Handheld laser plasma composite welding gun

Abstract

The utility model discloses a handheld laser plasma composite welding gun, relates to the technical field of welding equipment, and aims to solve the problems that the existing composite welding equipment is complicated in structure and cannot be applied to a manual welding scene, the handheld laser plasma composite welding gun comprises a laser welding gun, a plasma arc welding gun and a jet head, and the plasma arc welding gun is slidably connected to the top of the laser welding gun in the longitudinal direction; the plasma arc welding gun and the laser welding gun are limited through a positioning mechanism; the laser welding gun and the plasma arc welding gun are coaxially output in the same vertical direction, meanwhile, the gas spraying head is used for spraying protective gas, and the composite welding effect of laser welding and plasma arc welding is achieved in a handheld mode. According to the laser plasma arc hybrid welding device, miniaturization and usability of the laser plasma arc hybrid welding device are achieved, accurate alignment and stability of the laser welding gun and the plasma arc welding gun are achieved by designing the positioning mechanism, and the precision and welding quality of laser plasma hybrid welding are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, in particular to a handheld laser plasma composite welding gun. Background Art

[0002] Laser plasma hybrid welding is a high energy density heat source welding technology that combines laser and plasma arc, and is suitable for welding a variety of metal materials.

[0003] The preheating effect of the plasma arc can increase the absorption rate of the weldment to the laser. The laser also has the function of compressing and guiding the plasma arc, so that the plasma arc gathers to the heat action area of ​​the laser. Unlike laser-arc heat source hybrid welding, in laser plasma arc hybrid welding, the plasma is the heat source, which absorbs the laser photon energy and transfers it to the weldment, which in turn improves the utilization rate of the laser energy. In addition, high-frequency and high-voltage current is only required when the arc is started, and the plasma arc stabilization electrode is not exposed to metal vapor.

[0004] Coaxial laser hybrid welding forms a high-energy-density heat source by coaxially outputting the laser beam and plasma arc. The laser provides high-energy-density deep-penetration welding, while the plasma arc increases the laser absorption rate and improves the weld structure and properties through preheating and post-heating.

[0005] This composite method combines the advantages of laser and arc, overcomes the disadvantages of high residual stress and many porosity defects in single laser welding, and also improves the efficiency of plasma arc welding and the control of thermal deformation of workpieces. It is widely used in the following fields:

[0006] Butt welding: suitable for connecting plates, with good welding quality, small heat input and not easy to deform;

[0007] Lap welding: commonly used in automobile body-in-white welding, laser plasma hybrid welding can effectively melt the edges and corners of the lap weld plate to form a reliable connection;

[0008] Overlap welding: Overlap welding of two plates, laser beam and arc welding act simultaneously in the same weld area, suitable for welding complex welds;

[0009] Other applications: such as power batteries, aerospace and other fields, suitable for welding of high-reflective materials, with fast welding speed and high weld quality.

[0010] It has the advantages of fast welding speed, small heat input, small welding deformation and high welding quality.

[0011] Since laser plasma arc hybrid welding combines two welding methods, its structure is relatively complex, which limits its wide application. Currently, it can only be applied to large welding robots and cannot be used in manual welding scenarios.

[0012] Therefore, the present application provides a handheld laser plasma composite welding gun to meet the needs. Utility Model Content

[0013] The purpose of this application is to provide a handheld laser plasma composite welding gun that combines laser welding with plasma arc welding, simplifies its structure, and enhances its practicality in manual welding application scenarios.

[0014] To achieve the above purpose, the present application provides the following technical solution: a handheld laser plasma composite welding gun, comprising:

[0015] A laser welding gun, wherein a handle is provided at the bottom of the rear end of the laser welding gun, a gun barrel is horizontally provided at the front of the laser welding gun, and a horizontal gun head is coaxially provided at the front end of the gun barrel;

[0016] A plasma arc welding gun, wherein a downwardly inclined gun head is provided at the front end of the plasma arc welding gun, the axis of the downwardly inclined gun head and the axis of the horizontal gun head are located in the same vertical plane, the plasma arc welding gun is slidably connected to the top of the laser welding gun in the longitudinal direction, and the plasma arc welding gun and the laser welding gun are limited by a positioning mechanism;

[0017] The jet head is hinged to the laser welding gun, and the jet head is located below the gun barrel and in front of the handle, and the jet direction of the jet head is located in the same vertical plane as the axis of the horizontal gun head.

[0018] Preferably, a guide seat is provided on the top of the laser welding gun, and the guide seat is a T-shaped bar. A guide groove is provided on the bottom of the plasma arc welding gun, and the guide groove is adapted to and slidably connected to the guide seat.

