Attractive and reliable-supporting built-in reinforcing stile

Abstract

The invention discloses an attractive and reliable-supporting built-in reinforcing mullion, an outer frame built-in cavity is formed in an outer supporting mullion, the inner wall of the outer frame built-in cavity is connected with first hard filling polyurethane in a matched mode, the inner side of the first hard filling polyurethane is connected with first built-in galvanized steel in a matched mode in an embedded mode, and the first built-in galvanized steel is connected with a second built-in galvanized steel in a matched mode. An inner frame built-in cavity is formed in the inner supporting mullion, second hard filling polyurethane is connected to the inner wall of the inner frame built-in cavity in a matched mode, and second built-in galvanized steel is connected to the inner side of the second hard filling polyurethane in a matched mode. The aluminum alloy frame composed of the outer supporting mullion and the inner supporting mullion is combined with the composite structure filled with the galvanized steel lining and the polyurethane, the unification of the mechanical property, the heat preservation function and the machining convenience is achieved, key stress parts are enhanced through the galvanized steel, energy conservation and comfort are optimized through the polyurethane, and the supporting structure of the high-performance door and window is jointly formed.

Description

Technical Field

[0001] The present invention relates to the technical field of door and window frame structures, and particularly to an internally reinforced mullion that is beautiful and has reliable support. Background Art

[0002] The mullion is a dividing structure that distinguishes window frames and splices window frames. When a window is made as a whole, when it is necessary to meet the strength requirements, the strength needs to be increased through the horizontal or vertical mullions of the door and window. When the strength is insufficient, it needs to be spliced into two or more parts, and the mullion is set at the splicing position. In order to improve the strength of the mullion and reduce the weight, the mullion made of metal profiles is commonly used. Currently, the mullion is generally made of aluminum profiles. Since aluminum profiles not only have high strength but also have a lighter mass compared to profiles of other materials, they are widely used in various manufacturers. The Chinese patent discloses a reinforced mullion and a window with a reinforced mullion, with the application number CN201520624742.1. This patent improves the overall strength of the window frame by additionally adding a lower mullion;

[0003] However, currently, the method of improving the stiffness of profiles by using external reinforced mullions. Although the added reinforced mullion improves the stiffness of the profiles, making the additional external reinforced mullion with aluminum alloy will cause the overall appearance of the profile to protrude, resulting in an unappealing appearance that is difficult for customers to accept. Moreover, using aluminum alloy to make the reinforced mullion has a high cost and limited customer acceptance. At the same time, the connection between the mullion and the added reinforced mullion uses screws, resulting in direct contact between them, and the phenomenon of electrode corrosion occurs. After long-term use, the connection stiffness between them will decrease, affecting the overall connection strength and support stability. Summary of the Invention

[0004] The present invention provides an internally reinforced mullion that is beautiful and has reliable support, which can effectively solve the problems raised in the above background art. Currently, the method of improving the stiffness of profiles by using external reinforced mullions. Although the added reinforced mullion improves the stiffness of the profiles, making the additional external reinforced mullion with aluminum alloy will cause the overall appearance of the profile to protrude, resulting in an unappealing appearance that is difficult for customers to accept. Moreover, using aluminum alloy to make the reinforced mullion has a high cost and limited customer acceptance. At the same time, the connection between the mullion and the added reinforced mullion uses screws, resulting in direct contact between them, and the phenomenon of electrode corrosion occurs. After long-term use, the connection stiffness between them will decrease, affecting the overall connection strength and support stability.

[0005] To achieve the above object, the present invention provides the following technical solution: An aesthetically pleasing and reliably supported built-in reinforcing mullion, comprising an aluminum alloy main profile, an outer support mullion is provided at the top of the aluminum alloy main profile, and an inner support mullion is provided at the bottom of the aluminum alloy main profile. The outer support mullion and the inner support mullion are respectively connected to the aluminum alloy main profile by a snap-fit connection, and the outer support mullion and the inner support mullion are symmetrically arranged with respect to the aluminum alloy main profile. A frame profile cantilever is connected to the top of the outer support mullion, and an extrusion installation groove is formed at the edge of the frame profile cantilever;

[0006] An outer frame built-in cavity is formed inside the outer support mullion, and a first rigid filled polyurethane is fitted and connected to the inner wall of the outer frame built-in cavity. A first built-in galvanized steel is fitted and connected to the inside of the first rigid filled polyurethane in an inserted manner. An inner frame built-in cavity is formed inside the inner support mullion, a second rigid filled polyurethane is fitted and connected to the inner wall of the inner frame built-in cavity, and a second built-in galvanized steel is also fitted and connected to the inside of the second rigid filled polyurethane in an inserted manner.

