20 à 23) de sorte à les disposer en opposition par rapport audit axe longitudinal A, l'on met en forme lesdites bandes partielles (20 à 23) autour dudit mandrin de formage (4) pour former au moins une couche dudit profilé tubulaire (la à lj), l'on superpose les sur-largeurs desdites bandes partielles (20 à 23) et on les assemble intimement. 1. A method of manufacturing a tubular section (la to lj) of cardboard, composite material or the like, by superposition and intimate assembly of a plurality of strips of material (2) forming a wall (6) multilayer, wherein extends in a longitudinal direction corresponding to a longitudinal axis A of said tubular section at least a first strip of material (2a) intended to form at least partly the inner face (3) of said tubular section, it is shaped around a longitudinal forming mandrel (4) having a developed arranged to define the inner section of said tubular section, these unwinding and forming operations are repeated for each strip of material (2b to 2g) up to the last strip of material ( 2h) intended to form at least partly the outer face (5) of said tubular section, angularly shifting at least some of said strips of material between them, to form a closed tube and in asse intimately mulling said strips of material together as they are shaped, characterized in that at least a portion of the strips of material (2) are used with at least two partial strips (20 to 23 ) whose width is greater than the developed half of the forming mandrel (4) to create over-widths, said partial strips of material (20 to 23) are unwound so as to arrange them in opposition with respect to said longitudinal axis A , said partial strips (20 to 23) are shaped around said forming mandrel (4) to form at least one layer of said tubular section (1a-1), the over-widths of said partial strips are superimposed ( 20 to 23) and we assemble them intimately.
2. Procédé selon la revendication 1, caractérisé en ce que l'on utilise, pour au moins une partie des bandes de matière (2), deux bandes partielles (20) de même largeur que l'on superpose pour former une bande double (21). 2. Method according to claim 1, characterized in that at least a portion of the strips of material (2) are used two partial strips (20) of the same width which are superposed to form a double strip ( 21).
3. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'on utilise, pour au moins une partie des bandes de matière (2), une bande complexe constituée d'un assemblage de plusieurs matières. 3. Method according to any one of the preceding claims, characterized in that is used, for at least a portion of the material strips (2), a complex strip consisting of an assembly of several materials.
4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'on utilise, pour au moins une partie des bandes de matière (2), une bande pliée en deux dans le sens longitudinal pour former une bande doublée (22). 4. Method according to any one of the preceding claims, characterized in that, for at least a portion of the strips of material (2), a band folded in two in the longitudinal direction is used to form a doubled strip (22). ).
5. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'on utilise, pour au moins une partie des bandes de matière (2), une bande dont les bords longitudinaux sont pliés pour former une bande partiellement doublée (23). 5. Method according to any one of claims 1 to 3, characterized in that is used, for at least a portion of the strips of material (2), a strip whose longitudinal edges are folded to form a partially doubled strip (23).
6. Procédé selon la revendication 1, caractérisé en ce que l'on réalise au moins deux couches dudit profilé tubulaire avec lesdites bandes partielles (20 à 23) pourvues de sur-largeurs sans les décaler angulairement d'une couche à l'autre de sorte que les sur-largeurs se superposent d'une couche à l'autre pour créer des zones renforcées dans la paroi (6) dudit profilé tubulaire (la à lf et lh à lj). 6. Method according to claim 1, characterized in that one carries out at least two layers of said tubular section with said partial strips (20 to 23) provided with over-widths without angularly shifting them from one layer to the other of so that the over-widths are superimposed from one layer to another to create reinforced areas in the wall (6) of said tubular section (la to lf and lh to lj).
7. Procédé selon la revendication 1, caractérisé en ce que l'on réalise au moins deux couches dudit profilé tubulaire avec lesdites bandes partielles (20 à 23) pourvues de sur-largeurs en les décalant angulairement de 90° d'une couche à l'autre pour créer un profilé tubulaire (lg) de paroi (6) d'épaisseur constante. 7. Method according to claim 1, characterized in that one carries out at least two layers of said tubular section with said partial strips (20 to 23) provided with over-widths by shifting them angularly by 90 ° from one layer to the other. other for creating a tubular section (lg) of wall (6) of constant thickness.
