ES3014905T3 - Equipment for high temperature heat-treatment of manufactured items, in particular for controlled cooling of aluminum extruded section bars - Google Patents

Abstract

Equipment (100) for the heat treatment of manufactured articles at high temperatures, in particular for the controlled cooling of extruded section bars of aluminum, said equipment (100) being adapted to be arranged downstream of an extrusion press defining an extrusion direction (103) of the extruded section bars downstream of the extrusion press (200), said equipment (100) comprising a support device (105) adapted to support at rest at least one of said extruded section bars in a substantially horizontal position; an upper cooling unit (500) arranged on said support device (105) and adapted to be switched by translation in a substantially vertical direction with respect to said support device (105) between a first upper position and a second lower position; a lower cooling unit (600) arranged on said support device (105); wherein said equipment (100) comprises ventilation means (501) adapted to generate a ventilated air flow and means adapted to generate a cooling liquid flow; wherein said lower unit (600) comprises a first plurality of outlets (601) and nozzles (602) in fluid communication respectively with said cooling fluid flow generating means, said outlets (601) and nozzles (602) each being adapted to convey a jet of cooling fluid towards said at least one extruded section bar (104). (Automatic translation with Google Translate, without legal value)

Description

DESCRIPTION

Equipment for high-temperature heat treatment of manufactured articles, in particular, for the controlled cooling of extruded aluminum bars

Field of the invention

[0001] The present invention relates to the technical field of steelmaking. In particular, the present invention relates to the technical field of the production of articles manufactured at high temperatures, even more particularly, to the technical field of the extrusion of aluminum section bars. In detail, the present invention relates to equipment for the heat treatment of articles manufactured at high temperatures, in even more detail, to equipment for the controlled cooling of extruded section bars made of aluminum. Document US6216485B1 discloses equipment according to the preamble of claim 1.

Background of the technique

[0002] Equipment is known and widely used in the technology of production of aluminium section bars comprising extrusion presses capable of extruding the material at high temperature, said equipment comprising heat treatment solutions, in particular, for cooling the extruded section bars after the extrusion press and along the extrusion line.

[0003] However, such prior art solutions offer a limited ability to control the cooling curve of the section bars. Furthermore, since the freshly extruded section bar still has a high temperature (generally above 500 °C) and therefore does not have a high structural rigidity, the extruded section bar must be extracted from the press and accompanied along the roller conveyor by a puller or gripper extractor device, which engages (couples) with the end of the extruded article exiting the press and pulls it along during extrusion, applying a slight traction towards the conveyor belts. The use of the shooter for these purposes requires the use of cooling stations of the type shown in Figure 1. Said stations 300 according to the prior art comprise, as shown, an upper unit 301 and a lower unit 302, both equipped with outlets 304 and nozzles 305, the outlets 304 being served by a ventilation system (not shown in detail) and therefore dedicated to the emission of air jets, the nozzles 305 being served by means (not shown in detail) for generating a pressurized cooling fluid, generally water, and therefore dedicated to the emission of jets of pressurized liquid or water.

[0004] The upper unit 301 can be translated along a substantially vertical direction (as indicated by the double arrow) between a lower position (shown in Figure 1) and an upper position (not shown), wherein, in the lower position, the unit 301 is located near the roller conveyor 303, so that the section bar 306, located on the roller conveyor 303, can be struck by air and water jets both from above and from the sides, wherein the outlets 304 and the nozzles 305 of the lower unit 302 ensure that the section bar 306 is struck by air and water jets both from below and from the sides.

[0005] Repositioning the upper unit 301 to the upper position makes it possible to free up the space below and thus make it available to the shooter (not shown).

[0006] Cooling stations according to the prior art of the type represented in Figure 1 have several disadvantages and/or drawbacks which the applicant intends to overcome or at least minimize by means of the present invention.

[0007] First of all, it should be noted that the presence of the water nozzles also on the upper unit 301 implies also the presence of means for distributing the coolant or at least pumping and/or sending the coolant to the nozzles on the upper unit 301. However, the direct consequence of such requirement is an increase in the weight of the upper unit 301 and therefore the need to provide appropriate means for vertically moving the upper unit 301, e.g. such as electric and/or hydraulic actuators, which are very costly both in terms of installation and maintenance.

