Classifications

• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
  • E02D17/00—Excavations; Bordering of excavations; Making embankments
  • E02D17/20—Securing of slopes or inclines
  • E02D17/202—Securing of slopes or inclines with flexible securing means
• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
  • E02D17/00—Excavations; Bordering of excavations; Making embankments
  • E02D17/20—Securing of slopes or inclines
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49826—Assembling or joining
  • Y10T29/49947—Assembling or joining by applying separate fastener
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
  • Y10T428/24149—Honeycomb-like

Definitions

• the present invention relates, in the field of retaining, alveolar structures.
• the invention relates more particularly to a cellular product of good durability, a method and equipment for manufacturing such a product.
• the rigidity of the structure is obtained by means of a process for coating the fibers of the strips in a resin.
• rigidity decreases over time with this type of impregnation.
• the present invention therefore aims to overcome one or more of the drawbacks of the prior art by providing a cellular product remaining relatively simple design that is of good strength over time, reliably used for restraint applications. material (for example: ground restraint, formwork for sloping concrete).
• a cellular product comprising a plurality of strips associated with each other to form in a deployed form a cellular honeycomb-shaped structure, the product having a height which corresponds to the width of the strips for said deployed form.
• the strips are interconnected by staples, each of the cells of the product being formed by two portions belonging to two adjacent strips, these two portions being connected together by a first series and a second series of aligned staples following the bandwidth, these two series corresponding to two edges of the cell.
• the product according to the invention advantageously makes it possible to dispense with bonding resin while obtaining a structure of rigidity and satisfactory strength in the deployed state.
• each of the strips is nonwoven fabric based on polyester fibers, needled and calender, water can be filtered by the strip.
• each of the strips is thermofixed and thermofixed nonwoven fabric.
• said first series and said second series of staples each comprise between three and eighteen staples regularly spaced and aligned in the same direction.
• the strips are devoid of coating resin or glue and each have a specific width of between 50 and 400 mm.
• the cellular product comprises at least one support layer connected to the strips of the product and in contact with the edges of the cells.
• a further object of the invention is to propose applications of the cellular product.
• a further object of the invention is to provide a foam product manufacturing method for quickly achieving a honeycomb structure suitable for retaining applications.
• the invention relates to a method for manufacturing a cellular product, comprising a step of assembling strips of the same width to allow forming in a deployed form a honeycomb-shaped honeycomb structure, strips being previously superimposed, characterized in that it comprises a step of linking together strips superimposed by staples, wherein two adjacent strips are attached to one another by a plurality of first series and second series of staples, each of the cells of the product being formed by two portions facing each other belonging to two adjacent strips, these two portions being connected together at the edges of the cell, by a first series and a second series of staples aligned according to the web width, the staple alignment of each of the series being bandwidth-based by a stapler having an anvil support carried laterally after positioning the anvil of the stapler in two adjacent bands.
• the distance between the first series and the second series of staples forming the edges of a cell corresponds, for example, to a constant. This longitudinal distance naturally decreases when moving from the stacked configuration to the deployed configuration. In a hexagonal-shaped cell formed by a pair of bands, this distance remains greater, even in the deployed configuration, at the distance between the two rows successive staples used to attach a wall of this cell against an adjacent band belonging to a different pair of bands.
• a first set and a second set of translational guide means along the bandwidth are used alternately every other band to enable the stapler to be positioned at staggered alignment levels which are shifted one by one. band out of two, so as to allow the realization of the cells.
• an additional strip is added, after a stapling cycle, on a superposition of strips already stapled together to allow to start an additional stapling cycle.
• the anvil support is successively inserted in each of the cells made during the previous stapling cycle to allow the fastening of the staples during the stapling cycle in progress, the rest of the stapler being maintained at above the band last added for this current cycle.
• a further object of the invention is to provide an alveolar product manufacturing equipment for designing a simple and fast way a honeycomb structure suitable for supporting applications.
• the invention relates to an equipment for manufacturing a cellular product, comprising an elongated support of superimposed strips and a device for associating the strips together so that these form in a deployed form a honeycomb shaped structure.
