Hot extrusion die for producing 3C camera structural member by using 7075 aluminum alloy

Abstract

The utility model discloses a hot extrusion die for producing a 3C camera structural member by using 7075 aluminum alloy, which comprises a die body, the die body comprises a right die plate, a middle die plate and a hollow cutter, the right side surface of the right die plate is provided with a cavity, the 7075 aluminum alloy is extruded into the cavity through the right side to form an aluminum flow, the hollow cutter is connected with the right die plate, and the right side wall of the middle die plate is provided with the hollow cutter connected with the cavity. And a first discharging hole communicated with the empty knife is formed in the left side wall. By utilizing the principle that the specific pressure of backward extrusion is greater than that of forward extrusion, the extrusion force required by 7075 aluminum alloy is reduced, so that the speed of aluminum flow entering a cavity is higher, the flow speed is uniform and stable, the flowability is better, the extrusion speed is high, meanwhile, the resistance of the 7075 aluminum alloy entering the cavity is reduced due to the design of the fillet section, and the extrusion efficiency is improved. And the transverse length of the cavity is set to be 2-5mm, so that the die body can complete the forming of the 3C camera structural member only by a small extrusion force.

Description

Technical Field

[0001] The utility model specifically relates to a hot extrusion die for producing 3C camera structural parts by using 7075 aluminum alloy. Background Art

[0002] 3C cameras refer to cameras used in 3C electronic products (i.e. computers, communications and consumer electronics). These cameras are widely used in devices such as smartphones and tablets. They have high precision and complex internal structures, including multiple components such as FPC, sensors, lenses and sonic motors. 7075 aluminum alloy is a high-strength, heat-treatable forged alloy, mainly composed of zinc, magnesium, chromium and copper, with excellent mechanical properties and corrosion resistance;

[0003] At present, 7075 aluminum alloy can be used to produce aluminum profiles through hot extrusion dies, and the produced aluminum profiles are increasingly used in 3C cameras. Using 7075 aluminum alloy to manufacture the structural parts of 3C cameras can improve the mechanical properties and heat dissipation performance of 3C cameras, ensure the stability of 3C cameras for long-term use, and make 3C cameras have excellent impact resistance and durability, ensuring the capture of high-quality images;

[0004] Since 7075 aluminum alloy has high strength and hardness, it requires greater extrusion pressure and higher extrusion temperature during the extrusion process. As a result, the traditional hot extrusion die requires a large extrusion force when extruding 7075 aluminum alloy, resulting in slow extrusion speed of 7075 aluminum alloy and poor aluminum flow fluidity, which is not conducive to the production of 3C camera structural parts.

[0005] Therefore, it is necessary to invent a hot extrusion die for producing 3C camera structural parts using 7075 aluminum alloy to solve the above problems. Utility Model Content

[0006] (I) Purpose of the utility model

[0007] In order to solve the technical problems existing in the background technology, the utility model proposes a hot extrusion die for producing 3C camera structural parts using 7075 aluminum alloy. By utilizing the principle that the reverse extrusion pressure is greater than the forward extrusion pressure, the extrusion force required for the 7075 aluminum alloy is reduced, so that the speed at which the aluminum flow enters the cavity becomes faster, the flow rate becomes uniform and stable, the fluidity is better, and the extrusion speed is fast. At the same time, the design of the rounded corner section reduces the resistance of the 7075 aluminum alloy when entering the cavity, and the lateral length of the cavity is set to 2-5mm, so that the mold body only needs a small extrusion force to complete the molding of the 3C camera structural parts.

[0008] (II) Technical solution

[0009] In order to achieve the above purpose, the utility model provides the following technical solutions: a hot extrusion die for producing 3C camera structural parts using 7075 aluminum alloy,

[0010] The mold body comprises:

[0011] The right mold plate has a cavity on its right side, and the 7075 aluminum alloy is squeezed into the cavity through the right side to form an aluminum flow;

[0012] A middle template is connected to the right template, and a hollow knife connected to the cavity is provided on the right wall of the middle template, and a first discharge hole connected to the hollow knife is provided on the left wall;

[0013] The left template has a side wall provided with a second discharge hole connected to the empty knife;

[0014] Among them, a 0.3-0.6mm rounded corner section is set at the entrance of the cavity, and the lateral length of the cavity is set to 2-5mm, so that the aluminum flow can quickly pass through the cavity for hot extrusion forming of 3C camera structural parts.

