FR2537699A1 - METHOD OF MAKING METAL PROFILES WITH THERMAL BRIDGE BREAKAGE, INSTALLATION FOR IMPLEMENTING THE SAME, AND PROFILES SO OBTAINED - Google Patents

Abstract

THE PRESENT INVENTION CONCERNS A PROCESS FOR MAKING METAL PROFILES WITH THERMAL BRIDGE BREAKAGE. THE PROCESS IN ACCORDANCE WITH THE PRESENT INVENTION CONSISTS OF CASTING A FIRST THERMAL INSULATING LINKAGE 40 BETWEEN TWO METAL ELEMENTS 20, 30, SO THAT THIS LINKING 40 IS ENGAGED AT EACH OF ITS ENDS IN A GROOVING 24 CONSTITUTED BY NERVES , 25; 34, 35, TO SLIDE THE ELEMENTS 20, 30 FREELY ON A FIXED CORE 70 OF APPROPRIATE SHAPE, THEN TO FLOW A SECOND THERMAL INSULATING LINKAGE ON CORE 70, SUCH AS IT ADHES TO THE WALLS OF THE METAL ELEMENTS 20, 30 AND NOT DOT AT CORE 70.

Description

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  The present invention relates to the field of metal profiles. More specifically, the present invention relates to a

  process for producing metal profiles of the type

  at least two separate metallic elements, connected

  between them by means of at least two separate connecting members

  thermally insulating, thermally insulating

  in associated grooves delimited respectively on each of the elements by ribs provided on the walls in

  the two elements of such profiles will be said to benefit

  metal strip with a thermal break, in the following

  The present invention also relates to

  an installation for carrying out this process,

  as well as the profiles thus obtained.

  Such metal profiles are intended to be used

  particularly in the field of construction,

  especially in the form of framing openings.

  The simplest solution technically to achieve

  metal profiles with thermal break

  is to fill the intermediate space defined between the two

  metal elements using a poorly conductive

  heat but with good characteristics

mechanical -

  However, in terms of the economy, it is desirable

  to use only the minimum amount of

  conductor of heat, required to ensure a rigid connection between the metal elements To do this, it

  should not fill the entire intermediate space

  delimited between the two metal elements Preferably, it is then desirable, to properly connect the elements

  metal, to provide several separate connecting members.

  In addition, the metal profiles thus formed, have better thermal break characteristics

  metal sections in which the intermediate space

  diaire is totally filled with bad conductor material

heat.

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  Various methods of realization have already been proposed

  such metal sections with thermal break.

  Thus, as described in the French utility certificate N 02318 380, it has already been proposed to introduce, by sliding, a plastic separator, in which

  the intermediate space delimited between two half-profiles.

  A synthetic foam is then poured into the upper part.

  of the gutter thus formed, by the separator and the internal walls of the half-profiles, after application of

  appropriate sealing means When it is desired to

  a double bond between the two half-metal profiles

  then it is necessary to return the assembly and

  repeat the above operations.

  French Patent No. 2 187 042 describes another method of manufacturing a composite profile using two initial half-metal profiles, and cores

  insulating material obtained by introduction of expanded foam.

  In order to fix the outer dimensions of the profile and to

  avoid the overflow, the profile is introduced into a sealed chamber The internal space of the profile can be divided using one or more partitions arranged at a certain mutual distance, so as to achieve several organs

  connecting, thermal insulators, separated.

  Other processes are described in German Patent Application No. 25 51 999, and German Pat. Nos. 1,174,483 and 1,245,567. However, these documents do not provide for the production of more than one link between

half-metal profiles.

  It has also been proposed, as described for example in French Patent Application No. 2,390,575, a method of first filling, with an insulating mass, the lower part of the section of a cavity.

  provided between two half-metal profiles; then in

  With an intermediate space above the cast mass, a separator is provided between the metal half-profiles, at a height above the initial filling level, which is fixed to said metal half-profiles to delimit a second gutter in combination with the internal surfaces of the half-metal profiles, and then we fill with mass

insulating the second gutter.

