A cantilevered rotatable intelligent welding device based on double-sided double arc

Abstract

This utility model provides a cantilevered rotatable intelligent welding device based on a double-sided double-arc design, relating to the field of welding and cutting technology. The cantilevered rotatable intelligent welding device includes: a track, positioned beside the worktable; a base, positioned on the track, for reciprocating movement along the track; a column, fixed to the base; a cantilever, positioned on top of the column, rotatably connected to the column; a driver, positioned at the rotatable connection between the cantilever and the column, for driving the cantilever to rotate around the column; and a welding robot, positioned at the cantilever. By simply rotating the cantilever to a position parallel to the track, i.e. above the track, using the driver, the space above the worktable is free from any interference or obstruction, improving the efficiency of workpiece lifting and assembly while avoiding safety hazards caused by personnel working below the cantilever.

Description

Technical Field

[0001] This utility model relates to the field of welding and cutting technology, and more specifically, to a cantilevered rotatable intelligent welding device based on double-sided double arcs. Background Technology

[0002] In welding production lines, automated and intelligent welding equipment is widely used to improve welding efficiency. Especially in assembly welding, a cantilever structure is usually adopted, with multiple independently moving welding robots installed below it. That is, robotic arms work with welding torches. Usually, two welding robots are set up. The two welding robots can perform welding separately or cooperate with each other to perform double-sided double-arc welding. The cantilever is driven to move back and forth by a base on a track, which expands the welding range of the welding robots to meet the welding needs of large workpieces and multiple positions.

[0003] However, because the cantilever is always positioned horizontally above the worktable, it causes significant interference with the multiple welding robots below it during workpiece hoisting, manual repair and grinding, and workpiece assembly. The cantilever needs to be moved to a considerable distance to ensure the smooth hoisting of large workpieces and the safety of personnel operating around the worktable. After completing these auxiliary tasks, the cantilever needs to be slowly moved back to its working position. This results in low operating efficiency of the welding equipment on the production line. Utility Model Content

[0004] Therefore, this utility model provides a cantilevered rotatable intelligent welding device based on double-sided double arc, comprising: The track is located next to the workbench; A base is disposed on the track, and the base is used to reciprocate along the track; The column is fixed to the base; A cantilever is provided at the top of the column, and the cantilever is rotatably connected to the column; A driver, disposed at the rotatable connection between the cantilever and the column, is used to drive the cantilever to rotate about the column; and A welding robot is mounted on the cantilever.

[0005] Optionally, the column is a shell structure, and a side through hole is provided on the side wall of the column, the side through hole communicating with a cavity inside the column. The cantilever has a top through hole on its top surface, which is located above the column and communicates with a cavity inside the column. The base is provided with a wire loading tube for loading welding wire. The welding wire extends from the wire loading tube and enters the cavity inside the column through the side through hole. The welding wire then extends from the top through hole through the cantilever and is installed at the welding gun of the welding robot.

[0006] Optionally, a bracket is provided at the top of the cantilever, the welding wire is suspended on the bracket, and the side through hole is opened along the extension direction of the track.

[0007] Optionally, both the top through hole and the side through hole are provided with nylon sleeves, and the welding wires pass through the nylon sleeves.

[0008] Optionally, there are two welding robots, each located on one long side of the cantilever, and the two welding robots are used for double-sided double-arc welding.

[0009] Optionally, the welding robot includes a movable base, a robotic arm, a welding torch, and a vision detector. The movable base is slidably connected to the cantilever via a linear track. The robotic arm is disposed at the bottom of the movable base, and the welding torch and the vision detector are disposed at the end of the robotic arm. The top surface of the movable base has an installation through hole, and the welding wire enters the installation through hole from the top through hole and then connects to the welding gun.

[0010] Optionally, the driver includes a servo motor and a gear transmission component disposed on the top of the column, wherein the servo motor causes the cantilever to rotate via the gear transmission component.

[0011] Optionally, the intelligent welding equipment further includes a limiting block, a rotating block, an inductive switch, and a controller. The limiting block and the inductive switch are both fixed to the top of the column, and the rotating block is fixed to the bottom of the cantilever. The limiting block is located at the rotation end point of the rotating block and is used to prevent the rotating block from rotating. The inductive switch is located on the rotation path of the rotating block and is triggered by the rotating block. The servo motor and the inductive switch are respectively connected to the controller.

