Laser wire feeding welding device and welding robot

Abstract

The utility model discloses a laser wire feeding welding device and a welding robot, and belongs to the field of laser welding. The device comprises a mounting seat, a welding head and a wire feeding mechanism, the wire feeding mechanism is fixedly installed in the middle of the lower side face of the welding head. The side face of the installation base is an inclined face, and the inclined face inclines towards the bottom of the wire feeding mechanism. The multiple welding heads are installed on the different side faces of the installation base in an attached mode respectively. The robot is provided with the mechanical arm and the driving device for controlling the mechanical arm to act, the mechanical arm is in transmission connection with the mounting base, the robot can be suitable for workpieces of various weld joint structures and can be conveniently and rapidly adjusted to a proper welding angle, and the welding efficiency and the welding effect are improved.

Description

Technical Field

[0001] The utility model belongs to the field of laser welding, and more specifically, relates to a laser wire feeding welding device and a welding robot. Background Technique

[0002] Laser welding is an efficient and precise welding method that uses a laser beam with a high energy density as a heat source. Laser welding with a wire feeding mechanism is a commonly used welding method. It levels the welding wire through the wire feeding mechanism and continuously transports the welding wire to the laser head, and then uses the laser radiation energy to melt the welding wire and stack the wire on the workpiece surface to achieve welding.

[0003] For example, the patent document with the Chinese patent application number: CN202010546586.7 and the publication date: August 25, 2020, discloses a wire feeding laser welding machine, including a welding platform, a laser and a wire feeding mechanism. A servo motor for driving the rotation of the welding platform is installed at the bottom of the welding platform, and the workpiece is positioned on the welding platform by a fixture; the laser and the wire feeding mechanism are both installed on a bracket, and the laser head of the laser is located directly above the edge of the workpiece, and the laser emits modulated pulsed laser; the wire feeding mechanism can continuously feed the welding wire below the laser head, and the wire feeding tube of the wire feeding mechanism is movably installed on an adjusting mechanism, and the included angle between the wire feeding tube and the horizontal plane is an acute angle, and the adjusting mechanism can adjust the distance between the wire feeding tube and the laser head and the included angle between the wire feeding tube and the horizontal plane.

[0004] Another example is the patent document with the Chinese patent application number: CN202222256487.2 and the publication date: January 17, 2023, which discloses a laser welding single pendulum double wire feeding welding head, belonging to the field of laser welding equipment. It includes a hand-held single pendulum welding head, a double wire feeder, and a double wire feeding bracket. The double wire feeding bracket is movably installed below the hand-held single pendulum welding head, and the double wire feeder is connected to the double wire feeding bracket through a welding wire. Compared with the prior art: the double wire feeder of this single pendulum double wire feeding welding head can simultaneously transport two welding wires to the double wire feeding bracket, and fix the two welding wires to the front end of the hand-held single pendulum welding head through the double wire feeding bracket for welding, which can conveniently fill larger welds and improve the reliability and quality of the welded workpiece; secondly, the double wire feeding bracket can facilitate the adjustment of the wire feeding angle and the front and back positions of the welding wire by setting a wire feeding solid bracket and a wire feeding adjusting bracket that are hinged and slidingly connecting the bracket body to the wire feeding adjusting bracket.

[0005] However, in the above two solutions, the welding of the welding wire is carried out from a single side of the welding wire. This welding method makes it difficult to adjust to a suitable welding angle when welding some workpieces with narrow and irregularly shaped welds, because the relative direction of the welding head and the welding wire is fixed, which affects the welding efficiency and welding effect. Summary of the Invention

[0006] 1. Problems to be solved

[0007] In view of the problem that the relative direction between the welding head and the welding wire of the existing laser welding wire feeding device is relatively fixed, which makes it difficult to adjust to a suitable welding angle, the utility model provides a laser wire feeding welding device and a welding robot, which can be applicable to workpieces with various weld structures, and can be easily and quickly adjusted to a suitable welding angle, thereby improving welding efficiency and welding effect.

[0008] 2. Technical solution

[0009] To solve the above problems, the utility model adopts the following technical solutions.

[0010] A laser wire feeding welding device comprises a mounting seat, a welding head and a wire feeding mechanism; the wire feeding mechanism is fixedly mounted on the middle part of the lower side surface of the welding head; the side surface of the mounting seat is an inclined surface, and the inclined direction of the inclined surface is toward the bottom of the wire feeding mechanism; the welding head has multiple parts, which are respectively mounted on different sides of the mounting seat.

[0011] As a further improvement of the technical solution, it also includes a swing arm; one end of the swing arm is fixedly connected to the mounting seat, and the other end is transmission-connected to a driving mechanism that controls the movement of the swing arm.

[0012] As a further improvement of the technical solution, the swing arm includes a connecting arm and an adjusting arm, and the connecting parts of the connecting arm and the adjusting arm are provided with connecting holes arranged in a circumference, and the connecting arm and the adjusting arm are fixedly connected by bolts passing through the connecting holes.

[0013] As a further improvement of the technical solution, an illuminating lamp is installed on the adjusting arm.

