CN221639941U - Welding mechanical arm and automobile welding production line - Google Patents

Abstract

The utility model discloses a welding mechanical arm and an automobile welding production line, wherein the welding mechanical arm comprises a base, a rotating mechanism, a rack and a mechanical arm mechanism; the machine frame is arranged on the base through a rotating mechanism, a driving mechanism for driving the mechanical arm mechanism to move is arranged on the machine frame, and the driving mechanism comprises a safety protection device for monitoring the temperature inside the driving mechanism in real time; the mechanical arm mechanism comprises a mechanical arm, a transmission arm and a welding device; the welding device comprises a welding head mounting plate and a plurality of welding head assemblies uniformly distributed on the welding head mounting plate, wherein each welding head assembly comprises a welding head, an X-axis sliding block, a Y-axis sliding block, a Z-axis sliding block and an X-axis rotating sliding block; the welding device is connected with the controller; the rotating mechanism comprises a servo motor, a speed reducer and a slewing bearing. The welding mechanical arm provided by the utility model can meet the welding requirements of various positions and angles, has stable and reliable welding quality, is simple and convenient to operate, reduces the labor intensity of workers and improves the production efficiency.

Description

A welding robot arm and automobile welding production line

Technical Field

The utility model relates to the technical field of automobile processing, and more specifically, to a welding mechanical arm and an automobile welding production line.

Background Art

In the automotive industry, the entire car, whether it is the body, compartment, engine, or gearbox, requires welding technology to connect, protect, and fix. With the rapid development of people's lives, industrial robots are increasingly used in the automotive industry, among which welding robotic arms are indispensable parts of industrial robots.

The existing welding robot arm generally has a single welding head, and the welding position and angle of the single welding head are relatively single, which cannot meet the welding needs of various positions and angles, affecting the welding effect and thus affecting the processing efficiency.

Therefore, there is an urgent need to provide a welding robot arm and an automobile welding production line that can meet welding requirements at various positions and angles and effectively improve welding effects.

Utility Model Content

In view of this, the utility model provides a welding robot arm, including a base, a rotating mechanism, a frame and a robot arm mechanism; the frame is arranged on the base through the rotating mechanism, and a driving mechanism for driving the robot arm mechanism to move is provided on the frame, and the driving mechanism includes a safety protection device, and the safety protection device monitors the internal temperature of the driving mechanism in real time; the robot arm mechanism includes a robot arm, and a transmission arm is rotatably connected to the robot arm, and a welding device is rotatably connected to the transmission arm; the welding device includes a welding head mounting plate, a plurality of welding head assemblies arranged on the welding head mounting plate, and the welding head assemblies are evenly distributed on the welding head mounting plate, and the welding head assembly includes a welding head, an X-axis slider, a Y-axis slider, a Z-axis slider and an X-rotation slider, the Y-axis slider is arranged and connected to the welding head mounting plate, the X-axis slider is arranged and connected to the Y-axis slider, the Z-axis slider is arranged and connected to the X-axis slider, and the welding head is connected to the Z-axis slider through the X-rotation slider; the welding device is connected to the controller; the rotating mechanism includes a servo motor, a reducer and a slewing bearing, the servo motor is installed in the frame, and the servo motor output shaft is coaxial with the reducer input shaft; the reducer output shaft is connected to the base through a slewing bearing.

Preferably, the Y-axis slider includes a Y-axis fixed plate arranged on the welding head mounting plate, a Y-axis screw rod rotatably arranged on the Y-axis fixed plate, a Y-axis adapter plate slidably arranged on the Y-axis screw rod, and a Y-axis motor for driving the Y-axis screw rod to rotate.

Preferably, the X-axis slider includes an X-axis fixed plate arranged on the Y-axis adapter plate, an X-axis screw rotatably arranged on the X-axis fixed plate, an X-axis adapter plate slidably arranged on the X-axis screw, and an X-axis motor for driving the X-axis screw to rotate.

