An aluminum profile extrusion die with an adjustable core structure

Abstract

The present invention relates to the technical field of aluminum extrusion dies, and discloses an aluminum profile extrusion die with an adjustable die core structure, including a placement seat, and a module for extruding aluminum profiles is arranged inside the placement seat; wherein, the module includes an upper die seat, the outer surface of the upper die seat fits with the inner wall of the placement seat, and the upper die seat is detachably installed with a lower die seat through pins arranged on its outer surface. This aluminum profile extrusion die with an adjustable die core structure can effectively solve the problems in the prior art that traditional aluminum profile dies are usually of a fixed structure, and once the appearance of the working belt inside the die core is determined, it is difficult to change. When different-shaped aluminum profile products need to be produced, the entire die often needs to be replaced, and the manufacturing cost of the die is high. The manufacture of a set of dies requires a large amount of manpower, material resources and time, resulting in a significant decrease in production efficiency and high production costs.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum extrusion dies, and more particularly to an aluminum profile extrusion die with an adjustable die core structure. Background Art

[0002] Aluminum profiles are alloy materials mainly composed of aluminum and are widely used in the industrial and construction fields. In the aluminum profile processing industry, aluminum profile dies play a crucial role in the production of aluminum profiles. With the development of industry and the increasing diversification of market demands, the application scenarios of aluminum profiles have been continuously expanded, from construction, automotive manufacturing to electronic equipment and other fields, and the requirements for the shape and specifications of aluminum profiles have become increasingly rich and diverse.

[0003] In the prior art, traditional aluminum profile dies are usually of a fixed structure, and once the appearance of the working belt inside the die core is determined, it is difficult to change. When different-shaped aluminum profile products need to be produced, the entire die often needs to be replaced, and the manufacturing cost of the die is high. The manufacture of a set of dies requires a large amount of manpower, material resources and time, resulting in a significant decrease in production efficiency and high production costs. Summary of the Invention

[0004] In view of the above-mentioned drawbacks of the prior art, the present invention provides an aluminum profile extrusion die with an adjustable die core structure, which can effectively solve the problems in the prior art that traditional aluminum profile dies are usually of a fixed structure, and once the appearance of the working belt inside the die core is determined, it is difficult to change. When different-shaped aluminum profile products need to be produced, the entire die often needs to be replaced, and the manufacturing cost of the die is high. The manufacture of a set of dies requires a large amount of manpower, material resources and time, resulting in a significant decrease in production efficiency and high production costs.

[0005] To achieve the above object, the present invention is realized through the following technical solutions:

[0006] The present invention provides an aluminum profile extrusion die with an adjustable die core structure, including:

[0007] A placement seat, inside which a module for extruding aluminum profiles is provided;

[0008] Wherein, the module includes an upper die seat, the outer surface of the upper die seat fits against the inner wall of the placement seat, the upper die seat is detachably installed with a lower die seat through pins provided on its outer surface, a welding chamber is provided on one side of the lower die seat close to the upper die seat, and a die core assembly is detachably installed in the lower die seat through a placement cavity provided inside it, and the placement cavity is in communication with the inside of the welding chamber;

[0009] Among them, the mold core assembly includes a mold core block that fits tightly against the inner wall of the placement cavity. A clamping groove is provided on the side of the mold core block away from the upper mold base, and a connecting piece that slides with the inner wall of the clamping groove is provided on the side of the inner wall of the placement cavity away from the upper mold base.

[0010] Further, the connecting piece includes a limiting post. The bottom of the limiting post is fixedly connected to the side of the inner wall of the placement cavity away from the upper mold base. The limiting post is slidably connected with a reciprocating block through a sliding groove opened on the outer surface of its circumference.

[0011] Further, four limiting posts are provided and are circumferentially and arrayedly distributed around the mold core block. The four sliding grooves are all designed with the notch facing downwards, and the outer end of the reciprocating block is designed with an arc surface.

[0012] Further, the inner wall of the placement seat is designed to be circular and fits against the outer surface of the module. The inner wall of the placement seat is provided with a U-shaped groove and a positioning groove, and the interiors of the U-shaped groove and the positioning groove are connected. A sliding buckle is fixedly connected to the outer circumferential surface of the lower mold base, and the sliding buckle fits against the inner wall of the U-shaped groove.

