Source: https://patents.google.com/patent/EP1349248A1/en
Timestamp: 2020-08-08 04:32:49
Document Index: 433593423

Matched Legal Cases: ['art 142', 'art 142', 'art 142', 'art 142', 'art 202', 'art 142', 'art 142', 'art 202', 'art 202', 'art 202', 'art 142', 'art 142', 'art 142', 'art 142', 'art 142', 'art 142', 'art 142', 'art 142', 'art 142', 'arts 142']

EP1349248A1 - Process and apparatus for manufacturing a profile by extrusion - Google Patents
Process and apparatus for manufacturing a profile by extrusion Download PDF
EP1349248A1
EP1349248A1 EP03290778A EP03290778A EP1349248A1 EP 1349248 A1 EP1349248 A1 EP 1349248A1 EP 03290778 A EP03290778 A EP 03290778A EP 03290778 A EP03290778 A EP 03290778A EP 1349248 A1 EP1349248 A1 EP 1349248A1
EP03290778A
EP1349248B1 (en
Dominique Carreno
Alain Scuttenaire
2002-03-28 Priority to FR0203963 priority Critical
2002-03-28 Priority to FR0203963A priority patent/FR2837739B1/en
2003-03-27 Application filed by Planet Wattohm SNC filed Critical Planet Wattohm SNC
2003-10-01 Publication of EP1349248A1 publication Critical patent/EP1349248A1/en
2012-08-15 Publication of EP1349248B1 publication Critical patent/EP1349248B1/en
238000001125 extrusion Methods 0.000 title claims abstract description 14
During extrusion of a profile, part (142A) of the outlet section of the die exit (142) is altered, causing non-linear variation in the path of a free longitudinal edge (15A) of the profile (10). An Independent claim is included for equipment to make a profile.
The present invention relates to a manufacturing method and device by extrusion of a profile.
The invention finds a particularly advantageous application in the manufacture of trunking bases of the type used for example for supporting, housing and protecting various devices, and particular of various electrical devices, as well as for the support, the housing and protection of the necessary conductors, cables or pipes serving these devices.
Usually, such a manufacturing process comprises the steps consisting in:
feeding an extruder with a material in the form of a powder or of aggregates;
heat this material to make it pasty;
pushing this pasty material through a die whose outlet section corresponds overall to the section of said profile; and
cool the profile obtained at the outlet of the die.
Depending on the type of material used, we obtain, using the process above, a profile which can be rigid or flexible.
We also know an extrusion process which allows to extrude rib side by side a flexible profile and a rigid profile and make them meet on a edge or joint strip while their temperatures are still high enough to allow the two materials to weld.
Such a process is usually used to produce rigid profiles fitted with flexible seals.
However, the main drawback of the aforementioned extrusion processes known is that they allow to obtain only a profile whose cross section transverse is identical over its entire length.
Finally, we know from document US 6 119 324 a manufacturing process by extrusion of a profile comprising an operation consisting in pushing a pasty material through a die whose outlet section corresponds overall in section of said profile. Furthermore, according to this method, provision is made for cut continuously or discontinuously the profile taken out of the die. For this do, a knife is arranged downstream from the outlet of the die.
Such a process is complex and requires tuning the speed of displacement of the knife to that of the profile leaving the die.
The present invention provides a new manufacturing process which overcomes the aforementioned drawbacks.
More particularly, the invention proposes a manufacturing process by extrusion of a profile comprising an operation consisting in pushing a pasty material through a die whose outlet section corresponds overall in section of said profile, characterized in that, during the operation a portion of said outlet section is varied so as to modulate the path of at least one free longitudinal edge of said profile along a path not straight.
According to a preferred variant of the process according to the invention, it is varies two different parts of said outlet section so as to modulate the path of two longitudinal free edges of the profile according to a path not straight.
According to a particularly advantageous characteristic of the process in accordance with the invention, each part of the cross-section is varied continuously exit from the sector.
Thus, one can obtain for example a profile whose free edge follows a sinusoidal trajectory.
According to a variant of the process according to the invention, the range is varied from sequentially each part of the die exit section.
In this way, one can obtain for example a profile whose edge free follows a path in slots.
According to a preferred embodiment of the process in accordance with the invention, to vary said part of the die outlet section, we partially close this part with a shutter which is moved to translation along the width or the height of said part between a first point and a second point spaced from each other.
