Hot extrusion die for producing I-shaped aluminum profile

Abstract

The utility model discloses a hot extrusion die for producing an I-shaped aluminum profile, which comprises a guide plate and guide blocks, a feeding hole is formed in the top of the guide plate, the feeding hole is a square hole, the left side wall and the right side wall of the guide plate are arc-shaped and used for molding a round aluminum bar into aluminum flow, and the guide blocks are arranged on the front inner wall and the rear inner wall of the feeding hole. According to the utility model, the two flow guide blocks are arranged in the feeding hole, so that the aluminum flow is subjected to uniform extrusion force in the flowing process, the aluminum flow is enabled to flow uniformly and stably and can smoothly flow into the cavity, and the extrusion production of the I-shaped aluminum profile is completed; by means of the feeding hole with the overall square inlet, a round aluminum bar can be molded into flat and long aluminum flow to flow in the feeding hole, the pressure borne by the aluminum flow is evenly distributed, the pressure borne by the flow guide plate is also relieved, and therefore flowing of the aluminum flow is optimized, meanwhile, loss of the die body is reduced, and batch production of I-shaped aluminum profiles is guaranteed.

Description

Technical Field

[0001] The utility model specifically relates to a hot extrusion die for producing I-shaped aluminum profiles. Background Art

[0002] In building construction, the I-shaped aluminum profile with a large width ratio is a material with a unique cross-sectional shape and excellent physical properties. This material is usually known for its light weight, high strength, and good wind and earthquake resistance. It is mainly applicable to light building components such as wall panels and roof structures. Some with larger specifications are commonly used in the roofs of large-span industrial factories and stadiums. They all play important roles in the field of construction engineering and are an indispensable part.

[0003] At present, the I-shaped building aluminum profiles with a large width ratio are usually produced by hot extrusion dies. However, there are many drawbacks in the existing hot extrusion dies for building aluminum profiles. For example, the diversion effect of the aluminum flow is poor, and the flow is chaotic, disorderly, and uneven during the extrusion process, which affects the finished product quality of the I-shaped aluminum profiles.

[0004] At the same time, when the existing hot extrusion die for I-shaped aluminum profiles responds to the shape change of the aluminum profile, the cavity (22) structure and the feeding method do not fully consider the deformation characteristics of the aluminum profile, and it is difficult to effectively shape the round bar into a shape similar to the profile, increasing the overall loss of the die.

[0005] Therefore, it is necessary to invent a hot extrusion die for producing I-shaped aluminum profiles to solve the above problems. Content of the Utility Model

[0006] (I) Purpose of the Utility Model

[0007] To solve the technical problems in the background art, the utility model proposes a hot extrusion die for producing I-shaped aluminum profiles. By arranging two diversion blocks inside the feeding hole, the extrusion force received by the aluminum flow is uniform during the flowing process, so that the aluminum flow flows evenly and stably, and can smoothly flow into the cavity to complete the extrusion production of the I-shaped aluminum profiles. Further, the feeding hole with a square overall shape enables the circular aluminum bar to be shaped into a flat and long aluminum flow and flow inside the feeding hole. The pressure distribution received by the aluminum flow is uniform, and the pressure received by the diversion plate is also relieved. Thus, while optimizing the flow of the aluminum flow, the loss of the die body is reduced, ensuring the batch production of the I-shaped aluminum profiles.

[0008] (II) Technical Solution

[0009] To achieve the above purpose, the utility model provides the following technical solution: A hot extrusion die for producing I-shaped aluminum profiles,

[0010] It includes a guide plate, a top of which is provided with a feed hole, the feed hole is set as a square hole, and the left and right side walls are set as arcs, which are used for plasticizing round aluminum rods into aluminum flows;

[0011] Guide blocks are arranged on the front and rear inner walls of the feed hole, the tops of the two guide blocks are integrally milled downward to have a first milled surface, the tops of the adjacent side walls of the two guide blocks are milled downward to have a second milled surface, and the bottoms of the two guide blocks are milled upward to have a third milled surface, for maintaining the stability of the aluminum flow;

[0012] A template is installed at the bottom of the guide plate, and a welding chamber is opened on the top of the template. The feed port of the welding chamber has the same shape as the discharge port of the feed hole, which is used for the smooth transition of the aluminum flow;

[0013] The mold cavity is opened inside the template and is connected with the welding chamber, and is used for hot extrusion molding of I-shaped aluminum profiles.

