Variable heat conductivity coefficient substrate for additive manufacturing

Abstract

The utility model belongs to the technical field of additive manufacturing, and particularly relates to a variable heat conductivity coefficient base plate for additive manufacturing, which comprises a base plate body, a plurality of columnar cavities are arranged in the base plate body along the horizontal direction, the spaces among the cavities are the same, one end of each cavity is communicated with the outside, a core rod is detachably connected in each cavity, and the core rod is connected with the base plate body. The core rod and the cavity are mutually coupled, the section of the core rod is the same as the pattern in the cavity, one end of the core rod is connected with a pulling piece, the sum of the lengths of the core rod and the pulling piece after connection is not larger than the length of the cavity, and the pulling piece is used for driving the core rod to move and located at the open end of the cavity; according to the utility model, by replacing different materials, such as copper rods, ceramic rods, graphite rods and other materials with different heat conductivity coefficients, the requirements of different parts on substrates with different heat conductivity coefficients can be met.

Description

Technical Field

[0001] This utility model belongs to the field of additive manufacturing technology, and specifically relates to a substrate with variable thermal conductivity for additive manufacturing. Background Technology

[0002] Additive manufacturing, commonly known as 3D printing, is a manufacturing technology that integrates computer-aided design, material processing and forming technology. Based on digital model files, it uses software and CNC systems to deposit specialized metallic, non-metallic, and medical biomaterials layer by layer through methods such as extrusion, sintering, melting, photopolymerization, and spraying to create physical objects. Unlike traditional processing modes that involve removing, cutting, and assembling raw materials, it is a "bottom-up" manufacturing method that adds materials from scratch. This makes it possible to manufacture complex structural parts that were previously impossible due to the constraints of traditional manufacturing methods.

[0003] In the existing technology, due to cost and other factors, existing additive manufacturing substrates often use a single material such as iron substrate or titanium substrate. When additive manufacturing different materials, the thermal conductivity of a single substrate is fixed and cannot meet the needs of different materials. Utility Model Content

[0004] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a substrate with variable thermal conductivity for additive manufacturing, which can quickly and conveniently change the thermal conductivity of the substrate by adding a replaceable core rod inside, thereby solving the problems mentioned in the background art.

[0005] To achieve the above technical objectives, the technical solution adopted by this utility model is as follows:

[0006] A substrate for additive manufacturing of a variable thermal conductivity substrate includes a substrate body. Multiple columnar cavities are formed horizontally within the substrate body, with equal spacing between the cavities. One end of each cavity communicates with the outside. A mandrel is detachably connected to each cavity, and the mandrel is coupled to the cavity. The cross-section of the mandrel is identical to the shape within the cavity. One end of the mandrel is connected to a pulling member. The sum of the lengths of the mandrel and the pulling member after connection is not greater than the length of the cavity. The pulling member is used to move the mandrel and is located at the opening end of the cavity.

[0007] Furthermore, the cross-sectional shape of the cavity is circular, elliptical, polygonal, or straight groove.

[0008] Further specifying, the pulling element is a pull plate, a pull ring, or a pull rod.

[0009] Furthermore, a detachable connector is provided between the pulling member and the mandrel.

[0010] Further specifying, the connecting member is a threaded post that is fixedly connected to the pulling member, and one end of the mandrel has a threaded hole that mates with the threaded post.

[0011] Further specified, the connector is a V-shaped elastic block, the pulling member is disposed at both ends above the V-shaped elastic block, and a trapezoidal groove with a trapezoidal cross-section for accommodating the V-shaped elastic block is opened in the middle of one end of the mandrel. Limiting blocks are fixedly connected to both sides of the opening of the trapezoidal groove on the mandrel.

[0012] Furthermore, the distance between the two limiting blocks is greater than the distance between the lower ends of the V-shaped elastic block, and the distance between the outer sides of the two pulling members is less than the distance between the inner sides of the two limiting blocks.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] This invention can change the thermal conductivity of the substrate by replacing it with different materials, such as copper rods, ceramic rods, graphite rods, etc., which have different thermal conductivity coefficients, thereby meeting the needs of different parts for substrates with different thermal conductivity coefficients.

[0015] This invention facilitates the quick and easy installation of the mandrel and the substrate body by providing a pulling member at one end of the mandrel.

[0016] This invention features a detachable pull member and a mandrel, allowing the pull member to be replaced if damaged. The pull member and mandrel are connected by a threaded connection, ensuring a reliable connection and facilitating installation.