  The aforementioned document proposes to make said separator in the form of a flexible strip, which is fixed between the metal sections by means of fixing elements

  of course, it is then

  dispensable to ensure the correct positioning of this sepa-

  which must be inserted between the metal profiles

  in a curved position, so that the separator

  comes into engagement with the aforementioned fasteners.

  Such an arrangement proves complex and expensive, and therefore requires frequent maintenance.

  the price of the strip immobilized in the finished section,

  is a significant part of the cost price of it.

  The present invention now proposes a

  new process for manufacturing metal profiles with rup-

  thermal bridge, continuously, and directly at the output of a profiling die, -simple and inexpensive, and

  which gives finished and perfectly reliable profiles.

  The method for producing thermal break-section metal sections according to the present invention consists of moving along a fixed and part core and

  other of it, simultaneously on themselves, and parallel

  in parallel to each other, two profiled metal elements

  with an open channel upwards, and with

  at least one first and one second iso-bonding member.

  lants thermally, connecting the two metal elements,

  thanks to first and second

  thermally insulating duct respectively disposed upstream and above the fixed core to discharge said product, one

  at the bottom of said channel, and the other, above said fixed core.

  Such a method makes it possible to obtain metal profiles with a thermal break which consist of two distinct metallic elements connected to one another exclusively by a

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  plurality of thermally insulating connecting members.

  According to a feature of the present invention, the method further comprises the preliminary step of mechanically removing an upper wall connecting the two metal elements and initially closing said

  channel formed by the two elements.

  More precisely, according to a pre-existing embodiment

  ferential, the channel formed by the two elements is delimited

  by a metal bottom wall secured to both

  and by the side-walls and substantially vertical

  In such a case, said lower wall is eliminated.

  mechanically during a subsequent step after

  dification of the thermal insulation product poured on it,

which forms said first member.

  The process according to the present invention is

  preferably implemented at the exit of the sector of

  said metal elements and said

  tribution-of thermal insulation product, and the fixed core which is secured to external means independent of said metal elements, are maintained fixed relative

to said die.

  According to another characteristic of the present invention

  the process consists in repeating the previously defined steps at least once, so as to produce metal profiles consisting of at least two metallic elements.

  are interconnected by at least three linkage

  separated sound forming thermal break.

  The present invention also relates to a plant

  for the production of metal profiles with thermal break, which comprises means for guiding and driving the metal elements, a fixed core and two thermally insulating product distribution stations respectively disposed upstream of the fixed core relative to the direction. of moving elements, and above that core

fixed.

  According to the present invention, said thermally insulating product is initially in the semi-fluid state,

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  but solidifies later to present

high mechanical risks.

  According to an important feature of the present invention, the length of the fixed core is defined so that the thermal insulation product poured on it through the second distribution station solidifies before

to escape from the core.

  On the other hand, still according to the present invention, the width of the fixed core is equal to the distance separating the

two metal elements.

  According to another characteristic of the present invention,

  tion, the thickness of the core corresponds substantially to the

  the channel initially planned between the two

  the total height of the connecting elements,

  and the installation further comprises means capable of supporting

  the fixed nucleus above the first organ.

  According to another important characteristic of the pre-

  In this invention, the upper surface of the fixed core is

  covered with an anti-sticking or lubricating material vis-à-vis the heat insulating product poured through the second distribution station. According to an advantageous variant embodiment, the anti-sticking or lubricating material covering the fixed core

  is constituted by a fluid brought through a system of food

  passing through said fixed core.

  The installation also preferably includes

  means adapted to mechanically remove

  upper and / or lower connecting the two metal elements.

  In addition, the present invention relates to

  obtained by the implementation of the previously defined method.

  According to a feature of the present invention, said metal elements are provided on their surfaces respectively opposite, ribs defining at least

  two superimposed grooves, on each of the elements, in the-

  which penetrates the thermal insulation product.

  Other features and advantages of the pre-

  invention will appear on reading the description

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 to 6 show the various stages of implementation of the method according to an alternative embodiment of the present invention. , each of these said figures corresponding more precisely to a schematic cross-sectional view of the section at each of these stages,

  FIG. 7 represents a cross sectional view of

  dirty of a metal section with thermal break in accordance with another embodiment of this embodiment

invention, in the finished state.

