Modularized tool for bending heat pipe

Abstract

The invention discloses a heat pipe bending modular tool, which belongs to the technical field of heat pipe bending forming and comprises an upper tool, a lower tool and a modular tool group. The module tool set is composed of three annular sub-tools, and the arc face of the middle sub-tool is a bent pipe attaching face. The heat pipe bending modular tool provided by the invention can be quickly assembled into a set of heat pipe bending tool. And meanwhile, the pipe bending requirements of heat pipes with different sizes and pipe bending radiuses can be met on the premise that the use of the upper tool and the use of the lower tool are not changed by replacing the matching of different sub-tools. Due to high-adaptability combination and flexible matching assembly of the module tool set, the tool production cost can be reduced to the maximum extent.

Description

Technical Field

[0001] The invention relates to the technical field of heat pipe bending and forming, and in particular to a modular tooling for heat pipe bending. Background Art

[0002] Heat pipe technology is used in a variety of industries such as aerospace, military industry, and information technology due to its high thermal conductivity, low thermal resistance, and strong environmental adaptability. It is an important component in various heat dissipation systems. In the field of normal temperature heat pipes, "I"-shaped heat pipes are often used as heat conduction media, which have the advantages of high cost performance and high thermal conductivity. Among them, aluminum "I"-shaped normal temperature heat pipes are widely used due to their light weight and easy molding.

[0003] During the actual installation process, the "I"-shaped normal temperature heat pipe usually needs to be bent to meet the different requirements of the cold and heat source layout. The "I"-shaped normal temperature heat pipe is usually made of aluminum, so the heat pipe can be manually bent at room temperature. For the bending process with different pipe diameters, machining requirements, different bending angles and different bending radii, it is usually necessary to replace the entire set of tooling, which increases the cost of heat pipe bending.

[0004] Chinese patent CN222133088U discloses a pipe bending processing device for steel pipe fittings, including a mounting disc, a positioning stud is fixedly welded at the center of the top of the mounting disc, a U-shaped clamp is sleeved on the outside of the positioning stud, a bending disc is fixedly provided at the center of the positioning stud, a first bending groove is provided at the center of the outer surface of the bending disc, the bending disc is located between the inner walls of the U-shaped clamp, and a positioning nut is fixedly threaded at the top of the positioning stud, and the positioning nut contacts the top of the U-shaped clamp. When the utility model needs to bend the pipe, the steel pipe fitting is passed between the bending disc and the pushing disc, so that the two sides of the steel pipe fitting are respectively located in the first bending groove and the second bending groove, and one end of the steel pipe fitting is interlaced and connected with the limiting circular ring, and then the U-shaped clamp can be rotated by pushing the connecting handle, so that one side of the steel pipe fitting can be pushed by the pushing disc, because the limiting circular ring and the bending disc can limit the two sides of the cylinder pipe fitting. The bending structure is complex, and the bending process for different pipe diameters, machining requirements, different bending angles and different bending radii usually requires the replacement of a whole set of tooling.

[0005] Therefore, a modular pipe bending tool that can modularly disassemble the intermediate tooling group and reuse the upper and lower main molds, and a hot pipe bending device that can adapt to different shapes and bending radii is an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0006] In view of this, the present invention provides a modular tooling for heat pipe bending to solve the deficiencies in the prior art. The contents of the present invention are as follows: A modular tooling for bending heat pipes, the technical point of which is that it includes an upper tooling, a lower tooling, and a module tooling group fixed between the upper tooling and the lower tooling; the diameters of the upper tooling and the lower tooling are the same, and the diameter of the module tooling group is smaller than the diameters of the upper tooling and the lower tooling to form a bending groove for accommodating heat pipe profiles.

[0007] In order to better realize the above technical points, a modular tooling group in a modular tooling for heat pipe bending of the present invention includes a first sub-tooling, a second sub-tooling and a third sub-tooling from top to bottom.

