Anti-deformation aluminum profile hot extrusion double-die-core structure and using method thereof

Abstract

The invention relates to the technical field of aluminum profile hot extrusion dies, in particular to an anti-deformation aluminum profile hot extrusion double-die-core structure and a using method thereof.The anti-deformation aluminum profile hot extrusion double-die-core structure comprises a die body, flow dividing cavities are formed in the two sides of the interior of the die body, and double-die-core assemblies are installed in the flow dividing cavities through flow dividing bridges and located on the back face of the die body; a first connecting cavity and a second connecting cavity are formed in two sides of the back of the die body; a contact cavity is formed in the middle of the back of the die body; the double-mold-core assembly comprises a contact piece, positioning pieces are integrally formed at the two ends of the contact piece, the positioning pieces are embedded in the ends of the first connecting cavities, and the two sides of the outer walls of the positioning pieces are elastically connected with limiting pieces through mounting grooves. The cold liquid conveying piece enhances heat exchange, takes away heat, avoids heat accumulation, and improves the deformation resistance of the mold core.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of aluminum profile hot extrusion dies, in particular to an anti-deformation aluminum profile hot extrusion double-mold core structure and a use method thereof. BACKGROUND

[0002] In the hot extrusion processing of flat aluminum profiles, the contradiction between large-scale production demand and processing efficiency improvement is increasingly prominent. Flat aluminum profiles are widely used in building curtain walls, rail transit, electronic equipment and other industries due to their light and thin structure and balanced mechanical properties, and the market demand continues to grow. The traditional hot extrusion process adopts a single mold core die design, and only one aluminum profile can be formed by one extrusion, which is low in processing efficiency and difficult to match the rhythm of batch production, resulting in a prolonged production cycle and high unit cost, which has become a key bottleneck restricting the release of industry capacity. To solve this problem, the industry gradually promotes the hot extrusion die scheme of "double-mold core integrated design". The core of the scheme is to symmetrically arrange two groups of split bridges and flat mold cores with consistent structures in the die seat of the same extrusion die. The forming chambers of the two groups of mold cores are synchronously connected to the extrusion channel. Through this design, the single thrust of the extruder can act on the two groups of mold cores at the same time, realizing the synchronous forming of two flat aluminum profiles. Compared with the traditional single mold core die, the processing efficiency is directly doubled, the production cycle is effectively shortened, and the energy consumption and labor cost of unit products are reduced, providing an efficient solution for the large-scale production of flat aluminum profiles. However, the double-mold core structure has a significant heat deformation risk in actual application. Because the relative side spacing of the two flat mold cores is very small, a large amount of heat is generated during the extrusion process due to the high-speed friction between the aluminum profile and the inner wall of the mold core. The narrow space on the opposite side of the mold core makes it difficult for heat to dissipate through conduction, convection and other means, forming a clear "heat accumulation zone". This local heat concentration causes the temperature on the opposite side of the mold core to be much higher than that in other areas, causing uneven thermal expansion and contraction of the mold core material. Long-term operation in this condition can cause irreversible deformation such as bending and warping of the mold core. This not only leads to size precision exceeding the standard and surface quality defects of the extruded aluminum profile, but also significantly shortens the service life of the mold core and increases the cost of mold maintenance and replacement, thereby hindering the improvement of overall production efficiency. Therefore, an anti-deformation aluminum profile hot extrusion double-mold core structure and a use method thereof are provided to solve the problems in the background. SUMMARY

[0003] The purpose of the present application is to provide an anti-deformation aluminum profile hot extrusion double-mold core structure and a use method thereof to solve the problems raised in the background.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solutions: The utility model provides an anti-deformation aluminium profile hot extrusion double die core structure, including the die body, both sides in the die body are provided with the shunt cavity, the inside of shunt cavity is equipped with double die core assembly through the shunt bridge, double die core assembly is located the back of die body, the back of die body both sides are provided with first connecting cavity and second connecting cavity, the middle part of the back of die body is provided with contact cavity, double die core assembly includes contact piece, both ends of contact piece are integrative with the positioning piece, the positioning piece is embedded in the end of first connecting cavity, the both sides of positioning piece outer wall are connected with the limiting piece through the installation groove, the top of contact piece is integrative with the die core piece, the inside of first connecting cavity is embedded with first conveying pipe, the inside of second connecting cavity is embedded with second conveying pipe, the inside of contact cavity is embedded with cold liquid conveying piece, the die core piece includes die core body, the inside of die core body is embedded with the reinforcing piece, support rib and two side ribs.