[0019] Preferably, the positioning mechanism includes a positioning buckle and a positioning plate, the positioning plate is provided on one side of the plasma arc welding gun, a positioning groove is provided on one side of the laser welding gun, the positioning plate is slidably connected in the positioning groove, a positioning screw hole is provided on one side of the laser welding gun, the positioning buckle is threadedly connected in the positioning screw hole, the positioning buckle corresponds to the position of the positioning plate, and the positioning buckle can limit the positioning plate.

[0020] Preferably, a transparent longitudinal groove is provided on the positioning plate, the longitudinal groove is parallel to the gun barrel, the positioning screw hole is provided in the positioning groove, and the position of the positioning screw hole corresponds to that of the longitudinal groove.

[0021] Preferably, a positioning bolt is inserted into the positioning buckle, and the positioning bolt is threadedly connected to the positioning screw hole. A positioning surface is provided on the outer side of the positioning plate, and an anti-slip tooth surface is provided on the positioning surface. An orientation block and positioning teeth are provided on the inward side of the positioning buckle, and the orientation block is slidably connected in the longitudinal groove, and the positioning teeth are adapted to the positioning surface.

[0022] Preferably, it is characterized in that: a mounting seat is provided at the bottom of the downwardly inclined gun head, a sliding groove is provided on the bottom surface of the mounting seat, and the sliding groove is adapted to and slidably connected with the gun barrel.

[0023] Preferably, a connecting seat is provided at the bottom of the middle section of the laser welding gun, and the connecting seat is hinged to the nozzle through an adapter. The friction force adjusted by bolts is used to limit the connection between the connecting seat and the adapter, and between the adapter and the nozzle.

[0024] Preferably, a connecting block is provided on the top of the jet head, an adjusting slot is provided on the connecting block, the end of the adapter is hinged to the connecting block by bolts, and the bolts at the end of the adapter are slidably connected in the adjusting slot.

[0025] In summary, the technical effects and advantages of the utility model are:

[0026] The utility model designs the coaxial output of the laser welding gun and the plasma arc welding gun in the same vertical direction, and is equipped with a nozzle to spray protective gas, so as to realize the composite welding effect of laser welding and plasma arc welding in a handheld manner, and achieves the miniaturization and ease of use of the laser plasma arc composite welding equipment, which is beneficial to improving the manual welding effect, promoting the replacement of existing manual welding equipment, making the manual welding process faster and more accurate, and enhancing practicality. It is suitable for plate connections in different scenarios, such as butt welding, lap welding, stack welding, etc., and can also be used for welding high-reflective materials.

[0027] The utility model realizes accurate alignment and stability of the laser welding gun and the plasma arc welding gun by designing a positioning mechanism, improves the accuracy and welding quality of laser plasma composite welding, realizes movement and positioning by sliding connection, and at the same time, the positioning screw hole arranged on the side of the laser welding gun is connected to the positioning buckle by a thread, thereby ensuring the stable combination of the laser welding gun and the plasma arc welding gun, ensuring that the laser beam and the plasma arc act on the weld accurately at the same time, and realizing efficient composite welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0030] Figure 2 This is a schematic diagram of the structure of the laser welding gun of the utility model;

[0031] Figure 3 This is a schematic diagram of the overall structure of a plasma arc welding gun of the utility model;

[0032] Figure 4 It is a structural schematic diagram of the positioning buckle of the utility model.

[0033] In the figure: 1. laser welding gun; 2. jet nozzle; 3. plasma arc welding gun; 4. adapter; 5. positioning buckle; 6. positioning bolt; 10. barrel; 11. connecting seat; 12. guide seat; 13. positioning groove; 14. positioning screw hole; 20. connecting block; 30. assembly seat; 31. slide groove; 32. guide groove; 33. positioning plate; 34. longitudinal groove; 35. positioning surface; 50. orientation block; 51. positioning tooth. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Example: Reference Figure 1-4 The handheld laser plasma composite welding gun shown comprises a laser welding gun 1, a plasma arc welding gun 3 and an air jet head 2. A handle is provided at the bottom of the rear end of the laser welding gun 1, a gun barrel 10 is horizontally provided at the front of the laser welding gun 1, and a horizontal gun head is coaxially provided at the front end of the gun barrel 10; a downwardly inclined gun head is provided at the front end of the plasma arc welding gun 3, and the axis of the downwardly inclined gun head and the axis of the horizontal gun head are located in the same vertical plane, the plasma arc welding gun 3 is longitudinally slidably connected to the top of the laser welding gun 1, and the plasma arc welding gun 3 and the laser welding gun 1 are limited by a positioning mechanism; the air jet head 2 is hinged to the laser welding gun 1, and the air jet head 2 is located below the gun barrel 10 and in front of the handle, and the spraying direction of the air jet head 2 and the axis of the horizontal gun head are located in the same vertical plane.