  To fully understand the present invention, we will de-

  first write the structure of the metal profile

  it is desired to obtain, with regard to FIG.

  As shown in this FIG. 6, the metal profile 10, according to the present invention, consists, in the finished state, of two separate metallic elements, 20 and 30 interconnected by means of two separate connecting members. 40, 41 thermally insulating, forming

thermal break.

  Said separate metallic elements 20 and 30

  respectively feel walls 21 and 31, planes and sensi-

  parallel, spaced a given distance from each other

  laying to the width of the connecting members 40 and 41 above.

  The surfaces of the walls 21 and 31, facing each other, are respectively provided with ribs 22, 23, 24 and 25, and 32, 33, 34 and 35 which define two grooves on each of the elements 20 , 30, grooves in which

  are engaged the connecting members 40 and 41.

  Preferably, as shown in FIG. 6, the ribs 22 to 25 and 32 to 35 delimit grooves with converging edges. It is easily understood that such an arrangement makes it possible to ensure a stable immobilization.

  and correct linkages 40 and 41 More precise-

  according to the embodiment shown in the figure

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  6, the grooves delimited by the ribs 22 to 25 and 32

  at 35 have in cross section a dovetail shape.

  Of course, the aforementioned grooves can take any

other appropriate form.

  The free space of matter existing between the organs

  link 40 and 41 has been referenced 43 in FIG.

  Of course, the thickness of each of the organs of

  link 40 and 41, and the height of the intermediate space

  43 will be easily determined according to the standards imposed for the coefficient of thermal conductivity of the whole on the one hand, and by the heat transfer coefficient of each of the members 40 and 41, on the other hand,

  while taking into account the mechanical rigidity imposed.

  For the rest, the particular structure of the said ele-

  metal is of little importance and will not be described in detail. However, as shown in the figure

  6, the first element 20 has a single general wall-

  21, of a width much greater than the width of the

  wall 31 of the second element 30 while the latter is

  essentially composed of four walls 31, 36, 37 and 38,

  and linked together in pairs in order to delimit

  miter an inner chamber 39 of rectangular cross section.

  Of course, the metal elements can take

  all appropriate forms and include, for example,

  ribs 50 delimiting grooves of any suitable shape.

  to support any suitable accessory.

  We will now describe the method for producing

  profiles according to the present invention.

  FIG. 1 is shown in cross-section

  a profile, at the exit of the profiling die.

  ve in this figure 1 the two metal elements 20 and 30 previously mentioned However, these elements 20 and 30 come out of the die in the form of a one-piece assembly In fact, on the one hand the free edges of the ribs 22 and 32 upper,

  mentioned above, are interconnected by a sensitive wall 60

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  normal to the walls 21 and 31 of the elements 20 and 30,

  besides the free edges of the ribs 25 and 35, lower,

  are interconnected by a second lower connecting wall

  also 61 substantially normal to the walls 21 and 31 of the elements 20 and 30. In such a case, as shown in Figure 2, the method according to the present invention comprises a preliminary step of removing mechanically,

  with the help of any appropriate organ 01 (schematically

  shown in the figures), the upper wall 60 of connection

  cited. As schematically represented on the

  3, the metal elements 20 and 30 are then moved

  simultaneously, on themselves, and at the same time

  the other (that is, perpendicular to the plane of the

  re), below a spremier distribution station Pl (schematic

  thermally insulating product, in a position such that a channel provided between the elements is

open up.

  Said thermal insulation product must present itself

  initially in the semi-fluid state to penetrate the reas-

  The thermal insulation product must, however, subsequently solidify to have high mechanical characteristics. By high mechanical characteristics, it is meant a sufficient rigidity to ensure a connection between the above-mentioned elements and to adapt closely to the geometry of the latter.

  correct of the two elements 20 and 30 between them.

  In this position, as defined in the figure

  3, a given amount of thermal insulation product is

  in the channel formed between the two elements 20, 30.

  According to the embodiment shown, said channel is constituted by the lower connecting wall 61 and by

  the internal surfaces, facing, the walls 21 and 31 preci-

elements 20 and 30.