[0005] As a further optimization of the present invention, wherein: the limiting piece includes an extrusion piece, the bottom of the extrusion piece is hinged to the bottom of the positioning piece mounting slot through a connecting shaft, a limiting claw is integrally formed on the middle part of the outer side of the extrusion piece, a support spring is fixed to the back of the extrusion piece, one end of the support spring is fixedly connected to the top of the positioning piece mounting slot.

[0006] As a further optimization of the present invention, wherein: the reinforcing piece includes a reinforcing pipe, conveying cavities are formed on both sides of the inside of the reinforcing pipe, reinforcing ribs are embedded and fixed in the middle part of the inside of the reinforcing pipe, a ratchet rod is fixed to the top of the conveying cavity, and ratchet teeth are arranged in an arc shape on the outer wall of the ratchet rod.

[0007] As a further optimization of the present invention, wherein: the cold liquid conveying piece includes a cold liquid conveying box, a plurality of heat-conducting protrusions are integrally formed on the lower surface of the cold liquid conveying box, a partition block is integrally formed on the middle part of the inside of the cold liquid conveying box, a one-way liquid inlet nozzle is installed on one side of the upper surface of the cold liquid conveying box, and a one-way liquid outlet nozzle is installed on the other side of the upper surface of the cold liquid conveying box.

[0008] As a further optimization of the present invention, wherein: the first connecting cavity, the second connecting cavity, and the contact cavity are in communication with each other, both ends of the first connecting cavity are in dovetail structure, and the end of the first connecting cavity is in communication with the inside of the shunt cavity.

[0009] As a further optimization of the present invention, wherein: the top end of the support rib is fixedly connected to the center of the top of the reinforcing pipe, the bottom end of the support rib is fixedly connected to the middle part of the upper surface of the contact piece, two side ribs are respectively located on both sides of the support rib, and the top ends of the two side ribs are respectively fixedly connected to both sides of the reinforcing pipe.

[0010] As a further optimization of the present application, wherein: the extrusion piece is inclined, the thickness of the extrusion piece is the same as the thickness of the limiting claw, the limiting claw is embedded and fixed on both sides of the end of the mold body, and the top end of the extrusion piece is provided with a contact groove.

[0011] As a further optimization of the present application, wherein: the top of the reinforcing pipe is in a rhombus structure, the top of the reinforcing pipe is embedded and fixed inside the mold core body, the bottom of the reinforcing pipe is in a horizontal structure, the bottom of the reinforcing pipe is embedded and fixed inside the positioning piece, and the inside of the reinforcing pipe is in communication with the end of the first conveying pipe.

[0012] As a further optimization of the present application, wherein: the vertical cross-section of the reinforcing rib is isosceles trapezoidal, and the length of the reinforcing rib is the same as the length of the reinforcing pipe.

