Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21F—WORKING OR PROCESSING OF METAL WIRE
  • B21F15/00—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire
  • B21F15/02—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire wire with wire
  • B21F15/04—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire wire with wire without additional connecting elements or material, e.g. by twisting
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21F—WORKING OR PROCESSING OF METAL WIRE
  • B21F27/00—Making wire network, i.e. wire nets
  • B21F27/02—Making wire network, i.e. wire nets without additional connecting elements or material at crossings, e.g. connected by knitting
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21F—WORKING OR PROCESSING OF METAL WIRE
  • B21F27/00—Making wire network, i.e. wire nets
  • B21F27/02—Making wire network, i.e. wire nets without additional connecting elements or material at crossings, e.g. connected by knitting
  • B21F27/04—Manufacturing on machines with rotating blades or formers
• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
  • E01F7/00—Devices affording protection against snow, sand drifts, side-wind effects, snowslides, avalanches or falling rocks; Anti-dazzle arrangements ; Sight-screens for roads, e.g. to mask accident site
  • E01F7/04—Devices affording protection against snowslides, avalanches or falling rocks, e.g. avalanche preventing structures, galleries
  • E01F7/045—Devices specially adapted for protecting against falling rocks, e.g. galleries, nets, rock traps
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
  • E04H17/00—Fencing, e.g. fences, enclosures, corrals
  • E04H17/02—Wire fencing, e.g. made of wire mesh
  • E04H17/04—Wire fencing, e.g. made of wire mesh characterised by the use of specially adapted wire, e.g. barbed wire, wire mesh, toothed strip or the like; Coupling means therefor
  • E04H17/05—Wire mesh or wire fabric