According to this embodiment, the shutter can be positioned in front of said part of the section of the die.
You can also partially insert the shutter inside of said part of the die outlet section.
The first aforementioned solution consisting in positioning the shutter in front each part of the die outlet section, allows for easy realization without cutting or waste a profile with a single free modulated edge.
According to one embodiment of the method according to the invention, during the pushing operation is formed, through said part of the section of exit from the die, a return of a side wing or a partition said profile, and, during this pushing operation, by varying said part of the outlet section, the path of the free edge of said return is modulated according to a non-straight path.
According to another advantageous embodiment of the method according to the invention, during the pushing operation, is formed, through the part of the die exit section, two returns directed towards each other by two wings longitudinal sides of said profile, and, during this pushing operation, in varying said part of the output section corresponding to the formation returns, the paths of the free edges of said returns are simultaneously modulated along non-straight paths.
According to the above-mentioned embodiment, the paths of the free edges of said returns along identical non-rectilinear paths or different.
According to the aforementioned embodiment of the method according to the invention, one of the two returns from the profile obtained by extrusion to form a single-return profile with a non-straight free edge.
In this case, the cut back is recycled.
According to an advantageous characteristic of the process in accordance with the invention, a first channel of the die is supplied with rigid plastic material corresponding to the formation of part of the profile and, simultaneously, supplies flexible plastic to a second channel in the industry corresponding to the formation of another part of the profile, the joining between rigid and flexible plastics made near the section of exit from said die.
One can thus obtain, advantageously, according to the process in accordance with the invention, a profile having a bottom from which rise wings longitudinal sides whose returns are made of flexible plastic and which can extend at least in part substantially parallel to the bottom said profile to at least partially cover the longitudinal opening of the profile and constitute means for retaining cables or conductors electrical inserted in said profile forming a trough base.
In this case, the flexible nature of said returns combined with the journey not straight, sinusoidal or in slots, free edges of these allow advantageously for the installer to easily insert cables or conductors inside the profile.
The invention also relates to a device for manufacturing a profile. by implementing the aforementioned method, comprising a die whose section of outlet corresponds overall to the section of said profile and means supply of pasty plastic material to said die, characterized in that it comprises a shutter capable of closing off part of said outlet section corresponding to the formation of a part of said profile, this shutter being movable in translation along the width or the height of said part of said output section between a first point and a second point spaced from each other so as to vary said part of the die outlet section for modulate the path of at least one free longitudinal edge of said profile along a path not straight.
According to non-limiting and advantageous characteristics of the device according to the invention:
the shutter penetrates inside said part of the die exit section;
the end of the shutter is positioned in front of said part of the die exit section;
the device comprises elastic means for pressing said shutter against the front face of the die;
said elastic pressure means comprise a compression spring;
the means for translational movement of said shutter comprise a slide, of which the shutter is integral, mounted to slide in slides carried by the front face of the die and actuated in translation by control means;
said control means comprise a connecting rod / crank system;
said control means comprise a pneumatic, or hydraulic, or electric actuator system;
said control means comprise an oscillating mechanism;
said shutter is continuously movable; and
said shutter is movable sequentially.
Figure 1 is a partial schematic perspective view of an embodiment of the device according to the invention;
Figure 2 is an exploded view of Figure 1;
Figure 3 is a front view of Figure 1;
Figure 4 is a sectional view along the plane AA of Figure 3;
Figure 5 is a detail view of Figure 3 taken at the shutter;
Figure 6 is a sectional view along the plane BB of Figure 7;
Figures 7 and 8 are schematic detail views of the shutter of the device of Figure 1 positioned in low point and in intermediate position;
Figures 9 and 10 are schematic perspective views of two embodiments of the profile obtained using the device shown in Figures 1 to 8;
Figure 11 is a partial schematic view of an alternative embodiment of the device according to the invention;
Figure 12 is a sectional view along the plane CC of Figure 11;
Figure 13 is a partial schematic view of another variant of the device according to the invention;
Figure 14 is a schematic perspective view of the profile obtained using the device of Figure 13;
Figure 15 is a partial schematic view of another variant of the device according to the invention; and
FIG. 16 is a schematic perspective view of the profile obtained using the device of FIG. 15.
