Robot arm welding machine

Abstract

The utility model discloses a robot arm welding machine which comprises a base, a guide rail is rotationally connected to the base through a bearing, a first-stage rotating mechanism for driving the guide rail to rotate is installed on the base, a lifting mechanism is installed on the guide rail, and a second-stage rotating mechanism is installed on the lifting mechanism. One end of the second-stage rotating mechanism is connected with a first electric telescopic rod, one end of the first electric telescopic rod is provided with a third-stage rotating mechanism, and the third-stage rotating mechanism is provided with a first mounting plate. The first-stage rotating mechanism, the second-stage rotating mechanism, the third-stage rotating mechanism and the first electric telescopic rod are arranged to drive the welding mechanism to adjust the position, so that circle-drawing type welding can be quickly completed, and the welding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding machines, in particular to a robot welding machine. Background Art

[0002] The utility model patent CN217571306U is also disclosed, which discloses a five-axis robot arm of a laser welding machine, including a horizontal adjustment structure, the horizontal adjustment structure includes a supporting shell, the inner cavity side wall of the supporting shell is fixedly connected to a limiting column, the surface of the limiting column is slidably connected to a sliding plate, the sliding plate is threadedly connected to the surface of the horizontal threaded column, one end of the horizontal threaded column is connected to a driving assembly, the top of the sliding plate is fixedly connected to a connecting plate, and the top of the connecting plate is fixedly connected to the bottom of the adjustment plate.

[0003] Although the five-axis drive method enables the welding mechanism to move in a larger space, if the instructions are attached Figure 6 When welding workpiece A, arc path welding cannot be achieved; when welding workpiece B, if the workpiece is large, that is, the diameter of workpiece B (annular) is greater than the length of the reinforcing column, and the radius of B is less than the length of the reinforcing column, it will be impossible to complete the welding of all parts of the entire workpiece (because even if the device is placed at the center of workpiece B, the fixed shell cannot rotate). In summary, the above device is suitable for linear welding, but cannot meet the requirements of arc path welding. Utility Model Content

[0004] In view of the problems existing in the existing robot welding machine, the utility model is proposed.

[0005] Therefore, the purpose of the utility model is to provide a robot welding machine, which solves the problem that the above-mentioned patent is suitable for linear welding but cannot meet the requirements of arc path welding.

[0006] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0007] A robotic welding machine comprises a base, a guide rail is rotatably connected to the base via a bearing, a primary rotating mechanism for driving the guide rail to rotate is installed on the base, a lifting mechanism is installed on the guide rail, a secondary rotating mechanism is installed on the lifting mechanism, one end of the secondary rotating mechanism is connected to a first electric telescopic rod, one end of the first electric telescopic rod is installed with a third rotating mechanism, and a first mounting plate is installed on the third rotating mechanism.

[0008] As a preferred solution of a robotic welding machine described in the utility model, the primary rotating mechanism includes a first servo motor installed on a base, a driving gear is fixedly installed on the output shaft of the first servo motor, a driven gear is installed on the guide rail, and the driving gear and the driven gear are meshingly connected.

[0009] As a preferred solution of a robotic welding machine described in the utility model, the lifting mechanism includes a second servo motor installed at the top of the guide rail, the output shaft of the second servo motor is connected to a screw rod through a coupling, the screw rod is threaded with a lifting block, and the lifting block is slidably connected to the guide rail.

[0010] As a preferred solution of the robotic welding machine described in the utility model, the guide rail is a hollow structure with an opening at the top, and notches are provided on both sides of the guide rail, and the inner wall of the notch is slidably connected to the lifting block.

[0011] As a preferred solution of a robotic welding machine described in the utility model, the secondary rotating mechanism includes a first bracket fixedly mounted on the lifting block, a third motor is mounted on the first bracket, the output shaft of the third motor is connected to the first electric telescopic rod through a coupling, and the first electric telescopic rod is rotatably connected to the first bracket through a bearing.

[0012] As a preferred solution of a robotic welding machine described in the utility model, the three-stage rotating mechanism includes a support block, a fourth servo motor is mounted on the support block, and the end of the output shaft of the fourth servo motor is fixedly connected to the first mounting plate.

