CN114939767A

CN114939767A - Large-diameter elbow welding turnover device

Info

Publication number: CN114939767A
Application number: CN202210601645.5A
Authority: CN
Inventors: 赵小如
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-08-26

Abstract

The invention provides a large-diameter elbow welding turnover device which comprises an elbow welding turnover mechanism and an elbow mechanism. The elbow welding turnover mechanism and the elbow mechanism are movably connected. The pipe bending mechanism comprises a first short straight pipe, a first welding line, a bent pipe, a second welding line and a second short straight pipe. The first short straight pipe is connected with the bent pipe in a welding mode, and the bent pipe is connected with the second short straight pipe in a welding mode. The invention is used for completing 180-degree turnover of bent pipe components with different calibers during robot welding, and realizes continuous automatic welding of 360-degree welding seams by matching with the welding motion of the robot, and the welding seams have high precision and attractive appearance.

Description

Large-diameter elbow welding turnover device

Technical Field

The invention relates to the field of welding processing, in particular to a large-diameter elbow welding turnover device.

Background

In the energy field such as the industries of resident heat supply, petroleum, chemical industry and the like, a large number of large-diameter metal pipelines are needed to be used, the pipelines usually form a pipe network by welding or flange connection of 90-degree bent pipe components and long straight pipes on site, for the convenience of site construction and some functional requirements, the bent pipe is formed by welding two sections of shorter straight pipes and 90-degree quarter arc bent pipes by workers in a factory, and the welding method has the advantages of unstable welding seam quality, low welding seam precision, unattractive forming, high production cost and great personal injury.

Disclosure of Invention

According to the technical problem, the invention provides a large-caliber elbow welding turnover device which is characterized by comprising an elbow welding turnover mechanism and an elbow mechanism. The elbow welding turnover mechanism is movably connected with the elbow mechanism.

The pipe bending mechanism comprises a first short straight pipe, a first welding line, a bent pipe, a second welding line and a second short straight pipe. The first short straight pipe is connected with the bent pipe in a welding mode, and the bent pipe is connected with the second short straight pipe in a welding mode.

The elbow welding turnover mechanism comprises an upright unit, a fixed base plate and a turnover arm, wherein the upright unit is arranged on the fixed base plate, and the upright unit is rotatably connected with the turnover arm.

The stand unit includes gear pair, rotatory servo motor, removes vice, up-and-down motion servo motor, rolling disc, saddle and activity aligning clamping jaw. The stand unit is provided with how setting up of up-and-down motion servo motor, up-and-down motion servo motor is provided with the sliding pair, sliding pair and saddle fixed connection. The sliding saddle is provided with a rotary servo motor, the rotary servo motor is meshed with a gear pair, and the gear pair is fixedly connected with the rotating disc. And the rotating disc is provided with a movable aligning clamping jaw.

The turning arm is fixedly connected with the rotating disc and is in sliding connection with the guide rail pair 16; the overturning arm is provided with a positioning table and a sliding groove, and the positioning table is connected with the sliding groove in a sliding mode.

The beneficial effects of the invention are as follows:

the invention is used for completing 180-degree turnover of bent pipe components with different calibers during robot welding, and realizes continuous automatic welding of 360-degree welding seams by matching with the welding motion of the robot, and the welding seams have high precision and attractive appearance.

According to the invention, the turning disc is arranged on the turning arm, and the turning arm can move along the guide rail pair; the positioning table arranged on the turnover arm can move along the sliding groove vertical to the guide rail pair. The two-direction movement can make the elbow welding turnover device adapt to elbow components with different calibers.

When automatically welding a first welding seam, the elbow welding turnover mechanism lifts the elbow component to the highest position and is in a horizontal position, the robot starts welding from the point A, in the welding process, the robot installed above the elbow welding turnover mechanism drives the welding tool to move 180 degrees along the first welding seam clockwise to the point B on the surface of the elbow component, the elbow welding turnover mechanism rotates 180 degrees anticlockwise on the elbow component, so that the 360-degree continuous welding of elbow component welding seams with different calibers in the whole circle can be realized.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a pipe bending and turning mechanism according to the present invention;

FIG. 3 is a schematic view of the present invention in a low position;

FIG. 4 is a schematic view of the present invention in an installed and welded position;

fig. 5 is a schematic view of the welding initiation state of the present invention.

FIG. 6 is a schematic view showing a welding end state of the present invention.

Reference numerals are as follows: 1. the bent pipe is welded with the turnover mechanism; 2. a first short straight pipe; 3. a first weld; 4. bending the pipe; 5. a second weld; 6. a second short straight pipe; 7. a column; 8. a gear pair; 9. rotating the servo motor; 10. a sliding pair; 11. a servo motor moving up and down; 12. fixing the bottom plate; 13. rotating the disc; 14. a saddle; 15. a turning arm; 16. a guide rail pair; 17. a movable aligning clamping jaw; 18. a positioning table; 19. a chute; 20. a bent pipe member; 21. a point A; 22. and B, point.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention:

example 1

When in use, the fixed bottom plate 12 is provided with a column unit, and the column unit 7 is rotationally connected with the turnover arm 15.