• Honeycomb characterized in that the device is a stapler with an elongated anvil support and offset laterally to allow insertion of the stapler's anvil under two adjacent strips, at the side and in the widthwise direction of the strips , the stapler comprising a movable knife (in translation) allowing in association with the anvil, to fix staples each oriented in an orientation orthogonal to the general orientation of the anvil support, the equipment further comprising means of indication of a first group and a second group of desired positions for stapling, the first group and the second group being used alternately every other band, so as to allow the realization of cells.
• the assembly of the strips to form the honeycomb structure can be achieved without gluing operation detrimental to the preservation of rigidity of the product or tedious sewing operation.
• the specific arrangement of the stapler provides staple alignments along the bandwidth that form the edges of the stacks.
• the stapler is secured to a mobile system in three directions, two directions orthogonal to each other and parallel to a plane defined by the support strips and a third direction orthogonal to this plane.
• the longitudinal movement of the stapler to the appropriate levels of stapling as well as the lateral movement to be carried out for laying the same series of staples can be achieved by means of a mobile system (for example motorized and sliding on rails of a frame).
• a mobile system for example motorized and sliding on rails of a frame.
• the support (S) of strips (B) is coupled to a plurality of guide means (6) of the stapler (1) which are distributed along the support strips (B) according to positions desired for stapling, the guiding means (6) receiving a rod (tg) secured to the stapler (1) and parallel to the anvil support (10) for guiding the stapler (1) and allow a fixation of several staples (1) aligned with each other for a given position.
• the anvil support is connected to one end of an intermediate extension member, this extension member being kept apart from the rest of the stapler by a lateral support arm attached to the other end thereof. extension element.
• a pair of tapes to be tied together can be raised over the anvil support, while remaining in line.
• the stapler will not hinder the maintenance in line strips since the longitudinal extension member is disposed on the side of the stack of strips and sufficient space is left behind the anvil support (for example about 80 mm apart).
• FIG. 1 shows a perspective view of a honeycomb product manufacturing equipment according to one embodiment of the invention
• FIG. 2 shows a longitudinal sectional view illustrating the assembly of the strips with the stapler of the equipment according to the invention
• FIG. 3 schematically illustrates, in perspective, the structure of a cellular product according to the invention before placing and filling the cells;
• FIG. 4 schematically illustrates, in perspective, a honeycomb structure of which one of the faces is associated with a reinforcement, as described in the prior art by the document WO 95/38417, and in which the connection between the strips is carried out by sewing or gluing.
• FIG. 5 shows a top view of a cell of a product according to the invention
• FIG. 6 shows a longitudinal sectional view of an in-line stapler whose anvil support (10) is offset relative to the rest of the stapler.
• the cellular product according to the invention is produced by combining a plurality of strips (B) that can form in a deployed configuration a honeycomb-shaped honeycomb structure. Two strips (B) are superimposed on a support (S) before the fastenings are made.
• the cellular product obtained is composed of strips (B) having the same general orientation and each breaking down into elementary patterns.
• FIG. 3 thus shows an elementary band pattern (B) composed of a portion contiguous to an adjacent band, an intermediate portion without contact with other bands, a portion contiguous to the other adjacent band and again an intermediate portion. This pattern is repeated several times for a band (B).
• Each of the cells (A) of the product is formed by two sections (t1, t2) vis-à-vis belonging to two adjacent bands. As illustrated in FIG. 5, such a section (t1) comprises a portion contiguous to another strip and two intermediate portions. Unlike the structure of FIG. 4, gluing or seaming between the web portions in contact is not necessary.
• the strips (B) are advantageously linked together by staples (2) fixed in the direction of the width (20) of the strip.
• the two sections (t1, t2) facing each other can be connected to each other and form a cell (A) thanks to the presence of a first series (si) and a second series (s2) of staples (2) aligned along the web width (20).
• These two series (si, s2) thus correspond to two edges of the cell (A) in the shape of a hexagon.
• These two edges can be considered, in a nonlimiting manner, as opposed to one another, relative to the same cell.
• Other similar shapes of cells can of course be made as may be appreciated by those skilled in the art.
• the strips (B) are, for example, chosen from a material of non-woven textile type, for example based on polymer and needled fibers.
