Narrow gap welding device and welding method
By adopting a combination of rotating and telescopic arms in intelligent welding equipment, combined with a long welding gun support arm, the flexible movement and linear movement of the welding gun are achieved, which solves the problem of poor flexibility in using narrow gap welding equipment and the inability to weld the ends, improving Welding efficiency and convenience.
Patent Information
- Application Number
- CN202411419554.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2024-12-13
AI Technical Summary
When performing narrow gap welding, existing intelligent welding equipment is large in size and poor in use. Especially when the box mouth is small and the weld is long, it is difficult to complete the welding, and the lengthening arm cannot telescope and rotate, resulting in welding. Disadvantages of not being welded at seam ends.
A narrow gap welding device is designed, using the swing of the rotary arm and the telescopic combination of the telescopic arm, combined with the long welding gun support arm, the flexible movement and linear movement of the welding gun are realized through the rotary driving unit and the telescopic driving unit, and the motion controller is used. The linked motor controls rotation and expansion to ensure that the welding gun can be inserted into a narrow gap and completes welding.
It improves the welding convenience of narrow gaps and internal welds of the box, enhances the flexibility of using the welding gun, ensures complete welding of the weld ends, and solves the problems of poor use flexibility and inability to weld ends in the prior art.
Smart Images
Figure CN119115324A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of narrow gap welding, in particular to a narrow gap welding device and a welding method. Background Art
[0002] With the progress of society and the development of new technologies, the model of enterprise development has gradually changed from labor-intensive to technology-intensive. All segments are in urgent need of upgrading and transforming production technology. With the rapid development of new technologies such as automation and intelligence of welding equipment, more and more intelligent welding is being used. At present, intelligent welding equipment generally uses robots to drive the welding gun to move for welding, which has good flexibility. However, due to the large size of the robot arm, it is not conducive to welding of narrow gaps. Some equipment also uses extended arms to weld narrow seams, but extended arms generally cannot be extended or rotated, and have poor flexibility. When the box opening is small and the weld is long, there will be a disadvantage that the weld end cannot be welded. Summary of the invention
[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a narrow gap welding device and a welding method. The device has a longer welding gun support arm. Through the swing of the rotating arm and the telescopic coordination of the telescopic arm, the welding gun has good flexibility in use and can achieve linear movement, thereby greatly improving the convenience of welding narrow gaps and welds inside the box, and can effectively solve the problems in the background technology.
[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: a narrow gap welding device and a welding method, comprising a connecting seat, a telescopic driving unit and a rotating driving unit; Connecting seat: an extension arm is provided on its lower surface, the lower end of the extension arm is rotatably connected to two rotating shafts, the two rotating shafts are fixedly connected to the upper end of the rotating arm, the inside of the rotating arm is slidably connected to a telescopic arm, the lower end of the telescopic arm is provided with a welding gun, the input end of the welding gun is electrically connected to the output end of an external welding machine; Telescopic drive unit: used to drive the movement of the telescopic arm; Rotation drive unit: used to drive the rotation of the rotating arm. It has a longer welding gun support arm, which makes it easier for the welding gun to be inserted into the weld inside a narrow gap. When translational welding is limited, the rotating arm can be swung and the telescopic arm can be extended at the same time. The welding gun has good flexibility and can move in a straight line, which greatly improves the convenience of welding in narrow gaps and welds inside the box.
[0005] Furthermore, it also includes a motion controller, which is located on the right side of the rotating arm. The input end of the motion controller is electrically connected to an external power supply to facilitate the control of the electrical appliance.
[0006] Furthermore, the telescopic drive unit includes a screw seat, a screw and a screw nut. The screw seat is arranged at the upper end inside the rotating arm, the middle part of the screw seat is rotatably connected with the screw, and the screw nut is arranged at the upper end inside the telescopic arm. The screw and the screw nut are threadedly connected to facilitate the control of the telescopic arm's extension and retraction.
[0007] Furthermore, the telescopic drive unit also includes a motor 1, a transmission shaft and a universal coupling. The motor 1 is arranged on the right side of the upper surface of the connecting seat. The lower end of the motor 1 extends to the interior of the extension arm and is provided with a transmission shaft. The lower end of the transmission shaft is provided with a universal coupling. The lower end of the universal coupling is fixedly connected to the upper end of the screw rod. The input end of the motor 1 is electrically connected to the output end of the motion controller to facilitate the rotation of the driving screw rod.