[0013] Further, the U-shaped groove and the positioning groove are vertically distributed, and the intersection of the U-shaped groove and the positioning groove is designed with an arc angle.

[0014] Further, a sliding groove is provided on the inner wall surface of the mold core block. A support plate is fixedly connected inside the sliding groove. A working belt is slidably connected inside the sliding groove, and the working belt and the mold core block are designed to be detachable.

[0015] Further, the working belt is designed to be hollow, and the inner wall surface of the working belt fits against the outer surface of the support plate. Friction grooves are provided on both the inner wall surface of the working belt and the outer surface of the support plate.

[0016] Further, a convex mold that cooperates with the outer surface of the working belt to extrude aluminum profiles is fixedly connected to the side of the upper mold base close to the lower mold base.

[0017] The technical solution provided by the present invention has the following beneficial effects compared with the prior art:

[0018] The present invention is provided with a lower die base and a die core assembly. The die core assembly is placed in a placement cavity inside the lower die base, and the overall design of the die core assembly and the lower die base is detachable. The lower die base is embedded inside the die core assembly through a limit post. When the notch of the chute in the limit post faces downward, a certain force is applied to the lower die base and the die core assembly. The outer surface of the lower die base fits with the limit baffle, generating a relative force. The reciprocating block inside the limit post quickly enters the limit cavity connected to the inside of the card slot under the action of gravity, realizing the fixing action of the lower die base and the die core assembly. The punch of the upper die base determines the inner shape of the finished product, while the shape enclosed by the working belt in the die core assembly determines the outer shape of the finished product. It can be applied to the production of different products with consistent internal dimensions and shapes, can flexibly adapt to these changes, improves the utilization rate of the module, can meet diverse production requirements, and reduces the cost of enterprises replacing molds. Brief Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 Schematic diagram of the three-dimensional structure of the embodiment of the present invention;

[0021] Figure 2 Schematic diagram of the sectional structure of the placement seat in the embodiment of the present invention;

[0022] Figure 3 Schematic diagram of the sectional structure of the placement seat from another angle in the embodiment of the present invention;

[0023] Figure 4 For the embodiment of the present invention Figure 3 Schematic diagram of the partial enlarged structure at B in the middle;

[0024] Figure 5 Schematic diagram of the separation structure of the module in the embodiment of the present invention;

[0025] Figure 6 Schematic diagram of the separation structure of the lower die base and the die core assembly in the embodiment of the present invention;

[0026] Figure 7 Schematic diagram of the structure of the die core assembly in the embodiment of the present invention;

[0027] Figure 8 Schematic diagram of the separation structure of the die core block and the working belt in the embodiment of the present invention;

[0028] Figure 9 Schematic diagram of the structure of the placement seat in the embodiment of the present invention;

[0029] Figure 10 For the embodiment of the present invention Figure 2 is a schematic structural diagram of a partial enlargement at position A in the figure.

[0030] The reference numerals in the figure respectively represent: 1, placing seat; 11, U-shaped groove; 12, positioning groove; 2, module; 21, upper die holder; 211, punch; 22, lower die holder; 221, placing cavity; 224, sliding buckle; 23, die core assembly; 231, die core block; 2311, clamping groove; 2312, sliding groove; 232, support plate; 233, working belt; 2331, friction groove; 24, connecting member; 241, limiting post; 242, reciprocating block. Specific embodiments

[0031] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] The present invention will be further described below with reference to the embodiments.

[0033] Embodiment:

[0034] Please refer to Figures 1-10 , the present invention provides a technical solution: an aluminum profile extrusion die with an adjustable die core structure, including:

[0035] A placing seat 1, and a module 2 for extruding aluminum profiles is arranged inside the placing seat 1; a fixing member for pressing down the module 2 to prevent the module 2 from moving up and down is further arranged on the top of the placing seat 1.