Preferably, the Z-axis slider includes a Z-axis fixing plate arranged on the X-axis adapter plate, a Z-axis screw rod rotatably arranged on the Z-axis fixing plate, a Z-axis adapter plate slidably arranged on the Z-axis screw rod, and a Z-axis motor for driving the Z-axis screw rod to rotate.

Preferably, the X-rotating slider includes a rotating platform arranged on the Z-axis adapter plate, a welding head arranged on the rotating platform and rotating with the rotating platform, and an X-rotating motor arranged on the rotating platform for adjusting the rotation amplitude.

Preferably, the driving mechanism is a cylinder or a motor.

Preferably, the controller is a PLC controller.

The utility model also provides an automobile welding production line, which comprises a feeding line and the welding mechanical arm.

Compared with the prior art, the welding robot arm and automobile welding production line provided by the utility model achieve at least the following beneficial effects:

The utility model provides a welding robot arm and an automobile welding production line. The welding robot arm is provided by arranging a frame on a base through a rotating mechanism. The rotating mechanism includes a servo motor, a reducer and a slewing bearing. The servo motor is installed in the frame. The output shaft of the servo motor is coaxial with the input shaft of the reducer. The output shaft of the reducer is connected to the base through a slewing bearing. The servo motor drives the frame to rotate through the reducer. A driving mechanism is provided on the frame, and the mechanical arm mechanism is driven to move through the driving mechanism to complete the adjustment of the working direction of the mechanical arm. The welding robot arm provided by the utility model can realize rotation and move in the horizontal direction at the same time, thereby increasing flexibility. The driving mechanism includes a safety protection device, which monitors the internal temperature of the driving mechanism in real time. When the temperature is too high, the safety protection device adjusts the working direction of the driving mechanism. The power is reduced, so that the working power of the driving mechanism is reduced to ensure the safety of the welding process; the mechanical arm mechanism includes a mechanical arm, the mechanical arm is rotatably connected to a transmission arm, the transmission arm is rotatably connected to a welding device, the welding device includes a welding head mounting plate, a plurality of welding head assemblies arranged on the welding head mounting plate, the welding head assemblies are evenly distributed and arranged on the welding head mounting plate, the welding head assemblies include a welding head, an X-axis slider, a Y-axis slider, a Z-axis slider and an X-rotation slider, the Y-axis slider is arranged and connected to the welding head mounting plate, the X-axis slider is arranged and connected to the Y-axis slider, the Z-axis slider is arranged and connected to the X-axis slider, and the welding head is connected to the Z-axis slider through the X-rotation slider, so that the position and angle of the welding head can be adjusted; the welding device is connected to the controller, and the controller controls the welding of the welding device, improves the rotation accuracy, and ensures the quality and efficiency of welding. The welding mechanical arm of the utility model can meet the welding of various positions and angles, can effectively avoid the welding position and angle being relatively single, the welding quality is stable and reliable, the operation is simple, the labor intensity of workers is reduced, and the production efficiency is improved.

Of course, any product implementing the present utility model does not necessarily need to achieve all of the above-mentioned technical effects at the same time.

Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

FIG1 is a schematic diagram of the overall structure of a welding robot arm provided by the present invention;

FIG2 is a schematic structural diagram of a rotating mechanism provided by the present invention;

FIG3 is a schematic structural diagram of a welding head assembly provided by the present invention;

FIG4 is a schematic diagram of the structure of an X-axis slider and a Y-axis slider provided by the present invention;

FIG5 is a schematic diagram of the structure of a Z-axis slider and an X-rotation slider provided by the present invention;

FIG6 is a schematic structural diagram of an automobile welding production line provided by the utility model.

DETAILED DESCRIPTION

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

Existing welding robot arms generally have a single welding head, and the welding position and angle of the single welding head are relatively single, which cannot meet the welding surfaces at various positions and angles, thus affecting the welding effect and thus affecting the processing efficiency.