[0012] Optionally, a torque sensor is provided at the output shaft of the servo motor, and the torque sensor is connected to the controller.

[0013] Optionally, there are multiple worktables arranged in pairs, with the pairs of worktables arranged sequentially along the extension direction of the track, and the track positioned between each pair of worktables. The base, the column, the cantilever, the driver, and the welding robot constitute a mobile welding workstation, and multiple welding workstations are arranged on the track.

[0014] The technical effects of this utility model include at least the following: In the processes of workpiece hoisting and unloading, manual repair and grinding, and workpiece assembly, this utility model eliminates the need for the base to drive the cantilever to move back and forth. Instead, the driver rotates the cantilever to a position parallel to the track, above the track, ensuring unobstructed space above the worktable. This improves the efficiency of workpiece hoisting and assembly while avoiding safety hazards caused by personnel working below the cantilever. Furthermore, after completing the aforementioned auxiliary work, there is no need to move the base. The driver simply repositions the cantilever horizontally above the worktable, and the base is slightly moved along the track as needed for welding. The welding robot then performs the corresponding welding operation, or performs double-sided double-arc welding, in conjunction with appropriate visual inspection equipment. This significantly reduces the downtime of the intelligent welding equipment and greatly increases its utilization rate, thereby improving the overall operating efficiency of the welding equipment. Attached Figure Description

[0015] Figure 1 This is a schematic structural diagram of the intelligent welding equipment according to a specific embodiment of the present utility model; Figure 2 Another schematic structural diagram of the intelligent welding equipment described in this utility model is shown in a specific embodiment. Figure 3 This is a schematic structural diagram of the top of the column of the intelligent welding equipment according to a specific embodiment of the present utility model. Figure 4 A schematic top view of the intelligent welding equipment according to a specific embodiment of this utility model; Figure 5 This is another schematic top view of the intelligent welding equipment described in a specific embodiment of the present invention. Detailed Implementation

[0016] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the embodiments of this utility model. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it. Embodiments of this utility model can be implemented in many ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0017] It is understood that the terms "first," "second," etc., used in this utility model may be used to describe various technical terms herein, but should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. However, unless specifically stated otherwise, these technical terms are not limited by these terms. These terms are only used to distinguish one technical term from another. For example, without departing from the scope of this utility model, the first receiving device and the second receiving device are different receiving devices, the first surface and the second surface are different surfaces, and the first plane, the second plane, the third plane, and the fourth plane are different planes. In the description of the embodiments of this utility model, "a plurality of" or "several" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0018] In addition, in the attached figures, the Z-axis represents the vertical direction, that is, the up-down direction, and the positive direction of the Z-axis (that is, the direction the arrow points to) represents up, and the negative direction of the Z-axis (that is, the direction opposite to the positive direction of the Z-axis) represents down; in the attached figures, the X-axis represents the longitudinal direction, that is, the front-back direction, and the positive direction of the X-axis (that is, the direction the arrow points to) represents forward, and the negative direction of the X-axis (that is, the direction opposite to the positive direction of the X-axis) represents backward; in the attached figures, the Y-axis represents the transverse direction, that is, the left-right direction; it should also be noted that the aforementioned representation of the X, Y, and Z axes is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] In the description of the embodiments of this utility model, unless otherwise expressly specified and limited, the terms "installation," "connection," "setting," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model according to the specific circumstances.

[0020] In the description of the embodiments of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the horizontal height of the first feature is higher than the horizontal height of the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0021] It should be noted that when a component is referred to as "fixed to" or "set on" another component, or similar terms such as "fixed to" or "set on," it can be directly on the other component or may have an intervening component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or may have an intervening component.

[0022] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0023] See Figures 1 to 5 This embodiment provides a cantilevered rotatable intelligent welding device based on double-sided double arcs, including: Track 1 is located next to workbench 12; A base 13 is disposed on the track 1, and the base 13 is used to reciprocate along the track 1; The column 2 is fixed on the base 13; A cantilever 3 is disposed at the top of the column 2, and the cantilever 3 is rotatably connected to the column 2; A driver, disposed at the rotatable connection between the cantilever 3 and the column 2, is used to drive the cantilever 3 to rotate around the column 2; and A welding robot 4 is mounted on the cantilever 3. When there are two welding robots 4, they can be used for double-sided double-arc welding.

