Double-layer split type air-cooled radiator aluminum profile extrusion die and extrusion process

Abstract

The invention belongs to the technical field of extrusion dies, and particularly relates to a double-layer split type air-cooled radiator aluminum profile extrusion die and an extrusion technology.The double-layer split type air-cooled radiator aluminum profile extrusion die comprises an upper die body, a lower die body is fixedly connected to the lower portion of the upper die body, a die hole is formed in the lower die body, a discharging hole is formed in the die body, and a supporting block is fixedly installed on the lower die body; a sliding groove is fixedly formed in the supporting block, a driving assembly is arranged in the sliding groove, and strip-shaped frames are symmetrically arranged in the supporting block. According to the double-layer split type air-cooled radiator aluminum profile extrusion die and the extrusion process, through the double-layer integrated extrusion die technology and double-layer split type overall extrusion, a radiator with the thick wall can be discharged at a time, local point line positions are split through die structure stress concentration, and double-layer profiles are split; finally, the two-piece structure is subjected to friction welding to form the radiator section of an integrated structure, stable mass production of products through extrusion is achieved, and the cost is greatly reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of extrusion dies, in particular to an extrusion die and an extrusion process for a double-layer split air-cooled radiator aluminum profile. Background Art

[0002] Aluminum alloy air-cooled radiators are a type of radiator currently widely used in the fields of automobiles, electronic equipment, energy storage boxes, etc., and are characterized by being lightweight. Due to the lightweight characteristics of aluminum alloy materials, aluminum alloy radiators are lighter than traditional copper radiators, which can reduce the overall weight of vehicles or equipment. They have high heat dissipation efficiency: aluminum alloy radiators have excellent heat dissipation performance and have higher heat dissipation efficiency than traditional copper radiators, and can dissipate heat more quickly. Simple manufacturing process: The manufacturing process of aluminum alloy radiators is relatively simple, and the production cost is low, so large quantities of products can be produced more cheaply. Aluminum alloy radiators have excellent antioxidant and anti-corrosion properties, and are not prone to rust or oxidation after long-term use. A Chinese patent with publication number CN108144977A discloses an aluminum profile extrusion die, including a guide plate and a die body, the guide plate is fixedly connected to the die body, a plurality of guide holes are provided at the upper end of the guide plate, a welding chamber connected to the guide holes is provided at the lower end of the guide plate, a material guide port is provided at the upper end of the die body, a working belt connected to the material guide port is provided at the lower end of the die body, the shape of the material guide port is consistent with the shape of the discharge port of the welding chamber, and a plurality of protrusions and grooves connected end to end are provided at the working belt of the die body; in order to solve the problem in the prior art that the product has swing teeth, deformation or fracture due to uneven heat dissipation in each working area of ​​the die working belt cavity, the device provides an aluminum profile extrusion die, which has good heat dissipation performance, produces products of high quality and has a long service life.

[0003] Currently, most of the liquid-cooled extruded profile flow channel radiators on the market use a large amount of aluminum and have high material costs. For wide and ultra-thin air-cooled radiator profiles, there are many problems such as technical bottlenecks and barriers in the preparation of the extrusion process, which make it impossible to carry out large-scale industrial production and implementation.

[0004] To this end, the present invention provides a double-layer split air-cooled radiator aluminum profile extrusion die and extrusion process. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the present invention proposes a double-layer split air-cooled radiator aluminum profile extrusion die and extrusion process.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a double-layer split air-cooled radiator aluminum profile extrusion die according to the present invention comprises an upper die, a lower die is fixedly connected below the upper die, a diverter hole is arranged on the upper die, an upper die tongue core is arranged inside the upper die, a die hole is arranged inside the lower die, a discharge hole is arranged on the die, and the discharge hole is located on one side of the die hole, a support block is fixedly installed on the lower die, a sliding groove is fixedly installed inside the support block, a driving assembly is arranged inside the sliding groove, a strip frame is symmetrically arranged inside the support block, and the sliding groove is located on one side of the strip frame, a guide assembly is arranged inside the strip frame, the driving assembly is connected with a support plate, a drive plate is fixedly installed on the support plate, one end of the drive plate is fixedly connected with a load-bearing plate, a square frame is symmetrically installed on the load-bearing plate, a frame is fixedly installed on the square frame, and the frame is connected with the square frame, a limiting hole is arranged inside the frame, a support shaft is penetrated inside the limiting hole, and a support cylinder is fixedly connected to one end of the support shaft.