[0013] As a preferred solution of a robotic welding machine described in the utility model, the three-stage rotating mechanism also includes a second bracket, a fifth servo motor is installed on the second bracket, the output shaft of the fifth servo motor is connected to a rotating shaft through a coupling, the bottom end of the rotating shaft is fixedly connected to a support rod, the bottom end of the support rod is slidably connected to a second mounting plate, and a second electric telescopic rod is jointly installed between the support rod and the second mounting plate.

[0014] As a preferred solution of the robotic welding machine described in the utility model, the second bracket is mounted on the first mounting plate by bolts.

[0015] Compared with existing technologies:

[0016] By arranging a primary rotating mechanism, a secondary rotating mechanism, a tertiary rotating mechanism and a first electric telescopic rod to drive the welding mechanism to adjust the position, the circular welding can be completed quickly and the welding efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure provided for Example 1 of the utility model;

[0018] Figure 2 Provided for the utility model embodiment 1 Figure 1 A cross-sectional view of

[0019] Figure 3 A schematic diagram of a guide rail provided in Example 1 of the utility model;

[0020] Figure 4 A schematic diagram of the structure provided for Embodiment 2 of the present utility model;

[0021] Figure 5 Provided for Example 2 of the utility model Figure 4 A partial enlarged view of

[0022] Figure 6 A workpiece diagram with welding ring A1 provided in Example 1 of the utility model;

[0023] Figure 7 Figure B is a workpiece diagram with a welding ring B1 provided in Example 1 of the utility model.

[0024] In the figure: guide rail 1, second servo motor 2, top cover 3, driving gear 4, first servo motor 5, base 6, first bracket 7, third motor 8, first electric telescopic rod 9, support block 10, first mounting plate 11, notch 12, screw rod 13, lifting block 14, second bracket 15, fifth servo motor 16, support rod 17, second mounting plate 18, second electric telescopic rod 19, rotating shaft 20, fourth servo motor 21. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clear, the implementation methods of the present invention will be further described in detail below with reference to the accompanying drawings. Embodiment 1:

[0026] The utility model provides a robot hand welding machine, please refer to Figure 1-3 , including a base 6, a guide rail 1 is rotatably connected to the base 6 through a bearing, a primary rotating mechanism for driving the guide rail 1 to rotate is installed on the base 6, a lifting mechanism is installed on the guide rail 1, a secondary rotating mechanism is installed on the lifting mechanism, one end of the secondary rotating mechanism is connected to a first electric telescopic rod 9, one end of the first electric telescopic rod 9 is installed with a third rotating mechanism, a first mounting plate 11 is installed on the third rotating mechanism, and the first mounting plate 11 is used to install a welding mechanism (such as a welding gun, etc.); the extension and retraction of the first electric telescopic rod 9 can drive the support block 10 to move, thereby changing the distance between the welding mechanism and the guide rail 1, thereby changing the rotation radius, which is convenient for welding similar workpieces B.

[0027] The primary rotating mechanism includes a first servo motor 5 installed on a base 6, a driving gear 4 is fixedly installed on the output shaft of the first servo motor 5, a driven gear is installed on the guide rail 1, and the driving gear 4 and the driven gear are meshed and connected; the first servo motor 5 is used to drive the guide rail 1 to rotate, so that the first mounting plate 11 can rotate. If the device is placed at the center of the workpiece B, the welding mechanism can rotate, thereby realizing the welding work of each welding ring B1.

[0028] The lifting mechanism includes a second servo motor 2 installed at the top of the guide rail 1. The output shaft of the second servo motor 2 is connected to a screw rod 13 through a coupling. A lifting block 14 is threadedly connected to the screw rod 13. The lifting block 14 is slidably connected to the guide rail 1.

[0029] The guide rail 1 is a hollow structure with an opening at the top. Notches 12 are provided on both sides of the guide rail 1. The inner wall of the notch 12 is slidably connected to the lifting block 14. Through the placement of bolt connections, when the lifting block 14 stops lifting, the screw rod 13 can lock the lifting block 14.

[0030] The secondary rotating mechanism includes a first bracket 7 fixedly mounted on the lifting block 14, a third motor 8 is mounted on the first bracket 7, an output shaft of the third motor 8 is connected to a first electric telescopic rod 9 via a coupling, and the first electric telescopic rod 9 is rotationally connected to the first bracket 7 via a bearing.

[0031] The three-stage rotating mechanism includes a support block 10, on which a fourth servo motor 21 is mounted, and the end of the output shaft of the fourth servo motor 21 is fixedly connected to the first mounting plate 11; the secondary rotating mechanism and the tertiary rotating mechanism can drive the first mounting plate 11 and the welding mechanism thereon to rotate in two different planes.