8. Profilé tubulaire (la à lj) en carton, matériau composite ou similaire, obtenu par superposition et assemblage intime d'une pluralité de bandes de matière (2) formant une paroi (6) multicouche, lesdites bandes de matière s' étendant dans un sens longitudinal correspondant à un axe longitudinal A dudit profilé tubulaire, étant mises en forme autour d'un mandrin de formage (4) longitudinal présentant un développé agencé pour définir la section intérieure dudit profilé tubulaire, certaines desdites bandes de matière étant décalées angulairement au moins entre elles pour former un tube fermé, caractérisé en ce qu'au moins une des couches formant la paroi (6) dudit profilé tubulaire est réalisée par au moins deux bandes partielles (20 à 23) présentant une largeur supérieure au demi développé de la section intérieure dudit profilé pour créer des sur-largeurs et disposées en opposition par rapport audit axe longitudinal A, lesdites sur-largeurs étant superposées. 8. Tubular section (1a-1a) of cardboard, composite material or the like, obtained by superposing and intimately joining a plurality of strips of material (2) forming a multilayer wall (6), said strips of material extending into a longitudinal direction corresponding to a longitudinal axis A of said tubular section, being shaped around a longitudinal forming mandrel (4) having a developed arranged to define the inner section of said tubular section, some of said strips of material being angularly offset at minus one another to form a closed tube, characterized in that at least one of the layers forming the wall (6) of said tubular section is formed by at least two partial strips (20 to 23) having a width greater than the developed half of the inner section of said profile to create over-widths and arranged in opposition to said longitudinal axis A, said over-widths being superimposed.
9. Profilé tubulaire selon la revendication 8, caractérisé en ce qu'au moins une partie des bandes de matière (2) est formée de deux bandes partielles (20) de même largeur et superposées pour former une bande double (21). 9. tubular section according to claim 8, characterized in that at least a portion of the material strips (2) is formed of two partial strips (20) of the same width and superimposed to form a double strip (21).
10. Profilé tubulaire selon l'une quelconque des revendications 8 ou 9, caractérisé en ce qu'au moins une partie des bandes de matière (2) est formée d'une bande complexe constituée d'un assemblage de plusieurs matières. 10. tubular section according to any one of claims 8 or 9, characterized in that at least a portion of the material strips (2) is formed of a complex strip consisting of an assembly of several materials.
1 1. Profilé tubulaire selon l'une quelconque des revendications 8 à 10, caractérisé en ce qu'au moins une partie des bandes de matière (2) est formée d'une bande pliée en deux dans le sens longitudinal pour former une bande doublée (22). Tubular profile according to one of claims 8 to 10, characterized in that at least a part of the material strips (2) is formed of a band folded in two in the longitudinal direction to form a doubled strip. (22).
12. Profilé tubulaire selon l'une quelconque des revendications 8 à 10, caractérisé en ce qu'au moins une partie des bandes de matière (2) est formée d'une bande- dont les bords longitudinaux sont pliés pour former une bande partiellement doublée (23). Tubular profile according to one of Claims 8 to 10, characterized in that at least a portion of the material strips (2) is formed of a strip whose longitudinal edges are folded to form a partially doubled strip. (23).
13. Profilé tubulaire selon la revendication 8, caractérisé en ce que les bandes partielles (20 à 23) pourvues de sur-largeurs sont superposées sans décalage angulaire d'une couche à l'autre pour obtenir un profilé tubulaire renforcé dans les zones où les sur-largeurs sont superposées. Tubular profile according to Claim 8, characterized in that the partial strips (20 to 23) provided with over-widths are superposed without any angular displacement from one layer to another to obtain a reinforced tubular section in the zones where the over-widths are superimposed.
14. Profilé tubulaire selon la revendication 8, caractérisé en ce que les bandes partielles (20 à 23) pourvues de sur-largeurs sont superposées et décalées de 90° d'une couche à l'autre pour obtenir un profilé tubulaire d'épaisseur constante. Tubular profile according to claim 8, characterized in that the partial strips (20 to 23) provided with over-widths are superimposed and shifted by 90 ° from one layer to the other to obtain a tubular section of constant thickness. .
15. Profilé tubulaire (1 , 10) selon la revendication 13, caractérisé en ce qu'il présente une section parallélépipédique et en ce que ladite paroi (6) comporte deux côtés opposés (61) dont l'épaisseur (el) est supérieure à celle (e2) des deux autres côtés opposés (60). 15. tubular section (1, 10) according to claim 13, characterized in that it has a parallelepipedal section and in that said wall (6) has two sides opposed (61) whose thickness (el) is greater than that (e2) of the two other opposite sides (60).