[0024] It should be noted that the cantilever 3 here can rotate 360 ​​degrees, or rotate 180 degrees back and forth, or rotate 90 degrees back and forth, as long as it can rotate and move away from the worktable 12.

[0025] In addition, visual inspection devices can be installed at welding robot 4 and cantilever 3 respectively. The welding status of welding robot 4 can be detected in real time and corresponding adjustments can be made to achieve intelligent autonomous welding.

[0026] In addition, the base can move on the track via a gear and rack system in conjunction with a drive motor.

[0027] In addition, there can be two welding robots 4. The two welding robots 4 can cooperate with each other to perform double-sided double-arc welding, or they can each perform their respective welding tasks independently.

[0028] In the process of workpiece hoisting and unloading, manual repair and grinding, and workpiece assembly, this embodiment does not require the base 13 to drive the cantilever 3 to move back and forth. Instead, the cantilever 3 is rotated to a position parallel to the track 1, i.e., above the track 1, by the driver. This ensures that there is no interference or obstruction in the space above the worktable 12, which improves the efficiency of workpiece hoisting and assembly and avoids the safety hazards caused by personnel working below the cantilever 3. Moreover, after completing the above auxiliary work, there is no need to move the base 13. The driver is simply used again to position the cantilever 3 horizontally above the worktable 12, and the base 13 is moved slightly along the track 1 according to welding needs. Then, the welding robot 4, in conjunction with the corresponding visual inspection equipment, performs the corresponding welding operation or performs double-sided double-arc welding, thereby significantly reducing the downtime of the intelligent welding equipment and greatly improving its utilization rate. This improves the operating efficiency of the welding equipment.

[0029] See Figures 1 to 5 Furthermore, the column 2 is a shell structure, and a side through hole 21 is provided on the side wall of the column 2, the side through hole 21 communicating with the cavity inside the column 2. The cantilever 3 has a top through hole 32 on its top surface. The top through hole 32 is located above the column 2 and communicates with a cavity inside the column 2. The base 13 is provided with a wire loading tube 7 for loading welding wire 6. The welding wire 6 extends out of the wire loading tube 7 and enters the cavity inside the column 2 through the side through hole 21. The welding wire 6 then extends out of the cantilever 3 through the top through hole 32 and is installed at the welding gun 44 of the welding robot 4.

[0030] Since the welding wire 6 needs to pass through the column 2 and the cantilever 3 from the wire loading tube 7 on the base 13 to the welding robot 4, considering that the reciprocating rotation of the cantilever 3 will cause the welding wire 6 at the connection between the column 2 and the cantilever 3 to be repeatedly bent and stretched, affecting the welding stability of the welding gun 44, and even causing the welding wire 6 to break or be pulled apart.

[0031] Therefore, in this embodiment, the welding wire 6 is passed through the side through hole 21 at the column 2 and then extends out from the top through hole 32 above the column 2, so that the welding wire 6 is always close to the center of gravity of the column 2, which serves as the rotating shaft. This prevents the welding wire 6 from getting tangled at the connection between the column 2 and the crossbeam, ensuring the stability of the welding wire 6 delivery and the welding quality, and allowing the welding wire 6 to reach the welding gun 44 smoothly and steadily.

[0032] See Figures 1 to 5 Furthermore, a bracket 31 is provided at the top of the cantilever 3, the welding wire 6 is suspended on the bracket 31, and the side through hole 21 is opened along the extension direction of the track 1.

[0033] The welding wire 6 above the cantilever 3 is suspended by the bracket 31 to prevent it from getting tangled in the welding robot 4 or other equipment. Furthermore, the side through-hole 21 is opened along the extension direction of the track 1, effectively preventing the welding wire 6 from being bent by one end of the rotating cantilever 3 during the left-right swinging of the cantilever 3, allowing the welding wire 6 to smoothly enter the column 2.