[0007] Preferably, the aluminum alloy main profile is processed by an extrusion molding method, its surface is subjected to anodic oxidation and electrophoretic coating treatments, and the cross-section of the aluminum alloy main profile is rectangular, and a cavity is preset inside it.

[0008] Preferably, two extrusion installation grooves are formed at the edge of the frame profile cantilever. The inner diameters of the two extrusion installation grooves are different. The extrusion installation groove with a larger inner diameter is used for the snap-in installation of the corner piece, and the extrusion installation groove with a smaller inner diameter is used for the snap-in installation of the rubber strip.

[0009] Preferably, placement cavities are provided inside both the first rigid filled polyurethane and the second rigid filled polyurethane. The first built-in galvanized steel and the second built-in galvanized steel are respectively filled into the corresponding placement cavities, and the edges of the first built-in galvanized steel and the second built-in galvanized steel are closely attached to the inner walls of the corresponding placement cavities.

[0010] Preferably, the first rigid filled polyurethane is tightly bonded to the inner wall of the outer frame built-in cavity by a pasting method, and the first rigid filled polyurethane is closely attached to the inner wall of the outer frame built-in cavity.

[0011] Preferably, the second rigid filled polyurethane is tightly bonded to the inner wall of the inner frame built-in cavity by a pasting method, and the second rigid filled polyurethane is closely attached to the inner wall of the inner frame built-in cavity.

[0012] Preferably, the first built-in galvanized steel and the second built-in galvanized steel are respectively located at the inner center positions of the outer frame built-in cavity and the inner frame built-in cavity, and the first built-in galvanized steel and the second built-in galvanized steel are aligned in the vertical direction. The outer sides of the first built-in galvanized steel and the second built-in galvanized steel are both treated with galvanized anti-rust.

[0013] Preferably, thickened support frames are connected to the edge ends of the opposite sides of the outer support mullion and the inner support mullion, and the outer support mullion and the inner support mullion are respectively connected to the aluminum alloy main profile through the thickened support frames at their edge ends by snap connection;

[0014] Both side edge ends of the thickened support frame are fixedly connected with bumps, and two inclined blocks are arranged at the position between the two bumps at the edge end of the thickened support frame, and a docking slot is formed between one bump and one inclined block;

[0015] At the end positions of the aluminum alloy main profile corresponding to the end parts of the thickened support frame, a snap-bending part is arranged, and a docking block is connected to the end part of the snap-bending part corresponding to the docking slot.

[0016] Preferably, the aluminum alloy main profile is snap-connected and engaged with the docking slot formed by the edge part of the thickened support frame through the snap-bending part and the docking block at its end.

[0017] Preferably, the cross-section of the docking block is trapezoidal, the hypotenuse of the docking block is closely fitted with the inner hypotenuses of the bump and the inclined block respectively, and the bent part of the snap-bending part is in close contact with the bump.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: The structure of the present invention is scientific and reasonable, and it is safe and convenient to use:

[0019] 1. By filling the first rigid filled polyurethane and the second rigid filled polyurethane into the outer support mullion and the inner support mullion in a built-in manner respectively, and filling the first built-in galvanized steel and the second built-in galvanized steel into the first rigid filled polyurethane and the second rigid filled polyurethane respectively, the strength of the aluminum alloy main profile is increased by filling polyurethane and built-in galvanized steel, and a beautiful and reliable support built-in mullion is used to replace the traditional external mullion, reducing the production cost, without changing the appearance of the original profile, and having good overall aesthetics;

[0020] In addition, the built-in galvanized steel inside the filled polyurethane does not directly contact the profile, so there will be no phenomenon of electrode corrosion, increasing the long-term use stiffness, and the filled polyurethane is tightly adhered to the inner cavities of the outer support mullion and the inner support mullion by bonding, so that the force on the filled polyurethane and the built-in galvanized steel inside it is more uniform and reliable, further ensuring the support strength.

