High-precision adjustment-free aluminum extrusion coating die

Abstract

The utility model provides a high-precision adjustment-free aluminum extrusion coating die which comprises a male die and a female die, the male die and the female die are independently arranged and are parallel to each other, a certain gap is reserved between the male die and the female die, a gap channel between the male die and the female die is a die stripping position, and the gap between the male die and the female die is the thickness of an aluminum sheath. One end of the die body is provided with a die nozzle, the other end of the die body is fixedly connected with the base, a section opening is formed in one side, close to the die nozzle, of the die body of the male die, and in the aluminum sheath manufacturing process, the size of an upper side runner is increased through the section opening formed in one side of the die body, so that the thickness of the upper end aluminum sheath is increased; the consistency of the thickness of the aluminum sheath at the upper end and the overall thickness of the aluminum sheath is guaranteed, the eccentricity of the aluminum sheath is reduced, and the purpose of mold adjustment-free is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mold manufacturing, and in particular relates to a high-precision adjustment-free aluminum extrusion coating mold. Background Art

[0002] Aluminum continuous extrusion coating technology is widely used in the production of aluminum sheaths for railway signal cables, high-voltage power cables, ultra-high-voltage power cables and submarine cables.

[0003] The traditional aluminum extrusion coating die is cumbersome to adjust the thickness of the aluminum sheath, and it is necessary to use a lead wire to repeatedly test the gap between the punch and the die. In addition, due to the flow channel of the extrusion cavity, the thickness of the upper and lower ends of the produced aluminum sheath is inconsistent, that is, the lower end of the aluminum sheath is thick and the upper end is thin, and the difference between the thinnest point and the thickest point is at least 0.2mm. Taking the aluminum sheathed railway signal cable as an example, the standard TB / T 2476-2017 requires that the thickness of the aluminum sheath is not less than 1.2mm. In actual production, the thinnest point of the aluminum sheath is 1.21mm, the thickest point is 1.43mm, and the eccentricity is 8.4%. The precision of the produced aluminum sheath is low, which is not conducive to the control of production costs. Utility Model Content

[0004] The utility model aims to provide a high-precision adjustment-free aluminum extrusion coating die to overcome the technical problems of low precision and high eccentricity of aluminum sheaths produced by existing aluminum extrusion coating dies.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A high-precision adjustment-free aluminum extrusion coating die, comprising an independently arranged male die and a female die, wherein the male die and the female die are arranged in parallel;

[0007] The male mold comprises a die mouth, a die body and a base. A cross-section opening is provided on one side of the die body of the male mold close to the die mouth, and the bottom surface of the die body is connected to the base.

[0008] Furthermore, the die mouth, die body and base of the male die are an integrated structure.

[0009] Furthermore, through holes are provided at the center of the mold body and the base.

[0010] Furthermore, the side wall of the die body close to the die nozzle is an inclined wall.

[0011] Furthermore, the depth and opening angle of the cross-sectional opening are set according to the size of the die nozzle.

[0012] Furthermore, the size of the die nozzle is φ12 mm, the depth of the cross-sectional opening is 3 mm, and the opening and closing angle is 60°.

[0013] Furthermore, the size of the die nozzle is φ19 mm, the depth of the cross-sectional opening is 2.5 mm, and the opening and closing angle is 50°.

[0014] Furthermore, the size of the die nozzle is φ22 mm, the depth of the cross-sectional opening is 2 mm, and the opening and closing angle is 45°.

[0015] Compared with the prior art, the utility model has the following beneficial technical effects:

[0016] The utility model provides a high-precision adjustment-free aluminum extrusion coating die, comprising a male die and a female die, which are independently arranged with a gap between them, and the gap between them is the thickness of the aluminum sheath. By opening a cross-sectional opening on the side of the die body of the male die close to the die mouth, the volume of the side flow channel of the male die body is increased, so that the speed of aluminum liquid entering the gap between the male die and the female die through the side flow channels and the lower side flow channels of the die body is the same, thereby ensuring the consistency of the overall thickness of the aluminum sheath, reducing the eccentricity of the aluminum sheath, and achieving the purpose of freeing the mold from adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a high-precision, adjustment-free aluminum extrusion coating die in an embodiment of the utility model.

