Extrusion die and quenching process method of high-multiplicity tooth radiator

Abstract

The application provides an extrusion die of a high-multiplying tooth radiator and a quenching process method thereof, and relates to the technical field of aluminum alloy processing. The extrusion die comprises an upper die and a lower die, the upper die is connected with the lower die, one end of the upper die away from the lower die is a feeding end, one end of the upper die close to the lower die is a discharging end, the discharging end is connected with the lower die, and at least two flow guide holes are arranged on the feeding end. At least two discharging holes are arranged on the lower die, each flow guide hole and each discharging hole are arranged one by one, and a working belt is arranged on one end of the lower die close to the upper die. The working belt comprises a plurality of tooth position die holes and strip-shaped die holes, each tooth position die hole and strip-shaped die hole are communicated, each tooth position die hole is arranged in parallel and at intervals, the flow guide hole, the working belt and the discharging hole are communicated in sequence, and each tooth position die hole is arranged in a wave shape. The extrusion die of the high-multiplying tooth radiator can effectively improve the yield of the product and ensure the structural strength of the die.

Description

Technical Field

[0001] This invention relates to the field of aluminum alloy processing technology, specifically to an extrusion die for a high-density tooth radiator and its quenching process. Background Technology

[0002] Aluminum alloy radiators are widely used in all aspects of our lives, including aerospace, photovoltaic power generation, engineering machinery, automotive lightweighting, home appliances, communication base stations, high-speed trains, and many other industries. Due to their comprehensive advantages such as good thermal conductivity, corrosion resistance, light weight, high strength, ease of processing, and relatively low operating costs, they play an indispensable role in various industries. Currently, the market is mainly dominated by 1-series and 6-series aluminum alloys. Among them, 1-series aluminum alloy radiators are mainly formed by spade forming, while 6-series aluminum alloy radiators are mainly formed by hot extrusion.

[0003] High-tooth aluminum alloy radiators, due to their excessive number of teeth and large tooth height, have an excessively large ratio between the height of the fins and the gap between adjacent fins. Generally, radiators with this ratio exceeding 14 are called high-tooth radiators. Therefore, their extrusion dies must also have many slender teeth to withstand a large amount of pressure. Each tooth on the die must have high strength and toughness. In particular, high-tooth radiator dies place higher demands on die design, processing, and extrusion process control. Slight oversights can lead to die failure. Traditional radiator die designs are no longer suitable for high-tooth radiators. Otherwise, insufficient and uneven material supply to each fin during extrusion will occur, making it difficult to balance and control the material flow rate. Traditional high-tooth radiator dies can only produce a single radiator and cannot guarantee the material supply balance between the fins and the substrate, or between the center and edge of the radiator. They also cannot guarantee the strength of the fin roots, which may result in broken teeth, leading to low production efficiency and substandard extruded profile products. Summary of the Invention

[0004] Therefore, to address the problem that traditional high-tooth radiator dies can only produce a single radiator and cannot guarantee the strength of the fin roots, potentially leading to tooth breakage, resulting in low production efficiency and substandard extruded profile quality, one objective of this invention is to provide an extrusion die for a high-tooth radiator, the specific technical solution of which is as follows:

[0005] An extrusion die for a high-ratio toothed radiator includes an upper die and a lower die. The upper die is connected to the lower die. The end face of the upper die away from the lower die is the inlet end, and the end face of the upper die near the lower die is the outlet end. The outlet end is connected to the lower die. The inlet end is provided with at least two guide holes. The lower die is provided with at least two outlet holes, and each guide hole corresponds to each outlet hole. A working strip is provided at the end of the lower die near the upper die. The working strip includes multiple toothed die holes and strip die holes, which are connected to each other. The toothed die holes are arranged in parallel and spaced apart. The guide holes, the working strip, and the outlet holes are connected in sequence. The toothed die holes are arranged in a wavy shape.

