WO2017007411A1 - Profil extrudé produit avec des matrices de façonnage rotatives - Google Patents
Profil extrudé produit avec des matrices de façonnage rotatives Download PDFInfo
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- WO2017007411A1 WO2017007411A1 PCT/SE2016/050684 SE2016050684W WO2017007411A1 WO 2017007411 A1 WO2017007411 A1 WO 2017007411A1 SE 2016050684 W SE2016050684 W SE 2016050684W WO 2017007411 A1 WO2017007411 A1 WO 2017007411A1
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- profile
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- thickness
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/14—Making other products
- B21C23/142—Making profiles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels for metal extruding
- B21C35/02—Removing or drawing-off work
- B21C35/023—Work treatment directly following extrusion, e.g. further deformation or surface treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/35—Extrusion nozzles or dies with rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/256—Exchangeable extruder parts
- B29C48/2568—Inserts
- B29C48/25686—Inserts for dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/3001—Extrusion nozzles or dies characterised by the material or their manufacturing process
- B29C48/3003—Materials, coating or lining therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
- B29C48/31—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets being adjustable, i.e. having adjustable exit sections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
- B29C48/315—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets with parts oscillating relative to each other
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/325—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/33—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles with parts rotatable relative to each other
Definitions
- the present invention relates to a new principle to design profiles, profile segments, beams, elements for absorption of kinetic energy and surfaces / panels by varying the wall thickness along (_t) + across
- the invention can be done in various forms in a number of different ways for different applications, with various requirements and is applicable to extrusion and
- plastically deformable materials and material combinations for example metal, metal composite, plastic, plastic composite, wood based composites, clay, rubber or reinforced rubber formed to profile by a process comprising a tool with one or more fixed parts partially predefining the profile's appearance / cross section before the profiles final shape is defined to a fixed or varied cross section when the material passes rotating body can be patterned or smooth and whose position in some embodiments of the invention may vary relative to other bearing surfaces or rotating bearing surfaces in the tool with which they define profiles final shape, whether rotating dies used are patterned or not .
- An object of the example embodiments of the disclosure is to provide an improved extruded profile. This object is partly achieved by the features of the independent claims .
- an extruded profile having a longitudinal direction X and a transverse direction Y, and manufactured by dynamic extrusion / pultrusion of plastically / thermally
- the profile cross-sectional shape comprises at least two different thickness values in the longitudinal cross-section.
- the profile cross-sectional shape comprises at least two different thickness values in the longitudinal cross-section.
- the difference between a maximum thickness value and a minimum thickness value for at least one cross sectional shape is in the range between 2% - 80%.
- the difference between a maximum thickness value and a minimum thickness value for at least one cross section is in the range between 4% - 50%.
- the difference between a maximum thickness value and a minimum thickness value for at least one cross section is in the range between 5% - 20%.
- the thickness, as seen in the vertical direction Z is varied for a given width along the transverse direction Y for any transverse cross-section.
- the thickness, as seen in the vertical direction Z, is varied for a given length along the longitudinal direction X for any longitudinal cross-section .
- the shape of the transverse cross section is varied for a given length along the longitudinal direction X.
- a variation of the thickness for a given width is any one of a linear variation, non-linear variation, and step-wise variation. Other variations are also conceivable depending on the use and installation of the profile.
- the profile cross- sectional shape defines a pattern extending in a
- the pattern comprises at least one indentation and at least one projecting region.
- the pattern is part of a repetitive pattern extending in the directions of the profile.
- the at least one reinforced region is at least partly or entirely a diagonal-extending region, a polygon-shaped region such as a circular-shaped region, an elliptic-shaped region, a triangular-shaped region or the like, as seen in the longitudinal direction and in the transverse direction.
- the profile is a predefined value
- the difference between said at least two different thickness values is provided by a variation of the profile thickness in the profile longitudinal
- an extruded profile according to the example embodiments as mentioned herein is particularly useful as a vehicle structure profile.
- the profile can be used as an impact beam, impact absorbing beam or the like, such as a bumper impact beam.
- the extruded profile can be used and installed in several different types of structures and systems.
- pattern may refer to any type of region defined (or obtained) by the dynamic extrusion / pultrusion method as mentioned above, which typically at least partly or entirely defines a profile cross- sectional shape that comprises two different thickness values in a longitudinal cross-section and/or in a transverse cross-section.
- the pattern may sometimes also be referred to as a reinforced region, a reinforced pattern, stiffening pattern, stiffeners, pattern segment or segment, or simply as a pattern.