  Of course, according to another variant of implementation of the method, it is conceivable that the two elements

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  20 and 30 are initially separated In such a case, the bottom of the channel adapted to receive the thermal insulating product may be constituted by the upper surface of a

  support element carrying the elements 20 and 30.

  The quantity of thermal insulation product that it

  just poured into said canal to achieve the first or-

  40, is determined such that said insulating product engages in the first groove provided on

  each of the elements 20 and 30 and fill at least this one.

  It is recalled that the first groove is delimited on the element by the lower ribs 24 and 25, and on the element

  , by the lower ribs 34 and 35 -

  Of course, to achieve the first link organ

  its thermal insulation 40, all along the bottom of the channel, it is necessary to move relatively and longitudinally

  elements 20 and 30 with respect to the first distribution station

  Preferably, the latter is fixed and the elements and flows at the outlet of the profiling die.

  after removal of the upper wall 60 above.

  As shown in Figure 4, the

  in accordance with the present invention then consists of moving

  along a fixed core 70, and on both sides of the

  the latter, simultaneously, on themselves, and parallel to each other, (that is to say, perpendicular to the plane of the

  figure), the two metal elements 20, 30.

  By fixed core 70 is meant a substantially fixed core with respect to the first distribution station Pi, and by

  ratio at which the metal elements 20 and 30 are movable.

  In other words, the present invention also applies

  in the case where the metal elements 20 and 30 are kept physically fixed and the core 70 as well as the stationary product distribution stations with respect to the

  core 70, are displaced with respect to said metallic elements

  The upper surface of the core 70, generally horizon-

  tale, corresponds substantially to the level of the ribs 23, 33

  of the second groove provided on each of the ele-

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  20 and 30 The upper surface of the core 70 covers

  sibly the distance separating the elements 20 and 30, so as to arrange, between them, a second directed channel

to the top.

  Preferably, as shown in FIG. 4, the core 70 has, in cross-section, a shape substantially complementary to the intermediate space 43 left free between the two elements 20, 30, between the two aforementioned grooves. More precisely, the core 70 has in cross section a form complementary to the envelope delimited by the upper surface of the first member of

  link 40, a first rib 34, a portion of the surface

  this of the wall 31, a second rib 33, a corrugated surface

  corresponding to the desired lower limit of the second connecting member 41, a third rib 23, a portion of the

  surface of the wall 21, and finally a fourth rib 24.

  In this case, the core 70 has a cross section

  rectangular in shape, with truncated angles.

  As schematically shown in FIG. 5, the elements 20 and 30 which are slid over the core

  fixed 70 then fall below a second distribution

  Bution P 2 (schematically represented) thermal insulating product disposed above the fixed core 70 This product flows in the channel consisting of the upper surface of the core and the side walls of the elements 20 and 30,

  to constitute the second connecting member 41.

  Again, preferably, the thermal insulation product

  initially presents a semi-fluid state, but

  subsequently changes to-present characteristics

* High able to rigidly hold the elements 20 and 30.

  The quantity of thermal insulation product cast

  above the core 70 is determined so that this

  insulating material fills the second defined groove of a

  by the ribs 22 and 23, on the other side by the ribs

32 and 33.

  It is easily understood that to make the second connecting member 41, all along the metal elements 20 and 30,

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  it is necessary to move relatively and long-terminal

  metal elements 20 and 30 and the second distribution station P 2 while maintaining substantially fixed said

  fixed core 70 relative to the second distribution station.

  The bottom wall 61 connecting the two elements 20 and 30 can be removed at any suitable time by means of a mechanical tool 02 (schematically shown) provided for this purpose.

  effect According to the embodiment shown on the

  1 to 6, said wall 61 is eliminated after formation of the second connecting member 41. This arrangement has the advantage that the wall 61 ensures the rigidity of the assembly.

  until both elements 20 and 30 are suitable

  are connected together by two connecting members 40 and 41. However, it is also conceivable that the lower wall 61 is removed before the second connecting member 41 is formed. The only requirement here is that the elements 20 and 30 are correctly maintained one by

  to the other and that the wall 61 is eliminated after

  lidification of the thermal insulation product poured on it

  and constituting the first connecting member 40.