[0014] As a further improvement of the technical solution, the lighting lamp is connected to the adjustment arm through a shaped metal hose.

[0015] As a further improvement of the technical solution, a connecting plate is fixedly mounted on the side of the mounting seat, and the welding head is fixedly mounted on the connecting plate.

[0016] As a further improvement of the technical solution, at least one row of mounting holes is provided on the connecting plate.

[0017] As a further improvement of the technical solution, a protective lens is installed on the welding head.

[0018] As a further improvement of the technical solution, the welding head is equipped with a shielding gas delivery pipeline, and the shielding gas delivery pipeline is externally connected to a shielding gas source.

[0019] A welding robot comprises a mechanical arm and a driving device for controlling the movement of the mechanical arm, wherein the mechanical arm is transmission-connected to the mounting seat.

[0020] 3. Beneficial effects

[0021] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0022] (1) For a laser wire feeding welding device of the present utility model, the wire feeding mechanism is fixedly installed in the middle of the lower side of the welding head, and multiple welding heads are fitted and installed on different sides of the mounting base. Along the inclined direction of the side of the mounting base, the welding stations of the welding heads are concentrated at the bottom of the wire feeding mechanism, forming a central wire feeding structure surrounded by multiple welding heads. Compared with a structure where the relative direction between a single welding head and the welding wire is relatively fixed, it can effectively adapt to various workpieces to be welded, conveniently and quickly adjust to a suitable welding angle, and improve the welding efficiency and welding effect;

[0023] (2) For a laser wire feeding welding device of the present utility model, the mounting base can move and rotate along with the movement of the swing arm by connecting the swing arm with the driving mechanism, thereby realizing the adjustment of the welding angle;

[0024] (3) For a laser wire feeding welding device of the present utility model, the connecting arm and the adjusting arm can realize the adjustment of the relative angle through the connecting holes arranged in a circular pattern, thereby expanding the angle adjustment range of the welding device;

[0025] (4) For a laser wire feeding welding device of the present utility model, an illuminating lamp is installed on the adjusting arm, which can realize the illumination of the welding station, facilitating the welding work of the staff. Further, the illuminating lamp can realize the adjustment of the illumination angle through the shaped metal hose, improving the convenience of use of the illuminating lamp;

[0026] (5) For a laser wire feeding welding device of the present utility model, at least one row of mounting holes is provided on the connecting plate. By installing the welding heads in different mounting holes, the position of the welding heads can be adjusted, facilitating the adjustment of the welding work;

[0027] (6) For a welding robot of the present utility model, by driving the above-mentioned welding device to work, it can effectively adapt to various workpieces to be welded, conveniently and quickly adjust to a suitable welding angle, and improve the welding efficiency and welding effect. Description of the drawings

[0028] Figure 1 It is a schematic structural diagram of the laser wire feeding welding device;

[0029] Figure 2 It is a schematic structural diagram of the welding head;

[0030] In the figure: 1. Mounting base; 11. Connecting plate; 2. Welding head; 21. Protective lens; 22. Protective gas delivery pipe; 3. Wire feeding mechanism; 4. Swing arm; 41. Connecting arm; 42. Adjusting arm; 43. Illuminating lamp. Detailed implementation manners

[0031] The exemplary embodiments of the present utility model are described in detail below. Although these exemplary embodiments are described in sufficient detail to enable those skilled in the art to implement the present utility model, it should be understood that other embodiments can be achieved and various changes can be made to the present utility model without departing from the spirit and scope of the present utility model. The following more detailed description of the embodiments of the present utility model is not intended to limit the scope of the claimed present utility model, but is merely for illustrative purposes and does not limit the description of the features and characteristics of the present utility model, to present the best mode of implementing the present utility model and to be sufficient to enable those skilled in the art to implement the present utility model. Therefore, the scope of the present utility model is only defined by the appended claims.

[0032] Embodiment 1

[0033] A laser wire feeding welding device feeds a welding wire to a welding station through a wire feeding mechanism and then performs welding through a laser welding head. The following describes its specific structure and technical effects in detail.

[0034] As Figure 1 and Figure 2 shown, the welding device includes a mounting base 1, a welding head 2, and a wire feeding mechanism 3. Among them, the wire feeding mechanism 3 is fixedly installed in the middle of the lower side surface of the welding head 2. The side surface of the mounting base 1 is an inclined surface, and the inclination direction of the inclined surface is towards the bottom of the wire feeding mechanism 3. There are multiple welding heads 2, which are respectively fitted and installed on different side surfaces of the mounting base 1.

[0035] In this embodiment, the wire feeding mechanism 3 can adopt an existing wire feeding device on the market, and its wire feeding port communicates with a channel penetrating the upper and lower end surfaces of the mounting base. The mounting base 1 has a cuboid structure, and its side surface is an inclined surface that gradually contracts towards the inside of the mounting base from top to bottom.