[0036] Among them, the module 2 includes an upper die holder 21, the outer surface of the upper die holder 21 is in contact with the inner wall of the placing seat 1, the upper die holder 21 is detachably installed with a lower die holder 22 through a pin arranged on its outer surface, a welding chamber is opened on one side of the lower die holder 22 close to the upper die holder 21, and a die core assembly 23 is detachably installed in the placing cavity 221 opened in the lower die holder 22 through the placing cavity 221, and the placing cavity 221 is connected to the inside of the welding chamber;

[0037] Among them, the die core assembly 23 includes a die core block 231 that is closely attached to the inner wall of the placing cavity 221. A clamping groove 2311 is opened on one side of the die core block 231 away from the upper die holder 21, and a connecting member 24 that slides with the inner wall of the clamping groove 2311 is arranged on one side of the inner wall of the placing cavity 221 away from the upper die holder 21. Four clamping grooves 2311 are arranged in a circumferential distribution inside the die core block 231.

[0038] The connecting member 24 includes a limiting post 241. The bottom of the limiting post 241 is fixedly connected to the inner wall of the placing cavity 221 on the side away from the upper die base 21. The limiting post 241 is slidably connected with a reciprocating block 242 through a chute opened on its circumferential outer surface. A limiting groove communicating with the inside of the clamping groove 2311 is opened inside the die core block 231. When the reciprocating block 242 is in the unfolded state, the outer surface of the reciprocating block 242 is in contact with the inner wall of the limiting groove.

[0039] Four limiting posts 241 are provided and are circumferentially and arrayedly distributed around the die core block 231. All four chutes are designed with the notch facing downwards, and the outer end of the reciprocating block 242 is designed with an arc surface.

[0040] The inner wall of the placing seat 1 is designed as a circle that fits the outer surface of the module 2. The inner wall of the placing seat 1 is provided with a U-shaped groove 11 and a positioning groove 12. The inside of the U-shaped groove 11 is communicated with the inside of the positioning groove 12. A sliding buckle 224 is fixedly connected to the circumferential outer surface of the lower die base 22, and the sliding buckle 224 is in contact with the inner wall of the U-shaped groove 11. Two positioning grooves 12 are provided and are symmetrically distributed with the perpendicular bisector of the placing seat 1 as the center.

[0041] The U-shaped groove 11 and the positioning groove 12 are vertically distributed, and the intersection of the U-shaped groove 11 and the positioning groove 12 is designed with an arc angle.

[0042] A sliding groove 2312 is opened on the inner wall surface of the die core block 231. A support plate 232 is fixedly connected inside the sliding groove 2312. A working belt 233 is slidably connected inside the sliding groove 2312. The working belt 233 and the die core block 231 are designed to be detachable. The inside of the die core block 231 is hollowed out.

[0043] The working belt 233 is designed to be hollow, and the inner wall surface of the working belt 233 is in contact with the outer surface of the support plate 232. Friction grooves 2331 are opened on both the inner wall surface of the working belt 233 and the outer surface of the support plate 232. Four working belts 233 are provided and are circumferentially and arrayedly distributed around the die core block 231. Any one of the working belts 233 is symmetrically designed, which can be used to extend the service life of the module 2 by taking out the working belt 233 and swapping the upper and lower positions after the part on the side close to the upper die base 21 is worn.

[0044] A punch 211 for extruding aluminum profiles in cooperation with the outer surface of the working belt 233 is fixedly connected to the side of the upper die base 21 close to the lower die base 22.

[0045] The process of combining the module 2 with the placing seat 1:

[0046] In practical applications, the entire module 2 is placed inside the circumference of the placement seat 1. The placement seat 1 is designed in an overall U-shaped open style. After the module 2 is stably placed, it can be fixed inside the placement seat 1 by pressing down with the upper fixing part to ensure stability during the extrusion process.

[0047] The upper die holder 21, the lower die holder 22 and the die core assembly 23 adopt a separable structure design. The punch 211 on the outside of the upper die holder 21 determines the internal shape of the extruded aluminum material, while the working belt 233 determines the outer surface shape of the aluminum profile after extrusion. The space enclosed by the punch 211 and the working belt 233 determines the appearance shape of the extrusion.

