Mechanical arm for laser welding

Abstract

The utility model relates to the field of laser welding, in particular to a mechanical arm for laser welding, which comprises a mechanical arm base, a swing arm mechanism is arranged above the mechanical arm base, a welding gun is mounted at the end of the swing arm mechanism, a protection mechanism is arranged below the welding gun, and the protection mechanism comprises a fan and a conical air duct. An air guide pipe is installed in the conical air cylinder, air distribution pipes are installed on the lower surface of the air guide pipe in an array mode, an air pipe plug is arranged at the position, located on the outer side of the conical air cylinder, of the end of the air guide pipe, and a corrugated connector pipe is arranged at the position, corresponding to the air pipe plug, of the lower end of the draught fan. And an expansion plug is mounted at the end part of the corrugated joint pipe. And under the action of the air guide pipe and the air distribution pipe, the position where air blows the welding head is achieved, so that certain airflow is generated on the outer side of the welding head, the airflow can protect the welding head in the welding process, and generated welding slag is blown to the outer side.

Description

Technical Field

[0001] The utility model relates to the field of laser welding, in particular to a mechanical arm for laser welding. Background Art

[0002] Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. It has the advantages of high efficiency, precision, and ease of use. Today, laser welding has been widely used in various industries, such as electronic parts, automobile manufacturing, aerospace and other industrial manufacturing fields. Welding robots can replace manual labor to complete welding independently. Now the application of welding robots is becoming more and more extensive, which is a major trend in the future development of the welding manufacturing industry. It can improve welding quality, productivity and labor costs. The emergence of welding robots is a boon to the manufacturing industry, and as time goes by, welding robots will gain more applications and recognition and become a general trend in the future.

[0003] However, due to the spatter pollution and damage to the lens caused by laser welding, the welding head is damaged, resulting in increased usage costs. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a robotic arm for laser welding, which solves the problems mentioned in the above background.

[0005] The utility model provides the following technical solution: a robotic arm for laser welding, comprising a robotic arm base, a swing arm mechanism is arranged above the robotic arm base, a welding gun is installed at the end of the swing arm mechanism, a protective mechanism is arranged below the welding gun, the protective mechanism comprises: a fan, a conical wind tube, an air guide pipe is installed inside the conical wind tube, an air distribution pipe is installed in an array on the lower surface of the air guide pipe, an air duct plug is arranged at the end of the air guide pipe located outside the conical wind tube, a corrugated joint pipe is arranged at the lower end of the fan corresponding to the position of the air duct plug, and an expansion plug is installed at the end of the corrugated joint pipe.

[0006] As a further solution of the utility model: a mounting groove is provided on the lower surface of the welding gun, a threaded joint is provided on the outer side of the upper end of the conical air cylinder, and a welding head is installed on the lower surface of the welding gun inside the conical air cylinder.

[0007] As a further solution of the utility model: the swing arm mechanism includes: a first swing arm, a second swing arm, a third swing arm, and a mechanical claw.

[0008] As a further solution of the utility model: the branch air duct is connected with the air guide duct, and the air duct plug is connected with the air guide duct.

[0009] As a further solution of the present invention: the second swing arm is movably connected to the first swing arm and the third swing arm.

[0010] As a further solution of the utility model: the conical air cylinder is meshed and connected with the mounting groove through the threaded joint.

[0011] As a further solution of the utility model: the corrugated joint pipe is clamped with the air duct plug through the expansion plug.

[0012] As a further solution of the utility model: the corrugated joint pipe is connected to the fan.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The conical air cylinder is installed in the installation groove provided on the lower surface of the welding gun through the threaded joint. The conical air cylinder can be freely disassembled and installed, so it is convenient for replacement. At the same time, the conical air cylinder can intercept the splashing welding slag and reduce the splashing of welding slag.

[0015] The air guide duct and the air distribution duct blow the wind to the position of the welding head, so that a certain airflow is generated on the outside of the welding head. The airflow protects the welding head during the welding process, so that the welding slag is blown to the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a robotic arm for laser welding;

[0017] Figure 2 It is a schematic diagram of the structure of the protection mechanism in the robot arm for laser welding;

[0018] Figure 3 This is a schematic diagram of the interior of a conical air cylinder in a robotic arm for laser welding;

[0019] Figure 4 This is an enlarged view of the joint position of the conical air cylinder in the robot arm for laser welding;

[0020] Figure 5 This is a top view of the entire device in the laser welding robot arm.

[0021] In the figure: 1. Robot arm base; 2. First swing arm; 3. Second swing arm; 4. Third swing arm; 5. Robot claw; 6. Welding gun; 7. Welding head; 8. Protective mechanism; 801. Fan; 802. Mounting groove; 803. Corrugated joint pipe; 804. Conical air cylinder; 805. Threaded joint; 806. Duct plug; 807. Air guide duct; 808. Air distribution duct; 809. Expansion plug. DETAILED DESCRIPTION

[0022] 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.