[0015] Preferably, the radius of the corner section at the entrance of the cavity is set to 0.5 mm, and the transverse length of the cavity is set to 3 mm.

[0016] Preferably, the transverse length of the mold body is less than 60 mm.

[0017] Preferably, the outline of the empty knife is the same as the outline of the cavity, and the overall size of the empty knife spreads outward by 0.5-1.0 mm.

[0018] Preferably, the middle template is configured as an inverted cone, and the drop from right to left is configured to be 2-3 mm, and the inclination angle is less than 10 degrees.

[0019] Preferably, the lateral length of the left template is set to 10-15 mm.

[0020] Preferably, the lateral length of the right template is set to 10-15 mm.

[0021] Compared with the prior art, the above technical solution of the utility model has the following beneficial effects:

[0022] When the utility model is in use, the 7075 aluminum alloy is directly squeezed into the cavity through the right side opening of the cavity, the use of the welding chamber in the traditional hot extrusion mold is cancelled, and the principle that the reverse extrusion pressure is greater than the forward extrusion pressure is used, so the extrusion force required for the 7075 aluminum alloy is reduced, so that the speed at which the aluminum flow enters the cavity becomes faster, the flow rate becomes uniform and stable, the fluidity is better, and the extrusion speed is fast. At the same time, the design of the rounded section reduces the resistance of the 7075 aluminum alloy when entering the cavity, which reduces the extrusion force required for the 7075 aluminum alloy in disguised form, and the lateral length of the cavity is set to 2-5mm, so that the aluminum flow can quickly pass through the cavity, and only a small extrusion force is required to form the 3C camera structural parts, so that they can be smoothly produced. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0025] Figure 2 It is a three-dimensional diagram of the utility model;

[0026] Figure 3 It is a front cross-sectional view of the utility model;

[0027] Figure 4 It is a half-section view of the utility model.

[0028] Description of reference numerals:

[0029] 1 mold body, 2 right template, 3 cavity, 4 middle template, 5 empty knife, 6 first discharge hole, 7 left template, 8 second discharge hole, 9 fillet segment. DETAILED DESCRIPTION

[0030] 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.

[0031] The utility model provides Figure 1-4A hot extrusion die for producing 3C camera structural parts using 7075 aluminum alloy is shown, including a die body 1, wherein the die body 1 includes: a right die plate 2, a cavity 3 is provided on the right side surface of the die, and the 7075 aluminum alloy is squeezed into the cavity 3 through the right side to form an aluminum flow, a middle die plate 4 is connected to the right die plate 2, and an empty knife 5 connected to the cavity 3 is provided on the right side wall of the middle die plate 4, a first discharge hole 6 connected to the empty knife 5 is provided on the left side wall, and a left die plate 7 is provided on the side wall with a second discharge hole 8 connected to the empty knife 5, wherein a fillet section 9 of 0.3-0.6mm is provided at the entrance of the cavity 3, and the lateral length of the cavity 3 is set to 2-5mm. Specifically, the fillet section 9 at the entrance of the cavity 3 is set to 0.5mm, and the lateral length of the cavity 3 is set to 3mm, so that the aluminum flow can quickly pass through the cavity 3 for hot extrusion forming of 3C camera structural parts.

[0032] In one embodiment, the lateral length of the mold body 1 is less than 60 mm, so that the aluminum flow can quickly pass through the mold body 1, ensuring the stability of the fluidity of the aluminum flow, and ensuring the rigidity and stability of the mold body 1, thereby improving the production accuracy and consistency of the 3C camera.

[0033] In one embodiment, the contour of the empty knife 5 is the same as the contour of the cavity 3, and the overall size of the empty knife 5 spreads outward by 0.5-1.0 mm, which can reduce the resistance encountered by the 3C camera structural parts when passing through the cavity 3, so that the molded 3C camera structural parts can pass through the mold body 1 relatively freely, ensuring the smooth extrusion of the 3C camera structural parts. At the same time, it can ensure that the mold body 1 has sufficient strength and a long service life, so that the 3C camera structural parts can be mass-produced.

[0034] In one embodiment, the middle template 4 is set to an inverted cone shape, and the drop from right to left is set to 2-3 mm, and the inclination angle is less than 10 degrees, which is convenient for the assembly of the mold body 1 and meets the self-locking angle of the hot extrusion mold to ensure that the mold body 1 is tightly assembled.