[0008] Furthermore, the presence of the water nozzles in the upper unit 301 results in the need to make the upper unit 301, either completely or at least to a large extent, of corrosion-resistant material, such as stainless steel or similar materials, or at least to line the upper unit 301 or parts thereof with such corrosion-resistant materials, again in these cases with a notable increase in costs.

Objects of the present invention

[0009] A main object of the present invention is to provide equipment or a station for heat treatment that allows to overcome or at least reduce the disadvantages and/or drawbacks affecting equipment or stations for heat treatment according to the prior art.

[0010] In particular, an object of the present invention is to provide a station or equipment for the heat treatment of extruded aluminum section bars comprising a mobile upper unit characterized by low weight and made at least in part of non-corrosion-resistant materials, such as non-stainless steel.

Description of the present invention

[0011] According to the invention, the low weight of the upper unit allows the use of less expensive drive means than electric and/or hydraulic actuators, e.g. pneumatic actuators, to vertically move the unit.

[0012] Furthermore, and again in accordance with the invention, the possibility of using materials other than stainless steel to make at least part of the upper unit allows for greater cost savings.

[0013] The present invention arises from the general consideration according to which the objectives represented above can be achieved, and the drawbacks of equipment according to the prior art can be effectively reduced by means of equipment for the heat treatment of manufactured articles at high temperatures, wherein the upper unit is equipped only with outlets for dispensing jets of cooling air. In fact, the absence of nozzles for dispensing jets of coolant makes it possible to avoid the presence, in the upper unit, of means for storing and/or pumping the coolant and, therefore, for containing the total weight of the upper unit.

[0014] Furthermore, the absence of coolant supply nozzles in the upper unit prevents the structure of the upper unit from being struck, during operation of the station, by the coolant, thus offering the possibility of making at least a large part of the upper unit from materials other than corrosion-resistant materials.

[0015] Therefore, based on both the predetermined objectives summarized above and the considerations made above, the present invention relates to an equipment or a station according to main claim 1 and to an equipment according to main claim 15, other embodiments of the present invention being defined by the dependent claims.

[0016] According to an embodiment as described, said upper unit comprises a cooling hood open towards said support device, wherein said outlets of said second plurality are located inside said hood, and wherein, with said upper unit located in said second lower position, said at least one section bar is housed at least partially inside said hood.

[0017] According to an embodiment as described, said outlets of said second plurality are located inside said hood so that, with said upper unit located in said second lower position, said at least one section bar is struck by the respective air jets both from above and laterally.

[0018] According to an embodiment as described, said upper unit can be moved by means of at least one pneumatic actuator.

[0019] According to an embodiment as described, said lower unit comprises at least a first movable partition and a second movable partition, each being able to change by translation in a substantially vertical direction with respect to said support device between a first lower own position and a second upper own position, wherein said second upper own position, said first partition and second partition are located on said at least one section bar on opposite sides of said at least one section bar.

[0020] According to an embodiment as described, in said first lower proper position, said first partition and second partition are housed, respectively, at least partially in a first guide and a second guide, respectively, wherein said first guide and second guide are arranged on opposite sides of said support device.

[0021] According to an embodiment as described, said lower unit comprises a first cover and a second cover restricted, respectively, to said first partition and to said second partition, and which can rotate respectively with respect to said first partition and second partition around the respective axes of rotation substantially parallel to said extrusion direction, each between a first own position and a second own closed position.

[0022] According to an embodiment as described, said first cover and second cover, in said first open proper positions, are arranged substantially parallel to said first partition and second partition, respectively, wherein said first and second covers, in said second closed proper positions, are arranged above said support device so as to each define an internal angle with said first partition and second partition, respectively. According to an embodiment as described, translational change of said first partition and second partition from their respective first lower positions to their respective second upper positions results in rotational change of said first cover and, respectively, the second cover from their respective first positions to their respective second positions, wherein translational change of said first partition and second partition from their respective second upper positions to their respective first lower positions results in rotational change of said first cover and, respectively, the second cover from their respective second positions to their respective first open positions.

[0023] According to an embodiment as described, said first cover and second cover are connected to said first partition and second partition, respectively, by means of links and cams, wherein the translational change of said first partition and second partition from their respective first lower positions to the respective second upper positions and the translational change of said first partition and second partition from the respective second upper positions to the respective first lower positions results in the rotational change of the first cover and the second cover from the respective first positions to the respective second positions, respectively, and the rotational change of said first cover and, respectively, second cover, from their respective second positions to their respective first positions, respectively.