In Figures 1 to 8, a part of a device is shown. manufacture by extrusion of a profile 10, here a trough base, comprising a bottom 11 from which rise two longitudinal side wings 12, 13 parallel of which at least one carries a return 15.
This manufacturing device is an extruder which includes conventional means for feeding (not shown) a material in the form of powder or aggregates. This material is by example a plastic material of the PVC type.
This manufacturing device also conventionally comprises, means (not shown) for heating this material and making it pasty.
In addition, the device comprises a die 100 made up of several elements assembled to each other by means of screws V1, V2.
More particularly, the die 100 includes a first element 110 generally cylindrical through which a material supply channel 111 passes pasty.
The die 100 comprises, at the outlet of the first element 110, three plates juxtaposed, namely a rear plate 120, an intermediate plate 130 and a front plate 140.
The first element 110 of the die 100 has tapped orifices 113 intended to receive screws V1, V2 passing through holes 123, 133, 143 correspondents provided in the three plates 120, 130, 140 of the die 100.
In addition, the intermediate plate 130 is pierced with a threaded orifice 134 receiving a screw V2 passing through an orifice 144 provided in the front plate 140.
The rear plate 120 is crossed by the supply channel 111 which leads to an inlet section 131 of a first channel 1 passing through the plate intermediate 130.
This first channel 1 allows the formation of part of the profile 10.
More particularly, this first channel 1 allows the formation of the bottom 11 and longitudinal lateral wings 12, 13 of the profile 10 with, at the head of the wings longitudinal side, means for fixing a cover closing the profile.
The first channel 1 of the intermediate plate 130 of the die 100 leads to an inlet section 141 of the front plate 140.
Part of this entry section 141 corresponds to the section of the first channel 1 which extends through the front plate 140 to lead to part of the outlet section 142 of the die.
Another part of the entry section 141 forms the entry of a second channel 2 which crosses the front plate 140 and leads to another part 142A of the output section 142 of the die 100.
This second channel 2 allows the formation of the planned return (s) 15 at the head of the longitudinal lateral wings 12, 13 of the profile 10 to be produced.
The second channel 2 is supplied with pasty material by a channel feed 132 bent which is formed in the intermediate plate 130.
The supply channel 132 of the second channel 2 leads to a end in the inlet section 141 of the front plate 140 and at another end on one side of the intermediate plate 130 of the die in a pad P supply fixed by screws V3 to the die and having an inlet orifice of a conduit A for supplying a pasty material.
The outlet section 142 of the die 100 provided in the front face 140A of said front plate 140, therefore generally corresponds to the section of the profile 10 to perform.
It will be noted that, in the manufacturing device shown, it is possible to feed the first channel 1 of the sector with a first material pasty, via the feed channel 111, and simultaneously supply the second channel 2 of the sector with a second pasty material different from the first, via the supply channel 132.
The joining between the two different pasty materials crossing the first and second channels 1, 2 of the die are made by hot welding at near the outlet section 142 of the front plate 140 of the die 100.
Advantageously, when it is a trough base, the first channel 1 can be supplied with rigid plastic, to form the bottom and the wings longitudinal sides of said base, and the second channel 2 can be supplied with flexible plastic, to form flexible returns of said wings longitudinal sides of said base.
It should be noted that the second channel 2, extending parallel to the part of the first channel 1 corresponding to the formation of the bottom 11 of the profile, has a width I corresponding to the distance separating the longitudinal lateral wings from said profile and communicates at the outlet with the first channel 1 taken at the free edges of the longitudinal lateral wings of the profile.
Thus, through this second channel 2, we can form two returns directed towards each other each attached to a longitudinal lateral wing of the profile realized. These returns are here square returns extending parallel to the bottom of the profile and can cover a significant part of the opening longitudinal profile provided between the two longitudinal side wings, so that they form means for retaining cables or conductors electric introduced into said profile.
According to a particularly advantageous characteristic of the manufacturing shown in FIGS. 1 to 8, there is provision, at the outlet of the die 100, a shutter 201 capable of closing off the part 142A of the outlet section 142 of the die 100 corresponding to the formation of returns 15 from profile 10.
This shutter 201 is displaceable in translation along the width or the height I (width of the second channel 2) of said part 142A of the outlet section 142 between a first point and a second point located here on either side of the axis of symmetry of the profile (see FIGS. 7 and 8) so as to vary said part 142A of the outlet section 142 of the die 100 to modulate each of the paths of the free edges 15A of the returns 15 along complementary non-rectilinear paths.