• the constituent material of the strips (B) can be thermolated and heat set. Thermolysis makes it possible to bind the fibers together, for example by introducing additional binding fibers (thermal consolidation at the core of the product due to the incorporation of fibers passed to the oven), for example polypropylene fibers. Heat-setting can consist of passing the material in an oven to achieve thermal consolidation of surface. These heat treatments make it possible to improve the resistance of the material and to avoid excessive elongations with use.
• the material of the strip (B) remains sufficiently porous and permeable to allow the filtration of water. This permeability allows the use to reduce the stresses experienced by the product. The filling (earth, ..) thus retains its cohesion.
• nonwoven material needled include but not limited to DUTEXIM 41-45C THU marketed by Tharreau Industries, which is based on polyester fibers.
• the type of material chosen may have undergone calendering and heat-setting, so as to offer excellent dimensional stability at high temperature, as well as a very good regularity of weight and thickness (the constant thickness is, for example, typically order of 2 or 3 mm). Calendering makes it possible to reduce the thickness.
• the strips (B) are devoid of coating resin or glue and may each be of the same width (20) determined between 50 and 400 mm. It is understood that the cellular product in its deployed configuration will have a height which corresponds to the width (20) of the strips (B).
• the first series (si) and the second series (s2) of staples may each comprise between three and eighteen staples (2) regularly spaced. These staples (2) are strictly aligned as shown in Figure 3. For an edge formed by U-shaped clips each comprising a central rod extended at both ends by a tab of the U, the tabs being intended to be bent, the stems The centers of these clips are aligned.
• the staples (2) consist for example of stainless steel.
• the manufacturing equipment comprises a support (S) elongated to receive the strips (B) superimposed and a stapling device for associating the strips (B) therebetween.
• the strips (B) are stacked and can thus form a compact assembly. Along this stack, it comes to position the stapling device, for example movable longitudinally.
• a guide rail (120) is provided in a frame raised relative to the table or support (S) where the strips (B) are placed.
• a guide is provided to limit the longitudinal movement of the stapling device.
• This device comprises an in-line stapler (1) supported by the frame and made mobile, thanks to a mobile system mounted on the frame, in three directions, two directions orthogonal to each other and parallel to the plane defined by the support strips (B) and a third direction orthogonal to the plane defined by the support strips (B).
• the stapler (1) must indeed be able to move laterally on a constant longitudinal level to achieve a perfect alignment of staples (2) of the same series (si, s2).
• the stapler (1) used differs from a conventional stapler in overcoming the difficulty of performing this type of stapling on a web width (20) that can accommodate an alignment of a plurality of staples (2).
• the stapler (1) thus has on one side a U formed by three elements:
• the extension member (rai) is sufficiently offset to lift a pair of strips and introduce it longitudinally over the entire strip width (20) between the anvil support (10) and the outlet (13) of staples (2) of the main body (11) of the stapler (1).
• the extension element (rai) remains for example continuously in a position of side with respect to the strips (B) superimposed during the process.
• the lateral displacement of the stapler (1) is for example limited so that a lateral spacing is maintained between the strips (B) and the extension member (rai).
• the anvil support (10) is inserted under the pair of strips (B) as illustrated in FIG. 6.
• the total number of longitudinal positions of stapling is for example an even number determined. It is understood, to realize the honeycomb structure, a stapling cycle must be limited to the stapling for only half of these positions, the next cycle being dedicated to the remaining positions. All of the stapling positions are therefore performed during two passes / cycles of the stapler (1), a strip (B) having been added on top between the two cycles.
• the equipment comprises for example means for indicating a first group and a second group of desired positions (gp1, gp2) for stapling, the first group and the second group (gp1, gp2) being used in alternate one band out of two, so as to allow the realization of the cells (A).
• the first cycle provides stapling for the first group of positions (gp1)
• the second cycle provides stapling for the second group of positions (gp2).
• the anvil support (10) must be successively inserted in each of the cells (A) made during the previous stapling cycle to allow the fixing of the staples ( 2) of the current cycle.
• the rest of the stapler (1) is held above the strip (B) added for each of the new cycles.
• consecutive alignments can each be obtained precisely by means of a guide of the lateral movement of the stapler (1).
• a holding in the respective positions (P1, P2) corresponding to the alignment direction can be achieved by means of a rod (tg) integral with the stapler (1) and intended to cooperate with guiding means ( 6).
• the support (S) of strips (B) is for example coupled to a plurality of guide means (6) of the stapler (1) which are distributed along the support of strips (B). depending on the desired positions for stapling.
• These guide means (6) receive the rod (tg), by engagement between two walls for example, and block the longitudinal movement of the stapler (1).