- the pattern comprises at least one indentation and at least one projecting area.
- Extruded / pultruded materials often have a 15 better material property (higher strength) in the utmost millimeters of the surface and consequently it always results in maximum material performance in the surface.
- the methodology is also useful for optimizing the lamp ⁇ posts, sign holders and other elements in the traffic environments, as well as all profiles and beams that are included in some form of load cases.
- the method makes it possible to extract the materials and weight saving potential that profile production with rotating dies give after the last development stages and innovations :
- patent SE504300 (C2) and the patent SE514815 (C2) may be said to describe the procedure for extrusion with rotating dies acc. Pierre Hamel instructions, while patent applications 0702030-8 and 0702659-4 describes new methods and approaches enabling and in some cases is a prerequisite for producing the profiles described in this patent. Production with rotating dies members are
- the purpose of the invention is to by optimized design, rationally reduce weight, raw material consumption, energy consumption and emissions in the stage of manufacturing and use the profiles, beams, beam segments and areas having property improving designs and / or thickness variations that utilize the capabilities of rotating dies in a way that conventionally designed profiles, beams and surfaces can not make. This makes it possible to:
- the invention relates to a new way to design, lighter, stronger, stiffer material efficient profiles (6,26,) Surfaces (22), beam segments (4), and energy absorbing members (6) and structures (23), with the desired
- Different embodiments and applications of the invention makes it possible to improve the weight / strength ratio up to and in some cases over 50% in actual components with equal or better performance and with optimized characteristics (for example, deformation behaviour, natural frequency, etc.), enabling it to make better and more fuel-efficient cars, vehicles, airplanes, boats, with maintained safety and stronger structures that are lighter and less expensive.
- optimized profile it is meant a profile manufactured with dynamic extrusion or pultrusion manufactured with reinforcing patterns (18, 19, 20, 21) and / or goods variation (_t, _A) that gives the optimized profile a higher strength / weight ratio than a corresponding profile with the same amount of material and cross layout without reinforcing patterns and goods variation has.
- the patterns of the optimized profile can be customized to achieve maximum strength, stiffness, ability to absorb kinetic energy, be resistant to buckling, compression, have different properties in different directions etc.
- extrusion or pultrusion with reinforcing pattern and / or goods variation which gives the optimized profile a strength / weight ratio and buckling resistance that is higher than a corresponding surface with the same amount of material and cross section layout without reinforcing patterns and goods variation has.
- the optimized surface patterns can be customized to get maximum strength, stiffness, ability to absorb kinetic energy, buckling resistance, compression resistant, have different
- the optimized surface can also be bent or profile into a profile which can have patterns on either in or outside or both inside and outside (if the optimized surface as the starting substance has pattern/ribs on both sides) .
- the optimized surface as the starting substance has pattern/ribs on both sides.
- Dies see Figure 203 item 206) with core member (211) is expensive and more difficult to manufacture than dies without core portion (see Fig. 11, 12, 13) at the same time as they are sensitive to fatigue.
- Pultrusion In contrast to the extrusion means the profile drawing. Pultrusion generally means that a continuous fibre bundle impregnated with liquid resin drawn through a heated die, but pultrusion is also used for shaping metal tubes and profiles. Resin impregnation occurs in a resin bath. The most common material is glass-reinforced unsaturated polyester. Other core epoxy resins and PolyUrethane are used depending on the application. Often used fibrous material in the form of woven or felt fabric, resulting fibre beam to achieve strength in the transverse
- Pre-preg fibres Fibers that are pre- impregnated with resin
- Pre-preg fibres Fibers that are pre- impregnated with resin
- Dynamic extrusion Procedure in which a material under pressure, is pressed through a tool/die with rotating forming members/dies that can give the profile a varied cross-section and/or appearance in the form of e.g. patterns on one or more surfaces and dimensional changes in cross-sectional area and or goods thicknesses.
- the rotating shaping die members can be with pattern/variation as well as smooth or a combination of both .
- the rotating shaping die members can be raised and lowered independently of other cycles in the process.
- one/several profile (s) drawn through a die/tool with rotating forming members/dies that can give the profile (s) a varied cross-section and/or appearance in the form of e.g. patterns on one or more surfaces and dimensional changes in cross-sectional area and or goods thicknesses.
- the rotating shaping die members can be with pattern/variation as well as smooth or a combination of both .
- the rotating shaping die members can be raised and lowered independently of other cycles in the process.