Based on the above research, this application proposes a welding robot arm that can meet the welding needs of various positions and angles, with stable and reliable welding quality, simple operation, reduced labor intensity of workers, and improved production efficiency. A welding robot arm and an automobile welding production line with the above technical effects provided by this application are described in detail as follows.

Please refer to Figures 1 to 3, Figure 1 is a schematic diagram of the overall structure of a welding robot arm provided by the utility model, Figure 2 is a schematic diagram of the structure of a rotating mechanism provided by the utility model, and Figure 3 is a schematic diagram of the structure of a welding head assembly provided by the utility model. The present application provides a welding robot arm 000, including a base 1, a rotating mechanism 2, a frame 3 and a robot arm mechanism 4; the frame 3 is arranged on the base 1 through the rotating mechanism 2, and the frame 3 is provided with a driving mechanism 5 for driving the robot arm mechanism 4 to move, and the driving mechanism 5 includes a safety protection device, and the safety protection device monitors the internal temperature of the driving mechanism 5 in real time; the robot arm mechanism 4 includes a robot arm 6, and a transmission arm 7 is rotatably connected to the robot arm 6, and a welding device 8 is rotatably connected to the transmission arm 7; the welding device 8 includes a welding head mounting plate 81, which is arranged on the welding head mounting plate 81 The welding head assemblies 82 are evenly distributed on the welding head mounting plate 81. The welding head assembly 82 includes a welding head 821, an X-axis slider 822, a Y-axis slider 823, a Z-axis slider 824 and an X-rotation slider 825. The Y-axis slider 823 is connected to the welding head mounting plate 81, the X-axis slider 822 is connected to the Y-axis slider 823, the Z-axis slider 824 is connected to the X-axis slider 822, and the welding head 821 is connected to the Z-axis slider 824 through the X-rotation slider 825; the welding device 8 is connected to the controller; the rotating mechanism 2 includes a servo motor 21, a reducer 22 and a slewing bearing 23, the servo motor 21 is installed in the frame 3, and the output shaft of the servo motor 21 is coaxial with the input shaft of the reducer 22; the output shaft of the reducer 22 is connected to the base 1 through the slewing bearing 23.

It can be understood that the welding robot arm 000 provided in the present application is composed of a base 1, a rotating mechanism 2, a frame 3 and a robot arm mechanism 4 to achieve welding of the car; the frame 3 is arranged on the base 1 through the rotating mechanism 2, the rotating mechanism 2 includes a servo motor 21, a reducer 22 and a slewing bearing 23, the servo motor 21 is installed in the frame 3, the output shaft of the servo motor 21 is coaxial with the input shaft of the reducer 22, the output shaft of the reducer 22 is connected to the base 1 through the slewing bearing 23, and the servo motor 21 drives the frame 3 to rotate through the reducer 22; a driving mechanism 5 is provided on the frame 3, and the robot arm mechanism 4 is driven to move by the driving mechanism 5 to complete the adjustment of the working direction of the robot arm, so that the welding robot arm 000 provided by the utility model can achieve rotation and move in the horizontal direction at the same time, thereby increasing flexibility; the driving mechanism 5 includes a safety protection device, which monitors the internal temperature of the driving mechanism 5 in real time. When the temperature is too high, the safety protection device adjusts the working power of the driving mechanism 5 , so that the working power of the driving mechanism 5 is reduced to ensure the safety of the welding process; by setting the mechanical arm mechanism 4 including a mechanical arm 6, the mechanical arm 6 is rotatably connected to a transmission arm 7, and the transmission arm 7 is rotatably connected to a welding device 8, the welding device 8 includes a welding head mounting plate 81, and a plurality of welding head assemblies 82 arranged on the welding head mounting plate 81, and the welding head assemblies 82 are evenly distributed on the welding head mounting plate 81, and the welding head assembly 82 includes a welding head 821, an X-axis slider 822, a Y-axis slider 823, a Z-axis slider 824 and an X-rotation slider 825, the Y-axis slider 823 is arranged and connected to the welding head mounting plate 81, the X-axis slider 822 is arranged and connected to the Y-axis slider 823, and the Z-axis slider 824 is arranged and connected to the X-axis slider 822, and the welding head 821 is connected to the Z-axis slider 824 through the X-rotation slider 825, so that the position and angle of the welding head 821 can be adjusted; the welding device 8 is connected to the controller, and the controller controls the welding of the welding device 8, improves the rotation accuracy, and ensures the quality and efficiency of welding. The welding robot arm 000 of the utility model can meet the welding needs of various positions and angles, can effectively avoid the welding position and angle being relatively single, has stable and reliable welding quality, is easy to operate, reduces the labor intensity of workers, and improves production efficiency.