[0008] Furthermore, the rotation drive unit includes a mounting seat, a worm and a worm wheel. The mounting seat is arranged at the lower end of the right side of the extension arm. The middle part of the mounting seat is rotatably connected with the worm. The right end of the rotating shaft on the right side is provided with a worm wheel. The worm and the worm wheel are meshingly connected to facilitate the control of the swing of the rotating arm.
[0009] Furthermore, the driving unit also includes motor 2, which is arranged at the upper end of the front side of the extension arm. The output shaft of motor 2 is fixedly connected to the upper end of the worm, and the input end of motor 2 is electrically connected to the output end of the motion controller to facilitate the rotation of the worm.
[0010] Furthermore, a protective shell is provided inside the mounting seat, and the lower end of the worm and the worm wheel are both located inside the protective shell. A protective tube is provided on the upper surface of the mounting seat, and the upper end of the worm and the output shaft of motor 2 are both located inside the protective tube, providing protection for the internal components.
[0011] A welding method of a narrow gap welding device comprises the following steps: S1: Install the connection base on the robot arm, and connect the welding gun to the welding machine; S2: Using its own retractable telescopic arm to extend the welding gun into the weld; S3: The connecting seat moves horizontally to drive the welding gun to move to achieve linear welding S4: When the end of the weld cannot be reached by only using the connecting seat for translation welding, the motion controller controls motor 1 and motor 2 in linkage, the rotating arm rotates to drive the welding gun to move in a circle, and at the same time the telescopic arm telescopes to adjust the rotating radius of the welding gun, controlling the welding gun to weld in a straight line, and completing the welding of the end of the weld.
[0012] Compared with the prior art, the beneficial effects of the present invention are: the narrow gap welding device and welding method have the following advantages: It has a long welding gun support arm, which makes it easy to insert the welding gun into the weld inside a narrow gap. When translational welding is limited, the welding gun can be swung by rotating the arm and extended and retracted by the telescopic arm. The welding gun is flexible to use and can move in a straight line, which greatly improves the convenience of welding in narrow gaps and welds inside the box. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention; Figure 3 This is an enlarged structural schematic diagram of location A of the present invention; Figure 4 It is a schematic diagram of the enlarged structure of point B of the present invention.
[0014] In the figure: 1 connecting base, 2 extension arm, 3 rotating shaft, 4 rotating arm, 5 telescopic arm, 6 welding gun, 7 motion controller, 8 telescopic drive unit, 81 screw seat, 82 screw, 83 screw nut, 84 motor 1, 85 transmission shaft, 86 universal coupling, 9 rotating drive unit, 91 mounting base, 92 worm, 93 worm wheel, 94 motor 2, 10 protective shell, 11 protective tube. DETAILED DESCRIPTION
[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0016] See also Figure 1-4 , This embodiment provides a technical solution: a narrow gap welding device and a welding method, comprising a connecting seat 1, a telescopic driving unit 8 and a rotating driving unit 9; Connecting seat 1: An extension arm 2 is provided on its lower surface, and the left end of the connecting seat 1 is fixedly connected to the arm of the robot. During the welding process, the arm of the robot drives the connecting seat 1 to move, and the extension arm 2 provides an installation position for other parts. The lower end of the extension arm 2 is rotatably connected to two rotating shafts 3, and the two rotating shafts 3 are fixedly connected to the upper end of the rotating arm 4. The rotating shaft 3 facilitates the rotational connection between the extension arm 2 and the rotating arm 4. The inside of the rotating arm 4 is slidably connected to a telescopic arm 5. The lower end of the telescopic arm 5 is provided with a welding gun 6, and the input end of the welding gun 6 is electrically connected to the output end of an external welding machine; Telescopic drive unit 8: used to drive the movement of the telescopic arm 5, the telescopic drive unit 8 includes a screw seat 81, a screw 82 and a screw nut 83, the screw seat 81 is arranged at the upper end of the rotating arm 4, the middle part of the screw seat 81 is rotatably connected with the screw 82, the screw nut 83 is arranged at the upper end of the telescopic arm 5, the screw 82 is threadedly connected with the screw nut 83, the telescopic drive unit 8 also includes a motor 84, a transmission shaft 85 and a universal coupling 86, the motor 84 is arranged on the right side of the upper surface of the connecting seat 1, the lower end of the motor 84 extends to the inside of the extension arm 2 and is provided with a transmission shaft 85, the transmission shaft 85 A universal coupling 86 is provided at the lower end, and the lower end of the universal coupling 86 is fixedly connected to the upper end of the screw rod 82. The input end of the motor 84 is electrically connected to the output end of the motion