[0048] Taking the extrusion of a hollow square tube as an example for this module 2, the punch 211 is square, and the shape formed by the working belt 233 inside the die core block 231 is also square. The working belt 233 inside the die core block 231 adopts a split design. The two adjacent faces of the working belt 233 and the punch 211 are parallel to each other. The shape of the working belt 233 on the side close to the punch 211 determines the external shape of the square aluminum material. Different-shaped working belts 233 can be replaced in the same module 2 to complete different products with the same internal dimensions and shapes, improving the utilization rate of the products.

[0049] Determine the aluminum profile to be processed, select the upper die holder 21 that matches its internal shape and size, and then select the appropriate die core assembly 23 according to the requirements. The staff inserts all four working belts 233 into the sliding grooves 2312. At this time, the outer surface of the working belt 233 fits with the inner wall of the sliding groove 2312. The working belt 233 is within its movable range and is at the position farthest from the center of the lower die holder 22. The working belt 233 is designed in a hollow style, and the inner wall surface of the working belt 233 fits with the outer surface of the support plate 232. According to the requirements, use tools such as vernier calipers to measure the distance that the working belt 233 protrudes from the hollow surface inside the die core block 231, and pull out the four working belts 233 outward by a certain distance in turn to make it meet the required size.

[0050] During this process, the friction grooves 2331 on the inner surface of the working belt 233 fit tightly with the friction grooves 2331 on the outer surface of the support plate 232. The working belt 233, the support plate 232 and the die core block 231 are placed in a crosswise manner, with a large contact area and large friction force. After adjusting the position, it has a certain stability and is difficult to move, realizing the pre-fixation of the position of the working belt 233.

[0051] Slowly lower the lower die holder 22 from the U-shaped opening at the top of the placement seat 1. During this process, the two sliding latches 224 are on the same horizontal plane and are both at the upper position on the outer surface of the lower die holder 22. It is necessary to ensure that the sliding latches 224 on the outer surface of the lower die holder 22 are perpendicular to the U-shaped groove 11. During this process, the outer circumferential surface of the sliding latch 224 fits against the inner wall of the U-shaped groove 11 and moves downward along the U-shaped groove 11 for stable placement. A limiting baffle is provided on the outer surface of the placement seat 1, and the welding chamber in the lower die holder 22 is on the side away from the limiting baffle. At this time, the notch of the chute in the limiting post 241 inside the placement cavity 221 faces upward, and the reciprocating block 242 is inside the limiting post 241 under the action of gravity.

[0052] Place the adjusted die core assembly 23 into the interior of the placement cavity 221 from the direction where the welding chamber is located. The limiting post 241 inside the placement cavity 221 in the lower die holder 22 smoothly enters the inner wall of the card slot 2311 at the bottom of the die core block 231. Among them, the outer surface of the die core block 231 is designed in a non-circular shape, and the outer surface of the die core block 231 fits tightly against the inner wall of the placement cavity 221. Since the reciprocating block 242 is in a contracted state at this time, there will be no collision during the combination of the die core block 231 and the lower die holder 22. There is still a certain distance between the side of the die core block 231 close to the lower die holder 22 and the inner wall of the placement cavity 221. The limiting post 241 is inside the card slot 2311, and the outer end of the limiting post 241 slightly fits against the side of the working belt 233 close to the card slot 2311.

[0053] After the die core assembly 23 is placed, rotate the lower die holder 22 inside the placement seat 1 so that the outer surface of the sliding latch 224 fits against the inner wall of the U-shaped groove 11. During the rotation of the lower die holder 22, the direction of the notch of the chute opened on the outer surface of the limiting post 241 changes with the rotation of the lower die holder 22, and the notch gradually changes from upward to downward. When the sliding latch 224 completely fits against the inner wall of the positioning groove 12, it means that the notch of the outer surface of the limiting post 241 faces directly upward. Under the action of gravity, the reciprocating block 242 has a downward trend inside the card slot 2311.