[0008] In order to better realize the above technical points, in a modular tooling for heat pipe bending of the present invention, the lower surface of the upper tooling is in contact with the upper surface of the first sub-tooling, and the upper surface of the lower tooling is in contact with the lower surface of the third sub-tooling.

[0009] In order to better realize the above technical points, the combination of the upper tooling, the lower tooling and the module tooling group in the modular tooling of the heat pipe bending of the present invention uniformly opens screw holes of the same size, and is fixedly connected by screws during assembly.

[0010] In order to better realize the above technical points, the lower tooling opening in a modular tooling for heat pipe bending of the present invention is a threaded blind hole.

[0011] In order to better realize the above technical points, the cylindrical surface of the second sub-tool in the modular tool for bending heat pipes of the present invention is the heat pipe profile fitting surface.

[0012] In order to better realize the above technical points, the fitting surface in the modular tooling for heat pipe bending of the present invention can be a plane, an arc surface or other irregular surface.

[0013] In order to better realize the above technical points, the thickness of the first sub-tool and the third sub-tool in the modular tool for heat pipe bending of the present invention should be greater than the thickness of the heat pipe profile fin.

[0014] In order to better realize the above technical points, the material type of the module tooling group in the modular tooling of the heat pipe bending pipe of the present invention is one of aluminum alloy and stainless steel.

[0015] In order to better realize the above technical points, the material of the module tooling group in the modular tooling of the heat pipe bending pipe of the present invention is one of polytetrafluoroethylene and nylon. Compared with the prior art, the modular tooling for heat pipe bending of the present invention has the following beneficial effects: The present invention discloses a modular tooling for bending a heat pipe, comprising an upper tooling, a lower tooling and a module tooling group. The module tooling group is composed of three annular sub-toolings, wherein the arc surface of the middle sub-tooling is the bending fitting surface. By changing the thickness and diameter of the three annular sub-toolings in the module tooling group and fixing them together to form a module tooling group that matches the same bottom mold and upper mold, the requirements for bending heat pipe profiles with different cross-sectional sizes, bending radii and bending angles can be met. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a modular tooling structure for heat pipe bending of the present invention; Figure 2 It is a schematic diagram of the assembly cross section of a modular tooling for heat pipe bending of the present invention; Figure 3 It is a schematic structural diagram of the second sub-tool of the present invention; Figure 4 It is a schematic structural diagram of the first sub-tool and the third sub-tool of the present invention.

[0017] 1-upper tooling; 2-lower tooling; 3-module tooling group; 4-heat pipe profile; 301-first sub-tooling; 302-second sub-tooling; 303-third sub-tooling. DETAILED DESCRIPTION

[0018] The following describes several preferred embodiments of the present invention with reference to the drawings in the specification, so that the technical content is clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned in the text.

[0019] In the drawings, components with the same structure are indicated by the same numerical reference numerals, and components with similar structures or functions are indicated by similar numerical reference numerals. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present invention does not limit the size and thickness of each component. In order to make the illustration clearer, the thickness of the components is appropriately exaggerated in some places in the drawings.

[0020] like Figure 1 A modular tooling for heat pipe bending shown in the figure includes an upper tooling 1, a lower tooling 2, and a module tooling group 3 fixed between the upper tooling 1 and the lower tooling 2; the diameters of the upper tooling 1 and the lower tooling 2 are the same, and the diameter of the module tooling group 3 is smaller than the diameters of the upper tooling 1 and the lower tooling 2 to form a bending groove for accommodating a heat pipe profile 4. For example, when the thickness of the upper tooling 1 and the lower tooling 2 is selected to be 2 mm, it is suitable for bending an I-shaped φ15 heat pipe profile 4.