- Die Generally, the name used by professionals for rofile production tools.
- Rotating die Rotating profile-shaping member / organ of the tool for dynamic extrusion/pultrusion
- Pressure drop Reduction of pressure by the tool is a result of area- reduction, plastic exemplary work and friction. At metal extrusion converted large amounts of energy to heat, as a result of pressure.
- Imbalance means that the outgoing material will or want to come out with higher or lower speed at certain parts of the profile cross-section.
- a profile extruded in a tool with the imbalance may be less resistant (due to internal tensions), tend to dent or bend and at the extrusion with rotating dies result is often the process breakdown .
- a bearing surface the extruded material is forced to pass at a relative speed of outgoing profile speed, because it is static, so that means there is a speed difference between the static bearing surface and the extruded material, resulting in a lot of friction and heat.
- a rotating bearing surface is a surface of the rotating die/member that defines the profile cross-section, making patterns possible as well as wall-thickness variation.
- a rotating bearing surface in general generates much less resistance/ friction against the flowing material than a static bearing surface, which previously has created major problems with the imbalance between the different parts of the profile cross-section, which is defined by the rotating bearing surfaces and the parts that are defined by static bearing surfaces. This has often resulted in the process breakdown at start up.
- profile manufacturing with use of present inventions device and method the problems with this, is radically reduced, through the gripping, steering and pulling of the profile in the right direction already in the tool. If you lift the rotating bearing surfaces at start up and let the gripping, steering puller go into the tool, elimination of deviating profile that can cause process failure is achieved.
- the pre-bearing brings down the material cross section so much so that the subsequent rotating die wont have to take up unnecessarily large forces from the extruded material.
- Pre-bearing has in combination with preceding shape in the die upstream a central role for control and/or redulation of material flows through the die.
- the gripping, steering puller go all the way into the tool and grip and pull the material before it leaves the die (see Fig. 202 A) . Gripping steering puller enables efficient,
- Griping puller can eliminate or minimize process
- the present invention enables a variation of the thickness and tread depth, in reality, by taking into account factors such as variation of the pressure drop and the outlet rate, both of which vary when varying the outlet area / cross section of the profile:
- a reduced outlet area increased pressure drop and at constant speed on the feeding of material into the extrusion / pultrusiondie the result is a higher outlet speed and potentially big problems with increased
- a high extrusion ratio reduces the maximum discharge rate of extruded / pultruded profile due to, among other things heat build up and flaking. Flaking is a phenomenon that occurs when you try to extrude / pultrude in high speed and outgoing profile has problem with holding together, due to the forces of friction between the outgoing profile and bearing
- Figs. 1, 1A and IB schematically show an example embodiment of an extruded profile according to the disclosure in the form of a bumper beam;
- Fig. 2A shows an example embodiment of the extruded profile in Fig. 1 and Fig 1A-1B;
- Fig. 2B shows cross section of the example embodiment of the extruded profile in Fig. 1 and Fig 1A- IB;
- Fig. 3A schematically shows another example embodiment of the extruded profile
- Fig. 3B shows a cross section along A-A and B-B in Fig 3A;
- Figs. 4A, 4B and 5 schematically show various modes of an example embodiment of an extruded profile according to the disclosure in the form of a bumper beam;
- Figs. 6 and 7 schematically show various example embodiments of an extruded profile according to the disclosure
- Fig. 8 schematically shows an example embodiment of a pattern of an extruded profile according to the disclosure
- Fig. 9 schematically shows an example embodiment of an extruded profile according to the disclosure in the form of a framework
- Figs. 10, 10 A-A, 10 B-B schematically show various example embodiments of an extruded profile according to the disclosure
- Figs. 11-15 schematically show various example embodiments of an apparatus and method for manufacturing an extruded profile according to the disclosure
- Figs. 201, 202A-202B, 203, 204A-204C schematically show further details of various example embodiments of an apparatus and method for manufacturing an extruded profile according to the disclosure
- Figs. 301-304a schematically show further details of various example embodiments of an apparatus and method for manufacturing an extruded profile according to the disclosure.
- FIG. 1 shows the optimized profile segments of a bumper beam (6) with optimized patterned segments (4) according to the present invention, where the optimized segment (4) get gained increased compression / buckling and dent resistance from transverse (2) and longitudinal (3) reinforcements with height (_t) according to a pattern that provides enhanced thickness (T) in relation to the thin goods (1) and where the optimized segment (4) transforms into the corner segments (5) are angled (10, 11) together with the along and transverse reinforcements to control the deformation at a compression where corner segments (5) are forced together and in order to obtain the maximum energy absorption, with steady force at the crash without beam segment 5 suddenly collapses and give in.