Here, the shutter includes a punch 201, one end of which forms a angle α between approximately 100 and 140 °. This punch 201 is carried by a massive T-shaped part 202
The angled or pointed end of the shutter 201 penetrates to the interior of said part 142A of the outlet section 142 of the die 100, as shown more particularly in Figures 1, 4, 6, 7 and 8.
The punch 201 positioned in a central part of said part 142A of the outlet section 142, has a width determining the width of the longitudinal opening of the profile 10 defined between the free edges 15A of said 15 returns from the latter.
The means for translational movement of said shutter 201 include, according to the embodiment shown, a slide 204 is in the form of a bar to which the shutter 201 is attached and mounted sliding in runners 205A provided in studs 205 fixed to the by means of screw V5 on the front face 140A of the front plate 140 of the die 100. The slide 204 is actuated in translation by control means 210.
Here, the shutter 201 is secured to the slide 204 is produced through a cooperation of shapes between the slide 204 and the massive part 202 carrying the punch 201.
More particularly, the slide 204 has a groove 203, of which the shape corresponds to the T-shape of the massive part 202 carrying the punch 201, and in which the massive part 202 is engaged.
The slide 204 is pressed against the front face 140A of the plate before 140 of the die 100 so that, during its displacement in translation, its rear face 204A slides on the front face 140A of the front plate 140 in sector 100.
In addition, elastic means are provided for pressing said obturator. 201 against the front face 140A of the die 100.
These elastic pressure means comprise a spring compression 206 engaged in a blind housing which is provided in the part massive 202 of the shutter and which opens on the side of the front face 204B of the slide 204. This compression spring 206 is kept in compression in its housing by means of a plate 207 fixed on the front face 204B of the slide 204 by means of screws 208 cooperating with tapped holes 209 provided in the slide 204.
The control means 210 of the slide 204 carrying the shutter 201 allow it to be moved continuously to form, for example, a free edge a return along a sinusoidal path, or sequentially to form for example a free edge of a return following a slot route.
Here, as shown more particularly in FIG. 3, the means of slide 204 control includes a rod / crank system 210 but, according to other embodiments not shown, provision could be made that such control means comprise a jack system pneumatic or hydraulic, or electric, or a mechanism oscillating with cam or other.
According to a variant of the device shown in Figures 11 and 12, the second channel 2 'of the die 100 has a width substantially equal to the half that of the second channel 2 of the device shown in Figure 1 and is connects as output to part of the first channel 1 corresponding to the formation of one of said longitudinal side wings.
Thus, this device makes it possible to form a profile with a single return.
In addition, according to this variant, the shutter comprises as a punch a simple rectangular plate 201 ′, the end of which is positioned in front of and at proximity to part 142'A of outlet section 142 'of front plate 140 of the sector corresponding to the formation of said return and does not penetrate inside this part 142'A.
Such an embodiment is particularly advantageous for the formation of a profile with a single return to free board following a path not straight.
In this case, the shutter moves between a first point and a second point spaced from each other (figure 12 represents a position intermediate of the shutter where it covers an undrilled part of the die 100).
Using the two variants of the manufacturing device described previously, an extrusion manufacturing process is implemented particularly advantageous making it possible in particular to produce the profiles shown in Figures 9 and 10.
According to an essential characteristic of this manufacturing process, pushes a pasty material through the die 100 whose outlet section 142, 142 'generally corresponds to the section of the profile 10 to be produced, and, during the pushing operation, the part is varied, using the shutter 201, 201 ′ 142A, 142'A of said outlet section 142, 142 'which corresponds to the formation of the return (s) 15 so as to modulate the path of each free edge 15A of each return on a non-straight path.
When this part 142A, 142'A of said section is varied continuously output 142, 142 'of the die 100, one or more returns 15 can be obtained, the or the free edges follow sinusoidal paths, as shown in Figures 9 and 10.
The process implemented by the manufacturing device shown in Figures 1 to 8, consists of supplying rigid plastic to the first channel 1 of the die 100 corresponding to the formation of the bottom 11, the lateral wings longitudinal 12, 13 of the profile 10 and the hooking means 14 of a closing cover and simultaneously feeding plastic flexible the second channel 2 of the die 100 corresponding to the formation of returns 15 carried by the corresponding longitudinal side wings 12, 13, the rigid and flexible plastics are joined together when hot to near the exit section 142 of the die 100.