[0006] Furthermore, the lower mold is also provided with a hollow blade part corresponding to the discharge hole. The guide hole, the working belt, and the hollow blade part are connected in sequence along the direction from the inlet end to the outlet end, and the hollow blade part is connected to the discharge hole.

[0007] Furthermore, each guide hole includes a first part and a second part, the first part and the second part are arranged in a mirror symmetrical manner, the first part includes a first straight segment, a first arc segment, a second straight segment, a second arc segment and a third straight segment, the first straight segment, the first arc segment, the second straight segment, the second arc segment and the third straight segment are connected in sequence, the first straight segment and the third straight segment are arranged in parallel, and the length of the third straight segment is greater than the length of the first straight segment.

[0008] Furthermore, each guide hole is H-shaped, and each guide hole blocks the corresponding strip mold hole from above.

[0009] Furthermore, each discharge hole is rectangular, and the cross-sectional length of the guide hole is greater than the cross-sectional length of the discharge hole.

[0010] Furthermore, the upper mold has a positioning protrusion at one end near the lower mold, and the lower mold has a positioning groove at one end near the upper mold, and the positioning protrusion can abut against the positioning groove.

[0011] Furthermore, a number of notches are provided on one end of the strip-shaped die hole near the root of the toothed die hole, and the length of each notch pressed away from the extrusion direction of the upper die is 1.5mm.

[0012] Furthermore, the length of the root of each tooth die hole pressed away from the pressing direction of the upper die is 3mm.

[0013] Another objective of this invention is to provide a quenching process method for a high-density radiator.

[0014] A quenching process for a high-density toothed radiator includes: step S1, extruding the product to be cooled using the extrusion mold of the high-density toothed radiator; step S2, cooling by setting up a windbreak device to block the air vents of the fans on both sides of the bottom of the product, so that the fan force is directly directed at the center of the bottom of the product for cooling, ensuring that the bottom edge of the product and the center of the bottom of the product are cooled evenly.

[0015] Furthermore, the windbreak device is configured as a windbreak iron plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The extrusion die of the high-ratio tooth radiator of the present invention is provided with at least two guide holes and at least two discharge holes; the lower die is provided with at least two discharge holes, which are used for pulling out the extrusion plate to avoid collision between the extrusion plate and the die, thereby preventing the extrusion plate from being dragged and broken. Each guide hole and each discharge hole are set in a one-to-one correspondence, so as to achieve the purpose of producing more than two high-ratio tooth radiators at the same time, effectively and rationally arranging the products in order to increase the product output. The tooth position die holes are set in a wave shape, which can effectively ensure the structural strength of the die, improve the impact resistance, make the structure of the produced product stable, and avoid the occurrence of tooth breakage. At the same time, the wave-shaped structure effectively improves the downward extrusion speed and efficiency of the fluid, increases the vortex of heat dissipation, and achieves the effect of increasing the efficiency of the radiator. Attached Figure Description

[0017] The invention will be further understood from the following description taken in conjunction with the accompanying drawings. The components in the drawings are not necessarily drawn to scale, but rather the emphasis is on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0018] Figure 1 This is a schematic diagram of the extrusion die for a high-density tooth radiator according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the upper mold structure according to an embodiment of the present invention;

[0020] Figure 3 This is a side view of the upper mold according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the lower mold structure according to an embodiment of the present invention;

[0022] Figure 5 This is a side view of the lower mold according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the working belt structure according to an embodiment of the present invention;

[0024] Figure 7This is a flowchart of the quenching process method for a high-density radiator according to an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Upper die; 11. Feed end; 12. Discharge end; 13. Guide hole; 131. First part; 1311. First straight segment; 1312. First arc segment; 1313. Second straight segment; 1314. Second arc segment; 1315. Third straight segment; 132. Second part; 14. Positioning protrusion; 2. Lower die; 21. Discharge hole; 22. Working belt; 221. Toothed die hole; 222. Strip die hole; 223. Notch; 224. Process hole; 23. Empty cutter part; 24. Positioning groove. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to its embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of protection of the invention.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] In this invention, "first" and "second" do not represent a specific quantity or order, but are merely used to distinguish names.