controller 7. When the motor 84 is running, the output shaft of the motor 84 drives the screw rod 82 to rotate through the transmission shaft 85 and the universal coupling 86. The screw rod 82 pushes the screw nut 83 and the telescopic arm 5 to move downward under the support of the screw rod seat 81. During the process of the rotating arm 4 driving the screw rod 82 to swing, the connection of the universal coupling 86 itself can rotate relatively, which can ensure that the screw rod 82 and the transmission shaft 85 can be driven even when there is an axial angle. Rotation drive unit 9: used to drive the rotation of the rotating arm 4, the rotation drive unit 9 includes a mounting seat 91, a worm 92 and a worm wheel 93, the mounting seat 91 is arranged at the lower end of the right side of the extension arm 2, the middle part of the mounting seat 91 is rotatably connected with the worm 92, the right end of the right rotating shaft 3 is provided with a worm wheel 93, the worm 92 is meshed and connected with the worm wheel 93, the drive unit 9 also includes a motor 2 94, the motor 2 94 is arranged at the upper end of the front side of the extension arm 2, the output shaft of the motor 2 94 is fixedly connected to the upper end of the worm 92, the input end of the motor 2 94 is electrically connected to the output end of the motion controller 7, the motor 2 94 drives the worm 92 to rotate, and the worm 92 drives the right rotating shaft through the worm wheel 93 3 rotates, the rotating shaft 3 on the right drives the rotating arm 4 to rotate, the rotating arm 4 drives the telescopic arm 5 and the welding gun 6 to swing synchronously, the motor 1 84 controls the telescopic arm 5 and the welding gun 6 to extend, and the radial length is compensated. The motor 1 84 and the motor 2 94 are controlled in linkage, and then the motion trajectory of the welding gun 6 can be controlled to be a straight line, which is convenient for the welding of the weld inside the box body. A protective shell 10 is provided inside the mounting seat 91, the lower end of the worm 92 and the worm wheel 93 are both located inside the protective shell 10, and a protective tube 11 is provided on the upper surface of the mounting seat 91. The upper end of the worm 92 and the output shaft of the motor 2 94 are both located inside the protective tube 11, and the protective shell 10 and the protective tube 11 protect the internal parts; Wherein: it also includes a motion controller 7, which is located on the right side of the rotating arm 4, and the input end of the motion controller 7 is electrically connected to an external power supply to facilitate the synchronous control of the electrical appliances.
[0017] A welding method of a narrow gap welding device comprises the following steps: S1: Install the connection base 1 on the robot arm, and connect the welding gun 6 to the welding machine; S2: Using the telescopic arm 5 to extend the welding gun 6 into the welding seam; S3: The connecting base 1 translates to drive the welding gun 6 to move to realize linear welding. The connecting base 1 drives the welding gun 6 to move through the extension arm 2, the rotating shaft 3, the rotating arm 4 and the telescopic arm 5; S4: When the end of the weld cannot be reached by only using the connection base 1 for translation welding, the motion controller 7 controls the motor 1 84 and the motor 2 94 in linkage, the rotating arm 4 rotates to drive the welding gun 6 to perform circular motion, and at the same time the telescopic arm 5 telescopes to adjust the rotation radius of the welding gun 6, controlling the welding gun 6 to weld in a straight line to complete the welding of the end of the weld.
[0018] The working principle of a narrow gap welding device and welding method provided by the present invention is as follows: when in use, the left end of the connecting seat 1 is fixedly connected to the arm of the robot. During the welding process, the arm of the robot drives the connecting seat 1 to move. When the weld is at a deeper position, the motion controller 7 is regulated, and the motor 84 is operated. The output shaft of the motor 84 drives the screw rod 82 to rotate through the transmission shaft 85 and the universal coupling 86. The screw rod 82 pushes the screw nut 83 and the telescopic arm 5 to move downward under the support of the screw rod seat 81. The telescopic arm 5 drives the welding gun 6 to extend from the narrow gap to the weld. The external welding machine controls the welding gun 6 to perform the welding operation. The seat 1 moves horizontally to achieve continuous welding. When the translation of the rotating arm 4 is limited and cannot be welded to the end of the weld, the motion controller 7 controls the motor 2 94. The motor 2 94 drives the worm 92 to rotate. The worm 92 drives the rotating shaft 3 on the right to rotate through the worm gear 93. The rotating shaft 3 on the right drives the rotating arm 4 to rotate. The rotating arm 4 drives the telescopic arm 5 and the welding gun 6 to swing synchronously. At the same time, the motor 1 84 runs, and the motor 1 84 controls the telescopic arm 5 and the welding gun 6 to extend to compensate for the radial length. The motor 1 84 and the motor 2 94 are controlled in linkage, so that the movement trajectory of the welding gun 6 can be controlled to be a straight line, which is convenient for the welding of the weld inside the box.