[0018] Figure 2 This is a structural diagram of the high-precision, adjustment-free aluminum extrusion coating die punch in an embodiment of the utility model.

[0019] Figure 3 a is a side view of the convex structure of the high-precision adjustment-free aluminum extrusion coating die in the embodiment of the utility model.

[0020] Figure 3 b is a top view of the convex structure of the high-precision adjustment-free aluminum extrusion coating die in the embodiment of the utility model.

[0021] Figure 4 This is the working principle diagram of the high-precision adjustment-free aluminum extrusion coating die in the embodiment of the utility model

[0022] In the figure, 1. punch; 2. die; 3. die nozzle; 4. die body; 5. base; 6. lower runner; 7. aluminum material feed port; 8. upper runner. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0024] In one embodiment of the utility model, a high-precision adjustment-free aluminum extrusion coating die is provided, such as Figure 1 As shown, it includes a punch 1 and a die 2. The punch 1 and the die 2 are independently arranged, parallel to each other and with a certain gap between them. The gap channel between the punch 1 and the die 2 is the mold outlet, and the gap between the two is the thickness of the aluminum sheath. Figure 2 As shown, the punch 1 includes a die mouth 3, a die body 4 and a base 5. The die mouth 3 is opened at one end of the die body 4, and the other end of the die body 4 is connected and fixed to the base 5. A cross-sectional opening is opened on one side of the die body 4 of the punch 1 close to the die mouth 3. During the manufacturing process of the aluminum sheath, the volume of the upper side flow channel 8 is increased by the cross-sectional opening opened on one side of the die body 4, thereby increasing the thickness of the upper aluminum sheath, ensuring the consistency of the thickness of the upper aluminum sheath and the overall thickness of the aluminum sheath, reducing the eccentricity of the aluminum sheath, and achieving the purpose of free adjustment of the mold.

[0025] Specifically, Figure 3 As shown in Figures a and b, the die mouth 3, die body 4 and base 5 of the punch 1 adopt an integrated structure, and a through hole is opened in the center of the die body 4 and the base 5. The channel formed by the through hole is used to place the core wire and wrap the core wire during the aluminum sheath molding process.

[0026] The side of the die body 4 close to the die nozzle 3 is a sloping wall structure to facilitate the reflux of the aluminum liquid. The depth and opening angle of the cross-sectional opening on one side of the die body 4 are set according to the size of the die nozzle 3, wherein the outer diameter size of the die nozzle 3 is the outer diameter inner hole size of the aluminum sheath to be produced.

[0027] How it works

[0028] like Figure 4 As shown, after the aluminum liquid enters from the aluminum material feed end 7, it enters the flow channel between the punch 1 and the die 2. Since the flow channel 8 on the upper side of the die body 4 is far away from the aluminum material feed end 7, the volume of the flow channel 8 on the upper side of the punch 1 and the die body 4 is increased through the cross-sectional opening opened on one side of the die body 4, so that the aluminum liquid enters the gap between the punch 1 and the die 2 at the same speed in the upper and lower flow channels 6 of the die body 4, thereby ensuring the consistency of the overall thickness of the aluminum sheath.

[0029] Example 1

[0030] A high-precision adjustment-free aluminum extrusion coating die, comprising a male die 1 and a female die 2, wherein the male die 1 and the female die 2 are independently arranged, parallel to each other and with a certain gap therebetween, the gap channel between the male die 1 and the female die 2 is the die exit, and the gap therebetween is the thickness of the aluminum sheath, wherein the male die 1 comprises a die mouth 3, a die body 4 and a base 5, one end of the die body 4 is provided with a die mouth 3, and the other end of the die body 4 is connected and fixed to the base 5, a cross-sectional opening is provided on one side of the die body 4 of the male die 1 close to the die mouth 3, the die mouth 3, the die body 4 and the base 5 of the male die 1 adopt an integrated structure, a through hole is provided in the center of the die body 4 and the base 5, the channel formed by the through hole is used to place a core wire, and the core wire is wrapped during the aluminum sheath forming process;

[0031] The size of the die nozzle 3 is φ12 mm, the depth of the cross-sectional opening is 3 mm, and the opening and closing angle is 60°.