This joining is carried out by welding along a welding line 17 appearing on the profiles produced (see Figure 9).
It is interesting to note that the width of the shutter 201 of the device shown corresponds to the width of the longitudinal opening 16 of the profile defined between the two free sinusoidal edges 15A of the returns 15 of said profile 10 (see Figure 9).
The movement of the shutter 201 along the X axis (see Figures 7 and 8) allows to obtain during the extrusion of the profile 10 a return 15 in high point on one side of the axis of the profile 10 and another return 15 at the bottom point on the other side of the profile axis (see figure 7).
During the movement between its first and second points, the shutter 201 passes through an intermediate position shown in FIG. 8.
A profile is obtained at the outlet of the die, as shown in the figure 9, including the returns 15 carried by the longitudinal side wings 12, 13 parallel have a certain width extending parallel to the bottom 11 of the profile by partially covering the longitudinal opening thereof.
Therefore, such flexible returns advantageously form means for retaining electric cables or conductors current in such a profile.
Through the longitudinal opening 16 of such a profile, the installer can easily insert cables or electrical conductors inside of said section 10, by flexing deformation of said flexible returns.
The loading threshold of the profile 10 obtained corresponds to the point culminating or high point of each return 15 thereof.
To form a profile with a single return 15, as shown in the FIG. 10, it suffices to cut one of the two returns 15 from the profile 10 leaving the die 100 (see FIG. 9) of the device shown in FIG. 1. Advantageously, the cut back 15 is recycled.
The process implemented using the variant of the device shown in Figures 11 and 12 advantageously allows the profile to be formed directly 10 shown in FIG. 10 at the outlet of the die, because the part 142'A of the section outlet 142 'is connected to a part of the outlet section corresponding to the formation of a single longitudinal side wing.
In this case, the method implemented by this device consists in translate the shutter 201 'between a first point and a second point spaced from each other along the width or height of said part 142'A, an end face of said shutter coming into contact with the section outlet 142 '. In this case, in the intermediate position (shown in the Figure 12) the shutter 201 'is brought to come between a massive part of the die and the second channel 2 'opening into part 142'A of the section outlet 142 'from die 100.
According to another variant of the device shown in FIG. 13, the outlet section 142 "of the die 100 has a shape corresponding to a V-shaped section of a profile forming a trunking base.
Here, the second channel of the die 100 feeds a part 142 "A of this outlet section 142 "corresponding to the formation of a wall extending the return located at the end of an inclined longitudinal lateral wing of the profile 10 'in V.
This second channel, not referenced, is connected at the output to a part of the first channel corresponding to the formation of the longitudinal lateral wing corresponding.
Here, the shutter punch 201 penetrates inside the part 142 "A of the 142 "outlet section of the die and navigates the width or height of this in order to modulate the free edge of this wall along a non-rectilinear path.
The shutter 201 is identical to the shutter of the device shown in Figure 1, and the means for moving the shutter comprise also the sliding slide in the grooves of the studs 205 mounted in facade of the sector 100.
Depending on the distance of movement of the shutter 201 between its first point and its second point spaced from each other, we get an output of a die a material fall leaving by the part 142 "A of the outlet section 142 ". This drop of material leaves dissociated from the profile 10".
Using the variant of the device shown in Figure 13, we put implementing a process according to the invention similar to that implemented using the device shown in Figures 1 or 11, here the movement of the shutter 201 making it possible to obtain, during the extrusion of the profile 10 ', a wall 15' extending the return of one of the longitudinal side wings of said profile, the longitudinal free edge has a non-rectilinear path, here a sinusoidal path.
The profile 10 'obtained at the outlet of the die of the device shown in the Figure 13 is shown in Figure 14. It has a section generally in V with a bottom 11 'and two longitudinal side wings 12', 13 'rising from from the bottom in divergent directions and leading 14 'returns provided with means for attaching a closure cover. One of the said longitudinal side wings 12 ′ of profile 10 ′ has a return extended by the wall 15 'whose free edge 15'A longitudinal follows a sinusoidal path.
The wall 15 ′ can be flexible or rigid depending on the material power supply used.
According to another variant of the device shown in FIG. 15, the outlet section 142 "'from the front face 140 of the die corresponds to the section of the 10 "profile shown in FIG. 16.