Definitions

• the invention relates to a method for manufacturing coils according to the preamble of claim 1, a manufacturing device for manufacturing coils according to the preamble of claim 4 (see, for example, the respective references to claim 4).
• DE 10 2017 101751 B3 a wire mesh device according to the preamble of claim 17 (see e.g. WO9943894 A1 ) as well as uses of the wire mesh device according to claim 21.
• a method for manufacturing helixes for a wire mesh net, which are intended to be connected to each other to form the wire mesh net, has already been proposed, wherein the helixes are made from at least one longitudinal element with at least one wire formed at least partially from a high-strength steel, and wherein the helixes are bent in such a way that they comprise at least a plurality of first legs, at least a plurality of second legs, and at least a plurality of bending points connecting a first leg and an adjacent second leg.
• the object of the invention is, in particular, to provide a particularly suitable manufacturing process and a particularly suitable manufacturing apparatus for coils of wire mesh netting with particularly advantageous net properties, as described in particular below.
• This object is achieved according to the invention by the features of the Claims 1, 4 and 17 are resolved, while advantageous embodiments and further developments of the invention can be found in the dependent claims.
• the invention is based on a method according to the preamble of claim 1.
• the helixes be bent by a weaving knife arrangement comprising at least one weaving knife such that at least the centers of the first legs and/or at least the centers of the second legs of a finished helix lie at least substantially in one plane.
• the first legs and/or the second legs of the helix bent by the method lie at least largely or completely in the plane.
• planar helixes for wire mesh netting can be produced using a weaving knife arrangement.
• an already known manufacturing device can be modified using a simple Modifications can be designed for use with high-strength steel.
• this allows for a particularly simple and/or highly effective manufacturing process.
• the centers of the legs of high-strength steel helixes, which are bent with conventional braiding knives, do not lie in a single plane, but are rotated out of the plane by an angle due to the springback effects of the high-strength steel. See also in particular Fig. 12b , in which such an undirected helix is depicted.
• the influence of this springback effect is taken into account in the present braiding knife arrangement, so that flat helices made of high-strength steel can be advantageously produced.
• helix shall be understood to mean, in particular, a wire helix.
• the helix shall have, in particular, the form of a, preferably flat, helical line.
• the helix shall have, in particular, the form of a flat helix.
• the helix shall, in particular, form an at least partially flattened helix, which, when viewed along a longitudinal direction of the helix, has a substantially elliptical shape and/or the shape of a stadium track (corresponding to two semicircles connected by straight lines).
• wire mesh shall, in particular, be understood to mean a mesh formed from curved longitudinal elements, wherein, in particular, adjacent longitudinal elements are connected to one another by mutual interlocking.
• interconnected helixes contact each other at their bends when the mesh is spread out, wherein, in particular, adjacent bends alternately contact adjacent helixes. In particular, every second bend contact the same adjacent helix.
• the interconnected longitudinal elements preferably form at least partially angular, more preferably square, or at least partially round meshes.
• the wire mesh has an extension in a direction perpendicular to a net plane of the wire mesh, which is significantly larger, Preferably at least three times larger, preferably at least five times larger, than the mean diameter of a longitudinal element of the wire mesh.
• a wire mesh has at least one preferred direction of expansion.
• a square wire mesh advantageously has two, in particular equally important, preferred directions of expansion along connecting lines of opposite corners of the square wire mesh.
• a longitudinal element has a longitudinal extent that is at least 10 times, preferably at least 50 times, and preferably at least 100 times greater than a maximum transverse extent perpendicular to the longitudinal extent.
• at least one of the helical longitudinal elements preferably all helical longitudinal elements, is made from at least one single wire, a wire bundle, a wire strand, a wire rope, and/or another longitudinal element comprising at least one wire.
• wire shall be understood to mean, in particular, an elongated and/or thin and/or at least machine-bendable and/or flexible body.
• the wire has a cross-section that is at least substantially constant along its longitudinal direction, in particular circular or elliptical.
• the wire is particularly advantageously designed as a round wire.
• the wire is designed, at least partially or completely, as a flat wire, a square wire, a polygonal wire, and/or a profiled wire.
• a "high-strength steel” is defined as a steel with a tensile strength of at least 1370 N/ mm2 .
• a "at least partial construction from high-strength steel” is defined, in particular, as a wire being constructed entirely of high-strength steel, apart from any coatings or sheathing.
• a high-strength steel exhibits increased springback, i.e., a lower springback factor compared to non-high-strength steel.
• the value of the springback factor of the longitudinal element is less than 0.95. preferably less than 0.92, preferably less than 0.90 and most preferably less than 0.85.
• the first leg of the helix and/or the second leg of the helix extends at least at a first angle of inclination with respect to a longitudinal direction of the helix, wherein the first angle of inclination preferably has a value of approximately 45°.
• the bending point has an opening angle of approximately 90° perpendicular to the principal plane of extension of the helix.
• the bending point has a stepped or S-shaped profile in at least a partial region of the helix, parallel to the principal plane of extension of the helix and perpendicular to the longitudinal direction of the helix.
• the bending point has a bending angle of approximately 180° or less, parallel to the principal plane of extension of the helix and parallel to the longitudinal direction of the helix.
• Adjacent legs of the helix connected by a bending point preferably extend on planes that do not overlap with each other and/or within volumes that do not overlap with each other.
• a "principal extension plane" of a building unit is understood to be, in particular, a plane which is parallel to a largest side face of a smallest imaginary cuboid which just completely encloses the building unit, and in particular passes through the center of the cuboid.
• midpoint of a leg refers specifically to a point on a leg that lies exactly midway between two bends that define the leg. It is conceivable that all first legs of the completed helix run in at least one plane, or that all first legs touch the first plane with at least substantially identical leg sections. It is also conceivable that all second legs of the completed helix run in at least one second plane, or that all second legs touch the second plane with at least substantially identical leg sections. identical leg sections touch. In particular, the first plane and the second plane run parallel to each other. Particularly when viewing the helix along its longitudinal direction, the first legs of the helix overlap at least substantially, preferably completely.
• the second legs of the helix overlap at least substantially, preferably completely.
• at least substantially overlapping means, in particular, that at least 80%, preferably at least 90%, and preferably at least 95% of one leg is covered by another leg in the chosen viewing direction.
• two midpoints of legs lying substantially in one plane means, in particular, that the points have a maximum distance from a common plane that is less than two mean diameters of the longitudinal element, preferably less than one mean diameter of the longitudinal element, and preferably at most 50% of one mean diameter of the longitudinal element.
• the braiding knife is designed, in particular, as a flat, preferably elongated element, preferably a metal element, the longitudinal extent of which is preferably at least twice, preferably at least five times, the maximum transverse extent.
• the braiding knife assembly comprises, in addition to the braiding knife, at least one braiding screw, at least one holding unit for a holder of at least the braiding knife and/or at least the braiding screw, and at least one drive unit for a rotary drive of at least the braiding knife.
• the braiding knife assembly has the usual components of a wire bending machine with a braiding knife and a braiding screw, as well as a usual arrangement of the components of the wire bending machine relative to each other (e.g., arrangement of the braiding knife within the braiding screw).
• a "large part" is defined, in particular, as at least 51%, preferably at least 66%, advantageously at least 80%. preferably at least 90% and especially preferably at least 95%.
• the wire has a tensile strength of at least 1370 N/mm 2 , preferably at least 1770 N/mm 2 and preferably at least 2200 N/mm 2 , a wire mesh with particularly advantageous properties, especially particularly high stability, can be advantageously achieved.
• a wire mesh with particularly advantageous properties especially particularly advantageous elongation properties, can be advantageously achieved.
• a square mesh of the present type i.e., in particular a three-dimensional square mesh, has two equally important, mutually perpendicular preferred elongation directions.
• the helixes are bent by the braiding knife arrangement in such a way that springback, in particular elastic deformation, of the wire of the helixes, which is at least partially made of high-strength steel, is at least substantially compensated in at least one direction transverse to a longitudinal direction of the helixes.
• This advantageously allows a A particularly suitable method for producing helixes of wire mesh netting with especially advantageous net properties can be achieved.
• flat helixes made of high-strength steel can be bent.
• the flat helixes made of high-strength steel can be produced using the weaving knife arrangements.
• the wire is preferably bent such that, after springback, it assumes a predetermined bending position.
• “Substantially compensated” is understood to mean, in particular, at least 80% compensated, preferably at least 90% compensated, and preferably at least 95% compensated.
• the helixes in particular the bending points of the helixes, be bent, especially twisted, by the weaving knife arrangement at least in one direction transverse to the longitudinal direction of the helixes, particularly in at least one process step.
• This advantageously provides a particularly suitable method for the production of helixes for wire mesh netting with particularly advantageous net properties.
• this allows for the bending of flat helixes made of high-strength steel.
• springback of the high-strength steel can be advantageously compensated.
• twisting a helix is understood to mean, in particular, the counter-rotation of adjacent legs of the bending points of the helix in a direction transverse to the longitudinal direction of the helix, which, when the helix is released, leads to a springback of the helix in the direction transverse to the longitudinal direction, wherein, preferably, the legs of the helix overlap at least substantially after the springback when viewed along the longitudinal direction.
• the helixes in particular the bending points of the helixes, be bent, in particular over-bent, by the braiding knife arrangement at least in one direction parallel to the longitudinal direction of the helixes, particularly in at least one process step.
• a particularly suitable method for manufacturing helixes of wire mesh netting with especially advantageous net properties can be achieved.
• helixes made of high-strength steel with a precisely adjustable opening angle at the bending point can be produced, the opening angle being the angle of the bending point when viewed perpendicular to the principal plane of extension of a helix.
• helixes made of high-strength steel with an opening angle of approximately 90° can be produced.