[0031] like Figure 1-6As shown, an extrusion die for a high-ratio toothed radiator according to one embodiment of the present invention includes an upper die 1 and a lower die 2. The upper die 1 is connected to the lower die 2. The end face of the upper die 1 away from the lower die 2 is the inlet end 11, and the end face of the upper die 1 near the lower die 2 is the outlet end 12. The outlet end 12 is connected to the lower die 2. The inlet end 11 is provided with at least two guide holes 13. The lower die 2 is provided with at least two outlet holes 21. The outlet holes 21 are used to pull out the extrusion plate to avoid collision between the extrusion plate and the die, which would cause the extrusion plate to be torn. Each guide hole 13 and each outlet hole 21 are arranged in a one-to-one correspondence to achieve the purpose of producing two or more high-ratio toothed radiators at the same time, effectively and rationally arranging the products. To increase product output, a working belt 22 is provided at one end of the lower mold 2 near the upper mold 1. The working belt 22 includes multiple toothed die holes 221 and strip die holes 222. The toothed die holes 221 and strip die holes 222 are connected. The toothed die holes 221 are arranged in parallel and spaced apart. The guide hole 13, the working belt 22 and the discharge hole 21 are connected in sequence. The toothed die holes 221 are arranged in a wave shape, which can effectively ensure the structural strength of the mold, improve the impact resistance, make the structure of the produced product stable, and avoid tooth breakage. At the same time, the wave-shaped structure effectively improves the downward extrusion speed and efficiency of the fluid, increases the vortex of heat dissipation, and achieves the effect of increasing the efficiency of the heat sink.

[0032] In addition, in this embodiment, the wavy bending direction of the two toothed die holes 221 located on one side of the strip die hole 222 is opposite to that of the other toothed die holes 221. The upper die 1 has a diameter of 326.5 mm and a thickness of 105 mm, and the lower die 2 has a diameter of 326.5 mm and a thickness of 110 mm. This increases the die diameter, and the thickness of the lower die 2 is greater than that of the upper die 1, which can better support the product to be formed and make the structure of the produced product stable. The length of the strip die hole 222 is set to 110.5 mm, with an upper and lower error of 0.2 mm. The total length of each toothed die hole 221 on the strip die hole 222 is 105 mm. The length of the two toothed die holes 221 located on one side of the strip die hole 222 is less than that of the other toothed die holes 221, which speeds up the material flow rate on one side of the working belt 22, realizes the material supply balance to each part of the working belt 22, prevents large differences in the flow speed of the material flow, which would lead to inconsistent forming speed of the extrusion plate, ensures the structural strength of the die, and improves the impact resistance.

[0033] As a preferred embodiment of the present invention, it may also have the following additional technical features: the lower die 2 is further provided with a hollow blade part 23 corresponding to the discharge hole 21. The guide hole 13, the working belt 22, and the hollow blade part 23 are connected sequentially along the direction from the feed end 11 to the discharge end 12. The direction from the feed end 11 to the discharge end 12 is the direction of material flow. After the material flow passes through the guide hole 13, it is squeezed by the working belt 22 to form the product to be formed. The hollow blade part 23 is connected to the discharge hole 21. The hollow blade part 23 allows the extruded product to pass safely through the lower die 2, reducing the severe scraping of the die or the force generated by the die, further enhancing the die life and ensuring the quality of the extruded plate. The hollow blade part 23 and the discharge hole 21 form a stepped shape. The cross-sectional area of ​​the hollow blade part 23 and the cross-sectional area of ​​the discharge hole 21 gradually increase from the feed end to the discharge end 12, which can better support the product to be formed and make the structure of the produced product stable.

