Center wire feeding laser cladding device

Abstract

The utility model belongs to welding technical field especially for center wire feeding laser cladding device, including the cladding head main part, the inside middle position of cladding head main part is provided with the central passage, the inside fixed connection of central passage has the wire tube, the inside of the upper end of cladding head main part is provided with the light channel no.

Description

Technical Field

[0001] This utility model belongs to the field of welding technology, specifically relating to a center-feed laser cladding device. Background Technology

[0002] In modern industrial manufacturing, especially in the metal processing and machinery manufacturing industries, laser welding technology has attracted much attention due to its high precision, high efficiency, and excellent welding quality. This technology uses a high-energy laser beam as a heat source to locally heat and melt the workpiece, while simultaneously cooling and solidifying it together with added filler material (welding wire) to form a new weld, thereby achieving the repair, strengthening, or joining of the workpiece surface. Laser wire-fed welding, with its high welding efficiency, small heat-affected zone, high weld strength, and good flexibility, is now widely used in automotive manufacturing, aerospace manufacturing, and engineering machinery industries.

[0003] Currently, laser cladding technology is limited by the structural design of the welding head, that is, the laser emitter emits laser in a straight line from top to bottom. It is mostly used for cladding the outer walls of shaft parts such as rollers and piston rods, and is not convenient for cladding the inner walls of workpieces such as pipes and cylinders, so its use is not good. Utility Model Content

[0004] To address the aforementioned problems in the existing technology, this utility model provides a center-feed laser cladding device. By changing the transmission direction of the optical path, the vertical height of the cladding head can be reduced, making it suitable for cladding the inner holes of workpieces. Furthermore, by adopting a spiral-shaped cooling water channel for water cooling, the cooling effect is better, facilitating the use of the cladding head.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a center-feeding laser cladding device, comprising a cladding head body, wherein a central channel is provided in the middle of the interior of the cladding head body, and a wire tube is fixedly connected inside the central channel;

[0006] The upper end of the weld overlay head body has an optical path 1, and the upper part of the bend of the optical path 1 has a groove 1. A light reflector 1 is fixedly connected inside the groove 1. The lower end of the weld overlay head body has an optical path 2, and the upper part of the bend of the optical path 2 has a groove 2. A light reflector 2 is fixedly connected inside the groove 2.

[0007] The interior of the weld head body is provided with a spiral cooling water channel. The bottom rear end of the spiral cooling water channel is provided with a water inlet, and the bottom end of the water inlet is fixedly connected to a water inlet pipe. The upper front end of the spiral cooling water channel is provided with a water outlet, and the upper end of the water outlet is fixedly connected to a water outlet pipe.

[0008] As a preferred technical solution of the center wire feeding laser cladding device of this utility model, the main body of the cladding head has an "L" shaped structure.

[0009] As a preferred technical solution of the center wire feeding laser cladding device of this utility model, both optical channels one and two are filled with positive pressure protective gases such as nitrogen or argon.

[0010] As a preferred technical solution of the central wire feeding laser cladding device of this utility model, the central axes of the first optical path, the second optical path, and the front section of the wire tube converge at point "P" at the front end of the cladding head body.

[0011] As a preferred technical solution for the center wire feeding laser cladding device of this utility model, only one of the optical channels one and two can be set up.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model, through the setting of the L-shaped welding head body, optical path reflector and non-linear optical path, can change the transmission direction of the optical path to reduce the vertical height of the welding head, and can be applied to the welding of the inner hole of the workpiece.

[0014] 2. This utility model achieves water cooling of the weld overlay head body by setting up a spiral cooling water channel inside the body. The internal spiral cooling water channel has a better water cooling effect, which facilitates the use of the weld overlay head. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the main body of the weld overlay head of this utility model;

[0018] Figure 3 This is a partial structural diagram of the spiral cooling water channel of this utility model.

[0019] In the diagram: 1. Welding head body; 2. Central channel; 3. Wire guide tube; 4. Water inlet pipe; 5. Water outlet pipe; 6. Light channel one; 7. Groove one; 8. Light reflector one; 9. Light channel two; 10. Groove two; 11. Light reflector two; 12. Spiral cooling water channel; 13. Water inlet; 14. Water outlet. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example

[0022] Please see Figure 1-3 The present invention provides the following technical solution: a center-feeding laser cladding device, including a cladding head body 1, and the cladding head body 1 is an "L" shaped structure. A central channel 2 is provided in the middle position inside the cladding head body 1, and a wire tube 3 is fixedly connected inside the central channel 2.