[0007] Preferably, the driving assembly includes a driving motor, a threaded rod, a connecting block and a threaded ring, the driving motor is fixedly mounted on the supporting block, the threaded rod is arranged inside the sliding groove, and one end of the threaded rod is fixedly connected to the output end of the driving motor, the connecting block is arranged inside the sliding groove, and the connecting block is fixedly connected to the supporting plate, the threaded ring is fixedly mounted inside the connecting block, and the threaded rod is threadedly connected to the threaded ring.

[0008] Preferably, the guide assembly comprises a guide plate and a guide block, the guide plate is fixedly mounted inside the strip frame, the guide block is fixedly mounted on the support plate, and the guide plate passes through the guide block.

[0009] Preferably, a pulley is arranged above the support shaft, a support frame is fixedly installed inside the square frame, a driving wheel is fixedly installed inside the support frame, a No. 1 belt is arranged on the pulley, and the pulley and the driving wheel are connected through the No. 1 belt transmission.

[0010] Preferably, a No. 2 belt is provided on the driving wheel, and a fan is fixedly installed inside the square frame.

[0011] Preferably, an impeller is provided inside the fan, the impeller is fixedly connected to a driven wheel, and the driven wheel is connected to the driving wheel through a second belt drive.

[0012] Preferably, a conveying pipe is fixedly mounted on the fan, and air vents are arranged in an array on the square frame, and filters are arranged inside the air vents.

[0013] Preferably, a flow groove is embedded in the load-bearing plate, and the delivery pipe is connected to the flow groove.

[0014] Preferably, an array of exhaust holes is provided on the flow trough, and a filter is provided inside the exhaust holes.

[0015] An extrusion process for a double-layer split air-cooled radiator aluminum profile, comprising: S1. Extrusion die structure design double-layer discharge structure, select 6300T extruder, extrusion barrel 390mm, if a single-layer structure is used, the extrusion ratio (λ=extrusion barrel cross-sectional area / extrusion cross-sectional area) is too large, resulting in excessive pressure on the extrusion die and failure to discharge normally. The innovative method is to use a double-layer split extrusion profile structure, directly reducing the material extrusion ratio λ by half, greatly improving the extrudability of the profile structure; S2. Structural layout design of combined extrusion die; the empty knife at the T-cavity position of the cavity between the tongue core of the die is reduced, the transition is smooth, and the uneven deformation during the extrusion process is reduced. The alloy extrusion ratio is between 15-30. The die must be designed and adjusted on the basis of the original die: a. Try to sink the bridge, the bridge bottom width ≤3 mm, b. The step difference between the male head working belt and the lower die working belt ≤1.0, c. Do not leave a flow-blocking bag, d. The working belt between the two male heads at the inner rib is as short as possible, and the drainage groove transition is smooth, as large and smooth as possible, e. The lower die working belt is as short as possible, f. No dead zone is left at any place (the rear empty knife does not exceed 2 mm), g. The inlet end is sunken, and then the flow supply at the oblique rib is increased: if the working belt is shortened, pay attention to the working belts at both ends of the oblique rib should be shorter than the middle, expand the back hole, etc.; S3. The split-type stress concentration mold structure design is applied to ensure the strength of the mold cantilever and avoid the breakage of the eccentric arm and scrapping during the extrusion production process. When placing the mold hole, the maximum plane is facing downward to contact the cooling bed to maintain the stability of the profile discharge; when determining the size of each diversion hole, the diversion ratio between each diversion hole is determined by calculating. A 2MM wide * 5MM long overlap table is designed at the intersection of the upper and lower molds. It is finely manufactured and processed to minimize the overlap flash generated during the production of the profile. The lower mold adopts a secondary welding chamber design to ensure the uniformity of the metal flow rate of each mold hole and facilitate mold repair. The shape of the welding chamber is designed to be consistent with the shape of the upper mold diversion hole, reducing the existence of metal dead zone and the determination of the upper and lower mold working belts. The upper mold tongue core is elastically deformed radially from the inside to the outside based on the center of the extrusion cylinder. According to the material properties provided by different mold steel manufacturers, the pre-bias of the upper mold tongue core is determined to be 0.05MM.