[0034] See Figures 1 to 5 Furthermore, a cable inspection hole is provided on the side of one end of the cantilever 3, and the top through hole 32 is provided near one end of the cantilever 3, and the cable inspection hole is connected to the top through hole 32.

[0035] Use the cable inspection hole to periodically check the entry of welding wire 6 into cantilever 3.

[0036] See Figures 1 to 5 Furthermore, both the top through hole 32 and the side through hole 21 are provided with nylon sleeves, and the welding wire 6 passes through the nylon sleeves.

[0037] A nylon sleeve is used to prevent the outer sheath of welding wire 6 from being scratched by the sharp edges of the hole wall.

[0038] See Figures 1 to 5 Furthermore, there are two welding robots 4, each of which is located on one long side of the cantilever 3. The welding robot 4 includes a movable base 41, a robotic arm 43, a welding torch 44, and a vision detector. The movable base 41 is slidably connected to the cantilever 3 via a linear track 1. The robotic arm 43 is disposed at the bottom of the movable base 41, and the welding torch 44 and the vision detector are disposed at the end of the robotic arm 43. The top surface of the movable base 41 is provided with an installation through hole 42, and the welding wire 6 enters the installation through hole 42 through the top through hole 32 and then connects to the welding gun 44.

[0039] Alternatively, the movable seat can also achieve relative cantilever movement through the engagement of gears and racks and the drive motor.

[0040] See Figures 1 to 5 Furthermore, the driver includes a servo motor and a gear transmission component 22 disposed on the top of the column 2, wherein the servo motor causes the cantilever 3 to rotate through the gear transmission component 22.

[0041] Preferably, the gear transmission component 22 may include a large gear and a small gear. The large gear is located at the bottom of one end of the cantilever 3, and the small gear is connected to the output shaft of the servo motor. The large gear and the small gear mesh with each other. The servo motor drives the small gear to rotate, which in turn drives one end of the cantilever 3 to rotate, thereby realizing the rotation of the cantilever 3 relative to the column 2.

[0042] See Figures 1 to 5 Furthermore, the intelligent welding equipment also includes a limiting block 51, a rotating block 52, an induction switch 53, and a controller. The limiting block 51 and the induction switch 53 are both fixed to the top of the column 2, and the rotating block 52 is fixed to the bottom of the cantilever 3. The limiting block 51 is disposed at the rotation end point of the rotating block 52. The limiting block 51 is used to prevent the rotating block 52 from rotating. The inductive switch 53 is disposed on the rotation path of the rotating block 52. The inductive switch 53 is used to be triggered by the rotating block 52. The servo motor and the inductive switch 53 are respectively connected to the controller.

[0043] During the rotation of the cantilever 3 driven by the servo motor, the rotating block 52 rotates with one end of the cantilever 3 and first passes through the induction switch 53 and triggers it. After receiving the trigger signal from the induction switch 53, the controller causes the servo motor to reduce its speed, thereby slowing down the cantilever 3 and causing the cantilever 3 to slowly rotate towards the preset position. When it reaches the preset position, it is blocked by the limit block 51. When the rotating block 52 is blocked, it causes the cantilever 3 to stop rotating.

[0044] This prevents the cantilever 3 from suddenly decelerating and failing to stop effectively when it reaches the preset position due to excessive weight of the cantilever 3 and welding robot 4, thus preventing the cantilever 3 from hovering in the wrong position.

[0045] Preferably, the pre-examination position is that the cantilever 3 is horizontal above the workbench 12, and the cantilever 3 is perpendicular to the extension direction of the track 1.

[0046] Preferably, there can be two limit blocks 51 and inductive switches 53, which are respectively arranged on the left and right sides of the column 2. The two limit blocks 51 respectively limit the cantilever 3 to swing 90° to the left and right sides. And each inductive switch 53 is arranged in front of the corresponding limit block 51.

[0047] See Figures 1 to 5 Furthermore, a torque sensor is provided at the output shaft of the servo motor, and the torque sensor is connected to the controller.