[0017] This utility model connects the V-shaped elastic block to the mandrel, making connection and disassembly convenient. When the V-shaped elastic block is inserted into the mandrel, both sides of the V-shaped elastic block are engaged in the trapezoidal groove. By pulling the V-shaped elastic block inward, the V-shaped elastic block can be removed from the trapezoidal groove of the mandrel. Attached Figure Description

[0018] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0019] Figure 1 This is a schematic diagram of the polygonal structure of the mandrel of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the mandrel with a straight groove in this utility model;

[0021] Figure 3 This is a schematic diagram of the circular core rod structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the substrate body of this utility model;

[0023] Figure 5 This is a schematic diagram of the disassembled structure of the substrate and the core rod of this utility model;

[0024] Figure 6 This is a cross-sectional view of the connection between the mandrel and the V-shaped elastic block of this utility model;

[0025] Figure 7 This is a schematic diagram of the structure of the pull component of this utility model;

[0026] Figure 8 This is a schematic diagram of the structure of the V-shaped elastic element of this utility model;

[0027] Figure 9 This is a schematic diagram of the structure of the mandrel of this utility model;

[0028] The symbols for the main components are explained below:

[0029] Substrate body 1, cavity 11;

[0030] 2. Core rod, 21. Pulling component, 22. Connecting component, 221. V-shaped elastic block, 222. Threaded column, 222. Trapezoidal groove, 23. Limiting block, 24. Detailed Implementation

[0031] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] like Figure 1-9 As shown, a substrate for additive manufacturing of a variable thermal conductivity substrate includes a substrate body 1. Multiple columnar cavities 11 are formed horizontally inside the substrate body 1. The spacing between the multiple cavities 11 is the same. One end of each cavity 11 is connected to the outside. A core rod 2 is detachably connected to each cavity 11. The core rod 2 is coupled to the cavity 11. The cross-section of the core rod 2 is the same as the pattern inside the cavity 11. One end of the core rod 2 is connected to a pulling member 21. The sum of the lengths of the core rod 2 and the pulling member 21 after connection is not greater than the length of the cavity 11. The pulling member 21 is used to move the core rod 2 and is located at the open end of the cavity 11.

[0033] Using the technical solution of this embodiment, the core rod 2 can be made of materials with different thermal conductivity, such as copper rods, ceramic rods, graphite rods, etc. When it is necessary to change the thermal conductivity of the substrate body 1, the core rod 2 of a different material is replaced inside the substrate body 1, thereby changing the thermal conductivity of the core rod 2 and meeting the requirements of different parts for substrates with different thermal conductivity. When the core rod 2 is a cylinder, the cavity 11 and the core rod 2 can be connected by a thread or a clearance fit. During normal use, the core rod 2 will not interact with the cavity 11. When the core rod 2 has other shapes, the cavity 11 and the core rod 2 are in a clearance fit. A pulling member 21 is provided at one end of the core rod 2 to provide a point of force for pulling it out. The length of the pulling member 21 after connection with the core rod 2 is no greater than the length of the cavity 11. Therefore, when the core rod 2 is located inside the substrate body 1, the end of the pulling member 21 will not exceed the plane of the substrate body 1. Preferably, the end of the pulling member 21 is flush with the end face of the substrate body 1. The pulling member 21 can also be located 0-5mm away from the end face of the cavity. Figure 1 The diagram shows the state in which the pull member 21 is flush with the end face of the substrate body 1. Figure 2 This is a schematic diagram showing the core rod 2 flush with the end face of the substrate body 1. The outer end of the pull member 21 can be connected to both sides of the substrate body 1 or only one end can be connected to the outside. When the core rod 2 is replaced, the core rod 2 is taken out from the opening end of the cavity 11. The pull member 21 can be directly fixed to the core rod 2 or can be detachably connected to the core rod 2 by means of threaded connection or snap-fit ​​connection.

[0034] Reference Figure 1-3 The cross-sectional shape of the cavity 11 is circular, elliptical, polygonal, or straight-groove. In this embodiment, the cavity 11 is a cylinder, and the shape of the core rod 2 is adapted to the shape of the cavity 11. The cross-sectional shape is preferably circular or polygonal, but it can also be other shapes.

[0035] The pulling component 21 can be a pull plate, pull ring, or pull rod. In this embodiment, the mandrel 2 is moved by the pulling component 21, making it easier to replace the mandrel.