[0023] Furthermore, refer to Figure 1 and Figure 2 As shown, a light path 6 is provided inside the upper end of the welding head body 1. A groove 7 is provided above the bend of the light path 6. A light reflector 8 is fixedly connected inside the groove 7. A light path 9 is provided inside the lower end of the welding head body 1. A groove 10 is provided above the bend of the light path 9. A light reflector 11 is fixedly connected inside the groove 10. Both the light path 6 and the light path 9 are filled with positive pressure protective gas such as nitrogen or argon. The central axis of the front section of the light path 6, the light path 9, and the wire tube 3 converges at point "P" at the front end of the welding head body 1. Only one of the light path 6 or the light path 9 can be provided. The light reflector is a reflective lens with a surface coating. With the positive pressure protective gas such as nitrogen or argon, the molten pool formed at the melting point of the workpiece can be covered to protect the molten pool area from oxidation.

[0024] In this embodiment: By setting up the L-shaped welding head body 1 and the optical path reflector and non-linear optical path, the transmission direction of the optical path can be changed to reduce the vertical height of the welding head, which is applicable to the welding of the inner hole of the workpiece.

[0025] Furthermore, refer to Figure 1 , Figure 2 and Figure 3 As shown, a spiral cooling water channel 12 is provided inside the main body 1 of the weld overlay head. A water inlet 13 is provided at the bottom of the rear end of the spiral cooling water channel 12. A water inlet pipe 4 is fixedly connected to the bottom end of the water inlet 13. A water outlet 14 is provided at the upper front end of the spiral cooling water channel 12. A water outlet pipe 5 is fixedly connected to the upper end of the water outlet 14. The water inlet 13 and the water inlet pipe 4 are used to connect the water inlet end of the spiral cooling water channel 12 with the external cooling water input pipeline. The water outlet 14 and the water outlet pipe 5 are used to connect the water outlet end of the spiral cooling water channel 12 with the external cooling water output pipeline.

[0026] In this embodiment: the present invention can achieve water cooling treatment of the welding head body 1 by setting the spiral cooling water channel 12 inside the welding head body 1. The internal spiral cooling water channel has a better water cooling effect, so as to facilitate the use of the welding head.

[0027] The usage process and working principle of this utility model are as follows: A laser emits dual laser beams, which enter through optical channels 6 and 9 respectively. Positive pressure protective gases such as nitrogen or argon can be introduced through optical channels 6 and 9 and then output. At the turning point between optical channels 6 and 9, the beams are reflected by optical reflector 8 or optical reflector 11 and output, converging at point P. A wire can enter and exit through the wire guide tube 3, converging with the beam at point P. The welding head is then inserted into the workpiece, and the welding head is adjusted. The height of the laser welding head is adjusted so that point P at the intersection is on the inner surface of the workpiece for laser welding. During the welding process, the positive pressure protective gas such as nitrogen or argon can cover the molten pool formed at the melting point of the workpiece to protect the molten pool area from oxidation. Cooling water is input into the spiral cooling water channel 12 through the water inlet pipe 4 and the water inlet 13, and output through the water outlet 14 and the water outlet pipe 5. This cycle can be repeated to cool the weld head with water so that it can be used for welding.

[0028] In addition, all content not described in detail in this embodiment falls within the scope of existing technology and common knowledge.

[0029] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A center-feed laser cladding device, characterized in that: It includes a weld overlay head body (1), and a central channel (2) is provided in the middle of the interior of the weld overlay head body (1). A wire guide tube (3) is fixedly connected inside the central channel (2). The upper end of the weld overlay head body (1) is provided with a light path (6), and a groove (7) is provided at the upper part of the turning point of the light path (6). A light reflector (8) is fixedly connected inside the groove (7). The lower end of the weld overlay head body (1) is provided with a light path (9), and a groove (10) is provided at the upper part of the turning point of the light path (9). A light reflector (11) is fixedly connected inside the groove (10). The interior of the weld head body (1) is provided with a spiral cooling water channel (12). The bottom of the rear end of the spiral cooling water channel (12) is provided with a water inlet (13). The bottom end of the water inlet (13) is fixedly connected with a water inlet pipe (4). The upper part of the front end of the spiral cooling water channel (12) is provided with a water outlet (14). The upper end of the water outlet (14) is fixedly connected with a water outlet pipe (5).

2. The center-feed laser welding apparatus according to claim 1, characterized in that: The main body (1) of the weld head is an "L" shaped structure.

3. The center-feed laser welding apparatus according to claim 1, characterized in that: Both optical channels one (6) and optical channel two (9) are filled with positive pressure protective gases such as nitrogen or argon.

4. The center-feed laser welding apparatus according to claim 1, characterized in that: The central axes of the front sections of the first (6), second (9), and wire tube (3) converge at point "P" at the front end of the main body of the weld head (1).

5. The center-feed laser welding apparatus according to claim 1, characterized in that: Only one of the light channel one (6) and light channel two (9) can be set up.

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