- the segment of Fig. 1 gives a light, strong bumper beam that provides uniform deceleration with high energy absorption capacity without sudden collapse.
- extruded profile 6 As illustrated in the figures herein, for example figs. 1, la and lb, there is provided one example embodiment of an extruded profile 6.
- the extruded profile is here described in relation to a bumper beam.
- other types of profile and beams are readily conceivable such as vehicle structure profiles.
- the extruded profile has a longitudinal direction X, a transverse direction Y and a vertical direction Z.
- the extruded profile is manufactured by dynamic extrusion / pultrusion of plastically / thermally deformable material with one or more static array elements with static bearing surfaces which in cooperation with one or more rotating dies whose rotating bearing surfaces completely or partly defines a profile cross-section, in particular a cross-sectional shape.
- Fig. la shows part of a transvers cross section of the profile shape.
- the profile cross-sectional shape comprises two different thickness values in the transverse cross-section.
- Fig. lb shows part of a longitudinal cross section of the profile shape.
- the profile cross-sectional shape comprises two different thickness values in a longitudinal cross-section.
- the figures illustrate an extruded profile having a profile cross-sectional shape that comprises two
- the extruded profile may only have a profile cross- sectional shape that comprises two different thickness values in the longitudinal cross-section.
- the extruded profile may only have a profile cross- sectional shape that comprises two different thickness values in the transverse cross-section.
- the cross-sectional shape may of course include any other number of different thickness values.
- the profile cross-sectional shape comprises at least two different thickness values in the longitudinal cross- section and/or at least two different thickness values in the transverse cross-section. That the extruded profile has a profile cross-sectional shape that comprises at least two different thickness values in the longitudinal cross-section and at least two different thickness values in the transverse cross-section can be readily
- the transverse cross-section extends in the transverse direction Y and in the vertical direction Z. Furthermore, the transverse cross-section comprises at least two different thickness values Tl and T2, as seen in the vertical direction Z.
- Fig. la shows a part of a transverse cross-section of the profile in fig. 1. In this figure, the extruded profile has been
- the longitudinal cross-section extends in the longitudinal direction X and in the vertical direction Z. Furthermore, the longitudinal cross-section comprises at least two different thickness values T3 and T4, as seen in the vertical direction Z.
- Fig. lb shows a part of a longitudinal cross-section of the profile in fig. 1.
- the extruded profile has been manufactured to form a profile with a longitudinal cross section having at least a first thickness value T3 and a second thickness value T4.
- the first thickness value T3 may correspond to a maximum thickness value
- the second thickness value T4 may correspond to a minimum thickness value.
- the difference between a maximum thickness value Tmax and a minimum thickness value Tmin in a cross-sectional shape is in the range between 2% - 80%.
- the difference between a maximum thickness value and a minimum thickness value for at least one cross section is in the range between 4% - 50%.
- the difference between a maximum thickness value and a minimum thickness value for at least one cross section is in the range between 5% - 20%.
- the thickness is varied for a given width Ly.
- the variation of the thickness is varied in step-wise fashion.
- the thickness can be varied in several different ways. That is, a variation of the thickness for a given width can be any one of a linear variation, non-linear variation, and/or step-wise variation. Other variations are also conceivable
- the thickness as seen in the vertical direction Z, is varied for a given length Lx .
- a variation of the thickness for a given length can be any one of a linear variation, non-linear variation, and/or step-wise variation. Other variations are also conceivable depending on the use and installation of the profile, which are further illustrated by the figures hereinafter .
- the thickness as seen in the vertical direction Z, is varied for a given width Ly along the transverse direction Y for any transverse cross section.
- the shape of the transverse cross section is varied for a given length along the longitudinal direction X.
- the profile cross-sectional shape defines a pattern 2, 3, 400 extending in a direction different than the longitudinal direction and the transverse direction.
- Further examples of patterns or so called reinforced regions extending in a direction different than the longitudinal direction and the transverse direction are illustrated in e.g. figures 2A, 2B, 3A, 3B, and figs. 6-9.
- the pattern comprises at least one indentation and at least one projecting region.
- the pattern is part of a repetitive pattern extending in the directions X, Y and Z of the profile, see e.g. figures 1, 1A, 2A, 2B, 3A, 3B, and figs. 6-9.