[0034] As a preferred embodiment of the present invention, it may also have the following additional technical features: each guide hole 13 includes a first part 131 and a second part 132, the first part 131 and the second part 132 are arranged in a mirror symmetrical manner to form an interval space, the interval space surrounds the outer contour of the working belt 22, so that the material flow can enter the working belt 22 sufficiently and evenly, the first part 131 includes a first straight segment 1311, a first arc segment 1312, a second straight segment 1313, a second arc segment 1314 and a third straight segment 1315, the first straight segment 1311, the first arc segment 1312, the second straight segment 1313, the second arc segment 1314 and the third straight segment 1315, the first straight segment 1311, the first arc segment 1312, the second straight segment 1313, the second arc segment 1314 and the third straight segment 1315, the first straight segment 1311, the first arc segment 1312, the second arc ... Line segment 1313, second arc segment 1314, and third straight segment 1315 are connected in sequence. First straight segment 1311 and third straight segment 1315 are set in parallel. The length of third straight segment 1315 is greater than the length of first straight segment 1311, which slows down the flow rate at the root of the toothed die hole 221. Finally, the material can be discharged at the same time, avoiding the situation where aluminum alloy cannot pass through the die and causing die blockage. This achieves material balance for each part of the working belt 22, prevents large differences in material flow speed, and avoids inconsistent forming speed of the extrusion plate. It also ensures the structural strength of the die and improves its impact resistance.

[0035] As a preferred embodiment of the present invention, it may also have the following additional technical features: each guide hole 13 is "H" shaped, and each guide hole 13 blocks the strip die hole 222 corresponding to the guide hole 13 from above, so as to achieve material supply balance to each part of the working belt 22 and prevent large differences in the flow speed of the material flow, which would lead to inconsistent forming speed of the extrusion plate; by optimizing the layout of the guide holes 13, the problems of difficult forming and dimensional deviation in the extrusion production process are solved.

[0036] As a preferred embodiment of the present invention, it may also have the following additional technical features: each discharge hole 21 is rectangular, and the cross-sectional length of the guide hole 13 is greater than the cross-sectional length of the discharge hole 21, so as to better and more evenly guide the material flow to the discharge hole 21, realize the material supply balance to each part of the working belt 22, prevent the material flow speed difference from being large, resulting in inconsistent forming speed of the extrusion plate, and ensure the structural strength of the mold.

[0037] As a preferred embodiment of the present invention, it may also have the following additional technical features: the strip die hole 222 is provided with a process hole 224 to facilitate subsequent processing; specifically, in this embodiment, the corners of the outer contour of the working belt 22 are all rounded, that is, the right angles formed by the straight edges of the outer contour of the working belt 22 are all rounded, which effectively prevents the corners of the extruded product from being dragged and broken when it is pulled out after forming, ensuring the strength of the fin root and ensuring the quality of the extruded profile product.

[0038] As a preferred embodiment of the present invention, it may also have the following additional technical features: A plurality of notches 223 are provided on one end of the strip-shaped die hole 222 near the root of the toothed die hole 221. Each notch 223 is pressed for a length of 1.5 mm in the pressing direction away from the upper die 1. The toothed die hole 221 is pressed for a length of 0.5 mm in the pressing direction away from the upper die 1 at one end away from the strip-shaped die hole 222. The pressing length of the toothed die hole 221 in the direction away from the notch 223 increases linearly from 0.5 mm to 1.5 mm. The notches 223 are located on the side of adjacent toothed die holes 221 and are relatively thin, thus requiring a shorter pressing length. The notches 223 are located on the side of adjacent toothed die holes 221 and are relatively thin, thus requiring a shorter pressing length. The extrusion length away from the upper die 1 is 3mm. Since the root of each tooth die hole 221 is close to the thicker part of the base plate, the extrusion speed of the aluminum alloy needs to be slowed down. At this time, the extrusion length needs to be extended so that the final output can achieve the effect of simultaneous output. This avoids the situation where the aluminum alloy cannot pass through the die and causes die blockage. It achieves material balance for each part of the working belt 22, prevents large differences in the flow speed of the material flow, and avoids inconsistent forming speed of the extrusion plate. It also ensures the structural strength of the die and improves the impact resistance. In addition, in other embodiments, the extrusion length of the tooth die hole 221 away from the strip die hole 222 away from the extrusion direction away from the upper die 1 can be designed according to actual production needs.