[0021] 2. The first rigid polyurethane filling and the second rigid polyurethane filling correspondingly filled inside the outer support mullion and the inner support mullion can effectively block the heat conduction between indoors and outdoors, reduce the overall heat transfer coefficient of the doors and windows, achieve excellent heat insulation performance. Moreover, the first rigid polyurethane filling and the second rigid polyurethane filling can also effectively absorb the vibration impact when the doors and windows are opened and closed, and improve the use comfort through buffering. In addition, the polyurethane filling built inside the outer support mullion and the inner support mullion can also prevent condensed water from condensing inside the mullion, reduce the noise transmission on the basis of achieving sealing and moisture-proof, improve the actual use performance, and meet the requirements of current building use.

[0022] 3. By symmetrically arranging the outer support mullion and the inner support mullion with the aluminum alloy main profile, the consistency of the force directions of the outer support mullion and the inner support mullion is ensured, and at the same time, the internal and external bidirectional support strength of the aluminum alloy main profile is improved. At the same time, the first rigid polyurethane filling is tightly filled inside the outer support mullion, the second rigid polyurethane filling is tightly filled inside the inner support mullion, and the first built-in galvanized steel and the second built-in galvanized steel are respectively placed at the inner centers of the first rigid polyurethane filling and the second rigid polyurethane filling. The first built-in galvanized steel and the second built-in galvanized steel are centered and aligned in the vertical direction, so that the first built-in galvanized steel and the second built-in galvanized steel have higher support stiffness when receiving force support, thereby improving the stiffness of the profile.

[0023] 4. By respectively arranging thickened support frames at the connection ends of the outer support mullion and the inner support mullion, combined with the convex blocks and inclined blocks arranged on the thickened support frames, it is convenient to form docking card slots at the edges of the thickened support frames. And through the clamping and bending part and the docking card block at the end of the aluminum alloy main profile, it is convenient to quickly perform alignment and clamping connection between the aluminum alloy main profile and the outer support mullion and the inner support mullion, improving the convenience of connection between the aluminum alloy main profile and the support mullion. And the inner wall of the docking card slot formed by the convex block and the inclined block is provided with an inclined edge, and by setting the docking card block as a trapezoidal structure, the support area of the docking card block is increased, combined with the tight fit connection between the clamping and bending part and the convex block, to effectively improve the support strength of the outer support mullion and the inner support mullion.

[0024] In summary, through the aluminum alloy frame composed of the outer support mullion and the inner support mullion, combined with the composite structure of the galvanized steel lining and the polyurethane filling, the unity of mechanical properties, heat preservation function and processing convenience is realized. The key stress parts are strengthened by the galvanized steel, and the energy saving and comfort are optimized by the polyurethane, jointly constituting the support structure of high-performance doors and windows. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention.

[0026] In the accompanying drawings:

[0027] Figure 1 is a schematic structural diagram of the present invention;

[0028] Figure 2 is a front view of the present invention;

[0029] Figure 3 is a schematic structural diagram of the main aluminum alloy profile of the present invention;

[0030] Figure 4 is a schematic structural diagram of the outer support mullion of the present invention;

[0031] Figure 5 is a schematic structural diagram of the inner support mullion of the present invention;

[0032] Figure 6 is a schematic diagram of the external strengthening mullion aluminum of the traditional profile;

[0033] Reference numerals in the figure: 1, main aluminum alloy profile; 2, outer support mullion; 3, inner support mullion; 4, frame profile cantilever; 5, extrusion installation groove; 6, outer frame internal cavity; 7, first rigid filled polyurethane; 8, first internal galvanized steel; 9, inner frame internal cavity; 10, second rigid filled polyurethane; 11, second internal galvanized steel; 12, thickened support frame; 13, convex block; 14, inclined block; 15, docking card slot; 16, clamping and bending part; 17, docking card block. Detailed Embodiment