[0048] The torque sensor is used to detect the output torque of the servo motor in real time. When the cantilever 3 rotates, the torque of the servo motor increases, and when the cantilever 3 stops rotating, the output torque of the servo motor decreases. At this time, the controller detects the output torque of the servo motor in real time through the torque sensor and keeps the servo motor in a set torque output state, so that the teeth between the corresponding gear transmission components 22 remain in a meshing state, eliminating the tooth backlash of the gear transmission components 22. This prevents the cantilever 3 from shaking or slightly swaying due to the tooth backlash of the gear transmission components 22 during the operation of the welding robot 4, which would affect the welding positioning accuracy and welding precision.

[0049] See Figures 1 to 5 Furthermore, there are multiple worktables 12, and the multiple worktables 12 are arranged in pairs. The multiple pairs of worktables 12 are arranged sequentially along the extension direction of the track 1. The track 1 is set between each pair of worktables 12. The base 13, the column 2, the cantilever 3, the driver and the welding robot constitute a mobile welding workstation. The multiple welding workstations are arranged on the track 1.

[0050] To improve the working efficiency of the welding equipment, multiple workstations can be set up, and multiple worktables 12 can be set on the left and right sides of the track 1 respectively, so as to increase the working efficiency of the entire intelligent welding equipment.

[0051] Although the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A cantilevered rotatable intelligent welding device based on double-sided double arcs, characterized in that, include: The track is located next to the workbench; A base is disposed on the track, and the base is used to reciprocate along the track; The column is fixed to the base; A cantilever is provided at the top of the column, and the cantilever is rotatably connected to the column; A driver is provided at the rotatable connection between the cantilever and the column, and the driver is used to drive the cantilever to rotate around the column; as well as A welding robot is mounted on the cantilever.

2. The intelligent welding equipment according to claim 1, characterized in that, The column has a shell structure, and a side through hole is provided on the side wall of the column, which communicates with the cavity inside the column. The cantilever has a top through hole on its top surface, which is located above the column and communicates with a cavity inside the column. The base is provided with a wire loading tube for loading welding wire. The welding wire extends from the wire loading tube and enters the cavity inside the column through the side through hole. The welding wire then extends from the top through hole through the cantilever and is installed at the welding gun of the welding robot.

3. The intelligent welding equipment according to claim 2, characterized in that, The top of the cantilever is provided with a bracket, the welding wire is suspended on the bracket, and the side through hole is opened along the extension direction of the track.

4. The intelligent welding equipment according to claim 2, characterized in that, The walls of both the top through hole and the side through hole are fitted with nylon sleeves, and the welding wires pass through the nylon sleeves.

5. The intelligent welding equipment according to claim 1, characterized in that, There are two welding robots, each of which is located on one long side of the cantilever. The two welding robots are used for double-sided double-arc welding.

6. The intelligent welding equipment according to claim 2, characterized in that, The welding robot includes a movable base, a robotic arm, a welding torch, and a vision detector. The movable base is slidably connected to the cantilever via a linear track. The robotic arm is located at the bottom of the movable base, and the welding torch and the vision detector are located at the end of the robotic arm. The top surface of the movable base has an installation through hole, and the welding wire enters the installation through hole from the top through hole and then connects to the welding gun.

7. The intelligent welding equipment according to claim 1, characterized in that, The driver includes a servo motor and a gear transmission component mounted on the top of the column, wherein the servo motor rotates the cantilever via the gear transmission component.

8. The intelligent welding equipment according to claim 7, characterized in that, The intelligent welding equipment further includes a limiting block, a rotating block, an inductive switch, and a controller. The limiting block and the inductive switch are both fixed to the top of the column, and the rotating block is fixed to the bottom of the cantilever. The limiting block is located at the rotation end point of the rotating block and is used to prevent the rotating block from rotating. The inductive switch is located on the rotation path of the rotating block and is triggered by the rotating block. The servo motor and the inductive switch are respectively connected to the controller.

9. The intelligent welding equipment according to claim 8, characterized in that, A torque sensor is installed at the output shaft of the servo motor, and the torque sensor is connected to the controller.

10. The intelligent welding equipment according to any one of claims 1 to 9, characterized in that, The worktables are multiple, arranged in pairs, with each pair of worktables sequentially arranged along the extension direction of the track, and the track is positioned between each pair of worktables. The base, the column, the cantilever, the driver, and the welding robot constitute a mobile welding workstation, and multiple welding workstations are arranged on the track.

Images