- the pattern as illustrated herein typically provides for an improved strength compared to non-patterned profile.
- the pattern is at least partly or entirely a diagonal-extending region (see fig. 1, 1A and IB) , a polygon-shaped region such as a circular-shaped region (fig. 7), an elliptic-shaped region, a triangular- shaped region (fig 8) or the like, as seen in the
- the difference between the at least two different thickness values Tl and T2 is provided by a variation of the profile thickness in the profile longitudinal direction X.
- variation in thickness can also be varied in both the transverse direction Y and the longitudinal direction X.
- FIG. 2A shows an example of an optimized bumper beam seen from the top with front (14), back (13) and optimized top (4) visible.
- Fig. 2B section A - A is a cross-section of the bumper beam ( Figure 2A) , which showing how the optimized beam segments (4) are bent inward center at a collision when the front (14) of the beam is pressed against the back (13) which results in the optimized segments are pressed together completely (bent toward the beam middle in direction of the arrows, so the optimized segments is double- folded between the rear segment (13) and the compression preventing segment (15) whose depth (16) together with the double-folded optimized segments
- T patterned thickness
- Fig. 3A shows a side bumper beam with optimized
- Fig. 3B shows the section A-A: B-B, the pattern provides a cyclical goods variation with low consumption of material giving a high resistance against bending, buckling, compression and dent.
- Fig. 4A shows the unstressed bumper beam (6)
- FIG. 4B shows the bumper beam exposed to the load (4F) a 2cm wide area across the beam front and is attached to the ends at the fixing points (F, F, F, F) to the so- called crash boxes.
- Fig. 5 shows the same collision simulation in Fig.4b and one can see how the optimized beam segments (4) absorps energy by bending inwards (17) with an even radius, without collapsing, which provides an optimum combination of strength, energy absorption, controlled deceleration without peaks and dips while the beam weighs 35% less than a beam without optimized segments with similar construction .
- Fig. 6 shows an example of beam segments optimized for low weight combined with resistance against compression / dent, and stiffness of the beam segment without greater priority to mechanical energy absorption at deformation. It shows how the point load (Fk) distributed and
- Figure 7 shows an example of another embodiment of the a flat, patterned, beam segments, with goods variations in form of circular (21) reinforcements, transverse reinforcements (18) and a longitudinal reinforcement (20) .
- transverse reinforcements (18) combined with the longitudinal reinforcement (20) also gives a different characteristic of the load coming on narrow space or the point at k2 than the characteristic behaviour at the point load at point FK1 become: the transverse reinforcements (18) form together with
- the longitudinal reinforcement (20) and the corner segment (5) a very compression-resistant region that allows beam segment being "harder” against point loads at k2 than at FK1, thus varying patterns and combinations of reinforcements offers new, unique capabilities to a rational way to of producing lightweight beams, segments and products with tailored properties for different applications and uses.
- Fig. 8 shows an example of how to design a pattern, to obtain a surface (22) that is light, stiff and resistant to buckling when loads to the surface normal.
- the surface could be used to make the floors of an aircraft
- Fig. 9 shows an example of a beam segment that is
- Welding is an appropriate method, since it provides joint without tensions or weakening defects in material
- micro-structure including materials with extremely small crystalline in the size of 1 ⁇ able to maintain their properties relatively intact at FSW.
- material (24) which is not maximum effective for segment strength, you can at an extra cost achieve further improved strength / weight ratio of beams and segments that don't need to be covered.
- processing may conveniently be done by water jet, which is relatively inexpensive, efficient and do not produce changes in the structure of materials from heat
- a pulsation in a metal extrusion line could mean that every billet Fig. 201 (204) does not means a load cycle for the extrusion line, but several hundred load cycles, which would soon lead to fatigue. Moreover, it would be very difficult to get good a quality profile.
- the end product is a very optimized beam segment or profile , so that the end result is a profile with fast, cyclical, diversified, cross-sectional area variations to making the areas of compensation of the areas to be machined away (24), so that the extrusion / pultrusion has a process in terms of simple profile to do with the relatively even cross sectional area along the profile, which works well in process and allows for greater variety in material thickness (_t) .
- Fig. 10 shows an example of a profile extruded in one step with 2 optimized beam segment of the type shown before in FIG. 9, with the side segments 27.
- This profile can either be made in one step by pultrusion or extrusion with two rotating shaping dies (see Fig. 203) or by joining 2pcs optimized beam segments (23) with 2 "Normal" segments (27) .