[0016] The beneficial effects of the present invention are as follows: 1. The double-layer split air-cooled radiator aluminum profile extrusion die and extrusion process described in the present invention, through the double-layer integrated extrusion die technology and double-layer split overall extrusion, can discharge a radiator with a main wall thickness of 790mm*2.5mm at one time, and split the double-layer profile by splitting local points and lines through the stress concentration of the mold structure, and finally realize the radiator cross-section with two-piece structure friction welding into an integrated structure, thereby realizing stable mass production of product extrusion, greatly improving extrusion efficiency, and significantly reducing costs.

[0017] 2. The double-layer split air-cooled radiator aluminum profile extrusion die and extrusion process described in the present invention, through the setting of the support tube, when the extruded air-cooled radiator aluminum profile is discharged, the driving motor will drive the threaded rod to rotate, and the threaded rod will rotate to move the threaded ring, and the movement of the threaded ring will drive the connecting block to move, and then drive the support plate to move, and when the support plate moves, it will push the load-bearing plate to move through the driving plate, and the movement of the load-bearing plate will adjust the position of the support tube through the cooperation of the square frame and the frame, and then the support tube will contact with the discharged air-cooled radiator aluminum profile, and then support the air-cooled radiator aluminum profile, so as to achieve the purpose of supporting the discharged air-cooled radiator aluminum profile and avoid deformation of the profile.

[0018] 3. The double-layer split air-cooled radiator aluminum profile extrusion die and extrusion process described in the present invention, through the fan and exhaust hole, when the air-cooled radiator aluminum profile contacts and moves with the support tube, the air-cooled radiator aluminum profile will make the support tube move, and then drive the support shaft to rotate, and the rotation of the support shaft will drive the pulley to rotate, and the rotation of the pulley will drive the driving wheel to move through the No. 1 belt, and the movement of the driving wheel will drive the No. 2 belt to move, and the movement of the No. 2 belt will drive the driven wheel to rotate, and the rotation of the driven wheel will drive the impeller inside the fan to move, and then compress the air to make the air flow, and the air flow will enter the conveying pipe, and through the conveying The pipe will allow wind flow to enter the flow groove, and the air will flow to the outside through the exhaust hole. The air will flow to the surface of the air-cooled radiator aluminum profile, and then quickly cool the air-cooled radiator aluminum profile. Rapid cooling helps to form a dense oxide layer on the surface of the aluminum profile, thereby improving its corrosion resistance and extending its service life. Since the aluminum profile is formed at high temperature, rapid cooling can reduce the shape deformation and internal stress caused by uneven cooling, and can significantly shorten the cooling time of the aluminum profile, thereby improving production efficiency, increasing production capacity, helping to maintain the surface quality of the aluminum profile, and reducing cracks or defects in the cooling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a three-dimensional diagram of the aluminum profile extrusion die of the double-layer split air-cooled radiator of the present invention; Figure 2 It is a structural schematic diagram of the lower mold in the present invention; Figure 3 It is a schematic diagram of the structure of the die hole in the present invention; Figure 4 It is a schematic diagram of the structure of the discharge hole in the present invention; Figure 5 It is a structural schematic diagram of the lower mold in the present invention; Figure 6 It is a structural schematic diagram of the support block in the present invention; Figure 7 It is a structural schematic diagram of the driving plate in the present invention; Figure 8 It is a schematic diagram of the structure of the flow tank in the present invention; Fig. 9 It is a structural schematic diagram of the square frame in the present invention; Fig.10 It is a structural schematic diagram of the framework in the present invention; Fig.11 It is a structural schematic diagram of the support tube in the present invention; Fig.12 It is a structural schematic diagram of the square frame in the present invention.