[0054] When the sliding latch 224 moves to the junction of the U-shaped groove 11 and the positioning groove 12, under the guiding action of the positioning groove 12, the lower die holder 22 and the die core assembly 23 inside it move radially inside the placement seat 1 until the outer surface of the lower die holder 22 fits against the outer surface of the limiting baffle. At this time, the opening of the chute on the outer surface of the limiting post 241 faces directly downward, and the outer surface of the reciprocating block 242 inside the chute fits against the inner wall of the card slot 2311. The reciprocating block 242 is still in a contracted state (a limiting cavity connected to the inside of the card slot 2311 is provided inside the die core block 231. When the reciprocating block 242 expands, its outer surface fits against the inner wall of the limiting cavity).

[0055] The core assembly 23 is fixed to the lower die base 22 by using a press for aluminum profile extrusion behind the placement seat 1, and the output end of the press fits with the side of the core block 231 away from the limit baffle. Under the action of pressure, the core assembly 23 moves into the lower die base 22, and the outer side of the lower die base 22 fits with the limit baffle and cannot move forward further. The lower die base 22 and the core assembly 23 generate relative force under the action of pressure and the limit baffle.

[0056] As the pressure is continued, the core assembly 23 is completely embedded in the lower mold base 22, and the side of the core block 231 close to the limiting baffle is completely in contact with the inner wall of the placement cavity 221. Since the length of the limiting column 241 is slightly greater than the depth of the internal slot 2311 of the core block 231, the outer end of the limiting column 241 passes through the slot 2311, enters the intersection connected to the inside of the sliding slot 2312, and contacts the outer surface of the working belt 233, squeezing the working belt 233 away from the slot 2311, causing the working belt 233 and the support plate 232 to be slightly deformed (the working belt 233 and the support plate 232 are staggered, and under the squeezing force of the limiting column 241, the contact surfaces between the working belt 233, the support plate 232 and the sliding slot 2312 in the core block 231 are all in a tightly fitted state, and the friction grooves 2331 on the outer surfaces of the working belt 233 and the support plate 232 are mutually engaged, which improves the stability of this part).

[0057] During this process, when there is no gap between the contact surfaces of the working belt 233, the support plate 232 and the core block 231, the slot opening on the outer surface of the limiting column 241 is completely consistent with the slot opening of the limiting cavity, and the reciprocating block 242 inside the limiting column 241 falls under the action of gravity and enters the limiting cavity, and the outer surface of the reciprocating block 242 fits the inner wall of the limiting cavity, and the press stops applying pressure and recovers backward. At this point, the working belt 233, the core block 231 and the lower die seat 22 are fixed to form a whole, completing the fixing action of the lower die. The upper die seat 21 is directly placed in the placement seat 1, and the positioning pins set on the outer surface of the upper die seat 21 are used to fix the two. The mold assembly 2 is fixed inside the placement seat 1 by pressing down the fixing piece above the placement seat 1 to ensure stability during the extrusion process.

[0058] Aluminum extrusion process:

[0059] After preheating the product, the heated aluminum rod raw material is loaded from the side of the upper die base 21 away from the lower die base 22. The aluminum rod passes through the diversion holes opened in the circular array inside the upper die base 21 and is evenly divided into several parts. It enters the interior of the upper die base 21 and the lower die base 22 and reaches the welding chamber to be fused again. Under the action of the press, the aluminum material is extruded from the gap surrounded by the working belt 233 and the punch 211 to the hollow part of the core block 231, and the required shape and size of the aluminum profile is obtained.

[0060] The process of removing the module 2 from inside the placement seat 1:

[0061] During the aluminum profile stretch forming process, there will be strong relative sliding friction between the aluminum alloy and the surface of the working belt 233. Moreover, the aluminum alloy itself has a certain hardness and strength, and it also contains some hard phases. These hard phases will act like abrasive grains on the surface of the working belt 233 during the metal flow process, accelerating wear. As the number of extrusion times increases, this friction will continuously wear the surface of the working belt 233, resulting in a decrease in the dimensional accuracy of the working belt 233 and an increase in the overall wall thickness of the extruded product. Workers use tools such as vernier calipers to measure the distance that the outer surface of the working belt 233 protrudes from inside the die core block 231. If it exceeds the required range, the position of the working belt 233 needs to be adjusted.

