Mechanical hand for left door ring welding

Abstract

The utility model relates to mechanical hand technical field discloses a kind of left door ring welding with manipulator, including fixed base, the top of the fixed base is fixed with mounting seat, the top of the mounting seat is installed with welding manipulator main body, the outside of the welding manipulator main body is cooperatively installed with welding connecting frame, the top of the fixed base is provided with positioning mechanism, the top of the fixed base is provided with reinforcing mechanism;The device is provided with positioning mechanism, so that two positioning reinforcing plates clamp material, play the purpose of auxiliary reinforcement, can adapt to the clamping fixation of different size left door ring material, after clamping, ensure that door ring workpiece is firm and immovable in welding process, resist displacement caused by welding deformation and thermal stress, can improve welding accuracy and size consistency;By being provided with reinforcing mechanism, mounting rack outside can be reinforced, to ensure that the connection between fixed base and servo motor is stable, play the role of auxiliary reinforcement.

Description

Technical Field

[0001] This utility model relates to the field of robotic arm technology, specifically a robotic arm for welding a left door ring. Background Technology

[0002] The left door ring is a frame structure on one side of the cockpit, formed by stamping and assembling high-strength steel plates. The robotic arm for welding the left door ring is a device specifically designed for the automotive manufacturing industry. It is an articulated industrial robot equipped with welding tools such as welding guns. Its core function is to complete the welding work of the vehicle's left door ring, ensuring a firm connection and strict dimensional accuracy of all components.

[0003] However, during the welding of the left door ring workpiece using the aforementioned robotic arm, the lack of auxiliary restraints on the outer side of the workpiece may cause displacement due to welding deformation and thermal stress, affecting welding accuracy and dimensional consistency. Therefore, those skilled in the art have provided a robotic arm for welding left door rings to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a robotic arm for welding left door rings, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A robotic arm for welding a left door ring includes a fixed base, a mounting base fixed to the top of the fixed base, a welding robotic arm body mounted on the top of the mounting base, a welding connecting frame fitted to the outer side of the welding robotic arm body, a positioning mechanism and a reinforcement mechanism provided on the top of the fixed base.

[0007] The positioning mechanism includes a servo motor, one end of the output shaft of the servo motor is fixed with a ball screw, the outer side of the ball screw is threaded with a ball nut, one side of the ball nut is fixed with a movable mounting sleeve, the top of the fixed base is mounted with a fixed frame, one side of the movable mounting sleeve is fixed with a positioning reinforcement plate, the outer side of the positioning reinforcement plate is fixed with an anti-disengagement slider, and the top of the fixed base is provided with an anti-disengagement groove.

[0008] As a further embodiment of this utility model: the reinforcement mechanism includes a mounting frame, a fixed semi-threaded rod is fixed to the top of the mounting frame, a fixing block is mounted on the top of the fixing seat, a limit post is fixed to the top of the fixing block, a rotating frame is connected to the outer side of the limit post through a bearing, a movable semi-threaded rod is mounted on the top of the rotating frame, a first threaded sleeve is threadedly connected to the outer sides of the movable semi-threaded rod and the fixed semi-threaded rod, and a second threaded sleeve is threadedly connected to the outer sides of the movable semi-threaded rod and the fixed semi-threaded rod.

[0009] As a further improvement of this utility model: both the outer sides of the first threaded sleeve and the second threaded sleeve are provided with anti-slip textures, and the mounting bracket and the servo motor are fixedly connected.

[0010] As a further embodiment of this utility model: the radius of the fixed semi-threaded rod is equal to the radius of the movable semi-threaded rod, and the bottom surface of the rotating frame is in contact with the mounting frame.

[0011] As a further embodiment of this utility model: the fixed base is slidably connected to an anti-disengagement slider via an anti-disengagement groove, and the servo motor and the fixed base are fixedly connected.

[0012] As a further improvement of this utility model, the movable mounting sleeve has a connecting hole inside, the size of which is adapted to the size of the ball screw.

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

[0014] 1. This device is equipped with a positioning mechanism, which allows two positioning and reinforcing plates to clamp the material, thus providing auxiliary reinforcement. It can accommodate the clamping and fixing of left door ring materials of different sizes. After clamping, it ensures that the door ring workpiece remains firmly in place during the welding process, resisting the displacement caused by welding deformation and thermal stress, thereby improving welding accuracy and dimensional consistency.