[0034] The following describes the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0035] Embodiment: As Figure 1-6As shown in the figure, the present invention provides a technical solution, a built-in reinforcing mullion that is beautiful and has reliable support, including an aluminum alloy main profile 1. An outer support mullion 2 is provided at the top of the aluminum alloy main profile 1, and an inner support mullion 3 is provided at the bottom of the aluminum alloy main profile 1. The aluminum alloy main profile 1 is processed by extrusion molding, and its surface is treated by anodic oxidation and electrophoretic coating to improve the antioxidant ability and wear resistance of the aluminum alloy main profile 1. Moreover, the cross-section of the aluminum alloy main profile 1 is rectangular, and a cavity is preset inside it. This cavity is used to optimize drainage, install hardware, and increase local stiffness. The outer support mullion 2 and the inner support mullion 3 are respectively connected to the aluminum alloy main profile 1 by a snap connection, and the outer support mullion 2 and the inner support mullion 3 are symmetrically arranged relative to the aluminum alloy main profile 1. A frame profile cantilever 4 is connected to the top of the outer support mullion 2, and an extrusion installation groove 5 is formed at the edge of the frame profile cantilever 4. Two extrusion installation grooves 5 are formed at the edge of the frame profile cantilever 4, and the inner diameters of the two extrusion installation grooves 5 are different. The extrusion installation groove 5 with a larger inner diameter is used for the snap-in installation of the corner extrusion piece, and the extrusion installation groove 5 with a smaller inner diameter is used for the snap-in installation of the rubber strip, facilitating the quick and precise snap connection between the corner extrusion piece and the rubber strip and the frame profile cantilever 4;

[0036] The outer support stile 2 is formed with an outer frame built-in cavity 6, and the inner wall of the outer frame built-in cavity 6 is connected with a first hard filling polyurethane 7, and the inner side of the first hard filling polyurethane 7 is connected with a first built-in galvanized steel 8 in an inserted manner. The inner support stile 3 is formed with an inner frame built-in cavity 9, and the inner wall of the inner frame built-in cavity 9 is connected with a second hard filling polyurethane 10. The first hard filling polyurethane 7 is tightly bonded to the inner wall of the outer frame built-in cavity 6 by pasting, and the first hard filling polyurethane 7 is connected to the outer frame built-in cavity 6. The inner walls of the cavity 6 are tightly fitted, and the second hard filled polyurethane 10 is tightly bonded to the inner wall of the built-in cavity 9 of the inner frame by pasting, and the second hard filled polyurethane 10 is tightly fitted to the inner wall of the built-in cavity 9 of the inner frame. By tightly bonding the filled polyurethane to the inner cavity of the outer support middle stile 2 and the inner support middle stile 3, the force of the filled polyurethane and the built-in galvanized steel inside it is made more uniform and reliable, further ensuring the strength of the support. The inner side of the second hard filled polyurethane 10 is also connected by insertion. There is a second built-in galvanized steel 11, and the first hard-filled polyurethane 7 and the second hard-filled polyurethane 10 are both provided with an insertion cavity. The first built-in galvanized steel 8 and the second built-in galvanized steel 11 are respectively filled into the corresponding insertion cavity, and the edges of the first built-in galvanized steel 8 and the second built-in galvanized steel 11 are tightly fitted with the inner wall of the corresponding insertion cavity, which is convenient for filling the first hard-filled polyurethane 7 and the second hard-filled polyurethane 10 in an insertion manner inside the outer support middle bar 2 and the inner support middle bar 3 respectively. The first built-in galvanized steel 8 and the second built-in The galvanized steel 11 is located in the inner center of the outer frame built-in cavity 6 and the inner frame built-in cavity 9 respectively, and the first built-in galvanized steel 8 and the second built-in galvanized steel 11 are aligned in the vertical direction. The outer sides of the first built-in galvanized steel 8 and the second built-in galvanized steel 11 are both galvanized for rust prevention, which improves the internal and external bidirectional support strength of the aluminum alloy main profile 1. Combined with the setting of the first built-in galvanized steel 8 and the second built-in galvanized steel 11 being aligned in the vertical center, the first built-in galvanized steel 8 and the second built-in galvanized steel 11 have higher support stiffness when supported by force.