[0014] Preferably, the milling depth of the first milling surface is set to 5 mm, the milling depth of the second milling surface is equal to half of the height of the guide block, the third milling surface is set to an inclined surface, and the maximum milling depth is set to 0.5 mm.

[0015] Preferably, the feed hole is separated by the two guide blocks into two left and right push holes, and a middle hole for connecting the two push holes.

[0016] Preferably, the bottoms of the two push holes are inclined away from the center direction of the guide plate, and the width of the push holes from top to bottom remains equal.

[0017] Preferably, the bottom periphery of the welding chamber is chamfered, and the depth of the welding chamber is not greater than 5 mm.

[0018] Preferably, a discharge hole connected to the cavity is also provided at the bottom of the template, and the discharge hole spreads outward from top to bottom and is stepped as a whole.

[0019] Preferably, the guide plate and the template are fastened to each other through fasteners to form a mold body.

[0020] Compared with the prior art, the above technical solution of the utility model has the following beneficial effects:

[0021] 1. The utility model divides the feeding hole into two left and right pushing holes and an intermediate hole by arranging two guiding blocks in the feeding hole. The aluminum flow can flow towards the welding chamber along the pushing holes and the intermediate hole. During this process, the aluminum flow can stably flow towards the inside of the welding chamber in the pushing holes and the intermediate hole. Moreover, the second milling sunken surface ensures that the aluminum flow has sufficient capacity and can supply materials to the cavity fully. The third milling sunken surface makes the extrusion pressure received by the aluminum flow uniform when flowing out, thus making the aluminum flow evenly distributed and stable in flow. The welding chamber enables the aluminum flow to smoothly flow into the cavity, so that a high-quality I-shaped aluminum profile can be formed inside the cavity.

[0022] 2. When the circular aluminum rod is inserted into the die body through the feeding hole, the overall square-shaped feeding hole at the entrance enables the circular aluminum rod to be plastically deformed into a flat and long aluminum flow and flow inside the feeding hole. The pressure received by the aluminum flow is evenly distributed, promoting the stable and uniform flow of the aluminum flow. The setting of the first milling sunken surface enables the circular aluminum rod to be quickly inserted into the feeding hole and melted into an aluminum flow, reducing the pressure on the guiding plate, reducing the loss of the die body, and ensuring the batch production of the I-shaped aluminum profile. Brief Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0025] Figure 2 It is a half-sectional view of the guiding plate of the present utility model;

[0026] Figure 3 It is a half-sectional view of the template of the present utility model;

[0027] Figure 4 It is an exploded view of the present utility model.

[0028] Description of the Reference Numerals in the Drawings:

[0029] 1 Guiding plate, 11 Feeding hole, 12 Guiding block, 13 First milling sunken surface, 14 Second milling sunken surface, 15 Third milling sunken surface, 16 Pushing hole, 17 Intermediate hole;

[0030] 2 Template, 21 Welding chamber, 22 Cavity, 23 Discharge hole. Detailed Embodiment

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0032] The utility model provides Figures 1-4 A hot extrusion die for producing I-shaped aluminum profiles shown in the figure comprises a guide plate 1, a top of which is provided with a feed hole 11, the feed hole 11 is set as a square hole, and the left and right side walls are set as arcs, which are used to plasticize a round aluminum rod into an aluminum flow;

[0033] The guide blocks 12 are arranged on the front and rear inner walls of the feed hole 11. The tops of the two guide blocks 12 are integrally milled downward to form a first milled surface 13, and the tops of the adjacent side walls of the two guide blocks 12 are milled downward to form a second milled surface 14, and the bottoms of the two guide blocks 12 are milled upward to form a third milled surface 15, which is used to maintain the stability of the aluminum flow;

[0034] The template 2 is installed at the bottom of the guide plate 1. A welding chamber 21 is opened at the top of the template 2. The feed port of the welding chamber 21 has the same shape as the discharge port of the feed hole 11, which is used for the smooth transition of the aluminum flow.