[0015] 2. By setting up a reinforcement mechanism, after the servo motor is fixed on the top of the mounting base, the first threaded sleeve is threadedly connected to the fixed half-threaded rod and the movable half-threaded rod, so that the bottom surface of the first threaded sleeve is in close contact with the rotating frame. Then, the second threaded sleeve is threadedly connected to the fixed half-threaded rod and the movable half-threaded rod, so that the bottom surface of the second threaded sleeve is in close contact with the first threaded sleeve. This can reinforce the outside of the mounting frame, thereby ensuring the stable connection between the mounting base and the servo motor, and playing an auxiliary reinforcement role. Attached Figure Description

[0016] Figure 1 A three-dimensional view of a robotic arm for welding a left door ring;

[0017] Figure 2 A schematic diagram of the positioning mechanism in a robotic arm for welding a left door ring;

[0018] Figure 3 This is a schematic diagram of the reinforcement mechanism in a robotic arm for welding a left door ring.

[0019] In the diagram: 1. Fixed base; 2. Mounting base; 3. Main body of welding robot; 4. Welding connecting frame; 5. Positioning mechanism; 51. Servo motor; 52. Ball screw; 53. Ball nut; 54. Movable mounting sleeve; 55. Fixed frame; 56. Positioning reinforcement plate; 57. Anti-detachment slider; 58. Anti-detachment groove; 6. Reinforcement mechanism; 61. Mounting frame; 62. Fixed semi-threaded rod; 63. Fixed block; 64. Limiting post; 65. Rotating frame; 66. Movable semi-threaded rod; 67. First threaded sleeve; 68. Second threaded sleeve. 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] Please see Figure 1-3 In this embodiment of the utility model, a robotic arm for welding a left door ring includes a fixed base 1, a mounting base 2 fixed on the top of the fixed base 1, a welding robotic arm body 3 mounted on the top of the mounting base 2, a welding connecting frame 4 mounted on the outer side of the welding robotic arm body 3, a positioning mechanism 5 and a reinforcing mechanism 6 provided on the top of the fixed base 1.

[0022] The positioning mechanism 5 includes a servo motor 51. A ball screw 52 is fixed to one end of the output shaft of the servo motor 51. A ball nut 53 is threaded onto the outer side of the ball screw 52. A movable mounting sleeve 54 is fixed to one side of the ball nut 53. A fixing bracket 55 is mounted on the top of the fixed base 1. A positioning reinforcement plate 56 is fixed to one side of the movable mounting sleeve 54. An anti-disengagement slider 57 is fixed to the outer side of the positioning reinforcement plate 56. An anti-disengagement groove 58 is provided on the top of the fixed base 1. The anti-disengagement slider 57 is slidably connected to the fixed base 1 through the anti-disengagement groove 58. The servo motor 51 and the fixed base 1 are fixedly connected. A connection hole is provided inside the movable mounting sleeve 54. The size of the connection hole is... The welding robot body 3 is activated to move the welding connecting frame 4 at multiple angles, which is matched with the size of the ball screw 52. The welding connecting frame 4 moves the welding gun, which can be used to weld the left door ring. During the welding process, the material is placed between the corresponding surfaces of the two positioning and reinforcing plates 56. Then, the two servo motors 51 are activated. After the servo motors 51 drive the ball screw 52 to rotate, the ball nut 53 drives the movable mounting sleeve 54 and the positioning and reinforcing plates 56 to move, so that the two positioning and reinforcing plates 56 clamp the material, which serves as an auxiliary reinforcement. It can adapt to the clamping and fixing of left door ring materials of different sizes. After clamping, it ensures that the door ring workpiece is firmly stationary during the welding process.

[0023] In one embodiment of this utility model, the reinforcement mechanism 6 includes a mounting frame 61. A fixed semi-threaded rod 62 is fixed to the top of the mounting frame 61. A fixing block 63 is mounted on the top of the fixing seat 1. A limit post 64 is fixed to the top of the fixing block 63. A rotating frame 65 is connected to the outer side of the limit post 64 via a bearing. A movable semi-threaded rod 66 is mounted on the top of the rotating frame 65. A first threaded sleeve 67 is threadedly connected to the outer side of the movable semi-threaded rod 66 and the fixed semi-threaded rod 62. A second threaded sleeve 68 is threadedly connected to the outer side of the movable semi-threaded rod 66 and the fixed semi-threaded rod 62. Anti-slip textures are provided on the outer side of both the first threaded sleeve 67 and the second threaded sleeve 68. The mounting frame 61 is fixedly connected to the servo motor 51. The radius of the fixed semi-threaded rod 62 is equal to the radius of the movable semi-threaded rod 66. The lower bottom surface of the rotating frame 65 is in contact with the mounting frame 61.