[0037] The outer support stile 2 and the inner support stile 3 are connected to the thickened support frame 12 at the opposite side, and the outer support stile 2 and the inner support stile 3 are respectively connected to the aluminum alloy main profile 1 by the thickened support frame 12 at their side ends;

[0038] Both side ends of the thickened support frame 12 are fixedly connected with a protrusion 13, and two inclined blocks 14 are provided at the side ends of the thickened support frame 12 between the two protrusions 13, and a docking slot 15 is formed between one protrusion 13 and one inclined block 14;

[0039] At both ends of the aluminum alloy main profile 1, at positions corresponding to the ends of the thickened support frame 12, there are clamping bent portions 16. And at the end of the clamping bent portion 16 corresponding to the docking card slot 15, there is a docking card block 17 connected. The cross-section of the docking card block 17 is trapezoidal. The hypotenuses of the docking card block 17 are closely fitted with the inner hypotenuses of the convex block 13 and the inclined block 14 respectively. The bent portion of the clamping bent portion 16 is in close contact with the convex block 13. By setting the docking card block 17 as a trapezoidal structure, the support area of the docking card block 17 is increased. Combining the close fit connection between the clamping bent portion 16 and the convex block 13, the support strength of the outer support middle stile 2 and the inner support middle stile 3 is effectively improved. The aluminum alloy main profile 1 is fitted and clamped with the docking card slot 15 formed at the edge of the thickened support frame 12 through the clamping bent portion 16 and the docking card block 17 at its end. By respectively arranging thickened support frames 12 at the connection ends of the outer support middle stile 2 and the inner support middle stile 3, and combining the convex block 13 and the inclined block 14 arranged on the thickened support frame 12, it is convenient to form a docking card slot 15 at the edge of the thickened support frame 12. And through the clamping bent portion 16 and the docking card block 17 at the end of the aluminum alloy main profile 1, it is convenient to quickly perform alignment and clamping connection between the aluminum alloy main profile 1 and the outer support middle stile 2 and the inner support middle stile 3.

[0040] The working principle and usage process of the present invention: This built-in beautiful and reliable support strengthened middle stile, in the actual application process, first, it is necessary to connect the aluminum alloy main profile 1 with the outer support middle stile 2 and the inner support middle stile 3. In the specific connection process, thickened support frames 12 are respectively arranged at the connection ends of the outer support middle stile 2 and the inner support middle stile 3. Through the convex block 13 and the inclined block 14 arranged on the thickened support frame 12, it is convenient to form a docking card slot 15 at the edge of the thickened support frame 12;

[0041] And through the clamping bent portion 16 and the docking card block 17 at the end of the aluminum alloy main profile 1, it is convenient to quickly perform alignment and clamping connection between the aluminum alloy main profile 1 and the outer support middle stile 2 and the inner support middle stile 3, improving the convenience of the connection between the aluminum alloy main profile 1 and the support middle stile. And after the connection between them, the inner wall of the docking card slot 15 formed by the convex block 13 and the inclined block 14 is provided with a hypotenuse, and the docking card block 17 is set as a trapezoidal structure, so as to increase the support area of the docking card block 17. Combining the close fit connection between the clamping bent portion 16 and the convex block 13, the support strength of the outer support middle stile 2 and the inner support middle stile 3 is improved;

[0042] After the aluminum alloy main profile 1 is respectively connected with the outer support middle stile 2 and the inner support middle stile 3, two extrusion installation grooves 5 are formed at the edge of the frame profile cantilever 4. The inner diameters of the two extrusion installation grooves 5 are different. The extrusion installation groove 5 with a larger inner diameter is used for the insertion and installation of the corner extrusion piece, and the extrusion installation groove 5 with a smaller inner diameter is used for the insertion and installation of the rubber strip, so as to facilitate the quick and accurate clamping connection between the corner extrusion piece and the rubber strip and the frame profile cantilever 4;