[0035] The mold cavity 22 is opened inside the template 2 and communicated with the welding chamber 21, and is used for hot extrusion molding of I-shaped aluminum profiles.

[0036] In one embodiment, the milling depth of the first milling surface 13 is set to 5 mm, so that the round aluminum rod can be quickly inserted into the feed hole 11 and the pressure on the guide plate 1 is reduced. The milling depth of the second milling surface 14 is equal to half the height of the guide block 12, which increases the capacity of the feed hole 11, so that the aluminum flow can be continuously controlled to the cavity 22 to ensure the production of I-shaped aluminum profiles. The third milling surface 15 is set as an inclined surface, and the maximum milling depth is set to 0.5 mm, which optimizes the discharge effect of the aluminum flow, that is, the extrusion pressure on the aluminum flow when it flows out is uniform and evenly distributed.

[0037] In one embodiment, the feed hole 11 is separated by the two guide blocks 12 into two left and right push holes 16, and a middle hole 17 for connecting the two push holes 16. The bottoms of the two push holes 16 are inclined away from the center direction of the guide plate 1, and the width of the push holes 16 from top to bottom remains equal. The bottom periphery of the welding chamber 21 is chamfered, and the depth of the welding chamber 21 is not more than 5 mm, so that the aluminum flow has a good guiding effect, the flow is smooth during the extrusion process, the flow is relatively stable, and the distribution is uniform, thereby ensuring the finished product quality of the I-shaped aluminum profile.

[0038] In one embodiment, the flow guide plate 1 and the template 2 are tightly fitted to form a die body through fasteners, enabling the flow guide plate 1 and the template 2 to be quickly assembled and used. A discharge hole 23 communicating with the cavity 22 is also provided at the bottom of the template 2. The discharge hole 23 diffuses outward from top to bottom and is overall in a stepped shape, which is conducive to the smooth extrusion of the I-shaped aluminum profile after forming.

[0039] The specific implementation method is as follows: When the present utility model is in use, the staff fastens the template 2 and the flow guide plate 1 through fasteners with fastening functions such as pins and bolts, so as to assemble them into a die body for the production of I-shaped aluminum profiles;

[0040] And when this die body is in use, the round aluminum rod is inserted into the die body through the feed hole 11. Under the restriction of the square feed hole 11, the overall aluminum flow also flows towards the welding chamber 21 in a long and flat shape, making the pressure distribution of the aluminum flow uniform during the flow, optimizing the flow effect of the aluminum flow. And because the first milling sunk surface 13 is provided at the top of the flow guide block 12, the round aluminum rod can be quickly inserted into the feed hole 11 and melted into aluminum flow, reducing the pressure on the flow guide plate 1, enabling it to effectively guide the aluminum flow towards the template 2 direction and providing a longer buffer path for the aluminum flow, which is conducive to the stability of the aluminum flow;

[0041] And when the aluminum flow is in the feed hole 11, a part of it is guided by the two flow guide blocks 12 into the left and right pushing holes 16. Since the width expansion distance of the pushing holes 16 from top to bottom remains equal, the aluminum flow can flow evenly and stably in the pushing holes 16. Another part is in the middle hole 17 between the flow guide blocks 12 and can flow stably downward under the guidance of the second milling sunk surface 14. And the milling of the second milling sunk surface 14 increases the overall capacity of the feed hole 11, enabling the aluminum flow to continuously supply to the welding chamber 21, preparing for the welding of the I-shaped aluminum profile;