[0013] The use method of the anti-deformation aluminum profile hot extrusion double-mold core structure according to any one of the preceding claims, characterized in that: Step one: before use, embed the cold liquid conveying piece in the contact cavity, embed the second conveying pipe in the second connecting cavity, embed the first conveying pipe in the first connecting cavity, embed the contact piece of the double-mold core assembly in the rear end of the shunt bridge, and embed the positioning pieces at both ends of the contact piece in the end of the first connecting cavity. When installing, the extrusion piece in the limiting piece rotates around the connecting shaft, and under the elastic support of the supporting spring, the limiting claw is embedded and fixed on both sides of the end of the mold body, the contact groove is in contact with the end of the mold body, and the stable installation of the double-mold core assembly on the mold body is completed. Step two: inject cooling liquid into the inside of the cold liquid conveying box through the one-way liquid inlet nozzle of the cold liquid conveying piece. Under the isolation effect of the isolation block, the cooling liquid directly flows into the corresponding first conveying pipe on one side of the inside of the cold liquid conveying box, and then flows into the inside of the reinforcing piece. Since the top of the reinforcing pipe is embedded in the inside of the mold core body, the bottom is embedded in the inside of the positioning piece, and the conveying cavity in the inside is in communication with the end of the first conveying pipe, the cooling liquid can cover the connection parts of the mold core piece, the contact piece and the positioning piece, and the pre-cooling of the key parts of the mold core is realized. Step three: during the aluminum profile hot extrusion process, the contact piece of the double-mold core assembly directly contacts the aluminum profile and bears the heat generated by high-speed friction. At this time, the cooling liquid in the inside of the reinforcing piece continuously flows, the triangular support structure formed by the supporting rib and the side rib enhances the structural strength of the mold core body, preventing it from deforming due to thermal expansion and contraction and extrusion stress. At the same time, the ratchet rod and the ratchet at the top of the conveying cavity bend to pierce the bubbles in the cooling liquid, continuously cooling the mold core body and the contact piece. Step four: after the extrusion is completed, stop injecting the cooling liquid, and the residual cooling liquid is completely discharged through the one-way liquid outlet nozzle. If the double-mold core assembly needs to be maintained or replaced, only need to press the extrusion piece of the limiting piece to make the limiting claw separate from the end of the mold body, and then the double-mold core assembly can be taken out from the mold body.

[0014] Compared with the prior art, the present application has the following beneficial effects: 1. The elastic limiting structure composed of the extrusion piece and the supporting spring is provided with the limiting piece, the extrusion piece is rotated during installation, the limiting claw is tightly embedded on both sides of the end of the die body, the double die core assembly is installed conveniently and fixed stably, displacement of the die core body during extrusion is avoided, the stability of hot extrusion and the forming precision of the aluminum profile are ensured, the triangular supporting structure formed by the supporting ribs and the side ribs enhances the structural strength of the die core body, prevents the die core body from being deformed due to thermal expansion and cold contraction and extrusion stress, and effectively improves the overall stability of the double die core structure. 2. The reinforcing piece and the cold liquid delivery piece are provided, the internal delivery cavity of the reinforcing piece accurately receives the cooling liquid delivered by the first delivery pipe, directional cooling of the key connecting parts of the die core body is realized, the heat conduction protrusions on the lower surface of the cold liquid delivery piece increase the heat exchange area and improve the heat dissipation efficiency, and the heat accumulation area is avoided on the opposite side of the die core, so that the anti-deformation capability of the die core is improved from the aspects of structure and thermal management. 3. The detachable double die core assembly is provided, when the double die core assembly needs to be maintained or replaced, the extrusion piece of the limiting piece is only pressed to make the limiting claw separate from the end of the die body, so that the double die core assembly can be taken out of the die body, the operation is convenient, the difficulty and cost of die maintenance and replacement are reduced, and the production efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present application. Figure 2 It is a schematic diagram of the structure of the double die core assembly of the present application. Figure 3 It is a schematic diagram of the structure of the combination of the contact piece and the die core piece of the present application. Figure 4 It is a schematic diagram of the enlarged structure of the limiting piece of the present application. Figure 5 It is a schematic diagram of the structure of the reinforcing piece of the present application. Figure 6 It is a schematic diagram of the enlarged structure of A of the present application. Figure 5 Figure 7 It is a schematic diagram of the overall demonstration structure of the present application. Figure 8 It is a schematic diagram of the cross-sectional structure of the cold liquid delivery piece of the present application.