[0043] Next, after the outer support mullion 2 and the inner support mullion 3 are connected, by filling the first rigid filled polyurethane 7 and the second rigid filled polyurethane 10 in the inner parts of the outer support mullion 2 and the inner support mullion 3 in an implanted manner respectively, and filling the first built-in galvanized steel 8 and the second built-in galvanized steel 11 in the first rigid filled polyurethane 7 and the second rigid filled polyurethane 10 respectively, the strength of the aluminum alloy main profile 1 is increased by filling polyurethane and built-in galvanized steel, and a beautiful and reliable built-in reinforcing mullion is used to replace the traditional external reinforcing mullion. The traditional external reinforcing mullion is as Figure 6 shown, reducing the production cost, without changing the appearance of the original profile, and having better overall aesthetics. Its top is a built-in reinforcing aluminum profile;

[0044] After the first built-in galvanized steel 8 and the second built-in galvanized steel 11 are filled and connected, the first built-in galvanized steel 8 and the second built-in galvanized steel 11 do not directly contact the profile, and the phenomenon of electrode corrosion will not occur, increasing the stiffness during long-term use. And the filled polyurethane is tightly adhered to the inner cavities of the outer support mullion 2 and the inner support mullion 3 by bonding, making the force on the filled polyurethane and the built-in galvanized steel inside it more uniform and reliable;

[0045] During the actual support process of the outer support mullion 2 and the inner support mullion 3, the outer support mullion 2 and the inner support mullion 3 are symmetrically arranged with the aluminum alloy main profile 1, so that the force directions of the outer support mullion 2 and the inner support mullion 3 are the same. And the first built-in galvanized steel 8 and the second built-in galvanized steel 11 are respectively placed at the inner centers of the first rigid filled polyurethane 7 and the second rigid filled polyurethane 10, and the first built-in galvanized steel 8 and the second built-in galvanized steel 11 are centered and aligned in the vertical direction, so that the first built-in galvanized steel 8 and the second built-in galvanized steel 11 have higher support stiffness when bearing force, improving the stiffness of the profile;

[0046] During the specific use process, the first rigid filled polyurethane 7 and the second rigid filled polyurethane 10 filled correspondingly in the outer support mullion 2 and the inner support mullion 3 can effectively block the heat conduction between indoors and outdoors, reduce the overall heat transfer coefficient of the doors and windows, and achieve excellent heat insulation performance. The first rigid filled polyurethane 7 and the second rigid filled polyurethane 10 can also effectively absorb the vibration impact when the doors and windows are opened and closed, and improve the use comfort by means of buffering. In addition, the filled polyurethane can also prevent condensed water from condensing inside the mullion, reducing the noise transmission on the basis of achieving sealing and moisture-proof, and improving the actual use performance to meet the current building use requirements.

[0047] Finally, it should be noted that the above are only preferred examples of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An aesthetically pleasing and reliably supported built-in reinforcing mullion, comprising an aluminum alloy main profile (1), characterized in that: At the top of the aluminum alloy main profile (1), an outer support mullion (2) is provided. At the bottom of the aluminum alloy main profile (1), an inner support mullion (3) is provided. The outer support mullion (2) and the inner support mullion (3) are respectively connected to the aluminum alloy main profile (1) by means of snap connection, and the outer support mullion (2) and the inner support mullion (3) are symmetrically arranged with respect to the aluminum alloy main profile (1). At the top of the outer support mullion (2), a frame profile cantilever (4) is connected, and an extrusion installation groove (5) is formed at the edge of the frame profile cantilever (4). An outer frame built-in cavity (6) is formed inside the outer support mullion (2), and a first rigid filled polyurethane (7) is fitted and connected to the inner wall of the outer frame built-in cavity (6). The inner side of the first rigid filled polyurethane (7) is fitted and connected with a first built-in galvanized steel (8) in an inserted manner. An inner frame built-in cavity (9) is formed inside the inner support mullion (3), and a second rigid filled polyurethane (10) is fitted and connected to the inner wall of the inner frame built-in cavity (9). The inner side of the second rigid filled polyurethane (10) is also fitted and connected with a second built-in galvanized steel (11) in an inserted manner.

