Conductive nozzle

Abstract

The utility model belongs to the field of additive manufacturing, and relates to a contact tube, which comprises a contact tube main body, a wire guide hole arranged along the axial direction of the contact tube main body, and a floating jacking assembly arranged in the contact tube main body, a wire is arranged in the wire guide hole and moves in the axial direction of the wire guide hole; and the floating jacking assembly acts on the side wall of the wire. The contact tube provided by the utility model has the advantages that the service life can be prolonged and the electric arc printing stability can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of additive manufacturing and relates to a conductive nozzle, and more particularly to a self-compensating conductive nozzle. Background Technology

[0002] Arc additive manufacturing utilizes an electric arc as a heat source to melt metal wire or powder, continuously transferring the molten metal as droplets along a predetermined path to form metal components. Compared to lasers and electron beams, arc additive manufacturing offers higher forming efficiency and lower material requirements, giving it a significant advantage in forming large-size, multi-dimensional, heterogeneous components. However, the conductive nozzles in arc printing equipment often suffer from the following problems: 1) prolonged contact and friction between the filament and the guide hole of the conductive nozzle during printing leads to severe wear of the guide hole; 2) worn guide holes cannot effectively contact the filament, resulting in an unstable arc and affecting printing quality. Utility Model Content

[0003] In order to solve the above-mentioned technical problems in the background art, the present invention provides a conductive tip that can extend service life and improve the stability of arc printing.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A conductive nozzle includes a conductive nozzle body and a guide wire hole arranged along the axial direction of the conductive nozzle body; characterized in that: the conductive nozzle further includes a floating clamping assembly disposed inside the conductive nozzle body; the wire is placed in the guide wire hole and moves along the axial direction of the guide wire hole; the floating clamping assembly acts on the side wall of the wire.

[0006] The above-mentioned floating clamping components are one or more sets. When there are multiple sets of floating clamping components, the multiple sets of floating clamping components are arranged sequentially from top to bottom along the axial direction of the conductive nozzle body and act on the side wall of the wire respectively. Alternatively, the multiple sets of floating clamping components are arranged along the circumference of the wire guide hole and act on the side wall of the wire respectively.

[0007] The aforementioned multiple sets of floating clamping components are evenly or non-evenly distributed along the axial direction of the conductive nozzle body from top to bottom and act on the side wall of the wire respectively; or, the multiple sets of floating clamping components are evenly or non-evenly distributed along the circumferential direction of the wire guide hole and act on the side wall of the wire respectively.

[0008] The aforementioned floating clamping assembly includes a working groove, a clamping block, and a clamping block drive; the working groove is disposed on the inner wall of the conductive nozzle body; the clamping block is placed in the working groove; the clamping block drive is connected to the clamping block and drives the clamping block to move radially along the guide wire hole.

[0009] The aforementioned clamping block drive component is a mechanical drive assembly or a hydraulic drive assembly.

[0010] When the aforementioned clamping block drive is a mechanical drive assembly, the mechanical drive assembly is placed in the working slot and connected to the clamping block; the mechanical drive assembly is a spring or a disc spring.

[0011] When the clamping block drive is a hydraulic drive assembly, the hydraulic drive assembly includes a pressure pump; a seal is provided between the clamping block and the working groove along the moving direction of the clamping block; the pressure pump supplies pressurized fluid to the working groove; the pressurized fluid acts on the end face of the clamping block and drives the clamping block to move radially along the guide wire hole.

[0012] The pressurized fluid mentioned above is either pressurized gas or pressurized oil.

[0013] The clamping blocks are in line contact or surface contact with the wire at the points where they are tangent.

[0014] The parts of the clamping block that come into contact with the wire are coated with an alloy wear-resistant layer.

[0015] The advantages of this utility model are:

[0016] This invention provides a conductive nozzle, comprising a conductive nozzle body, a guide wire hole arranged axially along the conductive nozzle body, and a floating clamping assembly disposed inside the conductive nozzle body; a wire is placed in the guide wire hole and moves axially along the guide wire hole; the floating clamping assembly acts on the side wall of the wire. This invention, through the floating clamping assembly, can maintain a lasting and effective contact between the wire and the conductive nozzle body, reducing the impact of wear on arc stability and extending the service life of the conductive nozzle. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the conductive tip provided by this utility model;

[0018] Figure 2 This is a cross-sectional view of the conductive tip provided by this utility model.

[0019] Figure 3 This is a top view of the conductive nozzle provided by this utility model.

[0020] in:

[0021] 1-Clamping block; 2-Disc spring; 3-Conductive nozzle body. Detailed Implementation

[0022] See Figure 1 as well as Figure 2This invention provides a conductive nozzle, comprising a conductive nozzle body 3, a guide wire hole arranged axially along the conductive nozzle body 3, and a floating clamping assembly disposed inside the conductive nozzle body 3; a wire is placed in the guide wire hole and moves axially along the guide wire hole; the floating clamping assembly acts on the side wall of the wire. Through the floating clamping assembly, the wire can maintain a lasting and effective contact with the conductive nozzle body 3, reducing the impact of wear on arc stability and extending the service life of the conductive nozzle.