[0016] In the figure: 1, die body; 2, shunt cavity; 3, double die core assembly; 11, first connecting cavity; 12, second connecting cavity; 13, contact cavity; 31, contact piece; 32, positioning piece; 33, limiting piece; 34, die core piece; 35, first delivery pipe; 36, second delivery pipe; 37, cold liquid delivery piece;​ 331, extrusion; 332, limit claw; 333, support spring; 334, contact groove; 341, core body; 342, reinforcing member; 343, support rib; 344, side rib; 3421, reinforcing tube; 3422, conveying cavity; 3423, reinforcing rib; 3424, ratchet rod; 3425, ratchet tooth; 371, cold liquid conveying box; 372, heat-conducting protrusion; 373, partition block; 374, one-way liquid inlet nozzle; 375, one-way liquid outlet nozzle. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0018] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0019] Please refer to Figures 1-8 The present application provides a technical solution: The utility model provides an anti-deformation aluminum profile hot extrusion double die core structure and a using method thereof, which comprises a die body 1, two sides of the inside of the die body 1 are provided with a shunt cavity 2, the inside of the shunt cavity 2 is provided with a double die core assembly 3 through a shunt bridge, and the double die core assembly 3 is located at the back of the die body 1; two sides of the back of the die body 1 are provided with a first connecting cavity 11 and a second connecting cavity 12, the middle of the back of the die body 1 is provided with a contact cavity 13, the first connecting cavity 11, the second connecting cavity 12 and the contact cavity 13 are communicated with each other, two ends of the first connecting cavity 11 are dovetail structures, and the end of the first connecting cavity 11 is communicated with the inside of the shunt cavity 2; the double die core assembly 3 comprises a contact piece 31, both ends of the contact piece 31 are integrally provided with a positioning piece 32, the positioning piece 32 is embedded in the end of the first connecting cavity 11, both sides of the outer wall of the positioning piece 32 are elastically connected with a limiting piece 33 through a mounting groove, the upper portion of the contact piece 31 is integrally provided with a die core piece 34, the inside of the first connecting cavity 11 is embedded with a first conveying pipe 35, the inside of the second connecting cavity 12 is embedded with a second conveying pipe 36, and the inside of the contact cavity 13 is embedded with a cold liquid conveying piece 37; the die core piece 34 comprises a die core body 341, the inside of the die core body 341 is embedded and fixed with a reinforcing piece 342, a supporting rib 343 and two side ribs 344.

[0020] As a further implementation of the scheme, the limiting piece 33 comprises an extrusion piece 331, the bottom of the extrusion piece 331 is hinged with the bottom of the mounting groove of the positioning piece 32 through a connecting shaft, the middle of the outside of the extrusion piece 331 is integrally provided with a limiting claw 332, the back of the extrusion piece 331 is fixed with a supporting spring 333, one end of the supporting spring 333 is fixedly connected with the top of the mounting groove of the positioning piece 32; Further, the extrusion piece 331 is in an inclined structure, the thickness of the extrusion piece 331 is the same as that of the limiting claw 332, the limiting claw 332 is embedded and fixed on both sides of the end of the die body 1, and the top end of the extrusion piece 331 is provided with a contact groove 334; Specifically, the elastic limiting structure composed of the extrusion piece 331 and the supporting spring 333 makes the double die core assembly 3 convenient to install and stable to fix, the limiting claw 332 is closely embedded with the die body 1, the displacement of the die core body 341 in the extrusion process is avoided, and the stability of hot extrusion and the forming precision of the aluminum profile are ensured; As a further implementation of the scheme, the reinforcing piece 342 comprises a reinforcing pipe 3421, both sides of the inside of the reinforcing pipe 3421 are provided with a conveying cavity 3422, the middle of the inside of the reinforcing pipe 3421 is embedded and fixed with a reinforcing rib 3423, the top of the conveying cavity 3422 is fixedly provided with a ratchet rod 3424 at the bending position, and the outer wall of the ratchet rod 3424 is fixedly provided with arc-shaped ratchet teeth 3425; Further, the top of the reinforcing pipe 3421 is in a diamond structure, the top of the reinforcing pipe 3421 is embedded and fixed in the inside of the mold core body 341, the bottom of the reinforcing pipe 3421 is in a horizontal structure, the bottom of the reinforcing pipe 3421 is embedded and fixed in the inside of the positioning piece 32, and the inside of the reinforcing pipe 3421 and the end of the first conveying pipe 35 are in communication with each other, the vertical section shape of the reinforcing rib 3423 is isosceles trapezoidal, and the length of the reinforcing rib 3423 is the same as the length of the reinforcing pipe 3421; Specifically, the design of the embedded reinforcing pipe 3421 enhances the structural strength of the connection part of the mold core body 341 and the positioning piece 32, and enables the conveying cavity 3422 to accurately receive the cooling liquid conveyed by the first conveying pipe 35, so as to realize directional cooling of the key connection part of the mold core body 341, and improve the anti-deformation ability of the mold core from the aspects of structure and heat management; As a further implementation of the present scheme, the cold liquid conveying piece 37 comprises a cold liquid conveying box 371, a plurality of heat-conducting protrusions 372 are integrally formed on the lower surface of the cold liquid conveying box 371, a partition block 373 is integrally formed on the inner side of the middle part of the cold liquid conveying box 371, a one-way liquid inlet nozzle 374 is installed on one side of the upper surface of the cold liquid conveying box 371, and a one-way liquid outlet nozzle 375 is installed on the other side of the upper surface of the cold liquid conveying box 371. Specifically, the heat-conducting protrusions 372 increase the heat exchange area between the cold liquid conveying box 371 and the contact cavity 13, and improve the heat dissipation efficiency, and the partition block 373 ensures that the cooling liquid is injected along the predetermined path. As a further implementation of the present scheme, the top end of the supporting rib 343 is fixedly connected with the center of the top of the reinforcing pipe 3421, the bottom end of the supporting rib 343 is fixedly connected with the middle part of the upper surface of the contact piece 31, and the two side ribs 344 are respectively located on the two sides of the supporting rib 343, and the top ends of the two side ribs 344 are respectively fixedly connected with the two sides of the reinforcing pipe 3421. This arrangement improves the firmness of the connection between the reinforcing pipe 3421 and the contact piece 31.