[0024] According to an embodiment as described, said first partition and second partition are arranged by resting on a first pair of levers and respectively a second pair of levers that can be changed by rotation, wherein the change by rotation of said first pair of levers and second pair of levers in a first rotation direction results in the translational change of said first partition and respectively second partition from their respective first lower positions to their respective second upper own positions, wherein the change by rotation of said first pair of levers and second pair of levers in a second rotational direction opposite to said first rotational direction results in the translational change of said first partition and respectively second partition from their respective second upper positions to their respective first lower positions. According to an embodiment as described, a first lever of said first pair of levers and a second lever of said second pair of levers are rotated by means of a first electromechanical actuator and a second electromechanical actuator, respectively, and wherein a third lever of said first pair of levers and a fourth lever of said second pair of levers are connected to said first lever and said second lever, respectively, by first connection means and second connection means, respectively, such as cables or equivalent connection means.

[0025] According to an embodiment as described, said nozzles of said first plurality are supported by said first partition and second partition and said first cover and second cover, wherein said nozzles of said first plurality are positioned such that, with said first and second partition in respective second upper positions and with said first cover and second cover in respective second proper closed positions, said at least one section bar is struck by respective jets of coolant liquid from above, from below and laterally.

[0026] According to an embodiment as described, said nozzles of said first plurality are arranged in mutual fluid communication by means of connecting tubes housed within said first and second partition and first and second cover. According to an embodiment as described, said outlets of said first plurality are located below the roller conveyor, each between two successive rollers, to hit said section bars with respective air jets from below.

[0027] However, embodiments (not shown) are possible according to which the outlets of the lower unit are supported by the movable partitions and/or by the respective tiles or covers, as an alternative and/or in addition to those provided below the roller conveyor.

[0028] According to an embodiment as described, an extrusion equipment, in particular for the extrusion of aluminium section bars, comprises an extrusion press, wherein said extrusion equipment comprises equipment according to one of the embodiments of the present invention for the heat treatment of said aluminium section bars exiting said extrusion press, said equipment for the heat treatment of said aluminium section bars being arranged after said extrusion press along the extrusion direction defined by said extrusion press.

Detailed description of the present invention

[0029] A description of the embodiments of the present invention as represented in the drawings is provided below, wherein:

- Figure 1 shows a schematic cross-sectional view of equipment for heat treatment of articles manufactured at high temperatures according to the prior art;

- Figure 2 shows a perspective view of an extrusion equipment equipped with equipment for heat treatment of manufactured articles at high temperatures according to an embodiment of the present invention;

- Figure 3 shows a perspective view of the lower unit of an equipment for heat treatment of articles manufactured at high temperatures according to an embodiment of the present invention;

- Figure 4 shows a front view of the lower unit of an equipment for heat treatment of manufactured articles at high temperatures according to an embodiment of the present invention;

- Figure 5 shows a perspective view of the lower unit of an equipment for heat treatment of manufactured articles at high temperatures according to an embodiment of the present invention;

- Figures 6 and 7 show a cross-sectional view of the lower unit of equipment for heat treatment of manufactured articles at high temperatures according to an embodiment of the present invention.

[0030] It should be noted that the present invention is not limited to the embodiments disclosed below and depicted in the accompanying drawings; rather, all variants and/or changes to the embodiments as disclosed below and as depicted in the accompanying drawings that fall within the scope of the appended claims belong to the present invention.

[0031] The present invention is particularly advantageously applied to the cooling of extruded section bars made of aluminium, this being the reason why the present invention will be described hereinafter with particular reference to its applications in the field of cooling of section bars made of aluminium.

[0032] However, it should be specified that the possible applications of the present invention are not limited to those described below. Instead, the present invention can be conveniently applied in all cases where it is necessary to optimize the cooling cycle of an article manufactured at high temperature, e.g., made by casting molten metal. In Figure 2, reference numeral 100 identifies a station or equipment for the heat treatment of section bars exiting an extrusion press (not shown).

[0033] As shown (see also Figure 3), the station 100 comprises a roller conveyor 105 consisting of a plurality of rollers arranged in succession along the direction 103 (parallel to the extrusion direction) and free to rotate, each one, around its own axis of rotation perpendicular to the direction 103, the roller conveyor 105 being therefore adapted to support the section bar (not shown) and to allow its advance along the extrusion direction 103.