[0021] Furthermore, the module tooling set 3 of the present invention includes the following from top to bottom: Figure 3 The first sub-tool 301 shown in FIG. Figure 4The second sub-tool 302 shown and Figure 3 The third sub-tooling 303 shown is preferably a first sub-tooling 301 having a thickness of 2 mm, which is 1.5 mm higher than the fin height of the heat pipe profile (4); the thickness of the second sub-tooling 302 is adapted to the diameter of the heat pipe profile 4, and the tooling diameter corresponds to the bend diameter of the heat pipe profile (4).

[0022] Furthermore, the lower surface of the upper tooling 1 of the present invention is in contact with the upper surface of the first sub-tooling 301 , and the upper surface of the lower tooling 2 is in contact with the lower surface of the third sub-tooling 303 .

[0023] Further, such as Figure 2 The combination of the upper tooling 1, the lower tooling 2 and the module tooling group 3 of the present invention is uniformly provided with a through hole of diameter φ10, which is fixedly connected by screws during assembly. Preferably, all the toolings are connected by countersunk bolts of corresponding sizes; the hole of the lower tooling 2 of the present invention is a threaded blind hole.

[0024] Furthermore, the cylindrical surface of the second sub-tooling 302 of the present invention is the bonding surface of the heat pipe profile 4 .

[0025] Furthermore, the bonding surface of the present invention may be a plane, an arc surface or other irregular surfaces.

[0026] Furthermore, the thickness of the first sub-tool 301 and the third sub-tool 303 of the present invention should be greater than the thickness of the fin of the heat pipe profile 4 .

[0027] Furthermore, the material type of the module tooling set 3 of the present invention remains consistent, and is one of metal materials such as aluminum alloy and stainless steel, or one of high molecular polymers such as polytetrafluoroethylene and nylon.

[0028] Furthermore, the upper tooling (1), the lower tooling (2), and the module tooling group (3) assembled between the upper tooling (1) and the lower tooling (2) in the modular tooling for heat pipe bending of the present invention are made of aluminum alloy.

[0029] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present disclosure should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A modular tooling for heat pipe bending, characterized in that: The invention comprises an upper tooling (1), a lower tooling (2), and a module tooling group (3) fixed between the upper tooling (1) and the lower tooling (2); the diameters of the upper tooling (1) and the lower tooling (2) are the same, and the diameter of the module tooling group (3) is smaller than the diameters of the upper tooling (1) and the lower tooling (2), so as to form a bending groove for accommodating a heat pipe profile (4).

2. A heat pipe bending modular tooling according to claim 1, characterized in that: The module tooling set (3) comprises, from top to bottom, a first sub-tooling (301), a second sub-tooling (302) and a third sub-tooling (303).

3. A modular tooling for heat pipe bending according to claim 2, characterized in that: The lower surface of the upper tooling (1) is in contact with the upper surface of the first sub-tooling (301), and the upper surface of the lower tooling (2) is in contact with the lower surface of the third sub-tooling (303).

4. The heat pipe bending modular tooling according to claim 1, characterized in that: The assembly of the upper tooling (1), the lower tooling (2) and the module tooling group (3) is uniformly provided with screw holes of the same size and is fixedly connected by screws during assembly.

5. The heat pipe bending modular tooling according to claim 4, characterized in that: The opening of the lower tooling (2) is a threaded blind hole.

6. The heat pipe bending modular tooling according to claim 2, characterized in that: The cylindrical surface of the second sub-tool (302) is the fitting surface of the heat pipe profile (4).

7. The heat pipe bending modular tooling according to claim 6, characterized in that: The fitting surface may be a plane, an arc surface or other irregular surface.

8. The heat pipe bending modular tooling according to claim 2, characterized in that: The thickness of the first sub-tooling (301) and the third sub-tooling (303) should be greater than the thickness of the fins of the heat pipe profile (4).

9. The heat pipe bending modular tooling according to claim 2, characterized in that: The material type of the module tooling set (3) is one of aluminum alloy and stainless steel.

10. The heat pipe bending modular tooling according to claim 2, characterized in that: The material of the module tooling set (3) is one of polytetrafluoroethylene and nylon.

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