[0036] There are three welding heads 2, which are respectively fitted and installed on different side surfaces of the mounting base 1. Specifically, a connecting plate 11 is fixedly installed on each of the three side surfaces of the mounting base 1. The connecting plate 11 has an inclined surface and at least one row of mounting holes is provided on the inclined surface. The welding head 2 is fixedly fitted and installed on the connecting plate 11 through the mounting holes. On the basis of providing the connecting plate 11, by replacing the connecting plate 11 with an inclined surface having a different slope, the angle of the welding head 2 relative to the welding wire can be adjusted. And by installing the welding head 2 in different mounting holes, the position of the welding head 2 can be adjusted, facilitating the adjustment of the welding work.

[0037] One side of the mounting base 1 is provided with a swing arm 4. One end of the swing arm 4 is fixedly connected to the mounting base 1, and the other end is drivingly connected to a driving mechanism for controlling the movement of the swing arm 4. The swing arm 4 includes a connecting arm 41 and an adjusting arm 42. Corresponding connecting holes arranged in a circular pattern are formed at the connection between the connecting arm 41 and the adjusting arm 42. The connecting arm 41 and the adjusting arm 42 are fixedly connected by bolts passing through the connecting holes. By connecting the swing arm 4 to the driving mechanism, the mounting base 1 can move and rotate with the movement of the swing arm 4, thereby realizing the adjustment of the welding angle. The connecting arm 41 and the adjusting arm 42 can realize the adjustment of the relative angle between the two through the connecting holes arranged in a circular pattern, thereby expanding the angle adjustment range of the welding device.

[0038] In addition, a lighting lamp 43 is installed on the adjusting arm 42, which can realize the lighting of the welding station and facilitate the staff to carry out welding work. Further, the lighting lamp 43 is connected to the adjusting arm 42 through a shaped metal hose, which can realize the adjustment of the lighting angle and improve the convenience of use of the lighting lamp 43.

[0039] In this embodiment, the welding head adopts an existing laser welding head on the market, which is equipped with a protective lens 21 and a protective gas delivery pipe 22. The protective gas delivery pipe 22 is externally connected to a protective gas source, improving the safety of laser welding work.

[0040] In summary, for the laser wire feeding welding device of this embodiment, the wire feeding mechanism 3 is fixedly installed in the middle of the lower side of the welding head 1, and multiple welding heads 2 are fitted and installed on different sides of the mounting base 1. Along the inclined direction of the side of the mounting base 1, the welding stations of the welding heads 2 are concentrated at the bottom of the wire feeding mechanism 3, forming a central wire feeding structure surrounded by multiple welding heads. Compared with the structure where the relative direction between a single welding head and the welding wire is relatively fixed, it can effectively adapt to various workpieces to be welded, conveniently and quickly adjust to the appropriate welding angle, and improve the welding efficiency and welding effect.

[0041] Embodiment 2

[0042] A welding robot has a robotic arm and a driving device for controlling the movement of the robotic arm. The robotic arm is drivingly connected to the welding device of Embodiment 1. The specific connection position is the swing arm of the welding device, which can effectively adapt to various workpieces to be welded, conveniently and quickly adjust to the appropriate welding angle, and improve the welding efficiency and welding effect.

Claims

1. A laser wire feeding welding device, characterized in that: The invention comprises a mounting seat (1), a welding head (2) and a wire feeding mechanism (3); the wire feeding mechanism (3) is fixedly mounted on the middle part of the lower side surface of the welding head (2); the side surface of the mounting seat (1) is an inclined surface, and the inclined direction of the inclined surface is toward the bottom of the wire feeding mechanism (3); the welding head (2) has a plurality of heads, which are respectively mounted on different side surfaces of the mounting seat (1); It also includes a swing arm (4); one end of the swing arm (4) is fixedly connected to the mounting seat (1), and the other end is transmission-connected to a driving mechanism for controlling the movement of the swing arm (4); The swing arm (4) comprises a connecting arm (41) and an adjusting arm (42); connecting holes arranged in a circumference are correspondingly provided at the connecting portion of the connecting arm (41) and the adjusting arm (42); the connecting arm (41) and the adjusting arm (42) are fixedly connected by bolts passing through the connecting holes.

2. A laser wire feeding welding device according to claim 1, characterized in that: The adjusting arm (42) is provided with an illumination lamp (43).

3. A laser wire feeding welding device according to claim 2, characterized in that: The lighting lamp (43) is connected to the regulating arm (42) via a shaped metal hose.

4. A laser wire feeding welding device according to claim 1, characterized in that: A connecting plate (11) is fixedly mounted on the side surface of the mounting seat (1), and the welding head (2) is fixedly mounted on the connecting plate (11).

5. A laser wire feeding welding device according to claim 4, characterized in that: The connecting plate (11) is provided with at least one row of mounting holes.

6. A laser wire feeding welding device according to any one of claims 1 to 5, characterized in that: The welding head (2) is provided with a protective lens (21).

7. A laser wire feeding welding device according to any one of claims 1 to 5, characterized in that: The welding head (2) is equipped with a protective gas delivery pipeline (22), and the protective gas delivery pipeline (22) is externally connected to a protective gas source.

8. A welding robot having a mechanical arm and a driving device for controlling the movement of the mechanical arm, characterized in that: The mechanical arm is transmission-connected to the mounting base (1) described in any one of claims 1-7.

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