• springback of the high-strength steel can be advantageously compensated.
• the longitudinal direction of a helix corresponds, in particular, to a principal direction of extension of the helix.
• a "principal direction of extension" of an object is understood, in particular, to be a direction that runs parallel to the longest edge of the smallest geometric cuboid that just completely encloses the object.
• over-shocking of a helix is understood to mean, in particular, a compression of the bending points of the helix in the longitudinal direction of the helix, which, when the helix is "released", leads to a springback of the helix in the longitudinal direction, wherein preferably the helix assumes the desired opening angle after the springback.
• the helixes particularly at each bending point in the longitudinal direction of the helixes and/or transversely to the longitudinal direction of the helixes, be bent over by an overbending angle of at least 40° and preferably at least 50°.
• This advantageously provides a particularly suitable method for the production of helixes for wire mesh netting with particularly advantageous net properties.
• this method allows the production of helixes made of different high-strength steels and/or having different wire diameters, which are flat and/or have a precisely adjustable opening angle at the bending point.
• the overbending angle by which a bending point is bent depends on the specific characteristics of the helix.
• the amount of overbending required to achieve a desired end angle depends on the tensile strength of the steel used and the wire diameter. In particular, the required overbending angle increases with increasing tensile strength and/or increasing wire diameter.
• the springback is at least partially compensated by the braiding knife and/or the coils can be overbent by the braiding knife, a particularly rapid, preferably uninterrupted, manufacturing process for flat coils made of high-strength steel can be advantageously achieved using a braiding knife arrangement.
• the longitudinal element is wound around the braiding knife in such a way that the longitudinal element is overbent during the winding process and/or when the length of the braiding knife is draped over the coil.
• a particularly rapid, preferably uninterrupted, manufacturing process for helixes made of high-strength steel with a precisely adjustable opening angle in a view perpendicular to the main plane of extension of a helix, for example an opening angle of approximately 90°, can advantageously be achieved by means of a braiding knife assembly.
• the longitudinal element is guided in a screw thread of the braiding screw in such a way that it is already bent during its guidance in the braiding screw and/or during its passage along the length of the
• the spiral path of the braiding screw can cause the longitudinal element to bend in the longitudinal direction, for example, by having a shallower pitch than the desired helix and/or by having a pitch that decreases towards the exit of the braiding knife assembly.
• the pitch of the spiral path can be manipulated to cause bending, in particular that the spiral path can be compressed or stretched during a bending process.
• the respective helix resting on the braiding knife is pressed against the braiding knife at least in a transition area between a bend point and a first leg adjoining the bend point, and at least in a further transition area between the bend point and a second leg adjoining the bend point, at least partial straightening, in particular flattening, of the helix can advantageously be made possible.
• This advantageously enables particularly simple and/or precise straightening of helixes made of high-strength steel.
• flat helixes made of high-strength steel can thus be produced using the braiding knife arrangements.
• the entire legs can be pressed against the The braiding knife is pressed against the wire.
• the entire legs are pressed against an outer geometry of the braiding knife that corresponds to its cross-section.
• this method can achieve over-pressing, especially by pressing the legs at least partially into the concave recess.
• pressing the legs against the wire can also create other spiral geometries, such as wavy or convex spirals.
• the spiral is preferably pressed in the transition areas using pressure elements that compress these areas with a pincer-like grip.
• a manufacturing device for producing helixes for wire mesh netting comprising the weaving knife arrangement with at least the weaving knife.
• flat helixes made of high-strength steel can be produced using the weaving knife arrangements.
• the weaving knife is designed, in particular, as an elongated flat material, for example, an elongated flat steel bar.
• a raw longitudinal element is wound helically around the weaving knife to form the helix, with the still-unbent portion of the raw longitudinal element being constantly advanced.
• the longitudinal element apart from springback, essentially assumes a shape that follows the outer contour of the weaving knife. It is conceivable that the weaving knife arrangement is designed to... The longitudinal elements are bent simultaneously into a single helix. This allows for a further advantageous increase in production speed.
• the manufacturing device includes a straightening unit designed to straighten, and in particular align, a helix so that at least the centers of the first leg and/or at least the centers of the second leg of a finished, especially convex, helix lie at least substantially in one plane.
• the first legs and/or the second legs of the helix bent by the manufacturing device lie at least largely or completely in the plane.
• the straightening unit is designed to align helixes whose adjacent legs would be rotated relative to each other by an angle, particularly a clearly discernible angle greater than 3°, when viewed in a direction parallel to the longitudinal direction of the helix, without alignment by the straightening unit.
• the alignment unit is designed to prevent the principal directions of extension of adjacent legs of a helix from being angled to each other.
• the alignment unit is designed to align adjacent legs of a helix in such a way that the principal directions of extension of the legs of the helix lie in a common plane.
• the straightening unit is designed to overbend coils, particularly at their bending points, flat coils made of high-strength steel can advantageously be produced using braiding knives.
• the straightening unit is designed to bend at least a portion of the legs connected to the bending point in the longitudinal direction of the to bend the helix and/or perpendicular to the longitudinal direction of the helix towards each other, wherein in particular an actual bending angle is significantly larger than an angle of bending which the finished bent helix ultimately has.
• the straightening unit be formed at least partially integrally with the braiding knife. This allows for a particularly advantageous design of the straightening unit. In particular, such a straightening unit exhibits a preferably low level of complexity.
• the braiding knife is shaped such that the coils are at least partially straightened, and in particular flattened, during a winding process as they pass over the braiding knife.
• the straightening unit be formed at least partially as a single piece with a braiding spiral of the braiding knife assembly.
• a braiding spiral has at least one spiral thread which is designed to form a guide track for guiding the longitudinal element along the braiding knife during the bending process to bend a helix.
• the braiding spiral has a further spiral thread which forms another guide track, thereby advantageously enabling the simultaneous bending of two helixes in the braiding knife assembly.
• the braiding spiral especially the spiral channel of the braiding spiral, is shaped in such a way that helixes, especially bending points of helixes, are straightened, especially stretched or compressed, at least partially, especially along the longitudinal direction of the helixes, during a winding process when passing through the spiral channel of the braiding spiral.
• the straightening unit be arranged at least partially downstream of the braiding knife and/or a braiding spiral of the braiding knife assembly. This advantageously enables particularly precise straightening of helixes.
• the straightening unit can simultaneously be partially formed integrally with the braiding knife, partially formed integrally with the braiding spiral, and/or partially arranged downstream of the braiding knife assembly.
• Integrated is understood to mean, in particular, at least a materially bonded connection, for example, by a welding process, an adhesive bonding process, an injection molding process, and/or another process that would appear appropriate to a person skilled in the art, and/or advantageously formed in one piece, such as by production from a single casting and/or by production using a single- or multi-component injection molding process, and advantageously from a single blank.
• integrated means, in particular, that the units have at least one, in particular at least two, and advantageously at least three common elements that are components, and in particular functionally important components, of both units.
• the braiding knife be made of a flat material, in particular a flat iron, a flat steel, or the like, and that the braiding knife be wound helically at least partially along its longitudinal axis, particularly around a center point of the braiding knife extending along the longitudinal axis.
• This allows for a particularly advantageous design of the straightening unit.
• such a straightening unit exhibits a preferably low level of complexity.
• this advantageously enables the production of a planar helix from high-strength steel using a braiding knife arrangement.
• the longitudinal axis of the braiding knife preferably runs parallel to a principal extension direction of the braiding knife.
• helical twist refers to a section of the weaving knife along its longitudinal axis. This section comprises, in particular, at least 10%, preferably at least 20%, advantageously at least 30%, preferably at least 50%, and most preferably at most 80% of the total length of the weaving knife along its longitudinal axis.
• the phrase "helically twisted” means, in particular, that at least the opposing narrow outer edges and/or the opposing narrow outer surfaces of the flat weaving knife describe helical paths in the twisted area. These paths are offset from each other by approximately half a pitch and wind around a common, essentially linear center.
• a helically twisted section of the weaving knife is twisted at an angle ⁇ , wherein the angle ⁇ is greater than 45°, preferably greater than 90°, and more preferably greater than 180°, an overbending, in particular an overtwisting, of a bending point of a helix can advantageously be achieved, whereby the helix, which consists of high-strength steel, can be advantageously straightened, in particular flattened.
• the angle ⁇ is in particular designed as an angle that a narrow outer edge and/or a narrow outer surface of the weaving knife sweeps over an entire twisted area of the weaving knife.
• the braiding knife be twisted multiple times. This advantageously enables particularly effective straightening, especially leveling, and/or particularly strong overbending. Multiple twisting corresponds in particular to an angle ⁇ of more than 360°, preferably at least 720°.
• the braiding knife be twisted by at least 10°, preferably at least 20°, advantageously at least 30°, particularly advantageously at least 40°, preferably at least 50°, and most preferably at most 90° in a region over which a spiral of the helix extends when bent by means of the braiding knife arrangement.
• This advantageously enables particularly effective overbending and/or particularly precise straightening, especially flattening, of the helix.
• a spiral of the helix corresponds in particular to a region of the helix in which the helix is twisted by 360°.
• a spiral of the helix comprises two entire bending points, an entire first leg and an entire second leg.
• the braiding knife have a cross-section whose shape, particularly at a narrow outer edge and/or on a narrow outer surface of the braiding knife, comprises at least a semicircle.
• the shape of the cross-section of the braiding knife comprises at least one further semicircle at another narrow outer edge and/or on another narrow outer surface of the braiding knife.