[0034] The station 100 further comprises an upper unit 500 adapted to be shifted in translation along a substantially vertical direction (see the double arrow in Figure 2), between an upper or rest position and a lower or working position (closer to the roller conveyor 105). The upper movable unit 500 further comprises a bell 502 open towards the roller conveyor 105, wherein, in the lowered or lowered position, the bell 502 is located close to the roller conveyor 105 so that the manufactured article is housed at least partially within the bell 502 (surrounded by the walls of the bell 502). According to one of the principles underlying the present invention, a plurality of outlets only for the supply of respective air jets are housed inside the bell 502, said outlets being served by ventilation means 501 (one or more fans and/or compressors and/or similar devices), wherein said nozzles are located inside the bell 502 so that, with the unit 500 in the lower working position, the manufactured article or section bar resting on the roller conveyor 105 can be struck by air jets from above and/or from both opposite sides (transversely with respect to the extrusion or feed direction 103). In the upper position (not shown), however, it is possible both to access the space below the bell 502 (for maintenance, inspections or similar tasks, or also to act on the manufactured article supported by the roller conveyor 105, if necessary) and to use a handle to extract the article from the press according to the methods described above and substantially known and therefore not described in detail for the sake of brevity.

[0035] Finally, it should be noted that the station or equipment 100 comprises drive means 503, in particular, but not necessarily, pneumatic, such as pneumatic actuators or the like, for driving the upper unit 500.

[0036] Hereinafter, the lower unit 600 of the equipment 100 according to an embodiment of the present invention will be described with reference to Figures 3 to 10.

[0037] As shown, the lower unit 600 comprises a box-shaped main body 700 open upwards in which the roller conveyor 105 is housed. The opposite side walls (transverse to the extrusion/feed direction 103) are hollow and open both upwards and downwards to define a first guide 605 and a second guide 606, respectively (Figures 6 and 7). A first partition 603 and a second partition 604 are received in said first guide 605 and second guide 606, respectively, each being translatable in a vertical direction (see the double arrow in Figure 7) between a position in which the first partition 603 and the second partition 604 are completely received within the first guide 605 and the second guide 606, respectively (Figure 6), and a position in which the first partition 603 and the second partition 604 are located at least partially outside the first guide 605 and the second guide 606, respectively (Figure 7). For this purpose, as shown in Figure 5, the lower unit 600 comprises a first electric reducer 630 and a second electric reducer 631, and a first pair of levers 620, a second pair of levers 620, a third pair of levers 621 and a fourth pair of levers 621, the levers of the first and second pairs 620 and of the third and fourth pairs 621 being adapted to be rotated, each around its own axis of rotation substantially horizontal and perpendicular to the extrusion direction 103. For this purpose, a first lever 6201 of the first pair of levers 620 is engaged with the electric reducer 630, while a first lever 6211 of the third pair 621 is engaged with the second electric reducer 631. Also, the second lever 6202 of the first pair of levers 620 is integrated with the first lever 6201, wherein the second lever 6202 is coupled to the first lever 6201. 6204 of the second pair 620 is integrated with the first lever 6203 of said second pair 620, the first lever 6201 of the first pair 620 being connected to the first lever 6203 of the second pair 620 by a tie rod 623. Similarly, the second lever 6212 of the third pair of levers 621 is integrated with the first lever 6211 of said third pair 621, wherein the second lever 6213 of the fourth pair 621 is integrated with the first lever 6214 of said fourth pair 621, said first levers 6211 and 6214 of said third and fourth pair 621 being mutually connected, respectively, by means of a tie rod 624. Therefore, it can be seen that the rotation of the first lever 6201 of the first pair of levers 620 (by means of the electric reducer 630) results in the rotation of the second levers 6202 and 6204 of said first and second pair 620, respectively, while the rotation (by means of the electric reducer 631) of the first lever 6211 of said third pair 621 results in the rotation of the second levers 6212 and 6213 of said third and fourth pair of levers 621, respectively.

[0038] The first partition 603 is arranged at rest on the first and second pair of levers 620, where, in the same way, the second partition 604 is arranged at rest on the third and fourth pair of levers 621, and where the levers 620 and 621, during their rotational movement, are housed at least partially in the first guide 605 and the second guide 606, respectively.