[0062] First, separate the lower die base 22 from the upper die base 21, and take out the upper die base 21 upward from the U-shaped opening of the placement seat 1. At this time, the lower die base 22 is internally connected to the positioning groove 12 through the sliding buckle 224 on its circumferential outer surface. Move the lower die base 22 toward the side away from the limit baffle until the sliding buckle 224 reaches the connection of the U-shaped groove 11 and the positioning groove 12. Under the guiding action of the U-shaped groove 11, the axial movement of the lower die base 22 along its axis changes to rotation around its axis. When the lower die base 22 rotates inside the U-shaped groove 11 through the sliding buckle 224 provided on its outer surface, during this process, the notch of the internal chute of the multiple limit posts 241 gradually changes from facing downward to upward until the lower die base 22 rotates 180 degrees and the notch of the internal chute of the limit posts 241 faces directly upward. Under the action of friction, the reciprocating block 242 will not directly fall into the inside of the limit post 241. Apply a certain pressure to the side of the die core block 231 close to the upper die base 21, so that there is a certain gap between the outer surface of the reciprocating block 242 and the inner wall of the limit cavity. Under the action of gravity, the reciprocating block 242 quickly contracts into the inside of the limit post 241, and the lower die base 22 and the die core assembly 23 are no longer restricted by the connecting piece 24, and the die core assembly 23 can be separated from the placement cavity 221 in the lower die base 22.

[0063] During the separation of the die core assembly 23 and the lower die base 22, the side of the working belt 233 close to the card slot 2311 is no longer squeezed. The working belt 233 and the support plate 232 return to their initial states, and the adjacent surfaces of each part are slightly attached through the friction groove 2331. After workers measure the wear data of the working belt 233, according to the required dimensions, move the working belt 233 slightly outward until it reaches the required position and stops. According to the friction between the working belt 233 and the support plate 232, pre-fixation is achieved again, and it can be installed in the lower die base 22 and used in cooperation with the upper die base 21 again.

[0064] To sum up, this extrusion die has the following advantages:

[0065] Advantage 1: In the module 2, the lower die base 22 and the die core assembly 23 adopt a detachable design. Different die core blocks 231 can be replaced according to actual production requirements to meet the requirements of different shapes. The punch 211 in the upper die base 21 determines the inner shape of the finished product, while the shape of the working belt 233 in the die core assembly 23 determines the outer shape of the finished product. It can be applied to the production of different products with consistent internal dimensions and shapes, can flexibly adapt to these changes, improve the utilization rate of the module 2, meet diverse production needs, and reduce the cost of enterprises replacing molds.

[0066] Advantage 2: The working belt 233 and the die core block 231 adopt a detachable design and can achieve radial movement relative to the module 2 in the sliding groove 2312. By controlling the distance that the working belt 233 protrudes from the inside of the die core block 231, the wall thickness of the aluminum profile finished product can be adjusted. After wear, by moving its position or trimming the flatness of the outer surface, the working belt 233 can be restored to precision and put into use again, reducing the maintenance cost and replacement frequency of the module 2 and extending the service life of the module 2.

[0067] Advantage 3: During the fixation of the lower die base 22 and the die core assembly 23, the limit post 241 passes through the card slot 2311, the die core block 231 is pressed into the lower die base 22, and the reciprocating block 242 enters the limit cavity under the action of gravity to form a mechanical lock for further fixation to prevent loosening. While the connecting piece 24 connects the die core assembly 23 and the lower die base 22, the outer end of the limit post 241 presses the working belt 233 to make its contact surfaces with each part of the support plate 232 and the die core block 231 fit tightly, which can ensure that the position of the working belt 233 remains fixed and guarantee the precision and quality of the finished product.

[0068] Advantage 4: The inside of the working belt 233 is a hollow structure, and the working belt 233 adopts an upper and lower symmetric structure design. When in the initial state, the part of the outer surface of the working belt 233 close to the upper die base 21 is severely worn due to the influence of temperature and pressure. After using for a period of time, by changing the up and down position of the working belt 233, the part initially close to the upper die base 21 can be changed to be far from the upper die base 21, and the side with less wear at the bottom can be changed to the upper side, improving the repeated utilization rate of the module 2 and extending the service life of the module 2.