It should be noted that, in this embodiment, the driving mechanism 5 may be a cylinder or a motor; and the controller may be a PLC controller.

Optionally, please refer to Figures 3 to 5, Figure 4 is a structural schematic diagram of an X-axis slider and a Y-axis slider provided by the utility model, Figure 5 is a structural schematic diagram of a Z-axis slider and an X-rotation slider provided by the utility model, the Y-axis slider 823 includes a Y-axis fixed plate 8231 arranged on the welding head mounting plate 81, a Y-axis screw rod 8232 rotatably arranged on the Y-axis fixed plate 8231, a Y-axis adapter plate 8233 slidably arranged on the Y-axis screw rod 8232, and a Y-axis motor 8234 for driving the Y-axis screw rod 8232 to rotate. By driving the Y-axis screw rod 8232 to rotate by the Y-axis motor 8234, the Y-axis adapter plate 8233 slidably arranged on the Y-axis screw rod 8232 can be driven to drive the Y-axis screw rod 8232 to rotate, so as to drive the Y-axis adapter plate 8233 slidably arranged on the Y-axis screw rod 8232 to complete the forward and backward movement in the Y-axis direction. The X-axis slider 822 includes an X-axis fixed plate 8221 arranged on the Y-axis adapter plate 8233, an X-axis screw rod 8222 rotatably arranged on the X-axis fixed plate 8221, an X-axis adapter plate 8223 slidably arranged on the X-axis screw rod 8222, and an X-axis motor 8224 for driving the X-axis screw rod 8222 to rotate. By driving the X-axis screw rod 8222 to rotate by the X-axis motor 8224, the X-axis adapter plate 8223 slidably arranged on the X-axis screw rod 8222 can be driven to drive the X-axis adapter plate 8223 slidably arranged on the X-axis screw rod 8222 to complete the forward and backward movement in the X-axis direction. The Z-axis slider 824 includes a Z-axis fixing plate 8241 arranged on the X-axis adapter plate 8223, a Z-axis screw rod 8242 rotatably arranged on the Z-axis fixing plate 8241, a Z-axis adapter plate 8243 slidably arranged on the Z-axis screw rod 8242, and a Z-axis motor 8244 for driving the Z-axis screw rod 8242 to rotate. By driving the Z-axis screw rod 8242 to rotate by the Z-axis motor 8244, the Z-axis adapter plate 8243 slidably arranged on the Z-axis screw rod 8242 can be driven to drive the Z-axis adapter plate 8243 slidably arranged on the Z-axis screw rod 8242 to complete the forward and backward movement in the Z-axis direction. The X-rotating slider 825 includes a rotating platform 8251 arranged on the Z-axis adapter plate 8243, a welding head 821 arranged on the rotating platform 8251 and rotating with the rotating platform 8251, and an X-rotating motor 8252 arranged on the rotating platform 8251 for adjusting the rotation amplitude. The welding head 821 on the rotating platform that rotates with the rotating platform 8251 is driven by the X-rotating motor 8252 to rotate with the X-axis as the rotating axis, so as to adjust the rotation amplitude of the welding head 821.