[0023] like Figure 1-5 As shown, this embodiment provides a robot arm for laser welding, including a robot arm base 1, a swing arm mechanism is arranged above the robot arm base 1, a welding gun 6 is installed at the end of the swing arm mechanism, and a protection mechanism 8 is arranged below the welding gun 6. The protection mechanism 8 includes: a fan 801, a conical air cylinder 804, an air guide 807 is installed inside the conical air cylinder 804, and a branch air duct 808 is installed on the lower surface of the air guide duct 807. The branch air duct 808 and the air guide duct 807 are connected. The end of the air duct 807 is located on the outside of the conical wind tube 804 and is provided with an air duct plug 806. The air duct plug 806 and the air duct 807 are connected. A corrugated joint pipe 803 is provided at the lower end of the fan 801 corresponding to the position of the air duct plug 806. The corrugated joint pipe 803 and the fan 801 are connected. An expansion plug 809 is installed at the end of the corrugated joint pipe 803. The corrugated joint pipe 803 is clamped with the air duct plug 806 through the expansion plug 809.

[0024] like Figure 2-5 As shown, in this embodiment, a mounting groove 802 is provided on the lower surface of the welding gun 6, a threaded joint 805 is provided on the outer side of the upper end of the conical air cylinder 804, and the conical air cylinder 804 is meshed and connected with the mounting groove 802 through the threaded joint 805. A welding head 7 is installed on the lower surface of the welding gun 6, which is located on the inner side of the conical air cylinder 804. The swing arm mechanism includes: a first swing arm 2, a second swing arm 3, a third swing arm 4, and a mechanical claw 5. The second swing arm 3 is movably connected to the first swing arm 2 and the third swing arm 4.

[0025] The working principle of the utility model is as follows: when in use, the conical air cylinder 804 is installed in the installation groove 802 provided on the lower surface of the welding gun 6 by meshing through the threaded joint 805, and the corrugated joint pipe 803 below the fan 801 is pulled out, and the expansion plug 809 at the end of the corrugated joint pipe 803 is inserted into the air duct plug 806 as a whole. Then, through the mutual activities of the first swing arm 2, the second swing arm 3, and the third swing arm 4, the mechanical claw 5 at the end is controlled to drive the welding head 7 on the lower surface of the welding gun 6 to continue welding the position to be welded, and at the same time, the fan 801 is used to blow air, so that the wind flows through the corrugated joint pipe 803 to the inside of the air duct plug 806, and the wind is blown to the position of the welding head 7 under the action of the air guide pipe 807 and the air distribution pipe 808, so that a certain airflow is generated on the outside of the welding head 7, and the airflow will protect the welding head 7 during the welding process, so that the welding slag is blown to the outside.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A robotic arm for laser welding, comprising a robotic arm base (1), characterized in that: An arm swing mechanism is arranged above the mechanical arm base (1), a welding gun (6) is installed at the end of the arm swing mechanism, a protection mechanism (8) is arranged below the welding gun (6), and the protection mechanism (8) comprises: a fan (801) and a conical wind tube (804), an air guide pipe (807) is installed inside the conical wind tube (804), a branch air pipe (808) is installed in an array on the lower surface of the air guide pipe (807), an air duct plug (806) is arranged at the end of the air guide pipe (807) located outside the conical wind tube (804), a corrugated joint pipe (803) is arranged at the lower end of the fan (801) corresponding to the position of the air duct plug (806), and an expansion plug (809) is installed at the end of the corrugated joint pipe (803).

2. The laser welding robot according to claim 1, characterized in that: The lower surface of the welding gun (6) is provided with a mounting groove (802), the upper outer side of the conical air cylinder (804) is provided with a threaded joint (805), and the lower surface of the welding gun (6) is located inside the conical air cylinder (804) and a welding head (7) is installed.

3. The laser welding robot according to claim 1, characterized in that: The swing arm mechanism comprises: a first swing arm (2), a second swing arm (3), a third swing arm (4), and a mechanical claw (5).

4. The laser welding robot according to claim 1, characterized in that: The air distribution duct (808) is arranged in communication with the air guide duct (807), and the air duct plug (806) is arranged in communication with the air guide duct (807).

5. The laser welding robot according to claim 3, characterized in that: The second swing arm (3) is movably connected to the first swing arm (2) and the third swing arm (4).

6. The laser welding robot according to claim 2, characterized in that: The conical air cylinder (804) is meshedly connected to the mounting groove (802) via the threaded joint (805).

7. The laser welding robot according to claim 1, characterized in that: The corrugated joint pipe (803) is clamped with the air duct plug (806) via the expansion plug (809).

8. The laser welding robot according to claim 1, characterized in that: The corrugated joint pipe (803) is arranged in communication with the fan (801).

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