[0021] In the figure: 1. upper mold; 2. diverter hole; 3. tongue core of upper mold; 4. lower mold; 5. discharge hole; 6. mold hole; 7. support block; 8. drive motor; 9. sliding groove; 10. threaded rod; 11. connecting block; 12. threaded ring; 13. support plate; 14. strip frame; 15. guide plate; 16. guide block; 17. drive plate; 18. load-bearing plate; 19. square frame; 20. frame; 21. limit hole; 22. vent hole; 23. support shaft; 24. support cylinder; 25. pulley; 26. support frame; 27. drive wheel; 28. No. 1 belt; 29. ​​No. 2 belt; 30. fan; 31. impeller; 32. driven wheel; 33. conveying pipe; 34. flow groove; 35. exhaust hole. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0023] like Figures 1 to 11As shown, a double-layer split air-cooled radiator aluminum profile extrusion die according to an embodiment of the present invention comprises an upper die 1, a lower die 4 is fixedly connected to the lower portion of the upper die 1, a diverter hole 2 is arranged on the upper die 1, an upper die tongue core 3 is arranged inside the upper die 1, a die hole 6 is arranged inside the lower die 4, a discharge hole 5 is arranged on the lower die 4, and the discharge hole 5 is located on one side of the die hole 6, a support block 7 is fixedly installed on the lower die 4, a sliding groove 9 is fixedly installed inside the support block 7, a driving component is arranged inside the sliding groove 9, a strip frame 14 is symmetrically arranged inside the support block 7, and the sliding groove 9 is located on one side of the strip frame 14, and a strip frame 14 is arranged inside The guide assembly and the driving assembly are connected with a support plate 13, a driving plate 17 is fixedly installed on the support plate 13, one end of the driving plate 17 is fixedly connected with a load-bearing plate 18, a square frame 19 is symmetrically installed on the load-bearing plate 18, a frame 20 is fixedly installed on the square frame 19, and the frame 20 is connected with the square frame 19, a limited hole 21 is arranged inside the frame 20, a support shaft 23 is penetrated inside the limited hole 21, and a support cylinder 24 is fixedly connected at one end of the support shaft 23. When the double-layer split air-cooled radiator aluminum profile extrusion die is used to extrude the air-cooled radiator aluminum profile, the upper die 1 and the lower die 4 are fastened and connected, and the two are installed at the aluminum profile extrusion place , select 6300T extruder and extrusion barrel 390mm, place the heated aluminum rod inside the extrusion barrel through the industrial robot, and then push the aluminum rod through the extruder to move it to the location of the diverter hole 2 and the upper die tongue core 3, and then enter the upper die 1. Design a 2MM wide * 5MM long overlap table at the junction of the upper and lower dies, and make it finely processed to minimize the overlap flash generated during profile production. The lower die 4 adopts a secondary welding chamber design to ensure the uniformity of the metal flow rate of each die hole 6 and facilitate mold repair. The shape of the welding chamber is designed to be consistent with the shape of the diverter hole 2 of the upper die 1, reducing the metal dead zone. The existence of the die hole 6 makes the air-cooled radiator aluminum profile extruded and formed, and the discharge hole 5 makes the extruded air-cooled radiator aluminum profile move to the outside, thereby achieving the reduction of the extrusion ratio to ensure the ultra-wide extrusion range. The extrusion of the ultra-thin wall radiator can ensure that the bottom surface gap is within 0.8mm, and the overall extrusion accuracy requirement is improved by one level, which can adapt to the wall thickness of the thinned extruded profile. On the basis of the existing 2.5mm, the existing extrusion ratio can be adjusted and optimized to 2.4mm, which reduces the number of friction seams, greatly improves the efficiency of friction welding and the deformation of the friction welding gap, and the performance of the welded product is greatly improved by 2.04 times, compared with the experimental parameters of existing products (extrusion unit material discharge efficiency, extrusion gap and splicing weld strength), the comprehensive cost is reduced by 30%, the strength, efficiency and equipment investment quantity are greatly improved, and the industrial application of mass production is realized. When the extruded air-cooled radiator aluminum profile is discharged, the driving component moves to adjust the position of the support plate 13. When the support plate 13 moves, the driving plate 17 will push the load-bearing plate 18 to move. The load-bearing plate 18 moves through the cooperation of the square frame 19 and the frame 20 to adjust the position of the support cylinder 24, which will make the support cylinder 24 contact with the discharged air-cooled radiator aluminum profile, and then support the air-cooled radiator aluminum profile, so as to achieve the purpose of supporting the discharged air-cooled radiator aluminum profile, avoid deformation of the profile, and improve the practicality of the air-cooled radiator aluminum profile. .