[0036] Reference Figure 5 A detachable connector 22 is provided between the pulling member 21 and the core rod 2. In this embodiment, the detachable connection between the pulling member 21 and the core rod 2 is achieved through the connector 22.

[0037] Reference Figure 6 The connecting member 22 is a threaded post 222 that is fixedly connected to the pulling member 21. One end of the mandrel 2 has a threaded hole that mates with the threaded post 222. In this embodiment, the threaded post 222 is threadedly connected to the threaded hole in the mandrel. By rotating the threaded post 222 into the threaded hole of the mandrel 2, the mandrel 2 can be moved.

[0038] Reference Figure 6 The connector 22 is a V-shaped elastic block 221. The pulling member 21 is set at both ends above the V-shaped elastic block 221. A trapezoidal groove 23 with a trapezoidal cross section is opened in the middle of one end of the mandrel 2 to accommodate the V-shaped elastic block 221. Limiting blocks 24 are fixedly connected to both sides of the opening of the trapezoidal groove 23. In this embodiment, the lower end of the V-shaped elastic block 221 specifically refers to its small end, and the upper end refers to the upper end corresponding to the "V". The two ends of the V-shaped elastic block 221 are V-shaped openings. The pulling member 21 is located at the upper end of the V-shaped elastic block 221. The V-shaped elastic block 221 enters the trapezoidal groove 23 from the inside of the opening of the limiting block 24. The upper part of the V-shaped elastic block 221 is squeezed inward by the trapezoidal groove 23. When the V-shaped elastic block 221 is completely inserted into the trapezoidal groove 23, the V-shaped elastic block 221 is reset. The limiting block 24 blocks the two sides of the V-shaped elastic block 221. When the V-shaped elastic block 221 is squeezed inward by the pulling member 21, the V-shaped elastic block 221 can be taken out from the opening inside the limiting block 24.

[0039] Reference Figure 6 The distance between the two limiting blocks 24 is greater than the distance at the lower end of the V-shaped elastic block 221, and the distance between the outer sides of the two pulling members 21 is less than the distance between the inner sides of the two limiting blocks 24. In this embodiment, the dimensional relationship between the distance between the limiting blocks 24 and the V-shaped elastic block 221 is further defined.

[0040] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A method for additive manufacturing of a variable thermal conductivity substrate, comprising: The utility model relates to a substrate body (1) is opened with a plurality of columnar cavities (11) in the horizontal direction inside, the interval of a plurality of the cavity (11) is same, the one end of the cavity (11) is communicated with the outside, a plurality of the cavity (11) all can detachably connect with the core rod (2), the core rod (2) and the cavity (11) are mutually coupled, the section of the core rod (2) is same with the figure in the cavity (11), the one end of the core rod (2) is connected with the pulling member (21), the length of the core rod (2) and the pulling member (21) after connection is not greater than the length of the cavity (11), the pulling member (21) is used to drive the core rod (2) to move, and the pulling member (21) is located at the opening end of the cavity (11).

2. A variable thermal conductivity substrate for additive manufacturing according to claim 1, wherein: The cross-sectional shape of the cavity (11) is circular, oval, polygonal or straight slot.

3. A variable thermal conductivity substrate for additive manufacturing according to claim 1, wherein: The pulling member (21) is a pull plate, a pull ring or a pull rod.

4. A variable thermal conductivity substrate for additive manufacturing according to claim 2, wherein: A detachable connecting piece (22) is arranged between the pulling member (21) and the core rod (2).

5. A variable thermal conductivity substrate for additive manufacturing according to claim 4, wherein: The connecting piece (22) is a threaded column (222) fixedly connected with the pulling member (21), and one end of the core rod (2) is provided with a threaded hole matched with the threaded column (222).

6. A variable thermal conductivity substrate for additive manufacturing according to claim 4, wherein: The connecting piece (22) is a V-shaped elastic block (221), the pulling member (21) is arranged above both ends of the V-shaped elastic block (221), a trapezoidal groove (23) with a trapezoidal cross section is formed in the middle of one end of the core rod (2) to accommodate the V-shaped elastic block (221), and the core rod is fixedly connected with a limiting block (24) on both sides of the opening of the trapezoidal groove (23).

7. A variable thermal conductivity substrate for additive manufacturing according to claim 6, wherein: The distance between the two limiting blocks (24) is greater than the distance of the lower end of the V-shaped elastic block (221), and the distance between the outer sides of the two pulling members (21) is less than the distance between the inner sides of the two limiting blocks (24).

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