• damage to the longitudinal elements can be avoided by rounding the outer edges. Longitudinal elements made of high-strength steel exhibit increased brittleness, which is why bending them around a sharp edge can lead to breakage. The proposed design advantageously reduces this risk of breakage.
• the cross-section of the braiding knife can also have four rounded edges, e.g., four quarter circles.
• the braiding knife has a cross-section whose shape includes at least one partial circle larger than a semicircle, the braiding knife advantageously has a recess that allows the helix to be pressed over the knife by pressing it against the recess. This advantageously enables the helix to be straightened directly on the braiding knife.
• the braiding knife has a cross-section whose shape exhibits a convex or concave curvature on at least one, particularly long, side surface. This advantageously allows for at least partial straightening of a helix and/or adjustment of the helix's geometry.
• a concave curvature enables the helix to be forced over the braiding knife by pressing it against the knife, for example, by means of a pressing element.
• a convex curvature allows for the production of a helix with outwardly curved legs.
• the braiding knife can have a convex curvature on both, particularly long, side surfaces, or a concave curvature on both, particularly long, side surfaces.
• one, particularly long, side surface has a convex curvature and another, particularly long, side surface has a concave curvature.
• the side surface, especially the long one is specifically designed as the surface of the braiding knife, along which the legs of the helix extend during a bending process.
• the cross-sectional shape of the braiding knife exhibit a convex or concave curvature on at least one of the second faces opposite the first. This advantageously allows for at least partial straightening of a helix and/or adjustment of the helix geometry.
• the degree of curvature of the convex surface of the weaving knife or the degree of indentation of the concave surface of the weaving knife is adjustable, it is advantageous to set the geometry of a finished bent helix and/or adapt the shape of the weaving knife to a specific type of longitudinal element, for example, depending on the springback factor, tensile strength, or diameter of the longitudinal element.
• the weaving knife can, for example, have movable surface elements.
• the weaving knife could have a fastening device that allows for the assembly and/or disassembly of interchangeable surface elements.
• the braiding knife and/or a braiding spiral of the braiding knife arrangement is made at least to a large extent from a material with a Vickers hardness of more than 600 HV 10, it is advantageous to be able to process longitudinal elements made of materials with particularly high hardness and/or with particularly high tensile strengths, especially without causing damage or increased wear of the braiding knife and/or the braiding spiral.
• the manufacturing device includes a braiding screw having a screw thread with a thread pitch angle that is less than half the opening angle of a bend in a helix bent with the braiding knife and the braiding screw.
• a braiding screw having a screw thread with a thread pitch angle that is less than half the opening angle of a bend in a helix bent with the braiding knife and the braiding screw.
• the pitch of the spiral of the braiding screw is less than 0.9 times, preferably less than 0.8 times, half the opening angle of the bending point of the helix bent with the braiding knife and the braiding screw, it is advantageous to be able to precisely adjust the mesh shape of helixes made of high-strength steel, in particular the angle of the bending point in a view perpendicular to the main extension plane of the helix.
• the braiding spiral has a spiral channel with a variable channel angle, a gradual overbending can be advantageously enabled. This allows for the beneficial minimization of stresses.
• the straightening unit include a pressing device designed, at least in part, to straighten a helix by pressing it against the weaving knife, and in particular to align it flat.
• a pressing device designed, at least in part, to straighten a helix by pressing it against the weaving knife, and in particular to align it flat.
• the pressing device has at least one pressing element adapted to an outer shape of the braiding knife, in particular a helical shape and/or a concave and/or convex curved shape of the braiding knife, a particularly efficient straightening process can advantageously be achieved.
• the pressing element has, at least in a contact area intended for pressing the helix against the braiding knife, a shape that is adapted to the The outer shape of the weaving knife is at least partially, and at least essentially, a complementary outer shape. It is conceivable that the pressing element moves along the longitudinal axis of the weaving knife, at least partially, together with the following longitudinal element, and in particular synchronously.
• the pressing device comprises at least one pressing element designed to press a helix wound on the weaving knife against the weaving knife, particularly at specific points, in at least one transition area of the helix, preferably in at least two transition areas, located between a bend point of the helix and at least one leg of the helix adjacent to the bend point.
• At least the pressing element is movably mounted and is designed to follow at least a partial rotational movement of the braiding knife, a particularly effective straightening process can be advantageously achieved, especially since an interruption of the rotational movement of the braiding knife for pressing can be kept as short as possible or preferably an interruption of the rotational movement of the braiding knife can be dispensed with.
• a wire mesh device in particular a wire mesh, preferably a safety wire mesh, comprising a plurality of interconnected, in particular intertwined, helixes, of which at least one helix is made of at least one longitudinal element, in particular a single wire, a wire bundle, a wire strand and/or a wire rope, with at least one wire, at least partially made of high-strength steel, and comprises at least one first leg, at least one second leg and at least one bend connecting the first leg and the second leg, wherein the interconnected helixes form a square mesh shape in a frontal view perpendicular to a principal plane of extension of the helixes, and wherein the legs of the interconnected helixes are convex, in particular curved outwards, in a transverse view parallel to the principal plane of extension of the helixes.
• a square mesh shape ensures that the wire mesh net has at least two preferred directions of elongation.
• forces occur that can act circularly in all directions. Such forces can be absorbed more effectively with a square mesh net than with, for example, a square mesh net.
• a wire mesh with diamond-shaped meshes the energy absorption capacity of the wire mesh can be further improved, particularly through the combination with the convex shape of the legs of the helix. The convex shape of the legs allows the spring properties of the high-strength steel to be advantageously utilized for additional energy absorption.
• At least a portion of the energy introduced into the wire mesh during an impact can be advantageously absorbed by the convex shape of the legs bending, particularly elastically, before plastic deformation of the helix occurs.
• the convex shape of the legs also advantageously gives the wire mesh further improved elongation properties.
• the maximum possible elastic elongation of the wire mesh is advantageously increased.
• convexly curved refers specifically to the fact that the leg is curved, preferably clockwise, around its midpoint, at least in a central region.
• the bulbous curvature of the legs of the interconnected helixes viewed in cross-section, particularly in the central region around the midpoint of the leg, has a radius of curvature of at most 50 cm, preferably at most 30 cm, advantageously at most 17 cm, particularly advantageously at most 15 cm, preferably at most 10 cm and particularly preferably at least 5 cm, particularly good elongation properties and/or particularly good energy absorption properties can be advantageously achieved.
• the bulbous curvature of the legs of the interconnected helixes viewed in cross-section, particularly in the central region around the midpoint of the leg, has a radius of curvature of at least 3 cm, preferably at least 5 cm, advantageously at least 7 cm, particularly advantageously at least 10 cm, preferably at least 13 cm, and most preferably at most 15 cm, advantageously particularly good elongation properties and/or particularly good Energy absorption properties are achieved while maintaining sufficient stability.
• the square mesh has an edge length of at least 3 cm, preferably at least 5 cm, and preferably at least 7 cm, advantageously good retention properties of the mesh can also be achieved for smaller impact objects.
• such a mesh size also advantageously allows for easy installation with commercially available rock anchors.
• the square mesh shape has an edge length of at most 20 cm, preferably at most 15 cm and preferably at most 10 cm, advantageously good retention properties of the mesh net can be achieved, i.e. sufficient safety for a variety of applications with the lowest possible mesh net weight.
• a wire mesh with an increased spring travel can advantageously be created, thereby achieving advantageously improved energy absorption properties and/or advantageously improved elongation properties.
• a sufficiently high stability of the wire mesh can advantageously be achieved while simultaneously achieving advantageous energy absorption and/or elongation properties.
• the radius of curvature of the bulging curve of at least one helix should be at least smaller than that of the majority of helixes.
• the shape of a further helix varies considerably among the majority of helixes. This allows for advantageous multi-stage energy absorption, or, in the case of two different helix types within a wire mesh, for example, two-stage energy absorption. This is achieved, for instance, by first absorbing a large portion of the tensile force on the wire mesh by helixes with smaller radii of curvature when a tensile force is applied. Only when the applied tensile force increases are the other helixes with larger radii of curvature subjected to the same load. This allows for the creation of a wire mesh with particularly advantageous load-bearing properties.
• the longitudinal element consisting of high-strength steel wire, has a diameter of at least 2 mm, preferably at least 3 mm, advantageously at least 4 mm, preferably at least 5 mm, and particularly preferably at most 6 mm.
• the longitudinal element advantageously has a diameter of 4.6 mm.
• Test trials have shown that wire mesh with a particularly favorable weight-to-area ratio can be manufactured from longitudinal elements of this diameter, making it especially suitable for use in underground mining, as the weight-to-area ratio of these wire meshes is particularly suitable for handling and installation by standard underground mining machinery.
• the wire mesh with longitudinal elements of this diameter offers particularly good protection against most rockfall events typically occurring in underground mining, while maintaining the lowest possible weight per unit area.
• the mean maximum vertical distance between two convexly curved legs of a helix be at least 4 times, preferably
• the diameter of the longitudinal element of the helix, in particular the helix itself, is at least 6 times, preferably at least 10 times, and particularly preferably at most 20 times.
• a maximum vertical distance between two convexly curved legs of a helix, particularly as seen in a view along the longitudinal direction of a helix is at least 1.02 times, preferably at least 1.03 times, preferably at least 1.05 times, and particularly preferably at least 1.15 times, the minimum, in particular vertical, distance between the two convexly curved legs of the helix, arranged outside the bending point and outside the transition area, particularly as seen in a view along the longitudinal direction of a helix.
• a mesh formed by the connected helixes and fully spread out on a flat surface has a waviness W of at least 2* D , preferably 5*D, where the parameter D, viewed in cross-section on the helixes of the mesh, corresponds to a mean maximum perpendicular distance between two legs of a helix of the mesh connected by a bend.