Please refer to FIG. 6 , which is a schematic structural diagram of an automobile welding production line provided by the present invention. The present invention further provides an automobile welding production line 100 , including a feeding line 101 and a welding robot arm 000 provided by any embodiment of the present invention.

In actual operation, when welding is required, the workpiece 102 to be welded is transported to the bottom of the welding robot arm 000 through the feeding line 101. After the workpiece 102 to be welded is in place, the rotating mechanism 2 arranged under the frame 3 and the driving mechanism 5 arranged above the frame 3 are started, thereby driving the robot arm mechanism 4 to move, and completing the adjustment of the working direction of the robot arm, so that the welding robot arm 000 provided by the utility model can realize rotation and move in the horizontal direction at the same time, thereby increasing flexibility; the controller controls the welding device 8 to adjust according to the welding position of the workpiece 102 to be welded, and drives the Y-axis lead screw 8232 to rotate through the Y-axis motor 8234, so as to drive the Y-axis adapter plate 8233 slidingly arranged on the Y-axis lead screw 8232 to complete the forward and backward movement in the Y-axis direction; drives the X-axis lead screw 8222 to rotate through the X-axis motor 8224, so as to drive the sliding set on the X-axis The X-axis adapter plate 8223 on the screw rod 8222 completes the forward and backward movement in the X-axis direction; the Z-axis motor 8244 drives the Z-axis screw rod 8242 to rotate, which can drive the Z-axis adapter plate 8243 slidably set on the Z-axis screw rod 8242 to complete the forward and backward movement in the Z-axis direction; the X-rotating motor 8252 drives the welding head 821 on the rotating platform to rotate with the rotating platform 8251 with the X-axis as the rotating axis, which is used to adjust the adjustment rotation amplitude of the welding head 821, thereby realizing the position and angle adjustment of the welding head 821, so that it is aligned with the welding position to complete the welding, and flows out to the next process through the feeding line 101, ensuring the quality and efficiency of the welding; during the welding process, the safety protection device monitors the internal temperature of the driving mechanism 5 in real time. When the temperature is too high, the safety protection device adjusts the working power of the driving mechanism 5 to reduce the working power of the driving mechanism 5 to ensure the safety of the welding process. The welding robot arm 000 of the utility model can meet the welding needs of various positions and angles, can effectively avoid the welding position and angle being relatively single, has stable and reliable welding quality, is easy to operate, reduces the labor intensity of workers, and improves production efficiency.

It can be seen from the above embodiments that the welding robot arm and the automobile welding production line provided by the utility model achieve at least the following beneficial effects:

The utility model provides a welding mechanical arm and an automobile welding production line. A frame is arranged on a base through a rotating mechanism. The rotating mechanism includes a servo motor, a reducer and a slewing bearing. The servo motor is installed in the frame. The output shaft of the servo motor is coaxial with the input shaft of the reducer. The output shaft of the reducer is connected to the base through a slewing bearing. The servo motor drives the frame to rotate through the reducer. A driving mechanism is arranged on the frame. The mechanical arm mechanism is driven to move through the driving mechanism to adjust the working direction of the mechanical arm. The welding mechanical arm provided by the utility model can rotate and move in the horizontal direction at the same time, thereby increasing flexibility. The driving mechanism includes a safety protection device. The safety protection device monitors the internal temperature of the driving mechanism in real time. When the temperature is too high, the safety protection device adjusts the working power of the driving mechanism. The working power of the driving mechanism is reduced to ensure the safety of the welding process; the mechanical arm mechanism includes a mechanical arm, a transmission arm is rotatably connected to the mechanical arm, a welding device is rotatably connected to the transmission arm, the welding device includes a welding head mounting plate, a plurality of welding head assemblies arranged on the welding head mounting plate, the welding head assemblies are evenly distributed and arranged on the welding head mounting plate, the welding head assemblies include a welding head, an X-axis slider, a Y-axis slider, a Z-axis slider and an X-rotation slider, the Y-axis slider is arranged and connected to the welding head mounting plate, the X-axis slider is arranged and connected to the Y-axis slider, the Z-axis slider is arranged and connected to the X-axis slider, and the welding head is connected to the Z-axis slider through the X-rotation slider, so that the position and angle of the welding head can be adjusted; the welding device is connected to the controller, and the controller controls the welding of the welding device, improves the rotation accuracy, and ensures the quality and efficiency of welding. The welding mechanical arm of the utility model can meet the welding of various positions and angles, can effectively avoid the single welding position and angle, has stable and reliable welding quality, is easy to operate, reduces the labor intensity of workers, and improves production efficiency.