[0036] As an implementation method in this embodiment, in order to achieve the purpose of slidably adjusting the plasma arc welding gun 3 and maintaining its stability, as shown in FIG. Figures 1 to 3 As shown, a guide seat 12 is provided on the top of the laser welding gun 1, and the guide seat 12 is a T-shaped bar. A guide groove 32 is provided on the bottom of the plasma arc welding gun 3, and the guide groove 32 is adapted to and slidably connected with the guide seat 12.

[0037] As an implementation method in this embodiment, in order to facilitate the positioning of the plasma arc welding gun 3, as shown in FIG. Figures 1 to 4As shown, the positioning mechanism includes a positioning buckle 5 and a positioning plate 33. A positioning plate 33 is provided on one side of the plasma arc welding gun 3, and a positioning groove 13 is provided on one side of the laser welding gun 1. The positioning plate 33 is slidably connected in the positioning groove 13. A positioning screw hole 14 is provided on one side of the laser welding gun 1. The positioning buckle 5 is threadedly connected in the positioning screw hole 14. The positions of the positioning buckle 5 and the positioning plate 33 correspond, and the positioning buckle 5 can limit the positioning plate 33.

[0038] As an implementation method in this embodiment, Figures 1 to 4 As shown, a transparent longitudinal groove 34 is provided on the positioning plate 33 , and the longitudinal groove 34 is parallel to the gun barrel 10 . A positioning screw hole 14 is provided in the positioning groove 13 , and the position of the positioning screw hole 14 corresponds to that of the longitudinal groove 34 .

[0039] As an implementation method in this embodiment, in order to enhance the limiting stability of the plasma arc welding gun 3, as Figures 1 to 4 As shown, a positioning bolt 6 is inserted into the positioning buckle 5, and the positioning bolt 6 is threadedly connected to the positioning screw hole 14. A positioning surface 35 is provided on the outer side of the positioning plate 33, and an anti-slip tooth surface is provided on the positioning surface 35. An orientation block 50 and a positioning tooth 51 are provided on the inner side of the positioning buckle 5. The orientation block 50 is slidably connected in the longitudinal groove 34, and the positioning tooth 51 is adapted to the positioning surface 35.

[0040] As an implementation method in this embodiment, in order to enhance the stability of the plasma arc welding gun 3 during welding, as shown in FIG. Figures 1 to 3 As shown, a mounting seat 30 is provided at the bottom of the downwardly inclined gun head, and a slide groove 31 is provided on the bottom surface of the mounting seat 30 . The slide groove 31 is adapted to and slidably connected with the gun barrel 10 .

[0041] As an implementation method in this embodiment, in order to facilitate the adjustment of the position and direction of the spray head 2, as shown in FIG. Figure 1 As shown, a connecting seat 11 is provided at the bottom of the middle section of the laser welding gun 1, and the connecting seat 11 is hinged to the nozzle 2 through the adapter 4. The friction force adjusted by bolts is used to limit the connection between the connecting seat 11 and the adapter 4, and between the adapter 4 and the nozzle 2.

[0042] As an implementation method in this embodiment, in order to increase the range of motion of the jet head 2, as shown in FIG. Figure 1 As shown, a connecting block 20 is provided on the top of the jet head 2, and an adjusting groove is provided on the connecting block 20. The end of the adapter 4 is hinged to the connecting block 20 by bolts, and the bolts at the end of the adapter 4 are slidably connected in the adjusting groove.

[0043] The practical working principle of the present invention is as follows: when performing composite welding with laser plasma arc, the laser welding gun 1 and the plasma arc welding gun 3 are both in working state, the intersection of the spray direction of the plasma arc welding gun 3 and the path of the laser is the welding position, and the nozzle 2 sprays protective gas toward the welding position; during the welding process, when the position of the plasma arc welding gun 3 needs to be adjusted according to different welding requirements, the positioning bolt 6 is rotated to move it outward from the positioning screw hole 14, and the positioning buckle 5 is released from the positioning plate 33. Then, the plasma arc welding gun 3 can be moved back and forth along the barrel 10 to a suitable position, and then the positioning bolt 6 is tightened to make the positioning teeth 51 on the positioning buckle 5 mesh with the anti-slip tooth surface on the positioning surface 35, so that the plasma arc welding gun 3 is fixed in the limit position on the laser welding gun 1, and adjusted at this position. During the process, the guide groove 32 slides on the guide seat 12, and the slide groove 31 at the bottom of the assembly seat 30 slides along the barrel 10 to ensure the stable movement of the plasma arc welding gun 3, and the positioning plate 33 slides in the positioning groove 13, and the orientation block 50 slides along the longitudinal groove 34 to stabilize the angle of the positioning tooth 51 so as to engage with the positioning surface 35; after adjusting the plasma arc welding gun 3, the position and direction of the nozzle 2 are adjusted so that the nozzle direction of the nozzle 2 is toward the welding position. In this process, the connecting seat 11 clamps the adapter 4, and the adapter 4 clamps the connecting block 20 to limit the nozzle 2. The clamping position of the adapter 4 and the connecting block 20 can also be adjusted as needed to make the bolt at the end of the adapter 4 slide in the adjustment groove on the connecting block 20.