  The length of the fixed core 70 which is integral with

  external means (not shown) independent of the aforesaid

  20 and 30 is determined such that the thermal insulation product 41 cast on it solidifies before

to escape the nucleus.

  Preferably, the upper surface of the core 70 is

  covered with anti-stick or lubricant material vis-à-

  screw of the heat-insulating product 41 cast.

  thermal insulation flowing from the second distribution

  Bution adheres to the walls of the elements 20 and 30, and in particular to the internal surface of the grooves presented by them, without adhering to the upper surface of the core 70.

  it can thus be expected that the anti-stick or lubricant material

  in question is constituted by a fluid brought

  a feeding system passing through the fixed core 70.

  Such a fluid can be used also, if it is necessary

  to ensure a regulation of the core temperature 70. It is clear that all the steps of the method according to the present invention that have just been

  described can be implemented continuously, on the

  In fact, said process steps do not require any reversal or modification of the position of the elements of the profiling die of said metal elements.

  20 and 30, and the subsequent removal of organs

  Conques It is therefore sufficient to provide mechanical tools 01 and 02 eliminating the walls 60 and 61, as well as interposed

  between these mechanical tools, a first distribution

  thermally insulating product P1 of the core support means 70 (not shown), then a second station P 2 of

  thermally insulating product distribution These three last

  mediums can of course be very close together.

  Preferably, these are kept perfectly fixed in the installation and the elements 20, 30, coming out of

  the profiling sector are directed below these

  distribution and means supports that as has already been mentioned, a kinematic reversal of the movement

can be considered.

  It is clear that thanks to the method according to the present invention, no raw material is lost since the core 70 of short length can be used for an almost unlimited length of profiles, on the other hand, the finished profile as shown on FIG. 6 does not include any thermal bridge between the elements 20 and 30, these being connected only by thermally connecting members

insulators 40, 41.

  In other words, the elements 20 and 30 slide on the core 70, which by its section provides guidance and support thereof In the case where it is desired to produce a metal section, as shown in FIG. figure 7

  consisting of at least two metallic elements 20 and 30

  and linked together by at least three linkage

  its separate 40, 41, 42 forming thermal break, just

  to repeat the above steps, at least once, using

  reading a second fixed core and a third distribution

  thermally insulating product located above the latter, these elements being disposed downstream of the first core

  and the second product distribution station P 2.

  It should also be noted that the means used for implementing the method according to the

  present invention are simple, inexpensive and not bulky.

  In FIG. 7, the ribs 26 and 27 are referenced

  provided on element 20 to form a third groove.

re housing the connecting member 42.

  Similarly, 51 and 52 were referred to as

  provided on the wall 31 of the element 30, to constitute

  a third groove adapted to house the other end of the

linkage 42.

  The present invention is of course also applicable to the products obtained by the implementation of the method which has just been described and to the installation used for a

such implementation.

  This installation has already been widely mentioned in the foregoing description, and will therefore not be described in

  detail However, it should be noted that in addition to the positions P1 and P2 thermally insulating product distribution, fixed core 70 and means (not shown) able to support the core 70 above the first connecting member, the installation also preferably comprises means (not shown) for guiding and driving the metal elements. Such means may, for example, consist of

  of conventional drive rollers in themselves.

  The process according to the present invention

  comes in particular for the realization of profiles in al-

lightweight binding, such as aluminum.

  Of course, the present invention is not limited to the embodiment that has just been described from which we can consider many variants in accordance with its

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mind.

  Thus, it is conceivable to achieve through this

  profiles composed of at least three metal

  separate, generally parallel, interconnected, two by two by at least two thermally

insulation.

  On the other hand, although according to the embodiment shown above, the figures, the fixed core 70 is rigid and has a cross section substantially complementary to the intermediate space 43, other variants can be envisaged. , to facilitate the sliding of the heat insulating product cast on the upper surface of the

  fixed nucleus, it can be adapted so that it pre-

  This can be obtained for example by using a stationary core 70 of Z section, whose lower flange rests on the ribs 24 and 34 and the upper gate is intended to receive the thermally insulating product. from the second distribution station.