[0039] In addition, the upper die 1 and the lower die 2 are connected by fasteners, which include fixing parts and positioning parts. The upper die 1 and the lower die 2 are connected by the fixing parts. Before extrusion, the upper die 1 and the lower die 2 are positioned by the positioning parts when they are fastened together. Then, the upper die 1 and the lower die 2 are fixedly connected by the fixing parts, which effectively prevents the upper die 1 and the lower die 2 from shifting during the extrusion process, ensures the structural strength of the die, improves the impact resistance, and effectively ensures the quality of the extruded profile products.

[0040] More specifically, a positioning protrusion 14 is provided on the end of the upper die 1 near the lower die 2, and a positioning groove 24 is provided on the end of the lower die 2 near the upper die 1. The positioning protrusion 14 can abut against the positioning groove 24, further ensuring the stability of the connection between the upper die 1 and the lower die 2, effectively preventing the upper die 1 and the lower die 2 from shifting during the extrusion process, ensuring the structural strength of the die, improving the impact resistance, and effectively ensuring the quality of the extruded profile product.

[0041] Please refer to the following: Figure 7 Another objective of this invention is to provide a quenching process method for a high-density radiator, wherein the online quenching process can ensure the uniform dispersion and precipitation of second-phase particles during the later aging process.

[0042] A quenching process for a high-density toothed radiator includes: Step S1, extruding the high-density toothed radiator using an extrusion die to form a product to be cooled; Step S2, cooling by setting up a baffle device to block the air vents on both sides of the bottom of the product, ensuring that the air velocity on both sides of the bottom of the high-density toothed radiator profile is 0 m / s, so that the fan force is directly directed at the center of the bottom of the product for cooling, while the cooling of the top and bottom sides is natural cooling, reducing tooth deformation caused by quenching stress; ensuring uniform cooling between the bottom edge and the center of the bottom of the product, reducing the formation of waves on the edge teeth, improving the wave elimination effect, and improving the quality of the final product. Compared with the prior art, this method ensures that the air velocity on both sides of the top and bottom of the high-density toothed radiator profile is 0 m / s, further reducing the formation of waves on the edge teeth, and may even completely eliminate the generation of waves. Specifically, in this embodiment, the wind deflector is set as a wind deflector plate. The wind deflector plate is used to block the fan vents on both sides of the bottom of the product, ensuring that the fan blows only towards the center of the bottom of the product, and ensuring uniform cooling between the bottom edge and the center of the bottom of the product. In the prior art, cooling of profiles is often achieved by increasing the wind speed. The higher the wind speed, the faster the cooling speed of the extruded profile, the better the strengthening effect, and the higher the bottom hardness, but the cost also increases accordingly. In this embodiment, since the heat sink plate blocks part of the fan vents, the air blown out of the fan is drawn towards the center, which plays a converging role. The air is guided to the bottom center of the high-density toothed heat sink profile, which can reduce the wind force and achieve the same cooling effect, effectively saving cooling costs.

[0043] The extrusion die of the high-ratio tooth radiator in this embodiment has a reasonable structural design and is easy to use. In this embodiment, the extrusion die of the high-ratio tooth radiator can effectively increase the output of the product and effectively ensure the structural strength of the die.