• the use of the wire mesh device for collecting and/or retaining rock in mining, slope stabilization, rockfall and/or avalanche protection, or the like, and/or the use of the wire mesh device for collecting This has been proposed for vehicles, for example in motorsport or for counter-terrorism purposes. This can advantageously achieve a high level of safety, particularly due to the increased energy absorption and/or elongation properties.
• the use of the wire mesh device for the frictional locking of a nut is proposed.
• This allows for the creation of a particularly advantageous and low-complexity screw locking system.
• the springback properties of the high-strength steel are combined with the three-dimensional, energy-absorbing geometry of the wire mesh in a meaningful and surprising way.
• the wire mesh is designed to press a nut, clamped in a direction perpendicular to the main plane of extension of the wire mesh, against the direction of clamping, thus achieving a frictional locking of the nut, comparable to the function of a spring washer.
• inventive method for producing coils, the inventive manufacturing device for producing coils, the inventive wire mesh device, and/or the inventive uses of the wire mesh device are not/should not be limited to the application and embodiment described above.
• inventive method for producing coils, the inventive manufacturing device for producing coils, the inventive wire mesh device, and/or the inventive uses of the wire mesh device may, to achieve a functionality described herein, comprise a different number of individual elements, components, and units than the number specified herein.
• FIG. 1 Figure 1 shows part of a wire mesh net device.
• the wire mesh net device forms a wire mesh net 12a.
• the wire mesh net 12a forms a safety wire mesh net, which is intended for use as a catch and/or retention net for catching and/or retaining rock in mining, slope stabilization, rockfall and/or avalanche protection, or the like, and/or for catching vehicles, for example in motorsport or in counter-terrorism operations.
• the wire mesh device comprises at least one helix 10a.
• the wire mesh device comprises at least one further helix 102a.
• the helix 10a and the further helix 102a are essentially identical to each other.
• at least a portion of the helixes 10a, 102a can be configured differently from the remainder of the helixes 10a, 102a of a wire mesh 12a (see also Fig. 13
• the wire mesh 12a comprises a plurality of interconnected helixes 10a, 102a. Adjacent helixes 10a, 102a are connected by twisting them together.
• FIG. 2 Figure 1 shows a section of the wire mesh 12a in a schematic front view.
• the helixes 10a and 102a are each made from a longitudinal element 14a with at least one wire 30a.
• the longitudinal element 14a is formed as a single wire.
• the wire 30a forms the longitudinal element 14a.
• the longitudinal element 14a is bent to form the helix 10a.
• the helix 10a and 102a is formed in one piece.
• the helix 10a and 102a is made from a single piece of wire.
• the longitudinal element 14a is formed as a bundle of wire, a strand of wire, a wire rope, or the like.
• the wire 30a is made entirely of wire.
• the wire 30a made of high-strength steel, has a tensile strength of 1770 N/ mm2 in the illustrated embodiment.
• the longitudinal element 14a in particular the wire 30a, has a diameter 104a of 4.6 mm in the illustrated embodiment.
• the wire 30a could have a different diameter 104a, such as less than 1 mm, or approximately 1 mm, or approximately 2 mm, or approximately 4 mm, or approximately 5 mm, or approximately 6 mm, or an even larger diameter 104a.
• the helix 10a, 102a has a first leg 16a.
• the helix 10a, 102a has a second leg 18a.
• the helix 10a, 102a has a bend 20a connecting the first leg 16a and the second leg 18a.
• the helix 10a, 102a has a plurality of first legs 16a, a plurality of second legs 18a, and a plurality of bends 20a, not all of which are labeled with reference numerals for the sake of clarity.
• the first legs 16a are at least substantially identical to each other.
• the second legs 18a are also at least substantially identical to each other.
• the bends 20a are at least substantially identical to each other.
• first leg 16a, the second leg 18a, and the bending point 20a are described in more detail below as examples.
• the wire mesh 12a has different first legs 16a and/or different second legs 18a and/or different bending points 20a.
• the helix 10a, 102a has a transition region 42a.
• the transition region 42a is formed by the region that lies between a bend 20a of the helix 10a, 102a and at least one first leg 16a of the helix 10a, 102a adjacent to the bend 20a.
• the helix 10a, 102a has a further transition region 44a.
• the further transition region 44a is formed by the region that lies between a The bending point 20a of the helix 10a, 102a and at least one second leg 18a of the helix 10a, 102a adjacent to the bending point 20a is located.
• the helix 10a, 102a has a longitudinal direction 34a.
• the longitudinal direction 34a corresponds to a principal extension direction of the helix 10a, 102a.
• the first leg 16a runs at an angle of inclination 112a with respect to the longitudinal direction 34a of the helix 10a, 102a.
• the angle of inclination 112a is approximately 45°.
• the frontal view is a view in a frontal direction 114a (see Fig. 3a).
• the connected helixes 10a, 102a form meshes 116a in the frontal view perpendicular to the principal extension plane of the helixes 10a, 102a.
• the meshes 116a have a mesh shape 32a that is at least substantially square.
• the meshes 116a of the square mesh shape 32a each contain four substantially right angles at their corners.
• the legs 16a and 18a that bound the meshes 116a of the square mesh shape 32a are substantially the same length.
• the square mesh shape 32a has an edge length 98a of 5 cm.
• the edge length 98a corresponds to the length of the first leg 16a.
• the edge length 98a corresponds to the length of the second leg 18a.
• the square mesh shape 32a has a different edge length 98a, for example, 3 cm, 4 cm, 6 cm, 7 cm, 10 cm, or more than 10 cm.
• FIG. 3 Figure 1 shows a section of the helixes 10a, 102a of the wire mesh 12a, comprising the first leg 16a, the second leg 18a, and the bending point 20a, viewed along the longitudinal direction 34a of the helixes 10a, 102a.
• the helixes 10a, 102a of the wire mesh 12a touch at their respective bending points 20a.
• the first leg 16a of the interconnected helixes 10a, 102a is convexly arched parallel to the main plane of extension of the helixes 10a, 102a.
• the first leg 16a exhibits a first convex bulge 94a.
• the second leg 18a of the interconnected helixes 10a, 102a is in the Viewed from the side, parallel to the main plane of extension of the helixes 10a, 102a, the second leg 18a exhibits a second bulging curve 118a.
• Legs 16a, 18a are curved outwards from the main plane of extension of the wire mesh 12a.
• the first leg 16a of the helix 10a is curved in a direction perpendicular to the longitudinal direction 34a of the helix 10a and perpendicular to the main plane of extension of the wire mesh 12a.
• the second leg 18a of the helix 10a is curved in a direction perpendicular to the longitudinal direction 34a of the helix 10a and perpendicular to the main plane of extension of the wire mesh 12a.
• the bulbous bulges 94a, 118a of legs 16a, 18a point in directions away from each other, in particular opposite directions. Viewed along the longitudinal direction 34a of the helixes 10a, 102a, the helixes 10a, 102a exhibit a shape that is at least substantially elliptical. Apart from their opposing orientation, the bulbous bulges 94a, 118a of legs 16a, 18a are essentially identical in form.
• the cross-sectional view is a view along the longitudinal direction 34a of the helixes 10a, 102a.
• the first leg 16a has a midpoint 26a.
• the midpoint 26a of the first leg 16a is located at the center of the first leg 16a's overall extension, between two adjacent bends 20a of the helix 10a.
• the convex curve 94a of the first leg 16a has a radius of curvature 96a of less than 17 cm in a central region around the midpoint 26a of the first leg 16a.
• the convex curve 94a of the first leg 16a has a radius of curvature 96a of 15 cm in the central region around the midpoint 26a of the first leg 16a when viewed from the side.
• the bulbous curve 94a of the first leg 16a can also have a radius of curvature 96a of more than 17 cm.
• the central region around the midpoint 26a of the first leg 16a extends uniformly from the midpoint 26a in both directions of the first leg 16a over 50% of the The entire extent of the first leg 16a.
• the second leg 18a has a midpoint 28a.
• the midpoint 28a of the second leg 18a is located at the midpoint of the entire extent of the second leg 18a between two adjacent bends 20a of the helix 10a.
• the convex curve 118a of the second leg 18a has a radius of curvature 120a of less than 17 cm in a central region around the midpoint 28a of the second leg 18a.
• the convex curve 118a of the second leg 18a has a radius of curvature 120a of 15 cm in the central region around the midpoint 28a of the second leg 18a when viewed from the side.
• the bulbous curve 118a of the second leg 18a can also have a radius of curvature 120a of more than 17 cm.
• the central region around the midpoint 28a of the second leg 18a extends uniformly from the midpoint 28a in both directions of the second leg 18a over 50% of the total extent of the second leg 18a.
• the helixes 10a, 102a are bent at the bending point 20a by a bending angle 100a of less than 180°.
• the helixes 10a, 102a are bent at the bending point 20a by a bending angle 100a of more than 145°.
• the helixes 10a, 102a are bent at the bending point 20a by a bending angle 100a of approximately 175°.
• the mean maximum vertical distance 106a between the convexly curved legs 16a, 18a of a helix 10a, connected by bends 20a, is at least 4 times and at most 20 times the diameter 104a of the longitudinal element 14a of the helixes 10a, 102a. In the case shown, the mean maximum vertical distance 106a is 4 times the diameter 104a of the helix 10a.
• the Fig. 4 shows a schematic view of part of the helix 10a from a viewing direction parallel to the main extension plane of the wire mesh. 12a and perpendicular to the longitudinal direction 34a of the helix 10a.
• the bending point 20a of the helix 10a has an S-shape 122a.
• the bulbous bulges 94a, 118a are also clearly visible from this perspective.
• the bulbous bulges 94a, 118a result in, in particular, an increased spring capacity under forces which in the, in Fig. 4 act on the wire mesh 12a in the frontal direction 114a indicated by an arrow or in a direction opposite to the frontal direction 114a.
• Figure 1 shows a schematic view of a portion of the wire mesh 12a from a perspective parallel to the main plane of extension of the wire mesh 12a and perpendicular to the longitudinal direction 34a of the helix 10a.
• the wire mesh 12a is fully spread out on a flat surface 108a.
• the parameter D corresponds to the mean maximum perpendicular spacing 106a.
• FIG. 6 Figure 1 shows a schematic representation of the use of the wire mesh device, in particular the wire mesh 12a, for the force-fit securing of a nut 110a.
• the wire mesh 12a rests on a surface 108a.
• a ground anchor 124a is inserted into the substrate forming the surface 108a, for example by drilling.
• the ground anchor 124a is designed as a threaded rod with a thread 126a.
• the ground anchor 124a passes through the wire mesh 12a.
• the nut 110a is screwed onto the ground anchor 124a.
• the nut 110a or a flat washer 180a of the nut 110a has a diameter that is larger than the mesh 116a of the wire mesh 12a.
• the wire mesh 12a is clamped between the surface 108a and the nut 110a.
• the convex curves 94a, 118a of the legs 16a, 18a of the helixes 10a, 102a give the wire mesh 12a a spring capacity.
• the bulbous bulges 94a, 118a are elastically deformed, i.e., bent in the opposite direction to any bulging. This causes the nut 110a to be pressed by the wire mesh 12a in a direction away from the surface 108a, resulting in a frictional engagement between the nut 110a and the thread 126a of the ground anchor 124a.
• FIG. 7a Figure 46a shows a schematic view of a manufacturing device for producing helixes 10a, 102a.
• the manufacturing device 46a has a braiding knife assembly 24a.
• the braiding knife assembly 24a includes a braiding knife 22a.
• the braiding knife 22a is designed to wind up an initially straight longitudinal element 14a.
• the braiding knife assembly 24a has a braiding spiral 38a.
• the braiding spiral 38a is designed to guide the longitudinal element 14a wound onto the braiding knife 22a.