[0023] For example, the floating clamping assembly used in this utility model is one or more sets. When there are multiple sets of floating clamping assemblies, the multiple sets of floating clamping assemblies are arranged sequentially from top to bottom along the axial direction of the conductive nozzle body 3 and act on the sidewall of the wire respectively, especially in a uniformly distributed or non-uniformly distributed manner. Alternatively, the multiple sets of floating clamping assemblies are arranged circumferentially along the wire guide hole and act on the sidewall of the wire respectively, especially in a uniformly distributed or non-uniformly distributed manner. For example, see Figure 3 Three sets of floating clamping assemblies can be used, and these three sets are arranged circumferentially along the guide wire hole. That is, they are evenly distributed circumferentially along the guide wire hole.

[0024] See Figure 2 The floating clamping assembly includes a working groove, a clamping block 1, and a clamping block drive. The working groove is disposed on the inner wall of the conductive nozzle body 3. The clamping block 1 is placed in the working groove. The clamping block drive is connected to the clamping block 1 and drives the clamping block 1 to move radially along the wire guide hole, ultimately clamping the wire. Exemplarily, the clamping block drive is a mechanical drive assembly or a hydraulic drive assembly. When the clamping block drive is a mechanical drive assembly, the mechanical drive assembly is placed in the working groove and connected to the clamping block 1; the mechanical drive assembly is a spring, a disc spring 2, or a spring plate. See also... Figure 2 Taking the disc spring 2 as an example, under the elastic force of the disc spring 2, the clamping block 1 can float back and forth along the radial direction of the wire guide hole, that is, move along the radial direction of the wire guide hole, and finally clamp the wire. Taking the mechanical drive assembly as an example, when the conductive nozzle provided by this utility model is working, the wire passes through the wire guide hole from top to bottom, and the clamping block 1 effectively contacts the wire, transmitting current to the wire; when the wire causes wear on the clamping block 1 after working for a period of time, under the elastic force of the disc spring 2, the clamping block 1 moves forward to compensate for the gap caused by wear, always maintaining effective contact between the conductive nozzle body 3 and the wire, ensuring stable current transmission, reducing the impact of wear on arc stability, and extending the service life of the conductive nozzle.

[0025] When the clamping block drive is a hydraulic drive assembly, the hydraulic drive assembly includes a pressure pump; a seal is provided between the clamping block 1 and the working groove along the moving direction of the clamping block 1; the pressure pump supplies pressurized fluid to the working groove; the pressurized fluid acts on the end face of the clamping block 1 and drives the clamping block 1 to move radially along the guide wire hole. For example, the pressurized fluid is pressurized air or pressurized oil.

[0026] The clamping block 1 used in this invention has either line contact or surface contact with the wire at the tangential point, with surface contact being preferred as it can act on a larger area of ​​the wire sidewall. Furthermore, to further reduce wear, the area of ​​the clamping block 1 in contact with the wire is coated with an alloy wear-resistant layer.

Claims

1. A conductive tip, comprising a conductive tip body (3) and a guide wire hole arranged axially along the conductive tip body (3); characterized in that: The conductive nozzle also includes a floating clamping assembly placed inside the conductive nozzle body (3); the wire is placed in the wire guide hole and moves along the axial direction of the wire guide hole; the floating clamping assembly acts on the side wall of the wire.

2. The conductive tip according to claim 1, characterized in that: The floating clamping assembly is one or more sets. When the floating clamping assembly is multiple sets, the multiple sets of floating clamping assemblies are arranged sequentially from top to bottom along the axial direction of the conductive nozzle body (3) and act on the side wall of the wire respectively. Alternatively, the multiple sets of floating clamping assemblies are arranged along the circumferential direction of the wire guide hole and act on the side wall of the wire respectively.

3. The conductive tip according to claim 2, characterized in that: The multiple sets of floating clamping components are evenly or non-evenly distributed along the axial direction of the conductive nozzle body (3) from top to bottom and act on the side wall of the wire respectively; or, the multiple sets of floating clamping components are evenly or non-evenly distributed along the circumferential direction of the wire guide hole and act on the side wall of the wire respectively.

4. The conductive tip according to claim 1, 2, or 3, characterized in that: The floating clamping assembly includes a working groove, a clamping block (1), and a clamping block drive; the working groove is disposed on the inner wall of the conductive nozzle body (3); the clamping block (1) is placed in the working groove; the clamping block drive is connected to the clamping block (1) and drives the clamping block (1) to move radially along the guide wire hole.

5. The conductive tip according to claim 4, characterized in that: The clamping block drive component is a mechanical drive assembly or a hydraulic drive assembly.

6. The conductive tip according to claim 5, characterized in that: When the clamping block drive is a mechanical drive assembly, the mechanical drive assembly is placed in the working slot and connected to the clamping block (1); the mechanical drive assembly is a spring or disc spring (2).

7. The conductive tip according to claim 5, characterized in that: When the clamping block drive is a hydraulic drive assembly, the hydraulic drive assembly includes a pressure pump; a seal is provided between the clamping block (1) and the working groove along the moving direction of the clamping block (1); the pressure pump supplies pressurized fluid to the working groove; the pressurized fluid acts on the end face of the clamping block (1) and drives the clamping block (1) to move radially along the guide wire hole.

8. The conductive tip according to claim 7, characterized in that: The pressurized fluid is pressurized gas or pressurized oil.

9. The conductive tip according to claim 5, characterized in that: The clamping block (1) is in line contact or surface contact with the part that is tangent to the wire.

10. The conductive tip according to claim 9, characterized in that: The clamping block (1) is coated with an alloy wear-resistant layer at the part that contacts the wire.

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