CN216326040U

CN216326040U - Robot welding arm

Info

Publication number: CN216326040U
Application number: CN202122878180.1U
Authority: CN
Inventors: 江勇; 黄静; 董宏伟
Original assignee: Suzhou Geyou Intelligent Equipment Technology Co ltd
Current assignee: Suzhou Geyou Intelligent Equipment Technology Co ltd
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2022-04-19
Anticipated expiration: 2031-11-23

Abstract

The utility model discloses a robot welding mechanical arm which comprises a robot main arm, a bearing seat, a first small arm, a second small arm, a welding gun main body, a ball joint bearing, a supporting rod and a tension spring, wherein the first small arm is fixedly arranged on the right end face of the robot main arm, and the left end and the right end of the supporting rod are respectively fixedly connected with the first small arm and the second small arm in a threaded manner. The bracing piece intensity is less than the structure reduction of first forearm, second forearm, robot main arm, therefore the bracing piece at first breaks, simultaneously because first forearm, second forearm pass through ball joint bearing, consequently the second forearm can rotate certain angle with first forearm relatively, consequently can avoid the robot main arm to take place to warp or damage, when the maintenance, only change new bracing piece can, have maintenance efficiency height and cost of maintenance low advantage.

Description

Robot welding arm

Technical Field

The utility model belongs to the technical field of robots, and particularly relates to a robot welding mechanical arm.

Background

The welding robot is an industrial robot that engages in welding, including cutting and painting. An industrial robot is a versatile, reprogrammable, automatically controlled Manipulator (Manipulator) with three or more programmable axes for use in the field of industrial automation, according to the international organization for standardization (ISO) which is a definition of standard welding robots. To accommodate different applications, the mechanical interface of the last axis of the robot, usually a connecting flange, may be used to attach different tools or end effectors. The welding robot is that a welding clamp or a welding (cutting) gun is arranged on a tail shaft flange of an industrial robot, so that the welding robot can carry out welding, cutting or thermal spraying. When the welding robot works, the problem that the mechanical arm collides with a workpiece is caused during programming misoperation, so that the welding mechanical arm is deformed or broken, the production efficiency is delayed when the welding mechanical arm is replaced, and the maintenance cost is usually higher.

Disclosure of Invention

The technical problem to be solved by the utility model is as follows: the problem of welding mechanical arm fracture or deformation can be prevented when the welding machine mechanical arm and the work piece take place the rigidity and collide is solved.

In order to solve the technical problems, the utility model is realized by the following technical scheme: the utility model provides a robot welding arm, includes the robot main arm, bears seat, first forearm, second forearm, welder main part, ball joint bearing, bracing piece, extension spring, first forearm fixed mounting is on the robot main arm right-hand member face, second forearm fixed mounting is on the left end face of bearing the seat, rotate through ball joint bearing between first forearm and the second forearm and be connected, welder main part fixed mounting is on bearing the seat, the extension spring cup joints and installs on first forearm, second forearm, the left and right both ends of extension spring respectively with the robot main arm, bear seat fixed connection, correspond on first forearm, the second forearm and be provided with bracing piece structure matched with recess, both ends imbed respectively in the recess that sets up on first forearm, second forearm about the bracing piece, both ends respectively with first forearm about the bracing piece, The second small arm is fixed by screw connection.

Preferably, four support rods are fixedly arranged on the first small arm and the second small arm in a threaded manner in an annular array.

Preferably, two ends of the bottom surface of the support rod are arranged to be in an oblique angle structure.

Preferably, the first small arm is fixedly mounted on the main robot arm by welding, and the second small arm is fixedly mounted on the load bearing seat by welding.

Compared with the prior art, the utility model has the advantages that: under the condition of not installing the supporting rod, the first small arm and the second small arm can relatively rotate, under the action of the tension spring, the first small arm and the second small arm can be in a coaxial state, so that the supporting rod is fixedly arranged on the first small arm and the second small arm, when the supporting rod is fixedly arranged on the first small arm and the second small arm in a screwed mode, the first small arm and the second small arm can be rotated under the rigid supporting action of the supporting rod to ensure the stability of a welding mechanical arm main body in the displacement process, when the welding gun main body or a bearing seat collides with a workpiece, the strength of the supporting rod is lower than that of the first small arm, the second small arm and a robot main arm, so that the supporting rod is firstly broken, and simultaneously, the first small arm and the second small arm pass through a ball joint bearing, so that the second small arm can relatively rotate for a certain angle with the first small arm, and the robot main arm can be prevented from being deformed or damaged, when the maintenance, only need change new bracing piece can, have maintenance efficiency height and the low advantage of cost of maintenance.

Description of the drawings:

the utility model is further described below with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic view of the mounting structure of the first and second small arms.

Fig. 3 is an enlarged schematic view of M of fig. 1.