The upright post unit 7 comprises a gear pair 8, a rotary servo motor 9, a moving pair 10, an up-and-down motion servo motor 11, a rotating disc 13, a sliding saddle 14 and a movable aligning clamping jaw 17.

Four up-and-down motion servo motors 11 arranged on the two upright post units 7 drive the sliding pairs 10 to drive the sliding saddle 14 to move up and down, so that the rotating disc 13 arranged on the sliding saddle 14 can be positioned at two high and low positions, the bent pipe component 20 is conveniently and manually arranged at the low position, and the high position is used for turning over when the robot welds.

The rotary servo motor 9 on the saddle 14 drives the gear pair 8, so that the rotating disc 13 makes a turning motion, and the rotating disc 13 is provided with a movable aligning clamping jaw 17 for clamping bent pipe components 20 with different calibers.

The two groups of rotating discs 13 are connected into a whole by the turning arm 15, and the turning arm 15 can move along a guide rail pair 16 arranged on the two groups of rotating discs 13; a positioning table 18 mounted on the tilting arm 15 can be moved along a slide groove 19 perpendicular to the guide rail pair 16. The two-direction movement can make the elbow welding turnover device adapt to elbow components with different calibers.

The working principle is as follows:

in use, the four up-and-down motion servo motor drives 11 mounted on the two columns 7 drive the moving pair 10 to drive the saddle 14 to move up and down, so that the rotating disc 13 mounted on the saddle 14 can be located at two positions, i.e. high and low positions, as shown in fig. 4 and 5. The low position is convenient for manually installing the elbow pipe component, and the high position is used for turning over when the robot welds.

The rotary servo motor 9 on the saddle 14 drives the gear pair 8, so that the rotary disk 13 makes a turning motion. At least 3 groups (4 groups on the way) of movable aligning clamping jaws 17 are arranged on the rotating disc 13 and used for clamping elbow components with different calibers.

The two groups of rotating discs 13 are connected into a whole by the turning arm 15, and the turning arm 15 can move along a guide rail pair 16 arranged on the two groups of rotating discs 13; a positioning table 18 mounted on the tilting arm 15 is movable perpendicular to a slide groove 19 along the guide rail pair 16. The two-direction movement can make the elbow welding turnover device adapt to elbow components with different calibers.

Before the robot automatic weld, install two sections short straight pipes and 90 quarter circular arc return bends 4 by the manual work and be fixed in return bend welding tilting mechanism 1 to accomplish backing weld, during automatic weld, return bend welding tilting mechanism 1 cooperates the robot and accomplishes the welding of first welding seam 3 earlier, then turns around and accomplishes the welding of second welding seam 5.

When automatically welding the first welding seam 3, the elbow welding turnover mechanism 1 raises the elbow component 20 to the highest position and is in a horizontal position, the robot starts welding from the point A21, in the welding process, the robot arranged above the elbow welding turnover mechanism 1 drives the welding tool to move 180 degrees clockwise to the point B22 along the first welding seam 3 on the surface of the elbow component 20, the elbow component 20 of the elbow welding turnover mechanism 1 turns 180 degrees anticlockwise, and therefore continuous welding of 360-degree whole-circle welding seams can be achieved.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. While the invention has been described with respect to the above embodiments, it will be understood by those skilled in the art that the invention is not limited to the above embodiments, which are described in the specification and illustrated only to illustrate the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A large-diameter elbow welding turnover device is characterized by comprising an elbow welding turnover mechanism and an elbow mechanism, wherein the elbow welding turnover mechanism is movably connected with the elbow mechanism;

the pipe bending mechanism comprises a first short straight pipe, a first welding seam, a bent pipe, a second welding seam and a second short straight pipe, wherein the first short straight pipe is connected with the bent pipe in a welding manner, the bent pipe is connected with the second short straight pipe in a welding manner, the welding joint of the first short straight pipe and the bent pipe is the first welding seam, and the welding joint of the bent pipe and the second short straight pipe is the second welding seam;

the elbow welding turnover mechanism comprises upright post units, a fixed base plate and turnover arms, wherein the upright post units are arranged on the fixed base plate, the upright post units are divided into two groups, and the two groups of upright post units are connected in a rotary mode through the turnover arms.

2. The large-caliber elbow welding turnover device according to claim 1, wherein the upright unit comprises an upright, a gear pair, a rotary servo motor, a moving pair, a vertical movement servo motor, a rotating disc, a saddle and a movable centering clamping jaw, the vertical movement servo motor is arranged on the upper side of the upright, the vertical movement servo motor is connected with the moving pair, the moving pair is fixedly connected with the saddle, the rotary servo motor is arranged on the saddle, the rotary servo motor is meshed with the gear pair and is fixedly connected with the rotating disc, and the movable centering clamping jaw is arranged on the rotating disc.

3. The large-caliber elbow welding turnover device according to claim 1, wherein the turnover arm is connected with the rotating disc, and the turnover arm is slidably connected with the guide rail pair; the overturning arm is provided with a positioning table and a sliding groove, and the positioning table is connected with the sliding groove in a sliding mode.