Here, the profile 10 "has a bottom 11" and two side wings longitudinal 12 ", 13" which rise from the bottom in directions converging.
Said longitudinal side wings 12 ", 13" have no back and the device shown in Figure 15 modulates the edges longitudinal free of said longitudinal side wings 12 ", 13" according to identical non-rectilinear paths, here sinusoidal paths.
To do this, two shutters 201 are provided, working simultaneously and allowing to vary two parts 142 "'A of the output section 142"' corresponding to the formation of said longitudinal side wings 12 ", 13", in closing these parts so as to modulate the path of the two free edges 12 "A, 13 "A longitudinal of said profile 10" along a non-rectilinear path, here sinusoidal.
The displacement of the two shutters 201 is a displacement in translation identical to the movement of the shutter 201 of the device shown in Figure 1 and will not be described here again.
Essentially, each shutter 201 is integral with a slide 204 slidably mounted in grooves carried by studs 205, the control of the two shutters 201 being coordinated by a device servo allowing the two shutters to be moved simultaneously 201.
The 10 "profile obtained at the outlet of the device shown in FIG. 15 can, for example, be used as a cable guide for hi-fi or household appliances.
Of course, any form of control or control servo is conceivable for controlling the shutter of said device according to the invention depending on the output of the die profile.
The present invention is in no way limited to the embodiments described and represented, but the person skilled in the art will know how to make any variant conforms to his spirit.
In particular, it will be possible, using the method according to the invention, to modulate the path of a free edge of a return of a partition of a profile to split the interior volume of the latter.
Method for manufacturing by extrusion of a profile (10) comprising an operation consisting in pushing a pasty material through a die (100) whose outlet section (142) generally corresponds to the section of said profile (10), characterized in that , during the pushing operation, a part (142A) of said outlet section (142) is varied so as to modulate the path of at least one longitudinal free edge (15A) of said profile (10) according to a non-straight path.
Method according to claim 1, characterized in that two different parts (142 "'A) of the said outlet section (142"') are varied so as to modulate the path of two free edges (12 "A, 13" A) longitudinal section (10 ") along a non-rectilinear path.
Method according to one of claims 1 or 2, characterized in that each part (142A; 142'A; 142 "A;142"'A) of the outlet section (142; 142'; 142 ";142"') of the die (100).
Method according to one of claims 1 or 2, characterized in that each part (142A; 142'A; 142 "A;142"'A) of the outlet section (142; 142') is sequentially varied , 142 ", 142"') of the sector (100).
Method according to one of claims 1 to 4, characterized in that , to vary each part (142A; 142'A; 142 "A;142"'A) of the outlet section (142; 142'; 142 "; 142 "') of the die (100), this part (142A; 142'A;142"A; 142 "' A) is partially closed off with a shutter (201; 201 ') than the one moves in translation along the width or the height ( I ) of said part (142A; 142'A; 142 "A;142"'A) between a first point and a second point spaced from each other.
Method according to claim 5, characterized in that the shutter (201 ') is positioned in front of each part (142'A) of the outlet section (142') of the die.
Method according to claim 5, characterized in that the shutter (201) partially penetrates inside each part (142A; 142 "A;142"'A) of the outlet section (142; 142 ";142"') of the sector (100).
Method according to one of claims 1 to 7, characterized in that , during the pushing operation, there is formed, through said part (142'A; 142 "A) of the outlet section (142 '; 142 ") of the die (100), a return of a lateral wing or of a partition separating said profile, and, during this pushing operation, by varying said part (142'A;142" A) of the outlet section (142 '; 142 "), the path of the free edge of said return is modulated according to a non-rectilinear path.
Method according to one of claims 1 to 7, characterized in that , during the pushing operation, there is formed, through said part (142A) of the outlet section (142) of the die (100), two returns (15) directed towards each other by two longitudinal lateral wings (12, 13) of said profile (10), and, during this pushing operation, by varying said part (142A) of the outlet section (142) corresponding to the formation of the returns, the paths of the free edges (15A) of said returns (15) are simultaneously modulated according to non-rectilinear paths.
Method according to claim 9, characterized in that the paths of the free edges of said returns are modulated according to identical non-rectilinear paths.
Method according to claim 9, characterized in that the paths of the free edges of said returns are modulated according to different non-rectilinear paths.