[0024] like Figure 6 and Figure 7 As shown, the driving assembly includes a driving motor 8, a threaded rod 10, a connecting block 11 and a threaded ring 12. The driving motor 8 is fixedly mounted on the supporting block 7. The threaded rod 10 is arranged inside the sliding groove 9, and one end of the threaded rod 10 is fixedly connected to the output end of the driving motor 8. The connecting block 11 is arranged inside the sliding groove 9, and the connecting block 11 is fixedly connected to the supporting plate 13. The threaded ring 12 is fixedly mounted inside the connecting block 11, and the threaded rod 10 is threadedly connected to the threaded ring 12. When the driving assembly moves, the driving motor 8 works to drive the threaded rod 10 to rotate, and the threaded rod 10 rotates to move the threaded ring 12. The movement of the threaded ring 12 drives the connecting block 11 to move, and then drives the supporting plate 13 to move.

[0025] like Figure 6 and Figure 7 As shown, the guide assembly includes a guide plate 15 and a guide block 16. The guide plate 15 is fixedly installed inside the strip frame 14, and the guide block 16 is fixedly installed on the support plate 13. The guide plate 15 passes through the guide block 16. When the support plate 13 moves, it will drive the guide block 16 to move. When the guide block 16 moves, the support plate 13 will be guided by the cooperation of the guide plate 15, so that the support plate 13 moves smoothly.

[0026] like Fig.12As shown, a pulley 25 is arranged above the support shaft 23, a support frame 26 is fixedly installed inside the square frame 19, a driving wheel 27 is fixedly installed inside the support frame 26, a No. 1 belt 28 is arranged on the pulley 25, and the pulley 25 and the driving wheel 27 are connected by the No. 1 belt 28, a No. 2 belt 29 is arranged on the driving wheel 27, a fan 30 is fixedly installed inside the square frame 19, an impeller 31 is arranged inside the fan 30, the impeller 31 is fixedly connected to the driven wheel 32, and the driven wheel 32 and the driving wheel 27 are connected by the No. 2 belt 29, and the heat dissipation is air-cooled. When the aluminum profile of the air-cooled radiator contacts and moves with the support tube 24, the aluminum profile of the air-cooled radiator will cause the support tube 24 to rotate, and then drive the support shaft 23 to rotate. When the support shaft 23 rotates, it will drive the pulley 25 to rotate. When the pulley 25 rotates, it will drive the driving wheel 27 to move through the No. 1 belt 28. When the driving wheel 27 moves, it will drive the No. 2 belt 29 to move. The movement of the No. 2 belt 29 will drive the driven wheel 32 to rotate. When the driven wheel 32 rotates, it will drive the impeller 31 inside the fan 30 to move, thereby compressing the air and causing the air to flow. The air flow will enter the delivery pipe 33.

[0027] like Fig.12 As shown, a delivery pipe 33 is fixedly installed on the fan 30, and an array of air vents 22 are arranged on the square frame 19, and a filter is arranged inside the air vents 22. Wind flow is delivered through the delivery pipe 33, and external air flows into the square frame 19 through the air vents 22. The filter inside the air vents 22 can filter impurities carried by the air.

[0028] like Figure 8 As shown, a flow groove 34 is embedded inside the load-bearing plate 18, and the delivery pipe 33 is connected to the flow groove 34. An array of exhaust holes 35 are arranged on the flow groove 34, and a filter is arranged inside the exhaust hole 35. Wind flow will enter the flow groove 34 through the delivery pipe 33, and air will flow to the outside through the exhaust hole 35. The air will flow to the surface of the air-cooled radiator aluminum profile, and then the air-cooled radiator aluminum profile will be quickly cooled down. Rapid cooling can help form a dense oxide layer on the surface of the aluminum profile, thereby improving its corrosion resistance and extending its service life. Since the aluminum profile is formed at high temperature, rapid cooling can reduce shape deformation and internal stress caused by uneven cooling, and can significantly shorten the cooling time of the aluminum profile, thereby improving production efficiency, increasing production capacity, helping to maintain the surface quality of the aluminum profile, and reducing cracks or defects in the cooling process.