[0021] Work flow: before use, the cold liquid conveying piece 37 is embedded in the contact cavity 13, the second conveying pipe 36 is embedded in the second connecting cavity 12, the first conveying pipe 35 is embedded in the first connecting cavity 11, the contact piece 31 of the double-mold core assembly 3 is embedded in the rear end of the shunt bridge, and the positioning pieces 32 at both ends of the contact piece 31 are embedded in the end part of the first connecting cavity 11. During installation, the extrusion piece 331 in the limiting piece 33 rotates around the connecting shaft, and under the elastic support of the supporting spring 333, the limiting claw 332 is embedded and fixed on both sides of the end part of the mold body 1, and the contact groove 334 is in contact with the end part of the mold body 1 for positioning, thereby completing the stable installation of the double-mold core assembly 3 on the mold body 1. The cooling liquid is injected into the inside of the cooling liquid delivery box 371 through the one-way liquid inlet nozzle 374 of the cooling liquid delivery member 37. Due to the isolation effect of the isolation block 373, the cooling liquid directly flows into the first delivery pipe 35 on the corresponding side through the inside of the cooling liquid delivery box 371, and then flows into the inside of the reinforcing member 342. Since the top of the reinforcing pipe 3421 is embedded in the inside of the mold core body 341, and the bottom is embedded in the inside of the positioning member 32, and the inside delivery cavity 3422 is in communication with the end of the first delivery pipe 35, the cooling liquid can cover the connection part of the mold core member 34 and the contact member 31 and the positioning member 32, so as to realize the pre-cooling of the key parts of the mold core; During the hot extrusion of the aluminum profile, the contact member 31 of the double-mold core assembly 3 directly contacts the aluminum profile and bears the heat generated by high-speed friction. At this time, the cooling liquid in the inside of the reinforcing member 342 continuously flows, and the triangular support structure formed by the support ribs 343 and the side ribs 344 enhances the structural strength of the mold core body 341, preventing it from deforming due to thermal expansion and contraction and extrusion stress. At the same time, the ratchet rod 3424 and the ratchet teeth 3425 at the top bending part of the delivery cavity 3422 pierce the bubbles in the cooling liquid, ensuring smooth delivery of the cooling liquid and continuously cooling the mold core body 341 and the contact member 31; For the problem of heat accumulation on the opposite side of the double-mold core assembly 3, the heat-conducting protrusions 372 on the lower surface of the cooling liquid delivery member 37 enhance the heat exchange in the contact cavity 13 area. After circulating through the first delivery pipe 35 and the second delivery pipe 36, the cooling liquid flows into the other side of the cooling liquid delivery box 371 and is discharged through the one-way liquid outlet nozzle 375, continuously taking away the heat inside the mold body 1 and avoiding the formation of a heat accumulation area on the opposite side of the mold core. After extrusion is completed, the injection of cooling liquid is stopped, and the residual cooling liquid is completely discharged through the one-way liquid outlet nozzle 375. If it is necessary to maintain or replace the double-mold core assembly 3, only the extrusion member 331 of the limiting member 33 needs to be pressed to make the limiting claw 332 disengage from the end of the mold body 1, so that the double-mold core assembly 3 can be taken out of the mold body 1, which is convenient to operate.