[0032] Example 2

[0033] A high-precision adjustment-free aluminum extrusion coating die, comprising a male die 1 and a female die 2, wherein the male die 1 and the female die 2 are independently arranged, parallel to each other and with a certain gap therebetween, the gap channel between the male die 1 and the female die 2 is the die exit, and the gap therebetween is the thickness of the aluminum sheath, wherein the male die 1 comprises a die mouth 3, a die body 4 and a base 5, one end of the die body 4 is provided with a die mouth 3, and the other end of the die body 4 is connected and fixed to the base 5, a cross-sectional opening is provided on one side of the die body 4 of the male die 1 close to the die mouth 3, the die mouth 3, the die body 4 and the base 5 of the male die 1 adopt an integrated structure, a through hole is provided in the center of the die body 4 and the base 5, the channel formed by the through hole is used to place a core wire, and the core wire is wrapped during the aluminum sheath forming process;

[0034] The size of the die nozzle 3 is φ19 mm, the depth of the cross-sectional opening is 2.5 mm, and the opening and closing angle is 50°.

[0035] Example 3

[0036] A high-precision adjustment-free aluminum extrusion coating die, comprising a male die 1 and a female die 2, wherein the male die 1 and the female die 2 are independently arranged, parallel to each other and with a certain gap therebetween, the gap channel between the male die 1 and the female die 2 is the die exit, and the gap therebetween is the thickness of the aluminum sheath, wherein the male die 1 comprises a die mouth 3, a die body 4 and a base 5, one end of the die body 4 is provided with a die mouth 3, and the other end of the die body 4 is connected and fixed to the base 5, a cross-sectional opening is provided on one side of the die body 4 of the male die 1 close to the die mouth 3, the die mouth 3, the die body 4 and the base 5 of the male die 1 adopt an integrated structure, a through hole is provided in the center of the die body 4 and the base 5, the channel formed by the through hole is used to place a core wire, and the core wire is wrapped during the aluminum sheath forming process;

[0037] The size of the die nozzle 3 is φ22 mm, the depth of the cross-sectional opening is 2 mm, and the opening and closing angle is 45°.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A high-precision adjustment-free aluminum extrusion coating die, characterized in that: It comprises a male mold (1) and a female mold (2) which are independently arranged, wherein the male mold (1) and the female mold (2) are arranged in parallel; The male mold (1) comprises a die mouth (3), a die body (4) and a base (5); a cross-sectional opening is provided on one side of the die body (4) of the male mold (1) close to the die mouth (3); and the bottom surface of the die body (4) is connected to the base (5); The side wall of the die body (4) close to the die mouth (3) is an inclined wall, and the depth and opening angle of the cross-sectional opening are set according to the size of the die mouth (3).

2. A high-precision adjustment-free aluminum extrusion coating die according to claim 1, characterized in that: The die mouth (3), die body (4) and base (5) of the male die (1) are an integrated structure.

3. A high-precision adjustment-free aluminum extrusion coating die according to claim 1 or 2, characterized in that: The mold body (4) and the base (5) are both provided with through holes at their center positions.

4. The high-precision adjustment-free aluminum extrusion coating die according to claim 1, characterized in that: The die nozzle (3) has a size of φ12 mm, a depth of the cross-sectional opening of 3 mm, and an opening and closing angle of 60°.

5. The high-precision adjustment-free aluminum extrusion coating die according to claim 1, characterized in that: The die nozzle (3) has a size of φ19 mm, a depth of the cross-sectional opening of 2.5 mm, and an opening and closing angle of 50°.

6. The high-precision adjustment-free aluminum extrusion coating die according to claim 1, characterized in that: The die nozzle (3) has a size of φ22 mm, a depth of the cross-sectional opening of 2 mm, and an opening and closing angle of 45°.

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