• the braiding spiral 38a is largely made of a material with a Vickers hardness of more than 600 HV 10.
• the braiding spiral 38a comprises at least one spiral thread 64a along which the longitudinal element 14a wound onto the braiding knife 22a is guided.
• the helical passage 64a comprises a plurality of turns.
• the braiding screw 38a has a single screw flight 64a.
• a braiding screw 38'a can have a second screw flight 64'a to increase production capacity (see figure).
• Fig. 7b ).
• the braiding knife assembly 24a comprises a holding unit 82a.
• the holding unit 82a is designed to provide a rotationally fixed support for the braiding spiral 38a.
• the holding unit 82a allows and/or can generate rotation of the braiding spiral 38a, in particular in a direction of rotation opposite to a direction of rotation of the braiding knife 22a.
• the holding unit 82a has a braiding spiral holding element 128a.
• the braiding spiral holding element 128a is designed to provide a detachable, stationary support for at least one braiding spiral 38a.
• the The braiding knife arrangement 24a comprises several braiding spirals 38a arranged in a row.
• the holding unit 82a has a braiding knife holding element 130a.
• the braiding knife holding element 130a is designed to hold and/or guide the braiding knife 22a.
• the braiding knife holding element 130a includes an opening 132a, preferably round, within which the braiding knife 22a is guided.
• the braiding knife holding element 130a is arranged in a braiding direction 134a of the braiding knife 22a upstream of the longitudinal element 14a being fed to the braiding knife 22a.
• the braiding knife arrangement 24a includes a drive unit 84a.
• the drive unit 84a is designed to generate a rotational movement of the braiding knife 22a.
• the manufacturing device 46a has a control and/or regulating unit 80a.
• the control unit 80a is designed to control the drive unit 84a.
• the braiding knife 22a is arranged within the braiding screw 38a.
• the braiding knife 22a is designed to rotate within the braiding screw 38a.
• the braiding knife assembly 24a includes a longitudinal element feed device 136a.
• the longitudinal element feed device 136a is designed to align an as-yet-unbent longitudinal element 14a relative to the braiding knife 22a and feed it to the braiding knife 22a.
• the manufacturing device 46a includes a straightening unit 40a.
• the straightening unit 40a is designed to straighten a helix 10a, 102a such that at least the centers 26a of the first leg 16a of a finished helix 10a, 102a lie in a common plane.
• the straightening unit 40a is also designed to straighten a helix 10a, 102a such that at least the centers 28a of the second leg 18a of the finished helix 10a, 102a lie in a further common plane.
• the common plane and the further common plane are preferably free of mutual lines of intersection.
• a part 152a of the alignment unit 40a is arranged in a region of the braiding knife 22a and a further part 142a of the alignment unit 40a is connected to the braiding knife 22a and the braiding spiral 38a, in particular the entire
• the braiding knife arrangement 24a is arranged downstream.
• the straightening unit 40a is designed to overbend helixes 10a, 102a at their bending points 20a.
• the straightening unit 40a is designed to compensate for springback of the helixes 10a, 102a during a bending operation.
• the straightening unit 40a is designed to set desired geometries of the helixes 10a, 102a, for example, the square mesh shape 32a, and/or desired angles of the helixes 10a, 102a, for example, the pitch angle 112a, the angle ⁇ , an opening angle 68a of the bending point 20a, or the bending angle 100a of the bending point 20a.
• the straightening unit 40a is partially formed integrally with the braiding spiral 38a.
• the braiding spiral 38a has a pitch angle 66a.
• the pitch angle 66a of the braiding spiral 38a which partially forms a straightening unit 40a, is less than half the opening angle 68a of a bending point 20a of a helix 10a, 102a that has been bent with the braiding knife 22a and the braiding spiral 38a. This causes the helix 10a, 102a to be bent in the longitudinal direction 34a.
• the pitch 70a of the spiral thread 64a of the braiding spiral 38a is less than 0.9 times half the opening angle 68a of the bending point 20a of the helix 10a, 102a, which has been bent with the braiding knife 22a and the braiding spiral 38a.
• the pitch 70a of the spiral thread 64a corresponds to the thread pitch angle 66a.
• FIG. 8a Figure 2 shows a schematic view of the braiding knife 22a.
• a wire 30a is wound onto the braiding knife 22a shown.
• the braiding knife 22a is made of a flat material.
• the braiding knife 22a is formed as a flat steel.
• the braiding knife 22a is formed in one piece.
• the braiding knife 22a is made of a material with a Vickers hardness of more than 600 HV 10.
• the braiding knife 22a has a longitudinal axis 48a.
• the braiding knife 22a is designed to rotate about the longitudinal axis 48a in a braiding operation.
• the braiding knife 22a has a section 138a along which the braiding knife 22a is helically wound along the longitudinal axis 48a of the braiding knife 22a.
• the helically wound Section 138a of the braiding knife 22a is twisted by an angle ⁇ .
• the angle ⁇ is greater than 45°. In the illustrated embodiment, the angle ⁇ is 60° (see figure).
• Fig. 8b The angle ⁇ can satisfy an equation ⁇ ⁇ (1 - r)*180°, where r is a springback factor of the helixes 10a, 102a made of high-strength steel.
• the braiding knife 22a is twisted by at least 10° in a region 50a over which a spiral turn 140a of the helix 10a, 102a extends when a helix 10a, 102a is bent.
• a "spiral turn" 140a of the helix 10a, 102a is understood to mean, in particular, a complete 360° turn of the helix 10a, 102a.
• the straightening unit 40a is partially formed integrally with the weaving knife 22a.
• the twisted section 138a of the weaving knife 22a is designed to straighten the helix 10a, 102a, in particular the bending angle 100a of the helix 10a, 102a.
• the twisted section 138a of the weaving knife 22a is designed to overbend the helix 10a, 102a, in particular the bending angle 100a of the helix 10a, 102a.
• the weaving knife 22a is specifically designed to overbend the helix 10a, 102a by an overbend angle 36a (see figure). Fig. 8c ) to overbend.
• the overbending angle 36a produced by the braiding knife 22a corresponds in particular to an angle by which the braiding knife 22a is twisted over half of the area 50a over which a spiral turn 140a of the helix 10a, 102a extends when a helix 10a, 102a is bent.
• the overbending angle 36a required for bending a longitudinal element 14a made of high-strength steel by 180° is greater than 20°.
• Fig. 8c To illustrate the overbending angle 36a, the figure shows the bending process of a wire piece 174a, 174'a, 174"a made of high-strength steel.
• An unswept, straight wire piece 174a is shown with hatching.
• the wire piece 174'a with a completed bend 176a is represented by a solid line.
• the fully bent wire piece 174'a has a bend 176a with a bend angle 178a.
• the overbent wire piece 174"a is shown by a dashed line.
• the wire piece springs back. 174a back by the overbending angle 36a.
• the wire piece 174a In order to obtain the wire piece 174'a with the bend 176a, i.e. to achieve the bending angle 178a, the wire piece 174a must therefore be bent by the bending angle 178a and by the overbending angle 36a.
• FIG. 9 Figure 2 shows a schematic vertical section through the weaving knife 22a at an unwound point of the weaving knife 22a.
• the weaving knife 22a has one long side 144a and another long side 146a opposite the long side 144a.
• the weaving knife 22a has two narrow sides 148a and 150a connecting the long sides 144a and 146a.
• the cross-section 54a of the weaving knife 22a comprises at least one semicircle. This semicircle is located on the narrow side 148a.
• the cross-section 54a of the weaving knife 22a comprises at least one further semicircle. This further semicircle is located on the further narrow side 148a opposite the narrow side 148a.
• the cross-section 54 of the weaving knife 22a includes partial circles on its narrow sides 148a and 150a, which are larger than semicircles.
• the cross-section 54a of the weaving knife 22a has a concave curve 62a on a first side surface 56a.
• the first side surface 56a is located on the long side 144a of the weaving knife 22a.
• the cross-section 54a of the weaving knife 22a has a concave curve 62a on a second side surface 58a opposite the first side surface 56a.
• the second side surface 58a is located on the other long side 146a of the weaving knife 22a.
• the concave curves 62a of the weaving knife 22a are located at an unwound point on the weaving knife 22a.
• the braiding knife 22a has a concave curve 62a at a twisted point.
• the concave curve 62a is intended to allow the legs 16a, 18a of the helixes 10a, 102a to be bent over during a manufacturing process by pressing the helix 10a, 102a into a recess of the concave curve 62a.
• the degree of curvature of the concave curve 62a of the braiding knife 22a is adjustable.
• the braiding knife 22a has surface elements. 86a.
• the surface elements 86a are detachably attached to the weaving knife 22a, particularly in the area of the concave curve 62a of the weaving knife 22a.
• the surface elements 86a are interchangeable. By replacing the surface elements 86a, the shape of the weaving knife 22a in the area of the concave curve 62a and/or the depth of the concave curve 62a of the weaving knife 22a can be determined. Alternatively, it is conceivable that the surface elements 86a themselves are shape-changeable or that their distance from a center of the weaving knife 22a is adjustable.
• a possible overbending angle 36a can be set by mounting suitable surface elements 86a.
• a concave curve 62a can be transformed into a convex curve 60a, particularly if an increased radius of curvature 96a of legs 16a, 18a of helixes 10a, 102a is desired or intended. Accordingly, it is conceivable that the extent of a bulge of a convex curve 60a (see also Fig. 16 ) of the braiding knife 22a can be inserted and/or adjusted.
• FIG. 10 Figure 1 shows a schematic vertical section through the braiding knife 22a at a point on the braiding knife 22a with a concave curve 62a, and a schematic vertical section through a part 152a of the straightening unit 40a located in the area of the braiding knife 22a.
• the straightening unit 40a has a pressing device 74a.
• the pressing device 74a is designed to at least partially straighten a helix 10a, 102a by pressing it against the braiding knife 22a.
• the pressing device 74a has a first pressing element 76a.
• the pressing device 74a has a second pressing element 154a.
• the pressing elements 76a, 154a are designed to press a helix 10a, 102a wound on the braiding knife 22a against the braiding knife 22a.
• the pressing elements 76a, 154a are designed to press the helix 10a, 102a wound on the braiding knife 22a against the braiding knife 22a, at least in the transition areas 42a, 44a of the helix 10a, 102a.
• the pressing elements 76a, 154a are located on opposite sides of the braiding knife 22a.
• the pressing elements 76a, 154a are designed to press the respective legs 16a, 18a of the helixes 10a, 102a against the braiding knife 22a in a pincer-like manner.
• the pressing elements 76a, 154a are designed to press the legs 16a, 18a of the helixes 10a, 102a together.
• the in Fig. 10 The illustrated pressing device 74a has two pairs of pressing elements 76a, 154a, which are designed to press the transition areas 42a, 44a of various successive bending points 20a along a helical shape of the coils 10a, 102a against the braiding knife 22a. Further additional pairs of pressing elements 76a, 154a are conceivable.
• the pressing elements 76a, 154a are movably mounted.
• the pressing elements 76a, 154a are designed to follow, at least partially, a movement of the helix 10a, 102a along the braiding knife 22a by means of the movable mounting.
• the pressing elements 76a, 154a are designed to follow, at least partially, a rotational movement of the braiding knife 22a by means of the movable mounting.
• the pressing elements 76a, 154a are designed to follow, at least partially, a rotational and translational movement, in particular a helical path, of the helix 10a, 102a on the braiding knife 22a by means of the movable mounting.
• the pressure elements 76a, 154a are designed to exert, in particular, repeatedly short-term pressure force pulses on the transition areas 42a, 44a of the helixes 10a, 102a.
• FIG. 11 Figure 1 shows a schematic view of the further part 142a of the straightening unit 40a, which is located downstream of the braiding knife 22a.