[0035] In one embodiment, the lateral length of the left template 7 is set to 10-15 mm, and the lateral length of the right template 2 is set to 10-15 mm, which ensures the overall balance of the mold body 1, facilitates the disassembly and installation of the mold body 1, and makes the mold body 1 less likely to swing after being installed in the mold sleeve, and the position is more accurate.

[0036] The specific implementation mode is as follows: when the utility model is used, the 7075 aluminum alloy is directly squeezed into the cavity 3 through the right opening of the cavity 3, eliminating the use of the welding chamber in the traditional hot extrusion die, so that the aluminum flow formed by the 7075 aluminum alloy directly flows into the cavity 3, reducing the extrusion force required for the 7075 aluminum alloy, and greatly improving the extrusion speed;

[0037] The 7075 aluminum alloy directly squeezed into cavity 3 from the right side of cavity 3 utilizes the principle that the reverse extrusion pressure is greater than the forward extrusion pressure, so that the aluminum flow enters cavity 3 faster, the flow rate becomes uniform and stable, the fluidity is better, and the extrusion speed is fast, so that the 3C camera structural parts can be smoothly produced;

[0038] At the same time, the rounded corner section 9 at the entrance of the cavity 3 facilitates the 7075 aluminum alloy to enter the cavity 3, reduces the resistance of the aluminum flow, and further reduces the extrusion force required for the 7075 aluminum alloy;

[0039] The lateral length of the cavity 3 is set to 2-5 mm, so that the accuracy of the 3C camera structural part is guaranteed. At the same time, the aluminum flow can quickly pass through the cavity 3, so that the mold body 1 only needs a small extrusion force to form the 3C camera structural part;

[0040] When the aluminum flow passes through the cavity 3 and forms the 3C camera structure, it will enter the empty knife 5. The empty knife 5 is slightly larger than the cavity 3, so that the resistance of the 3C camera structure when passing through the cavity 3 becomes smaller and can be extruded smoothly. Furthermore, after passing through the first discharge hole 6 and the second discharge hole 8, the 3C camera structure can be formed and extruded through the mold body 1 to complete the production;

[0041] This embodiment specifically solves the problem in the prior art that when the current hot extrusion die is used to extrude 7075 aluminum alloy, a large extrusion force is required, resulting in a slow extrusion speed of the 7075 aluminum alloy and poor aluminum flow fluidity, which is not conducive to the production of 3C camera structural parts.

[0042] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions 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 3C camera structural parts using 7075 aluminum alloy, comprising a die body (1), characterized in that: The mold body (1) comprises: The right mold plate (2) has a mold cavity (3) on its right side, and the 7075 aluminum alloy is squeezed into the mold cavity (3) through the right side to form an aluminum flow; A middle template (4) is connected to the right template (2), and a hollow knife (5) connected to the mold cavity (3) is provided on the right side wall of the middle template (4), and a first discharge hole (6) connected to the hollow knife (5) is provided on the left side wall; The left template (7) has a side wall provided with a second discharge hole (8) connected to the empty knife (5); The cavity (3) is provided with a 0.3-0.6 mm rounded corner section (9) at the entrance, and the lateral length of the cavity (3) is set to 2-5 mm, which is used for hot extrusion molding of 3C camera structural parts.

2. According to claim 1, a hot extrusion die for producing 3C camera structural parts using 7075 aluminum alloy is characterized in that: The radius of the rounded corner section (9) at the entrance of the cavity (3) is set to 0.5 mm, and the transverse length of the cavity (3) is set to 3 mm.

3. According to claim 1, a hot extrusion die for producing 3C camera structural parts using 7075 aluminum alloy is characterized in that: The lateral length of the mold body (1) is less than 60 mm.

4. The hot extrusion die for producing 3C camera structural parts using 7075 aluminum alloy according to claim 1, characterized in that: The outline of the empty knife (5) is the same as the outline of the cavity (3), and the overall size of the empty knife (5) spreads outward by 0.5-1.0 mm.

5. The hot extrusion die for producing 3C camera structural parts using 7075 aluminum alloy according to claim 1, characterized in that: The middle template (4) is configured to be in an inverted cone shape, and the drop from right to left is configured to be 2-3 mm, with an inclination angle of less than 10 degrees.

6. The hot extrusion die for producing 3C camera structural parts using 7075 aluminum alloy according to claim 1, characterized in that: The lateral length of the left template (7) is set to 10-15 mm.

7. The hot extrusion die for producing 3C camera structural parts using 7075 aluminum alloy according to claim 1, characterized in that: The lateral length of the right template (2) is set to 10-15 mm.

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