- Fig. 11 is shown how one can vary the thickness on an optimized profile (28), by varying the rotating die position, relatively static bearings.
- Fig. 12 is shown how a profile (29) with the pattern both sides are given varying thickness, which varied and cessation patterns, by raising and lowering the rotating dies (110) .
- Fig. 13 shows how to make a "Zic-Zac” profile (30), by controlling the material in sometimes one and sometimes other direction with the rotating dies.
- Fig. 14 has a profile segments acc. Fig. 13 been used as waist during extrusion of an I-beam (32) which can thus be given unique characteristics, it is easy to see how the rotating dies (33, 34) is essentially giving a profile with constant cross-sectional area where the area average Al, A2, and A3 is in principle the same, even though the profile has a "pleated" waist.
- This allows the the extrusion process to be smooth, with a constant area of cross section results in a constant material flow through the tool which gives low pulsationsr in terms of speed, power and pressure in both billet, tools, bearings and extrusion line.
- Fig. 15 is shown how to vary the cross-sectional and pattern along an imaginary product (35), to be different properties at different locations.
- Fig. 201 Displays overview with complete extrusion line provided with gripping & steering puller device (230) complete with stretching device (231), where the rotating dies (10) are in their external positions so that the gripping & steering puller (230) can go right into the die (6) and where the gripping & steering puller (230) is ready to take Receive / embrace, grip, pull and steer outgoing material from die and steer / pull it up to the ordinary gripper (213) and puller (214) .
- Fig. 202A + 202B shows how the device and method interact to provide a stable start-up:
- Fig. 202A shows the puller device is ready for process starting with gripping & steering puller (230A) inside the die between the rotating dies (210A) , ready to grip, steer and pull outgoing material before it may deviates and cause process breakdown.
- FIG. 202B shows how the gripping & steering puller (230B) has gripped the profile and pulls it in the desired direction, while rotating dies (10B) has gone into production mode and started designing outgoing material, before it can deviate and cause process breakdown.
- Fig. 204A shows how the gripping & steering puller (230A) has entered in the extrusion press past the front plate and the support plate all the way into the extrusion die (206) ready to grip, steer and pull outgoing materials in the right direction long before extrusion plant's
- FIG. 204B shows how the gripping & steering puller (30B) has grabbed and takes the output material and goes through ordinary gripping device (213b) so that ordinary puller (14a) is able to take over when outgoing material reached regular grippers/puller .
- FIG. 204C shows how the gripping puller has pulled out outgoing materials to the ordinary gripping device 213C which thereby able to grip the profile which can thus stretched-controlled by ordinary puller (214c) start pulling in the outbound profile - without manual
- Gripper-puller (230C) has released profile and moved in sideways before the next startup or before billet
- Fig. 301 shows optimized profile (322) with pattern on inside, made by rotating dies (310), sitting in the core portion of the tool.
- movable bearing (318) enabling further opportunities to optimize the thickness and pattern.
- Fig. 302 shows how to produce optimized profiles with varied patterns by varying the position of rotary dies (4a, 4b) relative to the adjustable bearing (18b) .
- Fig. 303 shows how to vary the thickness and pattern (322a, 322b, 322c) at extrusion of hollow section (322) by varying the position of rotary dies (4a, 4b, 4c) and adjustable bearings (18a, 18b) . This can of course, also be carried out during extrusion of non-hollow sections.
- Fig. 304 shows a third embodiment of the invention where varying the thickness of the outgoing profiles, by varying the bearings (313) position.
- Fig. 304a and 304b shows the relationship between the bearings length (314a, 314b) and profile thickness (315a, 315b) kept reasonably constant at varied thickness, by allowing static bearing surface in fixed tool part cooperating with the bearings variable bearing length - which is important to get the balance flow and stable process.