[0029] An extrusion process for a double-layer split air-cooled radiator aluminum profile, comprising: S1. Extrusion die structure design double-layer discharge structure, select 6300T extruder, extrusion barrel 390mm, if a single-layer structure is used, the extrusion ratio λ=extrusion barrel cross-sectional area / extrusion cross-sectional area is too large, resulting in excessive pressure on the extrusion die and failure to discharge normally. The innovative method is to use a double-layer split extrusion profile structure, directly reducing the material extrusion ratio λ by half, greatly improving the extrudability of the profile structure; S2. Structural layout design of combined extrusion die; the empty knife at the T-cavity position of the cavity between the tongue core of the die is reduced, the transition is smooth, and the uneven deformation during the extrusion process is reduced. The alloy extrusion ratio is between 15-30. The die must be designed and adjusted on the basis of the original die: a. Try to sink the bridge, the bridge bottom width ≤3 mm, b. The step difference between the male head working belt and the lower die working belt ≤1.0, c. Do not leave a flow-blocking bag, d. The working belt between the two male heads at the inner rib is as short as possible, and the drainage groove transition is smooth, as large and smooth as possible, e. The lower die working belt is as short as possible, f. No dead zone is left at any place (the rear empty knife does not exceed 2 mm), g. The inlet end is sunken, and then the flow supply at the oblique rib is increased: if the working belt is shortened, pay attention to the working belts at both ends of the oblique rib should be shorter than the middle, expand the back hole, etc.; S3. The split-type stress concentration mold structure design is applied to ensure the strength of the mold cantilever and avoid the breakage of the eccentric arm and scrapping during the extrusion production process. When placing the mold hole, the maximum plane is facing downward to contact the cooling bed to maintain the stability of the profile discharge; when determining the size of each diversion hole, the diversion ratio between each diversion hole is determined by calculating. A 2MM wide * 5MM long overlap table is designed at the intersection of the upper and lower molds. It is finely manufactured and processed to minimize the overlap flash generated during the production of the profile. The lower mold adopts a secondary welding chamber design to ensure the uniformity of the metal flow rate of each mold hole 6 and facilitate mold repair. The shape of the welding chamber is designed to be consistent with the shape of the upper mold diversion hole, reducing the existence of metal dead zone and the determination of the upper and lower mold working belts. The upper mold tongue core is elastically deformed radially from the inside to the outside based on the center of the extrusion cylinder. According to the material properties provided by different mold steel manufacturers, the pre-bias of the upper mold tongue core is determined to be 0.05MM.

[0030] Working principle: First, when using a double-layer split air-cooled radiator aluminum extrusion die to extrude the air-cooled radiator aluminum profile, after the upper die 1 and the lower die 4 are tightly connected, they are installed at the aluminum profile extrusion site. A 6300T extruder and an extrusion barrel 390mm are selected. After the heated aluminum rod is placed inside the extrusion barrel by an industrial robot, the aluminum rod is pushed by the extruder to move it so that the aluminum rod enters the location of the diverter hole 2 and the upper die tongue core 3, and then enters the upper die 1. A 2MM wide * 5MM long overlap table is designed at the junction of the upper and lower dies. It is finely manufactured and processed to minimize the overlap flash generated during profile production. The lower die 4 adopts a secondary welding chamber design to ensure the uniformity of the metal flow rate of each die hole 6, and It is convenient to repair the mold. The shape of the welding chamber is designed to be consistent with the shape of the diversion hole 2 of the upper mold 1, which reduces the existence of the metal dead zone. The air-cooled radiator aluminum profile is extruded through the mold hole 6, and the extruded air-cooled radiator aluminum profile is moved to the outside through the discharge hole 5, thereby achieving the reduction of the extrusion ratio to ensure the ultra-wide extrusion range. The extrusion molding discharge of the ultra-thin wall radiator can ensure that the bottom surface gap is within 0.8mm. The overall extrusion accuracy requirement is improved by one level, which can adapt to the wall thickness of the thinned extruded profile. On the basis of the existing 2.5mm, the existing extrusion ratio can be adjusted and optimized to 2.4mm, reducing the number of friction seams, greatly improving the efficiency of friction welding and the deformation of the friction welding gap, and the performance of the welded product is greatly improved by 2.04 times, compared with the experimental parameters of existing products (extrusion unit material discharge efficiency, extrusion gap and splicing weld strength), the comprehensive cost is reduced by 30%, the strength and efficiency and the number of equipment investment are greatly improved, and the industrial application of mass production is realized. When the extruded air-cooled radiator aluminum profile is discharged, the drive motor 8 is driven to rotate the threaded rod 10, and the threaded rod 10 rotates to move the threaded ring 12, and the movement of the threaded ring 12 drives the connection block 11 to move, and then drives the support plate 13 to move, and the support plate 13 moves through The driving plate 17 will push the load-bearing plate 18 to move. The movement of the load-bearing plate 18 will adjust the position of the support tube 24 through the cooperation of the square frame 19 and the frame 20, so that the support tube 24 will contact with the discharged air-cooled radiator aluminum profile, and then support the air-cooled radiator aluminum profile to achieve the purpose of supporting the discharged air-cooled radiator aluminum profile and avoid deformation of the profile. When the air-cooled radiator aluminum profile contacts and moves with the support tube 24, the air-cooled radiator aluminum profile will cause the support tube 24 to rotate, and then drive the support shaft 23 to rotate. The support shaft 23 When the belt pulley 25 rotates, it drives the driving wheel 27 to move through the No. 1 belt 28. When the driving wheel 27 moves, it drives the No. 2 belt 29 to move. The No. 2 belt 29 drives the driven wheel 32 to rotate. When the driven wheel 32 rotates, it drives the impeller 31 inside the fan 30 to move, thereby compressing the air and causing the air to flow. The air flows into the delivery pipe 33, and the wind flows into the flow slot 34 through the delivery pipe 33. The air flows to the outside through the exhaust hole 35. The air will flow to the surface of the aluminum profile of the air-cooled radiator, and then quickly cool the aluminum profile. Rapid cooling helps to form a dense oxide layer on the surface of the aluminum profile, thereby improving its corrosion resistance and extending its service life. Since the aluminum profile is formed at high temperature, rapid cooling can reduce the shape deformation and internal stress caused by uneven cooling, and can significantly shorten the cooling time of the aluminum profile, thereby improving production efficiency and increasing production capacity, helping to maintain the surface quality of the aluminum profile and reducing cracks or defects during the cooling process.