[0039] It can therefore be seen that rotation of the levers of the first and second pair 620 in a first rotational direction (counterclockwise with respect to Figure 5) results in raising the first partition 603, while rotation of the levers of the third and fourth pair 621 in a first rotational direction (clockwise with respect to Figure 5) results in raising the second partition 604. Instead, rotation of the levers of the first and second pair 620 in a rotational direction opposite to the first (clockwise with respect to Figure 7) results in lowering the first partition 603, wherein rotation of the levers of the third and fourth pair 621 in a rotational direction opposite to the first (counterclockwise with respect to the figures) results in lowering the second partition 604.

[0040] The drawings further show that the lower unit 600 comprises a first cover or tile 607 and a second cover or tile 608 restricted to the first partition 603 and second partition 604, respectively, and each being free to rotate around its own axis of rotation R1 and R2, respectively, in parallel to the extrusion/advance direction 103, wherein the cover or tile 607 and the cover or tile 608 are hinged to the upper edge of the first partition 603 and second partition 604, respectively.

[0041] In particular, the cover 607 and the cover 608 can each change by rotation between an open position (figure 6) in which they are arranged parallel to the first partition 603 and the second partition 604, respectively (and also housed in the first guide 605 and, respectively, in the second guide 606), and a closed position (figures 3, 5 and 7) in which they are arranged in a position above the roller conveyor 105, as well as oriented with respect to the first partition 603 and the second partition 604, respectively, so as to define internal angles a.

[0042] The change by rotation of the covers 607 and 608 is achieved by means of levers 611, each restricted at a first end to the first partition 603 and the second partition 604, respectively, as well as at the opposite end to a cam 610, the cams 610 being fixed, in a rigid manner, one to the first cover 607 and the other to the second cover 608.

[0043] It can therefore be seen that the translational change of the first partition 603 and the second partition 604 (in the manner clarified above) from the lowered position (Figure 6) to the raised position (Figures 3-5 and 7) results in the rotational change in a clockwise direction (with respect to the figures) of the first cover or tile 607 from its own open position to its own closed position and, respectively, the rotational change in a counterclockwise direction (with respect to the figures) of the second cover or tile 608 from its own open position to its own closed position. Likewise, the translational change of the first partition 603 and the second partition 604 (in the manner clarified above) from the raised position (Figures 3-5 and 7) to the lowered position (Figure 6) results in the rotational change counterclockwise (with respect to the figures) of the first cover or tile 607 from its own closed position to its own open position, and the rotational change clockwise (with respect to the figures) of the second cover or tile 608 from its own closed position to its own closed position, respectively.

[0044] The lower unit 600 is further equipped with outlets each dispensing a jet of air and with nozzles 601 and 602 each dispensing a jet of pressurized coolant, said outlets (not shown) being arranged and located below the roller conveyor 105, said outlets 601 and said nozzles 602 being supported in part by the partitions 603 and 604 and in part by the covers 607 and 608; said outlets are served by ventilation means, e.g. e.g., the same ventilation means 501 arranged in the upper unit 500 and/or ventilation means (not shown) dedicated to the lower unit 600, wherein the nozzles 601 and 602 for dispensing jets of coolant are served by a coolant storage and pumping system. Finally, as shown, the nozzles 601 and the nozzles 602 are mutually connected and put into communication with each other by means of connecting tubes or conduits 640 housed and/or obtained in the first partitions 603 and second partitions 604 and in the first and second covers 607 and 608, wherein the nozzles 601 and the nozzles 602 are arranged so that, with the partitions 603 and 604 and the covers or tiles 607 and 608 in the position in Figures 3-5 and 7, the manufactured article can be hit by coolant jets from above and/or from the side and/or from below, the nozzles 601 and the nozzles 602 being able to be used in predetermined groups according to the desired and/or required cooling cycle. Instead, the air outlets are designed to hit the section bar from below, each with its own air stream, and the outlets can also be used in predetermined groups according to the desired and/or required cooling cycle.

[0045] The operation of the apparatus 100 according to the embodiment shown in the drawings and disclosed above can be summarized as follows.

[0046] With the section bar disposed on the roller conveyor 105, if an air only cooling cycle is needed or desired, the upper unit 500 is placed in the lowered position, taking care to ensure that the partitions 603 and 604 are located in their own lowered positions, with covers or tiles 607 and 608 in their own open positions.