• Peels of plates for example each form a guide for a specific position, the plates being, for example, but not limited to wood, metal, plastic or thermoplastic, such as polymethyl methacrylate also designated by PMMA .
• the rod (tg) which is parallel to the anvil support (10) thus guides the stapling of the staples (2) of the same series along the width (20). It is ensured to obtain a fixation of several staples (1) aligned with each other for a given position (P1, P2).
• the stapler (1) comprises a knife movable in translation (not shown) in association with the anvil (100), to fix the staples (2).
• the position of the knife and the orientation of the staple magazine (14) are adapted so that the staples (2) are each oriented in an orientation orthogonal to the general orientation of the anvil support (10).
• the downward movement of the knife allows the insertion of the staple (2) in the two strips to be fixed, while the anvil (100) makes it possible to solicit the staple ends and allows their folding on the lower band of the strips to be fixed.
• the stapler (1) staple in line strips (B) in pairs without requiring the slightest lateral movement for the strips (B), the stack always remaining straight.
• the spacing (E) between the main body (11) of the stapler (1) and the transverse anvil support (10) makes it possible not to modify the general orientation in length of the two upper bands (B). .
• An offset along the length between two successive bands is, for example, avoided.
• Only the stapler (1) moves laterally when it reaches a stapling position (P1, P2).
• the connection (12) of the stapler (1) to the raised frame can be equipped with a spring (r) or similar elastic return means facilitating the operations of lifting the stapler ( 1) required for a good grip of the strips (B) to be stapled.
• the lifting of the strips (B) to allow the insertion of the anvil support (10) can be manual or performed by a complementary lifting tool of a blade that can be introduced under the two upper bands (B) of the stack.
• a plate (15) can be fixed to the main body (1 1), for example on the top, and allow connection by an arm or a downward operating rod connected to the mobile system of the raised frame.
• the stapler (1) can alternatively be supported laterally for example and the raised frame can be replaced by a rail on the ground supporting the mobile system laterally connected to the stapler (1).
• the stapler (1) may be of the actuator piston type, actuated manually via a trigger (g) and / or pneumatically.
• An automaton can trigger stapling in synchronization with the movements of the system moving the stapler (1).
• This controller can use for this a stapler control program, taking into account the movements of the mobile system mounted on the frame (not shown) and signals indicating stapling positions.
• the pneumatic connection (31) and associated connectors (30, 32) can be omitted and the stapling operation can be performed manually, using the means for indicating the respective groups of desired positions (gp1, gp2).
• the manufacturing process comprises several pairs of cycles carried out as follows:
• the obtaining of the positions (gp1, gp2) for one or the other type of cycle is allowed by a first set and a second set of guide means (6).
• a pair of guide means is provided for obtaining the staple positions (P1, P2) of a cycle shown in FIG. 2, while a next pair of guide means is provided for obtaining the positions. stitching another cycle.
• the stapler (1) will therefore stop at two successive devices guide means (6) and then beyond without stopping the two following devices guide means. Indeed these last two are only used for the next cycle. There is therefore an alternation of pairs of guiding devices respectively usable for one or the other of the cycles.
• this first set and this second set of guiding devices (6) are used alternately every other band to enable the stapler (1) to be positioned at staggered alignment levels which are shifted one out of two stripes. , so as to allow the realization of the cells (A).
• the product is, for example, in the form of roll before being deployed, which facilitates in particular its storage and transport.

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• Engineering & Computer Science (AREA)
• Mining & Mineral Resources (AREA)
• General Engineering & Computer Science (AREA)
• General Life Sciences & Earth Sciences (AREA)
• Paleontology (AREA)
• Civil Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Structural Engineering (AREA)
• Laminated Bodies (AREA)
• Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
• Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
• Transplanting Machines (AREA)
• Beans For Foods Or Fodder (AREA)
• Package Frames And Binding Bands (AREA)

Applications Claiming Priority (2)

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Family Applications (1)

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Family Cites Families (12)

• 2007
  • 2007-12-26 FR FR0709108A patent/FR2925863B1/fr not_active Expired - Fee Related
• 2008
  • 2008-12-10 US US12/810,527 patent/US20100296877A1/en not_active Abandoned
  • 2008-12-10 CA CA2710180A patent/CA2710180C/en not_active Expired - Fee Related
  • 2008-12-10 EP EP08872699A patent/EP2229483B1/de not_active Not-in-force
  • 2008-12-10 WO PCT/FR2008/001717 patent/WO2009103876A1/fr active Application Filing
  • 2008-12-10 AT AT08872699T patent/ATE555254T1/de active

Non-Patent Citations (1)

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