• the downstream part 142a of the straightening unit 40a has straightening elements 78a, 90a that rotate in opposite directions.
• the straightening elements 78a, 90a which rotate in opposite directions, are designed to straighten the helixes 10a, 102a by overbending the bending points 20a.
• the straightening elements 78a, 90a are designed to straighten at least partial sections of a helix 10a, 102a by rotating adjacent straightening elements 78a, 90a in opposite directions around a central axis.
• the longitudinal axis 92a of the helix 10a is to be bent.
• Adjacent straightening elements 78a, 90a are provided to hold adjacent legs 16a, 18a of helixes 10a, 102a, for example by clamping, and then to twist the adjacent legs 16a, 18a relative to each other until a required bending angle 36a is reached and then release them again.
• the straightening unit 40a has a plurality of straightening elements 78a, 90a arranged in a row.
• the total number of straightening elements 78a, 90a of the straightening unit 40a is equal to the total number of bending points 20a of the helix 10a, 102a plus one.
• the manufacturing device 46a has a further drive unit 88a.
• the additional drive unit 88a is designed to generate the counter-rotating and/or counter-rotating longitudinal displacement of the alignment elements 78a, 90a.
• the control unit 80a is designed to control the additional drive unit 88a.
• the straightening elements 78a, 90a of the straightening unit 40a are longitudinally displaceable in opposite directions to each other in directions parallel to the longitudinal axis 48a of the weaving knife 22a.
• the longitudinally displaceable straightening elements 78a, 90a are intended to pull apart sections of helixes 10a, 102a in the longitudinal direction 34a of the helixes 10a, 102a.
• the longitudinally displaceable straightening elements 78a, 90a are intended to adjust the opening angle 68a of bending points 20a of helixes 10a, 102a by overbending the bending points 20a.
• Adjacent straightening elements 78a, 90a are designed to hold adjacent legs 16a, 18a of helixes 10a, 102a, for example by clamping them, and then to pull the adjacent legs 16a, 18a apart until a required overbending angle 36a is reached and then release them again.
• Adjacent straightening elements 78a, 90a are designed to hold adjacent legs 16a, 18a of helixes 10a, 102a, for example by clamping them, and then to pull the adjacent legs 16a, 18a apart until a required overbending angle 36a is reached and then release them again.
• a section of the helix 10a, 102a comprising several bending points 20a, or the entire helix 10a, 102a is pulled apart by two longitudinally displaceable straightening elements 78a, 90a.
• FIG. 12 Figure 1 shows a flowchart of a process for manufacturing the helixes 10a, 102a of the wire mesh 12a.
• a longitudinal element 14a is unwound from a bobbin and fed to the weaving knife 22a by the longitudinal element feed device 136a.
• the longitudinal element 14a is bent into a helix 10a, 102a by the combination of weaving knife 22a and weaving spiral 38a.
• the longitudinal elements 14a are bent into helixes 10a, 102a by the weaving knife arrangement 24a, which includes the weaving knife 22a, such that at least the midpoints 26a of the first legs 16a formed during the bending process and/or at least the midpoints 28a of the second legs 18a formed during the bending process of a finished helix 10a, 102a each lie at least substantially in one plane.
• process step 158a the longitudinal elements 14a are bent into helixes 10a, 102a such that when several finished helixes 10a, 102a are twisted together, the wire mesh 12a is formed, which, viewed from the front and perpendicular to the main plane of extension of the helixes 10a, 102a, forms the square mesh shape 32a.
• the coils 10a, 102a are bent by the braiding knife assembly 24a such that springback of the high-strength steel wire 30a of the coils 10a, 102a is compensated, particularly in a direction transverse to the longitudinal direction 34a of the coils 10a, 102a.
• the coils 10a, 102a are also bent by the braiding knife assembly 24a in a direction transverse to the longitudinal direction 34a of the coils 10a, 102a. Additionally, in process step 158a, the coils 10a, 102a can be bent by the braiding knife assembly 24a in a direction parallel to the longitudinal direction 34a of the coils 10a.
• the springback of the longitudinal element 14a occurring during a bending operation is partially compensated by the braiding knife 22a.
• the longitudinal element 14a, in particular the helix 10a, 102a is bent over by the braiding knife 22a.
• the springback of the longitudinal element 14a occurring during a bending operation is partially compensated by the braiding spiral 38a.
• the longitudinal element 14a, in particular the helix 10a, 102a is bent over by the braiding spiral 38a.
• the springback occurring during a bending process is partially compensated by the straightening unit 40a downstream of the braiding knife 22a.
• the longitudinal element 14a in particular the helix 10a, 102a, is bent over by the straightening unit 40a downstream of the braiding knife 22a.
• the helixes 10a, 102a are stretched parallel to the longitudinal direction 34a of the helixes 10a in addition to the bending process caused by the braiding knife 22a, compressed parallel to the longitudinal direction 34a of the helixes 10a, 102a in addition to the bending process caused by the braiding knife 22a and/or rotated transversely to the longitudinal direction 34a of the helixes 10a, 102a in addition to the bending process caused by the braiding knife 22a.
• step 166a which may in particular also form a sub-process step of process step 158a, during the bending process the respective longitudinal element 14a resting on the braiding knife 22a, in particular the respective helix 10a, 102a resting on the braiding knife 22a, is brought into contact with the braiding knife 22a at least in the transition area 42a and/or at least in the further transition area 44a. pressed.
• the longitudinal elements 14a, in particular the helixes 10a, 102a are bent over by an overbending angle 36a of at least 20°.
• FIG. 12b shows an example of a helix 10a made of a high-strength wire 30a, which has not been straightened, in particular not flattened, as seen from a view parallel to the longitudinal direction 34a of the helix 10b.
• the individual legs 16a, 18a of the helix, their centers 26a, 28a, and the bending points 20a of the helix do not lie in one plane, but are each offset by an angle 182a.
• the claimed method and the claimed manufacturing device 46a are designed to keep the angle 182a as small as possible and preferably to eliminate the angle 182a altogether.
• FIG. 13 Figure 1 shows a schematic view of an alternative wire mesh 12b in a viewing direction parallel to a principal extension plane of the wire mesh 12b and parallel to a longitudinal direction 34b of a helix 10b, 102b of the wire mesh 12b.
• the wire mesh 12b comprises at least the helix 10b and at least the further helix 102b.
• the helixes 10b, 102b comprise first legs 16b, second legs 18b, and bends 20b connecting the legs 16b, 18b.
• the legs 16b, 18b of the helixes 10b, 102b have bulbous bulges 94b, 118b.
• the bulbous bulges 94b, Legs 16b and 18b of helix 10b have a radius of curvature of 96b and 120b, respectively. Legs 16b and 18b of the further helix 102b have a further radius of curvature of 168b.
• the radii of curvature 96b and 120b of the bulbous curves 94b and 118b of helix 10b of the wire mesh 12b differ significantly from the radii of curvature 168b of the bulbous curves 94b and 118b of the further helix 102b of the wire mesh 12b.
• the radii of curvature 96b, 120b of the convex curves 94b, 118b of the helix 10b of the wire mesh 12b are significantly smaller than the radii of curvature 168b of the convex curves 94b, 118b of the further helix 102b of the wire mesh 12b.
• the radii of curvature 96b, 120b of the convex curves 94b, 118b of the helix 10b of the wire mesh 12b are more than 30% smaller than the radii of curvature 168b of the convex curves 94b, 118b of the further helix 102b of the wire mesh 12b.
• FIG. 14 Figure 1 shows an alternative manufacturing device 46c with an alternative braiding knife arrangement 24c comprising an alternative braiding knife 22c.
• the braiding knife 22c has a section 138c along which the braiding knife 22c is helically twisted along a longitudinal axis 48c of the braiding knife 22c.
• the braiding knife 22c is twisted multiple times in the section 138c.
• the twist of the braiding knife 22c in the section 138c is greater than 360°.
• FIG. 15 Figure 46d shows a further alternative manufacturing device with a further alternative braiding knife arrangement 24d comprising a further alternative braiding knife 22d.
• the braiding knife arrangement 24d is designed for bending a helix 10d, 102d from a longitudinal element 14d.
• the braiding knife 22d has a section 138d along which the braiding knife 22d is helically twisted along a longitudinal axis 48d.
• the braiding knife 22d has an outlet 170d.
• the finished bent longitudinal element 14d exits the braiding knife 22d at the outlet 170d.
• the helical twist of the braiding knife 22d has a pitch 52d, 52'd.
• the slope 52d, 52'd of the helical twist of the braiding knife 22d takes on a slope along the longitudinal axis 48d of the braiding knife 22d in the direction of the Output 170d.
• the slope 52d, 52'd of the twist of the weaving knife 22d along the longitudinal axis 48d decreases in the direction of the output 170d of the weaving knife 22d.
• FIG. 16 Figure 1 shows a second further alternative manufacturing device 46e with a second further alternative braiding knife arrangement 24e comprising a second further alternative braiding knife 22e.
• the braiding knife 22e has a cross-section 54e, the shape of which has a convex curvature 60e at least on a first side surface 56e of the cross-section 54e.
• the shape of the cross-section 54e of the braiding knife 22e has a convex curvature 60e on a second side surface 58e of the cross-section 54e opposite the first side surface 56e of the cross-section 54e.
• FIG. 17 Figure 1 shows a third alternative manufacturing device 46f with a third alternative braiding knife arrangement 24f comprising an alternative braiding spiral 38f.
• the braiding knife arrangement 24f is designed for bending a helix 10f, 102f from a longitudinal element 14f.
• the braiding spiral 38f has an outlet 72f.
• the fully bent longitudinal element 14f exits the braiding spiral 38f at the outlet 72f.
• the braiding spiral 38f has a spiral channel 64f.
• the spiral channel 64f has a variable channel pitch angle 66f. The size of the channel pitch angle 66f of the spiral channel 64f decreases towards an outlet 72f of the braiding spiral 38f.
• FIG. 18 shows part of a fourth alternative manufacturing device 46g with an alternative straightening unit 40g.
• Figure 1 shows a schematic sectional view of a section through a braiding knife 22g of a braiding knife arrangement 24g of the manufacturing device 46 and through an alternative pressing device 74g of the alternative straightening unit 40g.
• the straightening unit 40g includes the pressing device 74g.
• the pressing device 74g has pressing elements 76g and 154g.
• the outer shape of the pressing elements 76g and 154g is adapted to an outer shape of the braiding knife 22g.
• the outer shape of the braiding knife 22g has a
• the pressing elements 76g and 154g are adapted to the concave curvature 62g.
• the pressing elements 76g and 154g have a convex curvature 172g.
• the convex curvature 172g of the pressing elements 76g and 154g is designed to engage with the concave curvature 62g of the braiding knife 22g during a straightening process, particularly an overbending process, and thereby overbending and/or straightening, in particular flattening, a longitudinal element 14g bent into a helical shape by the braiding knife arrangement 24g.
• the pressing elements 76g and 154g are adapted to a convex curvature 60g of a braiding knife 22g.
• the outer shape of the pressing elements 76g, 154g is adapted to a helical shape of a twisting of at least a partially twisted braiding knife 22g.
• the outer shape of the pressing elements 76g, 154g is complementary to at least one section of the braiding knife 22g.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Mechanical Engineering (AREA)
• Textile Engineering (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Manufacturing & Machinery (AREA)
• Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
• Wire Processing (AREA)