[0019] It is worth noting that the welding gun 6, motion controller 7, motor 1 84 and motor 2 94 disclosed in the above embodiments can be freely configured according to the actual application scenario. The welding gun 6 can use a welding gun of model YMENS-308R, the motion controller 7 can use a motion controller of model DMC660M, the motor 1 84 and the motor 2 94 can use a servo motor of model ECMA-C20604RS, and the motion controller 7 controls the operation of the motor 1 84 and the motor 2 94 using methods commonly used in the prior art.
[0020] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A narrow gap welding device, Features: It comprises a connecting seat (1), a telescopic driving unit (8) and a rotating driving unit (9); A connecting seat (1): an extension arm (2) is provided on its lower surface, the lower end of the extension arm (2) is rotatably connected to two rotating shafts (3), the two rotating shafts (3) are fixedly connected to the upper end of a rotating arm (4), the interior of the rotating arm (4) is slidably connected to a telescopic arm (5), the lower end of the telescopic arm (5) is provided with a welding gun (6), the input end of the welding gun (6) is electrically connected to the output end of an external welding machine; Telescopic drive unit (8): used to drive the movement of the telescopic arm (5); Rotation drive unit (9): used to drive the rotation of the rotating arm (4).
2. A narrow gap welding device according to claim 1, Features: It also includes a motion controller (7), which is located on the right side of the rotating arm (4), and an input end of the motion controller (7) is electrically connected to an external power supply.
3. A narrow gap welding device according to claim 2, Features: The telescopic drive unit (8) comprises a screw seat (81), a screw (82) and a screw nut (83); the screw seat (81) is arranged at the upper end inside the rotating arm (4); the middle part of the screw seat (81) is rotatably connected to the screw (82); the screw nut (83) is arranged at the upper end inside the telescopic arm (5); the screw (82) and the screw nut (83) are threadedly connected.
4. A narrow gap welding device according to claim 3, Features: The telescopic drive unit (8) further comprises a motor 1 (84), a transmission shaft (85) and a universal coupling (86); the motor 1 (84) is arranged on the right side of the upper surface of the connecting seat (1); the lower end of the motor 1 (84) extends to the interior of the extension arm (2) and is provided with a transmission shaft (85); the lower end of the transmission shaft (85) is provided with a universal coupling (86); the lower end of the universal coupling (86) is fixedly connected to the upper end of the screw rod (82); and the input end of the motor 1 (84) is electrically connected to the output end of the motion controller (7).
5. A narrow gap welding device according to claim 2, Features: The rotary drive unit (9) comprises a mounting seat (91), a worm (92) and a worm wheel (93); the mounting seat (91) is arranged at the lower end of the right side surface of the extension arm (2); the middle part of the mounting seat (91) is rotatably connected to the worm (92); the right end of the right rotating shaft (3) is provided with a worm wheel (93); the worm (92) and the worm wheel (93) are meshingly connected.
6. A narrow gap welding device according to claim 5, Features: The drive unit (9) further comprises a second motor (94), wherein the second motor (94) is arranged at the upper end of the front side of the extension arm (2), the output shaft of the second motor (94) is fixedly connected to the upper end of the worm (92), and the input end of the second motor (94) is electrically connected to the output end of the motion controller (7).
7. A narrow gap welding device according to claim 6, Features: A protective shell (10) is provided inside the mounting seat (91), the lower end of the worm (92) and the worm wheel (93) are both located inside the protective shell (10), a protective tube (11) is provided on the upper surface of the mounting seat (91), and the upper end of the worm (92) and the output shaft of the second motor (94) are both located inside the protective tube (11).
8. A welding method for a narrow gap welding device, Features: A narrow gap welding device according to any one of claims 1 to 7 is used, comprising the following steps: S1: Install the connection base (1) on the robot arm, and connect the welding gun (6) to the welding machine; S2: Using the telescopic arm (5) to extend the welding gun (6) into the welding seam; S3: The connecting seat (1) moves horizontally to drive the welding gun (6) to move to achieve linear welding; S4: When the end of the weld cannot be welded by only translating the connection base (1), the motion controller (7) controls the motor 1 (84) and the motor 2 (94) in a linked manner, and the rotating arm (4) rotates to drive the welding gun (6) to perform circular motion. At the same time, the telescopic arm (5) telescopes to adjust the rotation radius of the welding gun (6), controls the welding gun (6) to weld in a straight line, and completes the welding of the end of the weld.