[0069] Advantage 5: The working belt 233, the support plate 232 and the die core block 231 are placed in a crosswise manner, increasing the contact area, and the adjacent surfaces are attached through the friction grooves 2331, with a large frictional force. After adjusting the position, it has a certain stability and is difficult to move. It not only facilitates adjusting the position of the working belt 233 according to production requirements, but also can ensure the position accuracy of the working belt 233 during the movement process.

[0070] Advantage 6: When the lower die holder 22 is rotated, the U-shaped groove 11 is converted into a positioning groove 12 to realize the radial limit of the module 2, effectively preventing the rotational displacement during the aluminum profile extrusion process, ensuring the stability of the aluminum profile extrusion, improving the quality of the finished product. At the same time, the lower die holder 22 can be easily rotated inside the U-shaped groove 11 through the sliding buckle 224, which is convenient for the disassembly and installation of the die core assembly 23 and the lower die holder 22.

[0071] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An aluminum profile extrusion die with an adjustable die core structure, characterized in that, Including: A placement seat (1), inside which a module (2) for extruding aluminum profiles is provided; Among them, the module (2) includes an upper die seat (21), the outer surface of the upper die seat (21) fits against the inner wall of the placement seat (1), the upper die seat (21) is detachably installed with a lower die seat (22) through pins provided on its outer surface, a welding chamber is opened on one side of the lower die seat (22) close to the upper die seat (21), and a die core assembly (23) is detachably installed in the placement cavity (221) opened in the lower die seat (22) through the placement cavity (221), and the placement cavity (221) communicates with the inside of the welding chamber; Among them, the die core assembly (23) includes a die core block (231) that closely fits against the inner wall of the placement cavity (221), a card slot (2311) is opened on one side of the die core block (231) away from the upper die seat (21), and a connecting member (24) that slides with the inner wall of the card slot (2311) is provided on one side of the inner wall of the placement cavity (221) away from the upper die seat (21); Among them, a sliding groove (2312) is opened on the inner wall surface of the die core block (231), a support plate (232) is fixedly connected inside the sliding groove (2312), a working belt (233) is slidably connected inside the sliding groove (2312), the working belt (233) and the die core block (231) are designed to be detachable, the working belt (233) is designed to be hollow, and the inner wall surface of the working belt (233) fits against the outer surface of the support plate (232), and friction grooves (2331) are opened on the inner wall surface of the working belt (233) and the outer surface of the support plate (232); 2. The aluminum profile extrusion die with an adjustable die core structure according to claim 1, characterized in that: The connecting member (24) includes a limit post (241), the bottom of the limit post (241) is fixedly connected to one side of the inner wall of the placement cavity (221) away from the upper die seat (21), and a reciprocating block (242) is slidably connected to the limit post (241) through a sliding groove opened on its circumferential outer surface; 3. An aluminum profile extrusion die with an adjustable core structure according to claim 2, characterized in that: Four limit posts (241) are provided and are circumferentially arrayed around the die core block (231), the four sliding grooves are all designed with the notch facing downwards, and the outer end of the reciprocating block (242) is designed with an arc surface; 4. The aluminum profile extrusion die with an adjustable die core structure according to claim 1, characterized in that: The inner wall of the placement seat (1) is designed to be circular and fits against the outer surface of the module (2), a U-shaped groove (11) and a positioning groove (12) are opened on the inner wall of the placement seat (1), the U-shaped groove (11) communicates with the inside of the positioning groove (12), and a sliding buckle (224) is fixedly connected to the circumferential outer surface of the lower die seat (22), and the sliding buckle (224) fits against the inner wall of the U-shaped groove (11); 5. The aluminum profile extrusion die with an adjustable die core structure according to claim 4, characterized in that: The U-shaped groove (11) and the positioning groove (12) are vertically distributed, and the intersection of the U-shaped groove (11) and the positioning groove (12) is designed with an arc angle; 6. The aluminum profile extrusion die with an adjustable die core structure according to claim 4, wherein: One side of the upper die seat (21) close to the lower die seat (22) is fixedly connected with a punch (211) that cooperates with the outer surface of the working belt (233) to extrude aluminum profiles.

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