Applications Claiming Priority (2)

Publications (3)

Family

ID=69149250

Family Applications (1)

Country Status (18)

Families Citing this family (3)

Citations (1)

Family Cites Families (26)

• 2019
  • 2019-02-01 DE DE102019102593.1A patent/DE102019102593A1/de not_active Withdrawn
  • 2019-11-15 DE DE202019106401.3U patent/DE202019106401U1/de active Active
• 2020
  • 2020-01-20 TW TW109101861A patent/TWI725711B/zh active
  • 2020-01-21 AT ATGM11/2020U patent/AT16763U3/de unknown
  • 2020-01-31 PH PH1/2021/551845A patent/PH12021551845A1/en unknown
  • 2020-01-31 MX MX2021008814A patent/MX2021008814A/es unknown
  • 2020-01-31 JP JP2021544437A patent/JP7186305B2/ja active Active
  • 2020-01-31 WO PCT/EP2020/052406 patent/WO2020157267A1/de not_active Ceased
  • 2020-01-31 CA CA3128088A patent/CA3128088A1/en active Pending
  • 2020-01-31 EP EP20703020.6A patent/EP3917697B1/de active Active
  • 2020-01-31 CN CN202080011793.0A patent/CN113710389B/zh active Active
  • 2020-01-31 US US17/425,911 patent/US11904380B2/en active Active
  • 2020-01-31 PL PL20703020.6T patent/PL3917697T3/pl unknown
  • 2020-01-31 AU AU2020213696A patent/AU2020213696B2/en active Active
  • 2020-01-31 ES ES20703020T patent/ES3061459T3/es active Active
  • 2020-01-31 PE PE2021001224A patent/PE20211518A1/es unknown
  • 2020-01-31 AR ARP200100268A patent/AR117972A1/es active IP Right Grant
  • 2020-02-03 CN CN202020150346.0U patent/CN212144362U/zh active Active
• 2021
  • 2021-07-14 ZA ZA2021/04959A patent/ZA202104959B/en unknown
  • 2021-07-29 CL CL2021001995A patent/CL2021001995A1/es unknown

Patent Citations (1)

Also Published As

Similar Documents

Legal Events