The specific implementation mode is as follows:

the present invention will be described in detail with reference to specific embodiments below:

as shown in fig. 1 to 3, the robot welding mechanical arm includes a main robot arm 1, a bearing seat 2, a first small arm 3, a second small arm 4, a welding gun body 5, a ball joint bearing 6, a support rod 7 and a tension spring 8, wherein the first small arm 3 is fixedly installed on the right end surface of the main robot arm 1, the second small arm 4 is fixedly installed on the left end surface of the bearing seat 2, the first small arm 3 is rotatably connected with the second small arm 4 through the ball joint bearing 6, the welding gun body 5 is fixedly installed on the bearing seat 2, the tension spring 8 is installed on the first small arm 3 and the second small arm 4 in a sleeved manner, the left end and the right end of the tension spring 8 are respectively fixedly connected with the main robot arm 1 and the bearing seat 2, grooves matched with the support rod 7 are correspondingly arranged on the first small arm 3 and the second small arm 4, and the left end and the right end of the support rod 7 are respectively embedded into the first small arm 3, the second small arm 3, the support rod 7, In the recess that sets up on the second forearm 4, both ends are fixed with first forearm 3, the spiro union of second forearm 4 respectively about bracing piece 7.

In order to enable the support rod 7 to have a rigid supporting force and enable the support rod 7 to be broken when the mechanical arm is impacted, four support rods 7 are preferably fixedly mounted on the first small arm 3 and the second small arm 4 in a threaded manner in an annular array.

In addition, in order to facilitate the embedding and installation of the supporting rod 7 in the grooves formed in the main arm 1 and the bearing seat 2 of the robot, two ends of the bottom surface of the supporting rod 7 are provided with oblique angle structures.

The first small arm 3 is fixedly installed on the robot main arm 1 in a welding mode, the second small arm 4 is fixedly installed on the bearing seat 2 in a welding mode, and the welding fixing mode has the advantages of being firm in installation and convenient to fix.

Under the condition of not installing the support rod 7, the first small arm 3 and the second small arm 4 can relatively rotate, under the action of the tension spring 8, the first small arm 3 and the second small arm 4 can be in a coaxial state, so that the support rod 7 is fixedly installed on the first small arm 3 and the second small arm 4, when the support rod 7 is fixedly installed on the first small arm 3 and the second small arm 4 in a screwed mode, the first small arm 3 and the second small arm 4 can be rotated under the rigid supporting action of the support rod 7, the stability of a welding mechanical arm main body in the displacement process is ensured, when the welding gun main body 5 or the bearing seat 2 collides with a workpiece, because the strength of the support rod 7 is lower than that of the first small arm 3, the second small arm 4 and the structure of the robot main arm 1 is reduced, the support rod 7 is firstly broken, and simultaneously because the first small arm 3 and the second small arm 4 pass through the ball joint bearing 6, the second small arm 4 can relatively rotate with the first small arm 3 by a certain angle, therefore, the robot main arm 1 can be prevented from being deformed or damaged, and only the new supporting rod 7 is replaced during maintenance, so that the robot main arm has the advantages of high maintenance efficiency and low maintenance cost.

It is to be emphasized that: it will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. The utility model provides a robot welding arm which characterized in that: comprises a main robot arm (1), a bearing seat (2), a first small arm (3), a second small arm (4), a welding gun main body (5), a ball joint bearing (6), a support rod (7) and a tension spring (8), wherein the first small arm (3) is fixedly arranged on the right end surface of the main robot arm (1), the second small arm (4) is fixedly arranged on the left end surface of the bearing seat (2), the first small arm (3) and the second small arm (4) are rotatably connected through the ball joint bearing (6), the welding gun main body (5) is fixedly arranged on the bearing seat (2), the tension spring (8) is sleeved on the first small arm (3) and the second small arm (4), the left end and the right end of the tension spring (8) are respectively fixedly connected with the main robot arm (1) and the bearing seat (2), and grooves which are matched with the support rod (7) are correspondingly arranged on the first small arm (3) and the second small arm (4), the left end and the right end of the supporting rod (7) are respectively embedded into grooves formed in the first small arm (3) and the second small arm (4), and the left end and the right end of the supporting rod (7) are respectively fixed with the first small arm (3) and the second small arm (4) in a threaded mode.

2. The robotic welding robot arm of claim 1, wherein: the support rods (7) are fixedly mounted with four pieces in an annular array manner on the first small arm (3) and the second small arm (4).

3. The robotic welding robot arm of claim 1, wherein: two ends of the bottom surface of the supporting rod (7) are arranged to be oblique angle structures.

4. The robotic welding robot arm of claim 1, wherein: the first small arm (3) is fixedly arranged on the robot main arm (1) in a welding mode, and the second small arm (4) is fixedly arranged on the bearing seat (2) in a welding mode.