[0031] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A double-layer split air-cooled radiator aluminum profile extrusion die, characterized by: The invention comprises an upper mold (1), wherein a lower mold (4) is fixedly connected to the lower part of the upper mold (1), a diversion hole (2) is arranged on the upper mold (1), an upper mold tongue core (3) is arranged inside the upper mold (1), a mold hole (6) is arranged inside the lower mold (4), a discharge hole (5) is arranged on the lower mold (4), and the discharge hole (5) is located on one side of the mold hole (6), a support block (7) is fixedly installed on the lower mold (4), a sliding groove (9) is fixedly installed inside the support block (7), a driving component is arranged inside the sliding groove (9), and a strip frame (14) is symmetrically arranged inside the support block (7), and the sliding groove (9) is located on the strip frame (14). A guide assembly is arranged inside the strip frame (14), the driving assembly is connected to a support plate (13), a driving plate (17) is fixedly mounted on the support plate (13), one end of the driving plate (17) is fixedly connected to a load-bearing plate (18), a square frame (19) is symmetrically mounted on the load-bearing plate (18), a frame (20) is fixedly mounted on the square frame (19), and the frame (20) is connected to the square frame (19), a limiting hole (21) is arranged inside the frame (20), a support shaft (23) is passed through the limiting hole (21), and one end of the support shaft (23) is fixedly connected to a support cylinder (24).

2. The double-layer split air-cooled radiator aluminum profile extrusion die according to claim 1 is characterized in that: The drive assembly comprises a drive motor (8), a threaded rod (10), a connecting block (11) and a threaded ring (12); the drive motor (8) is fixedly mounted on the support block (7); the threaded rod (10) is arranged inside the sliding groove (9), and one end of the threaded rod (10) is fixedly connected to the output end of the drive motor (8); the connecting block (11) is arranged inside the sliding groove (9), and the connecting block (11) is fixedly connected to the support plate (13); the threaded ring (12) is fixedly mounted inside the connecting block (11), and the threaded rod (10) and the threaded ring (12) are threadedly connected.

3. The double-layer split air-cooled radiator aluminum profile extrusion die according to claim 2 is characterized in that: The guide assembly comprises a guide plate (15) and a guide block (16); the guide plate (15) is fixedly mounted inside the strip frame (14); the guide block (16) is fixedly mounted on the support plate (13); and the guide plate (15) passes through the guide block (16).