[0022] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A deformation-resistant hot extrusion double-die core structure for aluminum profiles, comprising a die body (1), characterized in that, The mold body (1) has flow-dividing cavities (2) on both sides inside. A double mold core assembly (3) is installed inside the flow-dividing cavity (2) through a flow-dividing bridge. The double mold core assembly (3) is located on the back of the mold body (1). The back of the mold body (1) is provided with a first connecting cavity (11) and a second connecting cavity (12) on both sides, and a contact cavity (13) is provided in the middle of the back of the mold body (1); the double mold core assembly (3) includes a contact element (31), and a positioning element (32) is integrally formed at both ends of the contact element (31). The positioning element (32) is embedded in the end of the first connecting cavity (11). The outer walls of the positioning element (32) are elastically connected to the limiting element (33) through the mounting groove on both sides. A mold core element (34) is integrally formed above the contact element (31). A first conveying pipe (35) is embedded in the inner side of the first connecting cavity (11), a second conveying pipe (36) is embedded in the inner side of the second connecting cavity (12), and a cold liquid conveying element (37) is embedded in the inner side of the contact cavity (13). The mold core component (34) includes a mold core body (341), and a reinforcing member (342), a supporting rib (343), and two side ribs (344) are embedded and fixed inside the mold core body (341).

2. The deformation-resistant aluminum profile hot extrusion double-die core structure according to claim 1, characterized in that: The limiting member (33) includes an extrusion member (331). The bottom of the extrusion member (331) is hinged to the bottom of the mounting groove of the positioning member (32) via a connecting shaft. A limiting claw (332) is integrally formed in the middle of the outer side of the extrusion member (331). A support spring (333) is fixed on the back of the extrusion member (331). One end of the support spring (333) is fixedly connected to the top of the mounting groove of the positioning member (32).

3. The deformation-resistant aluminum profile hot extrusion double-die core structure according to claim 1, characterized in that: The reinforcing member (342) includes a reinforcing tube (3421), and conveying cavities (3422) are provided on both sides inside the reinforcing tube (3421). A reinforcing rib (3423) is embedded and fixed in the middle of the reinforcing tube (3421). A ratchet (3424) is fixed at the bend at the top of the conveying cavity (3422). The outer wall of the ratchet (3424) is fixed with ratchet teeth (3425) arranged in an arc.

4. The deformation-resistant aluminum profile hot extrusion double-die core structure according to claim 1, characterized in that: The cold liquid conveying component (37) includes a cold liquid conveying box (371), a plurality of heat-conducting protrusions (372) are integrally formed on the lower surface of the cold liquid conveying box (371), a partition block (373) is integrally formed in the middle of the inner side of the cold liquid conveying box (371), a one-way liquid inlet (374) is installed on one side of the upper surface of the cold liquid conveying box (371), and a one-way liquid outlet (375) is installed on the other side of the upper surface of the cold liquid conveying box (371).

5. The deformation-resistant aluminum profile hot extrusion double-die core structure according to claim 1, characterized in that: The first connecting cavity (11), the second connecting cavity (12) and the contact cavity (13) are interconnected. Both ends of the first connecting cavity (11) are dovetail structures, and the end of the first connecting cavity (11) is connected to the inner side of the diversion cavity (2).