[0044] In the description of the above embodiments, "several" means "more than one," "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A quenching process method for a high-density tooth radiator, characterized in that, include: Step S1: Extrude the product to be cooled using the extrusion die of the high-ratio toothed radiator; Step S2: Cooling is performed by setting up a wind deflector to block the air vents of the fans on both sides of the bottom of the product, so that the fan force is directly directed at the center of the bottom of the product for cooling, ensuring that the bottom edge and the center of the bottom of the product are cooled evenly. The extrusion die of the high-density tooth radiator includes an upper die (1) and a lower die (2). The upper die (1) is connected to the lower die (2). The end face of the upper die (1) away from the lower die (2) is the feed end (11). The end face of the upper die (1) close to the lower die (2) is the discharge end (12). The discharge end (12) is connected to the lower die (2). The feed end (11) is provided with at least two guide holes (13). The lower mold (2) is provided with at least two discharge holes (21), and each guide hole (13) is provided in correspondence with each discharge hole (21). The lower mold (2) is provided with a working belt (22) at one end near the upper mold (1). The working belt (22) includes multiple toothed die holes (221) and strip die holes (222), each toothed die hole (221) and strip die hole (222) is connected, each toothed die hole (221) is arranged in parallel at intervals, the guide hole (13), the working belt (22) and the discharge hole (21) are connected in sequence, and each toothed die hole (221) is arranged in a wave shape; The lower mold (2) is also provided with a hollow blade part (23) corresponding to the discharge hole (21). The guide hole (13), the working belt (22), and the hollow blade part (23) are connected in sequence along the direction from the feed end (11) to the discharge end (12). The hollow blade part (23) is connected to the discharge hole (21). The wavy bending direction of the two toothed mold holes (221) set on one side of the strip mold hole (222) is opposite to the wavy bending direction of the other toothed mold holes (221); the length of the two toothed mold holes (221) set on one side of the strip mold hole (222) is less than the length of the other toothed mold holes (221); Each guide hole (13) includes a first part (131) and a second part (132). The first part (131) and the second part (132) are arranged in a mirror symmetrical manner. The first part (131) includes a first straight segment (1311), a first arc segment (1312), a second straight segment (1313), a second arc segment (1314), and a third straight segment (1315). The first straight segment (1311), the first arc segment (1312), the second straight segment (1313), the second arc segment (1314), and the third straight segment (1315) are connected in sequence. The first straight segment (1311) and the third straight segment (1315) are arranged in parallel. The length of the third straight segment (1315) is greater than the length of the first straight segment (1311). The strip-shaped die hole (222) has several notches (223) at one end near the root of the toothed die hole (221). Each notch (223) is pressed for 1.5 mm in the direction away from the upper die (1). The toothed die hole is pressed for 0.5 mm in the direction away from the strip-shaped die hole. The pressing length of the toothed die hole in the direction away from the strip-shaped die hole increases linearly from 0.5 mm to 1.5 mm in the direction of the notch. The notch is located on the side of the adjacent toothed die hole. The root of each toothed die hole (221) is pressed for 3 mm in the direction away from the upper die (1).

2. The quenching process method for the high-density tooth radiator according to claim 1, characterized in that, Each guide hole (13) is "H" shaped, and each guide hole (13) blocks the strip mold hole (222) corresponding to the guide hole (13) from above.

3. The quenching process method for the high-density tooth radiator according to claim 1, characterized in that, Each discharge hole (21) is rectangular, and the cross-sectional length of the guide hole (13) is greater than the cross-sectional length of the discharge hole (21).

4. The quenching process method for the high-density tooth radiator according to claim 1, characterized in that, The upper mold (1) has a positioning protrusion (14) at one end near the lower mold (2), and the lower mold (2) has a positioning groove (24) at one end near the upper mold (1). The positioning protrusion (14) can abut against the positioning groove (24).

5. The quenching process method for the high-density tooth radiator according to claim 1, characterized in that, The windbreak device is a windbreak iron plate.

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