- delta A variation in the average profile cross section area here called delta A (_A) corresponding by raising or lowering the rotating die units.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Of Metal (AREA)
Abstract
L'invention concerne une nouvelle façon de concevoir des profils pultrudés et extrudés, efficaces, à matériau solide et léger, des segments (4) et des surfaces de profil produits lors de la production de profil avec des matrices rotatives créant une meilleure résistance à la compression, à la flexion et au gondolement, une absorption d'énergie plus élevée et une bonne résistance au bon endroit, par les étapes consistant à : faire varier l'épaisseur le long de (_t) + sur la direction d'extrusion, créer des motifs de renforcement (2, 3), faire varier l'épaisseur de profil (t,_t), et dans certains cas, faire varier les angles (10, 11) et le motif (2, 3) ce qui augmente la résistance de surface/segments de profil vis-à-vis de la compression, de la flexion et du gondolement par rapport à la quantité de matériau utilisé et résultant en ce qu'on peut créer des faisceaux et surfaces optimisés qui ont de meilleures propriétés en termes de résistance/poids, rapport rigidité/poids, unité de poids/absorption d'énergie mécanique, déformation et fréquence naturelle, capacité de transfert thermique, la rupture de l'écoulement laminaire, surface augmentée/optimisé pour réaction chimique et/ou électrochimique etc.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310403567.2A CN116572497A (zh) | 2015-07-04 | 2016-07-04 | 挤压的型材及用于生产挤压的型材的方法 |
| US15/742,022 US20180207698A1 (en) | 2015-07-04 | 2016-07-04 | Extruded Profile Produced with Rotating Shaping Dies |
| CN201680039373.7A CN107848181A (zh) | 2015-07-04 | 2016-07-04 | 利用旋转成形模具生产的挤压型材 |
| EP16821742.0A EP3317077A4 (fr) | 2015-07-04 | 2016-07-04 | Profil extrudé produit avec des matrices de façonnage rotatives |
| US17/180,278 US20210245218A1 (en) | 2015-07-04 | 2021-02-19 | Extruded profile produced with rotating shaping dies |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1530102A SE539862C2 (sv) | 2015-07-04 | 2015-07-04 | Anordning samt förfarande för extrusion med motstående roterande organ |
| SE1530102-1 | 2015-07-04 | ||
| SE1530103A SE1530103A1 (sv) | 2015-07-04 | 2015-07-06 | 3DExtrusion av optimerade profiler |
| SE1530103-9 | 2015-07-06 |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US15/742,022 A-371-Of-International US20180207698A1 (en) | 2015-07-04 | 2016-07-04 | Extruded Profile Produced with Rotating Shaping Dies |
| US17/180,278 Continuation US20210245218A1 (en) | 2015-07-04 | 2021-02-19 | Extruded profile produced with rotating shaping dies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2017007411A1 true WO2017007411A1 (fr) | 2017-01-12 |
Family
ID=57685949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/SE2016/050684 Ceased WO2017007411A1 (fr) | 2015-07-04 | 2016-07-04 | Profil extrudé produit avec des matrices de façonnage rotatives |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2017007411A1 (fr) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019212432A3 (fr) * | 2017-11-08 | 2019-12-05 | Borusan Teknoloji̇ Geli̇şti̇rme Ve Arge A.Ş. | Traverse de pare-chocs et son procédé de production |
| US11490689B2 (en) | 2018-09-07 | 2022-11-08 | Acushnet Company | Golf shoes having multi-surface traction outsoles |
| US11497272B2 (en) | 2018-09-07 | 2022-11-15 | Acushnet Company | Golf shoe outsole |
| EP3965969A4 (fr) * | 2019-05-06 | 2023-01-18 | Reliefed AB | Dispositif et procédé d'extrusion et/ou de pultrusion |
| WO2023144414A1 (fr) * | 2022-01-31 | 2023-08-03 | Reliefed Ab | Procédé de production et produit céramique obtenu par un tel procédé |
| USD1007116S1 (en) | 2021-09-23 | 2023-12-12 | Acushnet Company | Shoe |
| USD1027405S1 (en) | 2021-09-27 | 2024-05-21 | Acushnet Company | Shoe |
| US12075887B2 (en) | 2018-09-07 | 2024-09-03 | Acushnet Company | Golf shoes having multi-surface traction outsoles |
| CN118809996A (zh) * | 2024-09-19 | 2024-10-22 | 株洲鼎新科技有限公司 | 一种丁基密封胶带挤出专用设备 |