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Claims (16)

  Process for the production of metal profiles with thermal break of the type consisting of at least two separate metallic elements (20, 30) connected between   using at least two connecting members (40, 41)   thermally insulating trimmed, characterized by the fact that it consists of moving along a fixed core (70) and   and other of it, simultaneously on themselves, and   two metal elements benefit one another.   the strips (20, 30) having an upwardly open channel therebetween, and forming at least one first (40) and second (41) thermally insulating connecting members, connecting the two metal elements (20, 30), by means of first (Pi) and second (P 2) thermally insulating product dispensing stations respectively disposed upstream and above the fixed core (70) for discharging said product, one at the bottom   said channel, and the other, above said fixed core (70).   Process according to Claim 1, characterized by   the fact that it also includes the preliminary stage   both mechanically removing an upper wall (60)   binding the two metallic elements (20, 30)> and shutting   initially said channel formed by the two elements (FIG. res 1 and 2).   Method according to one of the claims Liet 2,   characterized by the fact that the channel formed by the two elem-   is delimited by a metal bottom wall (61)   integral with the two elements (20, 30) and the side walls   and substantially vertical of these.   Process according to claim 3, characterized by   the fact that said lower wall (61) is mechanically eliminated   nically in a subsequent step after solidification of the heat insulating product (40) cast on it, which   form said first connecting member.   Method according to one of claims 1 to 4,   characterized in that it is implemented at the output 162537699   of the profiling die of said metal elements (20,   ) and by the fact that the said items (P1, P2) of   thermal insulation product and the fixed core (70) which   is bound by external means independent of those ele-   metal parts (20, 30) are kept fixed in relation to to said die.   Process according to one of claims 1 to 5,   characterized in that it consists in repeating the steps defined in claim 1 at least once, so as to produce metal sections consisting of at least two separate metal elements (20, 30) interconnected by   at least three separate connecting members (40, 41, 42) mantle thermal break (Figure 7).   7 Installation for the production of metal profiles   thermal breakers in accordance with one of the   Claims 1 to 6, characterized by the fact that   comprises means for guiding and driving the metallic elements (20, 30), a fixed core (70),   two positions (Pi, P 2) of thermal product distribution   mically insulating respectively arranged upstream of the core   fixed in relation to the direction of movement of the elements and above this fixed core (70).   8 Installation according to claim 7, characterized   in that said thermally insulating product is initiated   tially in the semi-fluid state, but solidifies by the following   te to exhibit high mechanical characteristics.   9 Installation according to one of claims 7 and 8,   characterized in that the length of the stationary core (70) is defined such that the thermal insulation product (41) cast on it through the second distribution station   (P 2) solidifies before escaping said core (70).   Installation according to one of claims 7 to 9,   characterized by the fact that the width of the fixed core (70)   is the distance between the two metallic elements 17 2577699 (20, 30).   11 Installation according to one of claims 7 to   characterized in that the thickness of the core (70)   is substantially equal to the height of the channel initially   seen between the metal elements (20, 30) minus the height   cumulative of said connecting members (40, 41).   12 Installation according to one of claims 7 to   11, characterized in that it comprises means capable of supporting the fixed core (70) above the first body of link (40).   13 Installation according to one of claims 7 to   12, characterized in that the upper surface of the fixed core (70) is covered with an anti-adhesive or lubricant material with respect to the heat-insulating cast product (41)   thanks to the second distribution station (P 2).   14 Installation according to one of claims 1 to   8, characterized in that the anti-sticking or lubricating material covering the fixed core (70) is constituted by a fluid supplied through a feed system passing through through said fixed core (70).   Installation according to one of claims 7 to   14, characterized in that it also comprises means (01, 02) adapted to mechanically remove walls   upper (60) and / or lower (61) connecting the two metal parts.   16 Profile obtained by the implementation of the process   according to one of claims 1 to 6,   17 Profile according to claim 16, characterized in that said metal elements (20, 30) are provided on their surfaces (21, 31) respectively opposite, ribs (22, 23, 24, 25, 32, 33, 34 , 35) defining at least two grooves superimposed on each of the elements, in   which penetrates the thermal insulation product.