[0032] During specific use, the welding mechanism is mounted on the first mounting plate 11 by bolts, and the secondary rotating mechanism and the tertiary rotating mechanism can be used to realize the rotation of the welding mechanism in different planes, and the distance between the welding mechanism and the guide rail 1 can be changed by extending and retracting the first electric telescopic rod 9, thereby changing the rotation radius; and the guide rail 1 can be driven to rotate by the first servo motor 5, thereby realizing the adjustment of any position of the welding mechanism. Embodiment 2:

[0033] Refer to the attached Figure 4-5, which is different from Example 1, is that the three-stage rotating mechanism also includes a second bracket 15, which is mounted on the first mounting plate 11 by bolts, and a fifth servo motor 16 is mounted on the second bracket 15, and the output shaft of the fifth servo motor 16 is connected to a rotating shaft 20 through a coupling, and the bottom end of the rotating shaft 20 is fixedly connected to a support rod 17, and the bottom end of the support rod 17 is slidably connected to a second mounting plate 18, and the second mounting plate 18 is used to install a welding mechanism, and a second electric telescopic rod 19 is installed between the support rod 17 and the second mounting plate 18.

[0034] The distance between the welding mechanism and the center of the second mounting plate 18 is adjusted by extending and retracting the second electric telescopic rod 19, and the welding mechanism is driven to rotate by the fifth servo motor 16, so as to facilitate the welding of each welding ring A1 and welding ring B1.

[0035] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A robotic welding machine, comprising a base (6), to which a guide rail (1) is rotatably connected via a bearing, and characterized in that: A primary rotating mechanism for driving the guide rail (1) to rotate is mounted on the base (6); a lifting mechanism is mounted on the guide rail (1); a secondary rotating mechanism is mounted on the lifting mechanism; one end of the secondary rotating mechanism is connected to a first electric telescopic rod (9); one end of the first electric telescopic rod (9) is mounted to a third rotating mechanism; and a first mounting plate (11) is mounted on the third rotating mechanism.

2. A robot welding machine according to claim 1, characterized in that: The primary rotating mechanism comprises a first servo motor (5) mounted on a base (6), a driving gear (4) being fixedly mounted on an output shaft of the first servo motor (5), a driven gear being mounted on the guide rail (1), and the driving gear (4) and the driven gear being meshingly connected.

3. The robot welding machine according to claim 1, characterized in that: The lifting mechanism comprises a second servo motor (2) mounted on the top end of the guide rail (1); the output shaft of the second servo motor (2) is connected to a lead screw (13) via a coupling; a lifting block (14) is threadedly connected to the lead screw (13); and the lifting block (14) is slidably connected to the guide rail (1).

4. The robot welding machine according to claim 1, characterized in that: The guide rail (1) is a hollow structure with an opening at the top. Notches (12) are provided on both sides of the guide rail (1), and the inner wall of the notch (12) is slidably connected to a lifting block (14).

5. The robot welding machine according to claim 3, characterized in that: The secondary rotating mechanism comprises a first bracket (7) fixedly mounted on a lifting block (14); a third motor (8) is mounted on the first bracket (7); an output shaft of the third motor (8) is connected to the first electric telescopic rod (9) via a coupling; and the first electric telescopic rod (9) is rotatably connected to the first bracket (7) via a bearing.

6. The robot welding machine according to claim 1, characterized in that: The three-stage rotating mechanism comprises a support block (10), a fourth servo motor (21) is mounted on the support block (10), and the end of the output shaft of the fourth servo motor (21) is fixedly connected to the first mounting plate (11).

7. The robot welding machine according to claim 1, characterized in that: The three-stage rotating mechanism further comprises a second bracket (15), a fifth servo motor (16) being mounted on the second bracket (15), an output shaft of the fifth servo motor (16) being connected to a rotating shaft (20) via a coupling, a bottom end of the rotating shaft (20) being fixedly connected to a support rod (17), a bottom end of the support rod (17) being slidably connected to a second mounting plate (18), and a second electric telescopic rod (19) being mounted between the support rod (17) and the second mounting plate (18).

8. The robot welding machine according to claim 7, characterized in that: The second bracket (15) is mounted on the first mounting plate (11) by means of bolts.

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