4. The double-layer split air-cooled radiator aluminum profile extrusion die according to claim 3 is characterized by: A pulley (25) is arranged above the support shaft (23), a support frame (26) is fixedly installed inside the square frame (19), a driving wheel (27) is fixedly installed inside the support frame (26), a first belt (28) is arranged on the pulley (25), and the pulley (25) and the driving wheel (27) are connected by transmission via the first belt (28).

5. The double-layer split air-cooled radiator aluminum profile extrusion die according to claim 4 is characterized in that: A second belt (29) is provided on the driving wheel (27), and a fan (30) is fixedly installed inside the square frame (19).

6. The double-layer split air-cooled radiator aluminum profile extrusion die according to claim 5, characterized in that: An impeller (31) is disposed inside the fan (30), and the impeller (31) is fixedly connected to a driven wheel (32), and the driven wheel (32) is connected to the driving wheel (27) through a second belt (29).

7. The double-layer split air-cooled radiator aluminum profile extrusion die according to claim 6, characterized in that: A delivery pipe (33) is fixedly mounted on the fan (30), and ventilation holes (22) are arranged in an array on the square frame (19), and a filter is arranged inside the ventilation holes (22).

8. The double-layer split air-cooled radiator aluminum profile extrusion die according to claim 7, characterized in that: A flow groove (34) is embedded in the load-bearing plate (18), and the delivery pipe (33) is in communication with the flow groove (34).

9. The double-layer split air-cooled radiator aluminum profile extrusion die according to claim 8, characterized in that: The flow tank (34) is provided with exhaust holes (35) in an array, and a filter is provided inside the exhaust holes (35).

10. An extrusion process for a double-layer split air-cooled radiator aluminum profile, suitable for a double-layer split air-cooled radiator aluminum profile extrusion die according to any one of claims 1 to 9, characterized in that: include: S1. Extrusion die structure design double-layer discharge structure, select 6300T extruder, extrusion barrel 390mm, if a single-layer structure is used, the extrusion ratio (λ=extrusion barrel cross-sectional area / extrusion cross-sectional area) is too large, resulting in excessive pressure on the extrusion die and failure to discharge normally. The innovative method is to use a double-layer split extrusion profile structure, directly reducing the material extrusion ratio λ by half, greatly improving the extrudability of the profile structure; S2. Structural layout design of combined extrusion die; the empty knife at the T-cavity position of the cavity between the tongue core of the die is reduced, the transition is smooth, and the uneven deformation during the extrusion process is reduced. The alloy extrusion ratio is between 15-30. The die must be designed and adjusted on the basis of the original die: a. Try to sink the bridge, the bridge bottom width ≤3 mm, b. The step difference between the male head working belt and the lower die working belt ≤1.0, c. Do not leave a flow-blocking bag, d. The working belt between the two male heads at the inner rib is as short as possible, and the drainage groove transition is smooth, as large and smooth as possible, e. The lower die working belt is as short as possible, f. No dead zone is left at any place (the rear empty knife does not exceed 2 mm), g. The inlet end is sunken, and then the flow supply at the oblique rib is increased: if the working belt is shortened, pay attention to the working belts at both ends of the oblique rib should be shorter than the middle, expand the back hole, etc.; S3. The split-type stress concentration mold structure design is applied to ensure the strength of the mold cantilever and avoid the breakage of the eccentric arm and scrapping during the extrusion production process. When placing the mold hole, the maximum plane is facing downward to contact the cooling bed to maintain the stability of the profile discharge; when determining the size of each diversion hole, the diversion ratio between each diversion hole is determined by calculating. A 2MM wide * 5MM long overlap table is designed at the intersection of the upper and lower molds. It is finely manufactured and processed to minimize the overlap flash generated during the production of the profile. The lower mold adopts a secondary welding chamber design to ensure the uniformity of the metal flow rate of each mold hole and facilitate mold repair. The shape of the welding chamber is designed to be consistent with the shape of the upper mold diversion hole, reducing the existence of metal dead zone and the determination of the upper and lower mold working belts. The upper mold tongue core is elastically deformed radially from the inside to the outside based on the center of the extrusion cylinder. According to the material properties provided by different mold steel manufacturers, the pre-bias of the upper mold tongue core is determined to be 0.05MM.

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