[0044] The electromechanical connection involved in the present utility model is a common means used by those skilled in the art, and technical inspiration can be obtained through a limited number of tests, which belongs to common knowledge.

[0045] Components not described in detail herein are prior art.

[0046] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. Handheld laser plasma composite welding gun, characterized in that: include: A laser welding gun (1), wherein a handle is provided at the bottom of the rear end of the laser welding gun (1), a gun barrel (10) is horizontally provided at the front of the laser welding gun (1), and a horizontal gun head is coaxially provided at the front end of the gun barrel (10); A plasma arc welding gun (3), wherein a downwardly inclined gun head is provided at the front end of the plasma arc welding gun (3), the axis of the downwardly inclined gun head and the axis of the horizontal gun head are located in the same vertical plane, the plasma arc welding gun (3) is slidably connected to the top of the laser welding gun (1) in the longitudinal direction, and the plasma arc welding gun (3) and the laser welding gun (1) are limited by a positioning mechanism; An air jet head (2), the air jet head (2) being hinged to the laser welding gun (1), and the air jet head (2) being located below the gun barrel (10) and in front of the handle, and the jetting direction of the air jet head (2) and the axis of the horizontal gun head being located in the same vertical plane.

2. The handheld laser plasma hybrid welding gun according to claim 1, characterized in that: A guide seat (12) is provided at the top of the laser welding gun (1), the guide seat (12) being a T-shaped bar, and a guide groove (32) is provided at the bottom of the plasma arc welding gun (3), the guide groove (32) being adapted to and slidably connected to the guide seat (12).

3. The handheld laser plasma hybrid welding gun according to claim 2, characterized in that: The positioning mechanism comprises a positioning buckle (5) and a positioning plate (33); the positioning plate (33) is provided on one side of the plasma arc welding gun (3); a positioning groove (13) is provided on one side of the laser welding gun (1); the positioning plate (33) is slidably connected in the positioning groove (13); a positioning screw hole (14) is provided on one side of the laser welding gun (1); the positioning buckle (5) is threadedly connected in the positioning screw hole (14); the positioning buckle (5) corresponds to the position of the positioning plate (33); and the positioning buckle (5) can limit the positioning plate (33).

4. The handheld laser plasma hybrid welding gun according to claim 3 is characterized in that: The positioning plate (33) is provided with a transparent longitudinal groove (34), the longitudinal groove (34) is parallel to the gun barrel (10), and the positioning groove (13) is provided with the positioning screw hole (14), and the position of the positioning screw hole (14) corresponds to that of the longitudinal groove (34).

5. The handheld laser plasma hybrid welding gun according to claim 4, characterized in that: A positioning bolt (6) is inserted into the positioning buckle (5), and the positioning bolt (6) is threadedly connected to the positioning screw hole (14). A positioning surface (35) is provided on the outer side of the positioning plate (33), and an anti-slip tooth surface is provided on the positioning surface (35). An orientation block (50) and a positioning tooth (51) are provided on the inner side of the positioning buckle (5), and the orientation block (50) is slidably connected in the longitudinal groove (34), and the positioning tooth (51) is matched with the positioning surface (35).

6. The handheld laser plasma hybrid welding gun according to claim 1, characterized in that: An assembly seat (30) is provided at the bottom of the downwardly inclined gun head, and a slide groove (31) is provided on the bottom surface of the assembly seat (30). The slide groove (31) is adapted to and slidably connected to the gun barrel (10).

7. The handheld laser plasma hybrid welding gun according to claim 1, characterized in that: A connecting seat (11) is provided at the bottom of the middle section of the laser welding gun (1); the connecting seat (11) is hingedly connected to the nozzle head (2) via an adapter (4); and the connection seat (11) and the adapter (4), as well as the adapter (4) and the nozzle head (2) are both limited by friction force adjusted by bolts.

8. The handheld laser plasma hybrid welding gun according to claim 7, characterized in that: A connecting block (20) is provided on the top of the jet head (2), an adjusting slot is provided on the connecting block (20), the end of the adapter (4) is hingedly connected to the connecting block (20) via bolts, and the bolts at the end of the adapter (4) are slidably connected in the adjusting slot.

Images