6. The deformation-resistant aluminum profile hot extrusion double-die core structure according to claim 1, characterized in that: The top end of the support rib (343) is fixedly connected to the center of the top of the reinforcing tube (3421), the bottom end of the support rib (343) is fixedly connected to the middle of the upper surface of the contact member (31), the two side ribs (344) are located on both sides of the support rib (343), and the top ends of the two side ribs (344) are fixedly connected to both sides of the reinforcing tube (3421).

7. The deformation-resistant aluminum profile hot extrusion double-die core structure according to claim 2, characterized in that: The extrusion piece (331) has an inclined structure. The thickness of the extrusion piece (331) is the same as the thickness of the limiting claw (332). The limiting claw (332) is embedded and fixed on both sides of the end of the mold body (1). The top of the extrusion piece (331) is provided with a contact groove (334).

8. The deformation-resistant aluminum profile hot extrusion double-die core structure according to claim 3, characterized in that: The top of the reinforcing tube (3421) has a diamond-shaped structure, and the top of the reinforcing tube (3421) is embedded and fixed inside the core body (341). The bottom of the reinforcing tube (3421) has a horizontal structure, and the bottom of the reinforcing tube (3421) is embedded and fixed inside the positioning member (32). The interior of the reinforcing tube (3421) is connected to the end of the first conveying tube (35).

9. The deformation-resistant aluminum profile hot extrusion double-die core structure according to claim 3, characterized in that: The vertical cross-sectional shape of the reinforcing rib (3423) is an isosceles trapezoid, and the length of the reinforcing rib (3423) is the same as the length of the reinforcing tube (3421).

10. A method of using a deformation-resistant aluminum profile hot-extruded double-core structure according to any one of claims 1-9, characterized in that: Step 1: Before use, the cold liquid conveying component (37) is embedded in the contact cavity (13), the second conveying pipe (36) is embedded in the second connecting cavity (12), the first conveying pipe (35) is embedded in the first connecting cavity (11), the contact component (31) of the double mold core assembly (3) is embedded in the rear end of the diversion bridge, and the positioning components (32) at both ends of the contact component (31) are embedded in the end of the first connecting cavity (11). During installation, the squeezing component (331) in the limiting component (33) rotates around the connecting shaft. Under the elastic support of the supporting spring (333), the limiting claw (332) is embedded and fixed on both sides of the end of the mold body (1), and the contact groove (334) contacts and positions the end of the mold body (1), thus completing the stable installation of the double mold core assembly (3) on the mold body (1). Step 2: Coolant is injected into the coolant delivery box (371) through the one-way inlet (374) of the coolant delivery component (37). Due to the isolation effect of the partition (373), the coolant flows directly into the first delivery pipe (35) on the corresponding side through one side of the coolant delivery box (371), and then into the connected reinforcing member (342). Since the top of the reinforcing pipe (3421) is embedded in the mold core body (341) and the bottom is embedded in the positioning member (32), and the internal delivery cavity (3422) is connected to the end of the first delivery pipe (35), the coolant can cover the connection part of the mold core component (34) and the contact member (31) and the positioning member (32), so as to achieve pre-cooling of the key parts of the mold core. Step 3: During the hot extrusion of aluminum profiles, the contact part (31) of the dual core assembly (3) is in direct contact with the aluminum profile and bears the heat generated by high-speed friction. At this time, the coolant inside the reinforcing part (342) continues to flow. The triangular support structure formed by the support rib (343) and the side rib (344) enhances the structural strength of the core body (341) and prevents it from deforming due to thermal expansion and contraction and extrusion stress. At the same time, the ratchet (3424) and ratchet (3425) at the top bend of the conveying cavity (3422) puncture the air bubbles in the coolant and continuously cool the core body (341) and the contact part (31). Step 4: After the extrusion is completed, stop injecting coolant. The remaining coolant is completely discharged through the one-way outlet (375). If the dual mold core assembly (3) needs to be maintained or replaced, simply press the extrusion part (331) of the limiting part (33) to make the limiting claw (332) disengage from the end of the mold body (1) and the dual mold core assembly (3) can be taken out from the mold body (1).

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