[0047] If, on the other hand, a cooling cycle with refrigerant (e.g., water) is required or desired, the operations are processed by placing the upper unit 500 in its upper position, as well as placing the partitions 603 and 604 in their own raised positions, and then the covers 607 and 608 in their own closed positions.

[0048] Evidently, the cooling cycle by means of the lower unit 600 can also be carried out using one or more selections (one or more groups) of the nozzles 601 and/or the nozzles 602 and/or the air outlets as desired to hit the manufactured article 104 with water jets from above and/or from one or both sides thereof and/or with air jets from below.

[0049] Finally, it should be noted that the cooling cycles using the upper unit 500 and the lower unit 600 can be carried out successively one after the other and/or alternatively one with respect to the other.

[0050] It has therefore been demonstrated, by means of the detailed description provided above of the embodiments of the present invention represented in the drawings, that the present invention makes it possible to obtain the desired objects and to overcome or at least limit the drawbacks affecting the prior art.

[0051] In particular, by means of the present invention, equipment is made available for the heat treatment of manufactured articles at high temperature, in particular for cooling extruded aluminium section bars, together with extrusion equipment, wherein:

The heat treatment equipment or station comprises a mobile upper unit which, being equipped only with air jet dispensing outlets, is characterized by a low weight and is made at least in part of non-corrosion-resistant materials, e.g., such as non-stainless steel;

The heat treatment equipment or station allows for the execution of cooling cycles in accordance with the requirements arising from modern extrusion techniques. Although the present invention has been explained above by means of a detailed description of its embodiments represented in the drawings, the present invention is obviously not limited to the embodiments described above and represented in the drawings; on the contrary, all variants and/or changes to the embodiments described and represented in the attached drawings that fall within the scope of the appended claims belong to the present invention.

[0052] Therefore, the scope of protection of the present invention is defined by the claims.

Claims (15)