16. Utilisation du profilé tubulaire (la à lj) selon l'une quelconque des revendications 8 à 15 pour la fabrication en partie ou en totalité d'une palette de transport (8, 80, 81) comportant au moins un plateau porte-charge (1 1) relié à une semelle d'appui (12) par des entretoises (13, 14), ledit plateau porte-charge (1 1 ) et/ou ladite semelle d'appui (12) étant réalisés chacun par une pluralité de profilés tubulaires (la à lj) formant des planches assemblées entre elles, et lesdites entretoises (13, 14) étant formées chacune par au moins un profilé tubulaire (la à lj) s'étendant entre ledit plateau porte-charge (11) et ladite semelle d'appui (12). 16. Use of the tubular section (la to lj) according to any one of claims 8 to 15 for the manufacture in part or in full of a transport pallet (8, 80, 81) having at least one load plate (1 1) connected to a support plate (12) by spacers (13, 14), said load plate (1 1) and / or said support plate (12) being each made by a plurality of tubular sections (1a-1a) forming planks joined together, and said spacers (13, 14) being each formed by at least one tubular section (1a-1c) extending between said load carrier (11) and said support sole (12).
17. Utilisation selon la revendication 16, caractérisée en ce qu'elle consiste à fabriquer chacune desdites entretoises (13) au moyen d'au moins deux profilés tubulaires de section parallélépipédique de même longueur juxtaposés. 17. Use according to claim 16, characterized in that it consists in manufacturing each of said spacers (13) by means of at least two tubular sections of parallelepiped section of the same length juxtaposed.
18. Utilisation selon l'une quelconque des revendications 16 ou 17, caractérisée en ce qu'elle prévoit d'équiper ledit plateau porte-charge (11), ladite semelle d'appui (12) et/ou lesdites entretoises (13, 14) de formes d'emboîtement (15, 16) complémentaires permettant leur assemblage par emboîtement. 18. Use according to any one of claims 16 or 17, characterized in that it provides to equip said load plate (11), said support plate (12) and / or said spacers (13, 14 ) complementary interlocking forms (15, 16) for their assembly by interlocking.
19. Utilisation du profilé tubulaire (la à lj) selon l'une quelconque des revendications 8 à 15 pour la fabrication en partie ou en totalité d'un objet choisi dans le groupe comprenant un emballage, un meuble, un chevalet, un plateau, une gaine technique, un conduit de ventilation. 19. Use of the tubular section (la-lj) according to any one of claims 8 to 15 for the manufacture in part or in whole of an object selected from the group consisting of a package, a piece of furniture, an easel, a tray, a technical duct, a ventilation duct.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1251582A FR2986991B1 (en) | 2012-02-21 | 2012-02-21 | METHOD FOR MANUFACTURING A TUBULAR PROFILE, TUBULAR PROFILE OBTAINED AND USE OF SAID TUBULAR PROFILE |
FR12/51582 | 2012-02-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013124549A1 true WO2013124549A1 (en) | 2013-08-29 |
Family
ID=48083441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2013/000044 WO2013124549A1 (en) | 2012-02-21 | 2013-02-19 | Method for manufacturing a tubular profile member, resulting tubular profile member, and use of said tubular profile member |
Country Status (2)
Country | Link |
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FR (1) | FR2986991B1 (en) |
WO (1) | WO2013124549A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2678665A (en) * | 1950-07-31 | 1954-05-18 | Glassips Inc | Holed stirring stick |
GB2000105A (en) | 1977-06-27 | 1979-01-04 | Lhomme Sa | Packaging Box and Method for its Manufacture |
EP0387171A1 (en) | 1989-03-10 | 1990-09-12 | Jean-Marie Eberle | Method for producing a tubular packing body, packing made by this method and device for this method |
FR2702414A1 (en) | 1993-03-12 | 1994-09-16 | Helverep Sa | Process for the continuous manufacture of tubular bodies of boxes, especially cardboard boxes |
WO1997013695A1 (en) * | 1995-10-11 | 1997-04-17 | Ingmar Andreasson | Method and device for production of tubes |
-
2012
- 2012-02-21 FR FR1251582A patent/FR2986991B1/en not_active Expired - Fee Related
-
2013
- 2013-02-19 WO PCT/FR2013/000044 patent/WO2013124549A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2678665A (en) * | 1950-07-31 | 1954-05-18 | Glassips Inc | Holed stirring stick |
GB2000105A (en) | 1977-06-27 | 1979-01-04 | Lhomme Sa | Packaging Box and Method for its Manufacture |
EP0387171A1 (en) | 1989-03-10 | 1990-09-12 | Jean-Marie Eberle | Method for producing a tubular packing body, packing made by this method and device for this method |
FR2702414A1 (en) | 1993-03-12 | 1994-09-16 | Helverep Sa | Process for the continuous manufacture of tubular bodies of boxes, especially cardboard boxes |
WO1997013695A1 (en) * | 1995-10-11 | 1997-04-17 | Ingmar Andreasson | Method and device for production of tubes |
Also Published As
Publication number | Publication date |
---|---|
FR2986991A1 (en) | 2013-08-23 |
FR2986991B1 (en) | 2015-05-22 |
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