[0042] At the same time, because the third milling sunk surface 15 is provided at the bottom of the flow guide block 12, the bottom surface of the flow guide block 12 is smoother, and the frictional resistance with the aluminum flow is reduced. Therefore, when the aluminum flow flows out from the discharge port at the bottom of the feed hole 11, it can receive a more uniform extrusion force, the distribution is more uniform, and the fluctuation and chaos of the aluminum flow during the flow can be reduced. And the inclined surface formed by the inclined milling can also reduce the contact area between the aluminum flow and the flow guide block 12, reducing the burden on the external extruder. Further, the inclined surface can also prevent the generation of bubbles and shrinkage holes in the welding chamber 21, ensuring the forming quality of the I-shaped aluminum profile;

[0043] Finally, after the aluminum flow reaches the inside of the welding chamber 21, due to the same shape of the welding chamber 21 and the discharge port of the feed hole 11 and the chamfer setting at the bottom periphery, the aluminum flow can smoothly flow into the inside of the cavity 22, and the flow of the aluminum flow always remains uniform and stable, so that a high-quality I-shaped aluminum profile can be formed inside the cavity 22;

[0044] This embodiment specifically solves the problems in the prior art that when the hot extrusion die currently used to produce I-shaped building aluminum profiles with a large width ratio is in use, the guiding effect of the aluminum flow is poor, the flow is chaotic and disorderly during the extrusion process, and the distribution is uneven, which affects the finished product quality of the I-shaped aluminum profile, and the cavity 22 structure and the feeding method thereof do not fully consider the deformation characteristics of the aluminum profile, making it difficult to effectively plasticize the round bar into a shape similar to the profile, increasing the overall loss of the die.

[0045] Only some exemplary embodiments of the present invention have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A hot extrusion die for producing I-shaped aluminum profiles, characterized in that: Comprising: A deflector plate (1), at the top of which a feed hole (11) is provided. The feed hole (11) is set as a square hole, and the left and right side walls are set as arcs, for shaping a circular aluminum rod into an aluminum stream. Deflector blocks (12) are arranged on the front and rear inner walls of the feed hole (11). On the top of the two deflector blocks (12), a first milled surface (13) is milled down integrally. On the top of one side wall adjacent to the two deflector blocks (12), a second milled surface (14) is milled down. And on the bottom of the two deflector blocks (12), a third milled surface (15) is milled up, for maintaining the stability of the aluminum stream. A template (2) is installed at the bottom of the deflector plate (1). A welding chamber (21) is provided at the top of the template (2). The shape of the feed port of the welding chamber (21) is the same as that of the discharge port of the feed hole (11), for the smooth transition of the aluminum stream. A cavity (22) is provided inside the template (2) and is connected to the welding chamber (21), for the hot extrusion forming of an I-shaped aluminum profile.

2. The hot extrusion die for producing I-shaped aluminum profiles according to claim 1, characterized in that: The milling depth of the first milled surface (13) is set to 5 mm. The milling depth of the second milled surface (14) is equal to half of the height of the deflector block (12). The third milled surface (15) is set as an inclined surface, and the maximum milling depth is set to 0.5 mm.

3. The hot extrusion die for producing I-shaped aluminum profiles according to claim 1, characterized in that: Wherein, The feed hole (11) is separated by the two deflector blocks (12) into two push holes (16) on the left and right and an intermediate hole (17) for connecting the two push holes (16).

4. A hot extrusion die for producing I-shaped aluminum profiles according to claim 3, characterized in that: The bottoms of the two push holes (16) are inclined away from the center direction of the deflector plate (1), and the spreading distance of the push holes (16) from top to bottom remains equal.

5. A hot extrusion die for producing I-shaped aluminum profiles according to claim 1, characterized in that: The bottom periphery of the welding chamber (21) is chamfered, and the depth of the welding chamber (21) is not greater than 5 mm.

6. The hot extrusion die for producing I-shaped aluminum profiles according to claim 1, wherein: A discharge hole (23) communicating with the cavity (22) is further provided at the bottom of the template (2). The discharge hole (23) diffuses outward from top to bottom and is integrally in a stepped shape.

7. A hot extrusion die for producing I-shaped aluminum profiles according to claim 1, characterized in that: The deflector plate (1) and the template (2) are tightly fitted with each other through fasteners to form a mold body.

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