1. Equipment (100) for the heat treatment of manufactured articles at high temperatures, in particular for the controlled cooling of extruded section bars made of aluminium, said equipment (100) being adapted to be arranged downstream of an extrusion press defining an extrusion direction (103) of the extruded section bars downstream of the extrusion press, said equipment (100) comprising a support device (105) adapted to support at rest at least one of said section bar in a substantially horizontal position; an upper cooling unit (500) arranged above said support device (105) and adapted to be changed by translation in a substantially vertical direction with respect to said support device (105) between a first upper position and a second lower position; a lower cooling unit (600) arranged on said supporting device (105); wherein said equipment (100) comprises ventilation means (501) adapted to generate a ventilated air flow and means adapted to generate a flow of cooling liquid; wherein said lower unit (600) comprises a first plurality of outlets and nozzles (601, 602) in fluid communication with said ventilation means (501) and said means for generating said cooling liquid flow, respectively, each of said outlets and said nozzles (601, 602) being adapted to convey a jet of air and cooling liquid, respectively, towards said at least one bar of extruded section; characterized in that said upper unit (500) is equipped with only a second plurality of vents in fluid communication with said ventilation means (501) and each being adapted to convey a jet of air towards said at least one bar of extruded section, and in that said upper unit (500) is made at least partially of non-stainless steel or non-corrosion resistant materials. 2. Equipment (100) according to claim 1, characterized in that said upper unit (500) comprises a cooling hood (502) open towards said support device (105), in that said vents of said second plurality are located inside said hood (502), and in that, with said upper unit (500) located in said second lower position, said at least one section bar is housed at least partially inside said hood (502). 3. Equipment (100) according to claim 2, characterized in that said vents of said second plurality are located inside said bell (502) so that, with said upper unit (500) located in said second lower position, said at least one section bar is struck by the respective air jets both from above and laterally. 4. Equipment (100) according to one of claims 1 to 3, characterized in that said upper unit (500) can be moved by means of at least one pneumatic actuator (503). 5. Equipment (100) according to one of claims 1 to 4, characterized in that said lower unit (600) comprises at least a first movable partition (603) and a second movable partition (604), each being able to change by translation in a substantially vertical direction with respect to said support device (105) between a first lower own position and a second upper own position, and in that, in said second upper own position, said first partition (603) and second partition (604) are located on said at least one section bar on opposite sides of said at least one section bar. 6. Equipment (100) according to claim 5, characterized in that, in said first lower proper position, said first partition (603) and second partition (604) are housed at least partially in a first guide (605) and a second guide (606), respectively, and in that said first guide (605) and second guide (606) are arranged on opposite sides of said support device (105). 7. Equipment (100) according to one of claims 5 and 6, characterized in that said lower unit (600) comprises a first cover (607) and a second cover (608) restricted to said first partition (603) and said second partition (604), respectively, and rotatable relative to said first partition (603) and second partition (604), respectively, around respective rotation axes (R1) and (R2) substantially parallel to said extrusion direction (103), each between a first proper open position and a second proper closed position. 8. Equipment (100) according to claim 7, characterized in that said first cover (607) and second cover (608), in said first proper open positions, are arranged substantially parallel to said first partition (603) and second partition (604), respectively, and in that said first cover (607) and second cover (608), in said second proper closed positions, are arranged above said support device (105) so as to define, each, an internal angle (a) with said first partition (603) and second partition (604), respectively. 9. Equipment (100) according to one of claims 7 and 8, characterized in that the translational change of said first partition (603) and second partition (604) from the first lower own positions to the second upper own positions results in the rotational change of said first cover (607) and second cover (608), respectively, from the respective first open own positions to the respective second closed own positions, and in that the translational change of said first partition (603) and second partition (604) from the respective second upper own positions to the respective first lower own positions results in the rotational change of said first cover (607) and second cover (608), respectively, from the respective second closed own positions to the respective first open own positions. 10. Equipment (100) according to claim 9, characterized in that said first cover (607) and second cover (608) are connected to said first partition (603) and second partition (604), respectively, by means of links (611) and cams (610), whereby the translational change of said first partition (603) and second partition (604) from the respective first lower eigenpositions to the respective second upper eigenpositions and the translational change of said first partition (603) and second partition (604) from the respective second upper eigenpositions to the respective first lower eigenpositions results in the rotational change of said first cover (607) and second cover (608), respectively, from the respective first open eigenpositions to the respective second closed eigenpositions, and the rotational change of said first cover (607) and second cover (608), respectively, from the respective second closed eigenpositions to the respective first open eigenpositions. 11. Equipment (100) according to one of claims 5 to 10, characterized in that said first partition (603) and second partition (604) are arranged by resting on a first pair of levers (620) and a second pair of levers (621), respectively, which can be changed by rotation, in that the change by rotation of said first pair of levers (620) and second pair of levers (621) in a first rotational direction results in the translational change of said first partition (603) and second partition (604), respectively, from the respective first lower own positions to the respective second upper own positions, and in that the change by rotation of said first pair of levers (620) and second pair of levers (621) in a second rotational direction opposite to said first rotational direction results in the translational change of said first partition (603) and second partition (604), respectively, from the respective second own positions superior to the respective first lower proper positions. 12. Equipment (100) according to claim 11, characterized in that a first lever of said first pair of levers (620) and a second lever of said second pair of levers (621) are rotated by means of a first electromechanical actuator (630) and a second electromechanical actuator (631), respectively, and in that a third lever of said first pair of levers (620) and a fourth lever of said second pair of levers (621) are connected to said first lever and said second lever, respectively, by first connection means (623) and second connection means (624), respectively, such as cables or equivalent connection means. 13. Equipment (100) according to one of claims 5 to 11, characterized in that said nozzles (601, 602) of said first plurality are supported by said first partition (603) and second partition (604) and said first cover (607) and second cover (604), and in that said nozzles (601, 602) of said first plurality are positioned such that, with said first partition (603) and second partition (604) in respective upper second proper positions and with said first cover (607) and second cover (608) in respective closed second proper positions, said at least one section bar (104) is struck by respective jets of coolant from above, from below and laterally. 14. Equipment (100) according to claim 13, characterized in that said nozzles (601,602) of said first plurality are arranged in mutual fluid communication by means of connection tubes (640) housed within said first partition (603) and second partition (604) and first cover (607) and second cover (608). 15. Extrusion equipment, in particular for the extrusion of aluminium section bars, said extrusion equipment comprising an extrusion press, characterised in that said extrusion equipment comprises equipment (100) according to one of claims 1 to 14 for the heat treatment of said aluminium section bars exiting said extrusion press, said equipment (100) for the heat treatment of said aluminium section bars being arranged after said extrusion press along the extrusion direction (103) defined by said extrusion press.