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims (8)

1. The welding mechanical arm is characterized by comprising a base, a rotating mechanism, a rack and a mechanical arm mechanism;

the machine frame is arranged on the base through the rotating mechanism, a driving mechanism for driving the mechanical arm mechanism to move is arranged on the machine frame, the driving mechanism comprises a safety protection device, and the safety protection device monitors the internal temperature of the driving mechanism in real time;

The mechanical arm mechanism comprises a mechanical arm, a transmission arm is rotatably connected to the mechanical arm, and a welding device is rotatably connected to the transmission arm;

The welding device comprises a welding head mounting plate and a plurality of welding head assemblies arranged on the welding head mounting plate, wherein the welding head assemblies are uniformly distributed on the welding head mounting plate and comprise a welding head, an X-axis sliding block, a Y-axis sliding block, a Z-axis sliding block and an X-axis rotating sliding block, the Y-axis sliding block is connected to the welding head mounting plate, the X-axis sliding block is connected to the Y-axis sliding block, the Z-axis sliding block is connected to the X-axis sliding block, and the welding head is connected with the Z-axis sliding block through the X-axis rotating sliding block;

The welding device is connected with the controller;

The rotating mechanism comprises a servo motor, a speed reducer and a slewing bearing, wherein the servo motor is installed in the frame, an output shaft of the servo motor is coaxial with an input shaft of the speed reducer, and an output shaft of the speed reducer is connected with the base through the slewing bearing.

2. The welding robot as recited in claim 1, wherein said Y-axis slider includes a Y-axis fixed plate disposed on said bond head mounting plate, a Y-axis screw rotatably disposed on said Y-axis fixed plate, a Y-axis adapter plate slidably disposed on said Y-axis screw, and a Y-axis motor for driving said Y-axis screw to rotate.

3. The welding robot as recited in claim 2, wherein said X-axis slider includes an X-axis fixed plate disposed on said Y-axis adapter plate, an X-axis screw rotatably disposed on said X-axis fixed plate, an X-axis adapter plate slidably disposed on said X-axis screw, and an X-axis motor for driving said X-axis screw to rotate.

4. A welding robot as claimed in claim 3, wherein the Z-axis slider comprises a Z-axis fixing plate provided on the X-axis adapter plate, a Z-axis screw provided rotatably on the Z-axis fixing plate, a Z-axis adapter plate provided slidably on the Z-axis screw, and a Z-axis motor for driving the Z-axis screw to rotate.

5. The welding robot as recited in claim 4, wherein said X-rotation slider includes a rotation stage disposed on said Z-axis adapter plate, said welding head disposed on said rotation stage for rotation with said rotation stage, and an X-rotation motor disposed on said rotation stage for adjusting a rotation amplitude.

6. The welding robot as recited in claim 1, wherein said drive mechanism is a cylinder or a motor.

7. The welding robot as recited in claim 1, wherein said controller is a PLC controller.

8. An automotive welding line comprising a feed line and a welding robot as claimed in any one of claims 1 to 7.