[0024] The working principle of this utility model is as follows: This device is equipped with a positioning mechanism 5. The main body 3 of the welding robot is activated, driving the welding connecting frame 4 to move at multiple angles. The welding connecting frame 4 then moves the welding torch, enabling the welding of the left door ring. During welding, the material is placed between the corresponding surfaces of two positioning and reinforcing plates 56. Then, two servo motors 51 are activated. The servo motors 51 drive the ball screw 52 to rotate, which in turn drives the movable mounting sleeve 54 and the positioning and reinforcing plates 56 to move via the ball nut 53. This allows the two positioning and reinforcing plates 56 to clamp the material, providing auxiliary reinforcement. This mechanism can accommodate the clamping and fixing of left door ring materials of different sizes. After clamping, it ensures that the door ring workpiece remains firmly in place during welding, resisting welding deformation and displacement caused by thermal stress. This improves welding accuracy and dimensional consistency. The mounting bracket 6 is reinforced by a strengthening mechanism 6. After the servo motor 51 is fixed on the top of the mounting base 1, the rotating frame 65 on the outside of the limiting post 64 is rotated, so that the movable semi-threaded rod 66 on the top of the rotating frame 65 and the fixed semi-threaded rod 62 on the top of the mounting bracket 61 are in contact. At this time, the bottom surface of the rotating frame 65 is in contact with the mounting bracket 61. Then, the first threaded sleeve 67 is threadedly connected to the fixed semi-threaded rod 62 and the movable semi-threaded rod 66, so that the bottom surface of the first threaded sleeve 67 is in close contact with the rotating frame 65. Then, the second threaded sleeve 68 is threadedly connected to the fixed semi-threaded rod 62 and the movable semi-threaded rod 66, so that the bottom surface of the second threaded sleeve 68 is in close contact with the first threaded sleeve 67. This can reinforce the outside of the mounting bracket 61, thereby ensuring the stable connection between the mounting base 1 and the servo motor 51, and playing an auxiliary reinforcement role.

[0025] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A robotic arm for welding a left door ring, comprising a fixed base (1), characterized in that, The top of the fixed base (1) is fixed with a mounting base (2), the top of the mounting base (2) is mounted with a welding robot body (3), the outside of the welding robot body (3) is fitted with a welding connecting frame (4), the top of the fixed base (1) is provided with a positioning mechanism (5), and the top of the fixed base (1) is provided with a reinforcing mechanism (6). The positioning mechanism (5) includes a servo motor (51), one end of the output shaft of the servo motor (51) is fixed with a ball screw (52), the outer side of the ball screw (52) is threaded with a ball nut (53), one side of the ball nut (53) is fixed with a movable mounting sleeve (54), the top of the fixed seat (1) is mounted with a fixed bracket (55), one side of the movable mounting sleeve (54) is fixed with a positioning reinforcement plate (56), the outer side of the positioning reinforcement plate (56) is fixed with an anti-dislodgement slider (57), and the top of the fixed seat (1) is provided with an anti-dislodgement groove (58).

2. The robotic arm for welding a left door ring according to claim 1, characterized in that, The reinforcement mechanism (6) includes a mounting frame (61), a fixed half-threaded rod (62) is fixed on the top of the mounting frame (61), a fixing block (63) is installed on the top of the fixing seat (1), a limit post (64) is fixed on the top of the fixing block (63), a rotating frame (65) is connected to the outside of the limit post (64) through a bearing, a movable half-threaded rod (66) is installed on the top of the rotating frame (65), a first threaded sleeve (67) is threadedly connected to the outside of the movable half-threaded rod (66) and the fixed half-threaded rod (62), and a second threaded sleeve (68) is threadedly connected to the outside of the movable half-threaded rod (66) and the fixed half-threaded rod (62).

3. The robotic arm for welding a left door ring according to claim 2, characterized in that, The outer sides of the first threaded sleeve (67) and the second threaded sleeve (68) are provided with anti-slip textures, and the mounting bracket (61) and the servo motor (51) are fixedly connected.

4. The robotic arm for welding a left door ring according to claim 2, characterized in that, The radius of the fixed semi-threaded rod (62) is equal to that of the movable semi-threaded rod (66), and the bottom surface of the rotating frame (65) is in contact with the mounting frame (61).

5. The robotic arm for welding a left door ring according to claim 1, characterized in that, The fixed base (1) is slidably connected to the anti-disengagement slider (57) through the anti-disengagement groove (58), and the servo motor (51) is fixedly connected to the fixed base (1).

6. The robotic arm for welding a left door ring according to claim 1, characterized in that, The movable mounting sleeve (54) has a connecting hole inside, the size of which is adapted to the size of the ball screw (52).

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