| US12208555B2 (en) | 2019-05-06 | 2025-01-28 | Reliefed Ab | Extrusion and/or pultrusion device and method |
| US12302990B2 (en) | 2018-09-07 | 2025-05-20 | Acushnet Company | Golf shoe having outsole with multi-surface traction zones |
| US12377595B2 (en) | 2019-05-06 | 2025-08-05 | Reliefed Ab | Extrusion and/or pultrusion device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4950151A (en) * | 1985-01-31 | 1990-08-21 | Zachariades Anagnostic E | Rolling die for producing high modulus products |
| SE504300C2 (sv) * | 1995-10-06 | 1996-12-23 | Mark Lars Jansson | Förfarande för kontinuerlig framställning av profiler och anordning för genomförande av förfarandet |
| JPH1158515A (ja) * | 1997-08-08 | 1999-03-02 | Tokai Kogyo Kk | シボ模様付押出成形品、及びその成形方法、並びに装置 |
| WO2001060582A1 (fr) * | 2000-02-18 | 2001-08-23 | Markram Development Ab | Dispositif et procede de pressage d'un flan capable de deformation elastique |
| WO2009069081A1 (fr) * | 2007-11-26 | 2009-06-04 | Arsizio Ab | Dispositif et procédé de production de profilés avec des matrices rotatives |
-
2016
- 2016-07-04 WO PCT/SE2016/050684 patent/WO2017007411A1/fr not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4950151A (en) * | 1985-01-31 | 1990-08-21 | Zachariades Anagnostic E | Rolling die for producing high modulus products |
| SE504300C2 (sv) * | 1995-10-06 | 1996-12-23 | Mark Lars Jansson | Förfarande för kontinuerlig framställning av profiler och anordning för genomförande av förfarandet |
| JPH1158515A (ja) * | 1997-08-08 | 1999-03-02 | Tokai Kogyo Kk | シボ模様付押出成形品、及びその成形方法、並びに装置 |
| WO2001060582A1 (fr) * | 2000-02-18 | 2001-08-23 | Markram Development Ab | Dispositif et procede de pressage d'un flan capable de deformation elastique |
| WO2009069081A1 (fr) * | 2007-11-26 | 2009-06-04 | Arsizio Ab | Dispositif et procédé de production de profilés avec des matrices rotatives |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP3317077A4 * |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11167708B2 (en) | 2017-11-08 | 2021-11-09 | Bo{hacek over (g)}aziçi Üniversitesi | Bumper beam and production method thereof |
| WO2019212432A3 (fr) * | 2017-11-08 | 2019-12-05 | Borusan Teknoloji̇ Geli̇şti̇rme Ve Arge A.Ş. | Traverse de pare-chocs et son procédé de production |
| US12075887B2 (en) | 2018-09-07 | 2024-09-03 | Acushnet Company | Golf shoes having multi-surface traction outsoles |
| US11490689B2 (en) | 2018-09-07 | 2022-11-08 | Acushnet Company | Golf shoes having multi-surface traction outsoles |
| US11497272B2 (en) | 2018-09-07 | 2022-11-15 | Acushnet Company | Golf shoe outsole |
| US12495863B2 (en) | 2018-09-07 | 2025-12-16 | Acushnet Company | Golf shoes having multi-surface traction outsoles |
| US12302990B2 (en) | 2018-09-07 | 2025-05-20 | Acushnet Company | Golf shoe having outsole with multi-surface traction zones |
| US11957204B2 (en) | 2018-09-07 | 2024-04-16 | Acushnet Company | Golf shoe outsole |
| US11974632B2 (en) | 2018-09-07 | 2024-05-07 | Acushnet Company | Golf shoes having multi-surface traction outsoles |
| EP3965969A4 (fr) * | 2019-05-06 | 2023-01-18 | Reliefed AB | Dispositif et procédé d'extrusion et/ou de pultrusion |
| US12208555B2 (en) | 2019-05-06 | 2025-01-28 | Reliefed Ab | Extrusion and/or pultrusion device and method |
| US12377595B2 (en) | 2019-05-06 | 2025-08-05 | Reliefed Ab | Extrusion and/or pultrusion device and method |
| US12384091B2 (en) | 2019-05-06 | 2025-08-12 | Reliefed Ab | Extrusion and/or pultrusion device and method |
| USD1007116S1 (en) | 2021-09-23 | 2023-12-12 | Acushnet Company | Shoe |
| USD1027405S1 (en) | 2021-09-27 | 2024-05-21 | Acushnet Company | Shoe |
| EP4472818A1 (fr) * | 2022-01-31 | 2024-12-11 | Reliefed AB | Procédé de production et produit céramique obtenu par un tel procédé |
| WO2023144414A1 (fr) * | 2022-01-31 | 2023-08-03 | Reliefed Ab | Procédé de production et produit céramique obtenu par un tel procédé |
| CN118809996A (zh) * | 2024-09-19 | 2024-10-22 | 株洲鼎新科技有限公司 | 一种丁基密封胶带挤出专用设备 |
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