Method according to one of claims 9 to 11, characterized in that one of the two returns from the profile obtained by extrusion is removed by cutting to form a profile (10) with a single return (15) with a non-straight free edge.
Method according to one of claims 1 to 12, characterized in that a first channel (1) of the die (100) is supplied with rigid plastic material, corresponding to the formation of a part of the profile, and, simultaneously, supplies flexible plastic with a second channel (2) of the die (100) corresponding to the formation of another part of the profile (10), the connection between the rigid and flexible plastics taking place near the section of outlet (142) from said die (100).
Device for manufacturing a profile (10; 10 '; 10 ") by implementing the method according to one of claims 1 to 13, comprising a die (100) whose outlet section (142; 142'; 142 ";142"') generally corresponds to the section of said profile (10; 10'; 10 ") and means for supplying pasty plastic material to said die, characterized in that it comprises a shutter (201; 201 ') able to close off a part (142A; 142'A; 142 "A;142"' A) of said outlet section (142; 142 '; 142 ";142"') corresponding to the formation of a part of said profiled (10), this shutter (201; 201 ') being displaceable in translation along the width or the height ( I ) of said part (142A; 142'A; 142 "A;142"' A) of said outlet section (142; 142 '; 142 ";142"') between a first point and a second point spaced from each other so as to vary said part (142A; 142'A; 142 "A;142"' A) of the outlet section (142; 142 ', 142 "; 142 "') of the die to modulate the path of at least one free edge (15A; 15'A; 12 "A, 13" A) longitudinal of said profile (10; 10 '; 10 ") along a non-rectilinear path.
Device according to claim 14, characterized in that the shutter (201) penetrates inside said part (142A; 142 "A; 142" 'A) of the section of outlet (142; 142 "; 142" ') from the die (100).
Device according to claim 14, characterized in that the end of the shutter (201 ') is positioned in front of said part (142'A) of the outlet section (142') of the die.
Device according to one of claims 14 to 16, characterized in that it comprises elastic means for pressing said shutter (201; 201 ') against the front face (140A) of the die (100).
Device according to claim 17, characterized in that said elastic pressure means comprise a compression spring (206).
Device according to one of claims 14 to 18, characterized in that the means for translational movement of said shutter (201; 201 ') comprise a slide (204), of which the shutter (201; 201') is integral, mounted sliding in slides (205A) carried by the front face (140A) of the die (100) and actuated in translation by control means (210).
Device according to claim 19, characterized in that said control means comprise a connecting rod / crank system (210).
Device according to claim 19, characterized in that said control means comprise a pneumatic, or hydraulic, or electric actuator system.
Device according to claim 19, characterized in that said control means comprise an oscillating mechanism.
Device according to one of claims 14 to 22, characterized in that said shutter (201; 201 ') is continuously movable.
Device according to one of claims 14 to 22, characterized in that said shutter (201; 201 ') can be moved sequentially.
EP03290778A 2002-03-28 2003-03-27 Process and apparatus for manufacturing a profile by extrusion Expired - Fee Related EP1349248B1 (en)
FR0203963 2002-03-28
FR0203963A FR2837739B1 (en) 2002-03-28 2002-03-28 Method and device for manufacturing extrusion of a profile
EP1349248A1 true EP1349248A1 (en) 2003-10-01
EP1349248B1 EP1349248B1 (en) 2012-08-15
ID=27799292
EP03290778A Expired - Fee Related EP1349248B1 (en) 2002-03-28 2003-03-27 Process and apparatus for manufacturing a profile by extrusion
EP (1) EP1349248B1 (en)
ES (1) ES2392961T3 (en)
FR (1) FR2837739B1 (en)
US4019414A (en) * 1976-01-12 1977-04-26 Monsanto Company Strand granulation machine
EP1160949A2 (en) * 2000-06-01 2001-12-05 Panduit Corp. Split fiber cover and raceway fitting
2002-03-28 FR FR0203963A patent/FR2837739B1/en not_active Expired - Fee Related
2003-03-27 ES ES03290778T patent/ES2392961T3/en active Active
2003-03-27 EP EP03290778A patent/EP1349248B1/en not_active Expired - Fee Related
FR2837739A1 (en) 2003-10-03
ES2392961T3 (en) 2012-12-17
EP1349248B1 (en) 2012-08-15
FR2837739B1 (en) 2005-02-18
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