2. The built-in reinforcing mullion according to claim 1, which is beautiful and has reliable support, is characterized in that: The aluminum alloy main profile (1) is processed by extrusion molding, its surface is treated by anodic oxidation and electrophoretic coating, and the cross-section of the aluminum alloy main profile (1) is rectangular, and a cavity is preset inside it.

3. The built-in reinforcing mullion according to claim 1, which is beautiful and has reliable support, is characterized in that: Two extrusion installation grooves (5) are formed at the edge of the frame profile cantilever (4). The inner diameters of the two extrusion installation grooves (5) are different. The extrusion installation groove (5) with a larger inner diameter is used for the snap-in installation of the corner piece, and the extrusion installation groove (5) with a smaller inner diameter is used for the snap-in installation of the rubber strip.

4. The built-in reinforcing mullion according to claim 1, which is beautiful and has reliable support, is characterized in that: Placing cavities are provided inside both the first rigid filled polyurethane (7) and the second rigid filled polyurethane (10). The first built-in galvanized steel (8) and the second built-in galvanized steel (11) are respectively filled into the corresponding placing cavities, and the edges of the first built-in galvanized steel (8) and the second built-in galvanized steel (11) are in close contact with the inner walls of the corresponding placing cavities.

5. The built-in reinforcing mullion according to claim 4, which is beautiful and has reliable support, is characterized in that: The first rigid filled polyurethane (7) is tightly bonded to the inner wall of the outer frame built-in cavity (6) by means of pasting, and the first rigid filled polyurethane (7) is in close contact with the inner wall of the outer frame built-in cavity (6).

6. The built-in reinforcing mullion according to claim 4, which is beautiful and has reliable support, is characterized in that: The second rigid filled polyurethane (10) is tightly bonded to the inner wall of the inner frame built-in cavity (9) by means of pasting, and the second rigid filled polyurethane (10) is in close contact with the inner wall of the inner frame built-in cavity (9).

7. A built-in reinforcing mullion that is beautiful and has reliable support according to claim 1, characterized in that: The first built-in galvanized steel (8) and the second built-in galvanized steel (11) are respectively located at the central positions inside the outer frame built-in cavity (6) and the inner frame built-in cavity (9), and the positions of the first built-in galvanized steel (8) and the second built-in galvanized steel (11) are aligned in the vertical direction. The outer sides of the first built-in galvanized steel (8) and the second built-in galvanized steel (11) are treated by galvanized anti-rust treatment.

8. The built-in reinforcing mullion according to claim 1, which is beautiful and has reliable support, is characterized in that: On the opposite side edges of the outer support mullion (2) and the inner support mullion (3), thickened support frames (12) are connected, and the outer support mullion (2) and the inner support mullion (3) are respectively connected to the aluminum alloy main profile (1) through the thickened support frames (12) at their edge ends by snap connection; On both side edges of the thickened support frame (12), bumps (13) are fixedly connected, and at the position between the two bumps (13) at the edge end of the thickened support frame (12), two inclined blocks (14) are provided, and a docking card slot (15) is formed between one bump (13) and one inclined block (14); At the end positions of the two ends of the aluminum alloy main profile (1) corresponding to the end of the thickened support frame (12), a snap connection bending part (16) is provided, and at the end corresponding to the docking card slot (15) of the snap connection bending part (16), a docking card block (17) is connected.

9. The built-in reinforcing mullion according to claim 8, which is beautiful and has reliable support, is characterized in that: The aluminum alloy main profile (1) is connected to the docking card slot (15) formed at the edge of the thickened support frame (12) through the snap connection bending part (16) and the docking card block (17) at its end by fitting snap connection.

10. The built-in reinforcing mullion according to claim 9, which is beautiful and has reliable support, is characterized in that: The cross-section of the docking card block (17) is trapezoidal, and the hypotenuse of the docking card block (17) is closely fitted with the inner hypotenuse of the bump (13) and the inclined block (14) respectively, and the bending part of the snap connection bending part (16) is in close contact with the bump (13).

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