Gantry welding machine

Abstract

The utility model discloses a portal type welding machine, including door type frame, the lower surface middle part of the crossbeam of door type frame is equipped with welding robot, still include quick -witted fixed establishment, quick -witted fixed establishment: it includes recess, rectangular slot, L type rod, dovetail slide groove and dovetail sliding block, the upper surface of door type frame's crossbeam is seted up with recess, and the bottom wall of recess is seted up with rectangular slot respectively, and the inside of rectangular slot is slidably connected with L type rod respectively, and L type rod all installs with welding robot cooperation, and the inside wall of the long side of rectangular slot is seted up with dovetail slide groove respectively, and the outside of L type rod all is fixedly connected with dovetail sliding block, and dovetail sliding block all with located in same rectangular slot and the inside slidably connected of adjacent dovetail slide groove, this portal type welding machine, greatly reduce the equipment downtime maintenance time, and the operation convenience is enhanced, and the production continuity is promoted, and the precision stability of guaranteeing portal type welding machine long -term welding.

Description

Technical Field

[0001] This utility model relates to the technical field of welding equipment for large workpieces, specifically a gantry welding machine. Background Technology

[0002] Welding is a processing method that uses heating, pressurization, or both to achieve atomic bonding in a workpiece. It is widely used for joining metal components. Gantry welding machines are named for their "gate"-shaped structure. Their crossbeams can move along the track. With adjustable welding torches or welding mechanisms, they can achieve efficient welding of large-sized workpieces with long weld seams, greatly improving welding quality and production efficiency. They are indispensable, especially in heavy industrial fields such as shipbuilding, bridge construction, and pressure vessel production.

[0003] Before welding, existing gantry welding machines require precise setting of key parameters such as welding current, voltage, welding speed, and wire feeding speed in the control system based on the specifications, material, and weld requirements of the workpiece. Large workpieces such as box columns and steel boxes are then securely clamped onto the worktable to ensure accurate positioning. Once ready, the equipment is started, and the welding robot on the gantry moves flexibly to the starting welding position according to the preset program. At the same time, the welding torch posture is finely adjusted. After welding is completed, the robot automatically returns to the origin, the welding power is turned off, and the operation process ends.

[0004] Existing gantry welding machines of this type are usually bolted to the lower surface of the gantry beam. When disassembling, repairing or replacing them, tools are needed to loosen each bolt one by one. When fixing them, the bolts must be precisely aligned with the mounting holes, which prolongs the assembly time and results in low installation efficiency. At the same time, the vibration generated by the operation of the equipment can loosen the bolts, causing the welding torch to deviate from the preset trajectory, which directly affects the welding accuracy of large workpieces such as box columns and steel boxes. To address this, we propose a gantry welding machine. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a gantry welding machine that significantly reduces equipment downtime and maintenance time, enhances ease of operation, improves production continuity, and ensures the long-term welding accuracy and stability of the gantry welding machine, thus effectively solving the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a gantry welding machine, including a gantry frame, wherein a welding robot is provided in the middle of the lower side of the crossbeam of the gantry frame, and a quick fixing mechanism is also included;

[0007] The quick-fixing mechanism includes a groove, a rectangular groove, an L-shaped rod, a dovetail slide, and a dovetail slider. The upper surface of the crossbeam of the gantry frame has a groove, and the bottom wall of the groove has a rectangular groove. The interior of the rectangular groove is slidably connected to an L-shaped rod, which is installed in conjunction with the welding robot. The inner wall of the long side of the rectangular groove has a dovetail slide, and the exterior of the L-shaped rod is fixedly connected to a dovetail slider. The dovetail slider is slidably connected to the interior of the adjacent dovetail slides in the same rectangular groove. This significantly reduces equipment downtime for maintenance, enhances operational convenience, improves production continuity, and ensures the long-term welding accuracy and stability of the gantry welding machine.

[0008] Furthermore, a microcontroller is installed on the outside of the gantry frame. The input terminal of the microcontroller is electrically connected to an external power source, and the input terminal of the welding robot is electrically connected to the output terminal of the microcontroller, providing electrical connections for all electrical components.

[0009] Furthermore, the quick-fixing mechanism also includes a rotating column, a turntable, an arc-shaped groove, and a sliding column. The bottom wall of the groove is rotatably connected to the rotating column, and the outside of the rotating column is fixedly fitted with a turntable. The center of the turntable has evenly distributed arc-shaped grooves. The top of each L-shaped rod is fixedly connected to a sliding column, and the outside of each sliding column is slidably connected to the inside of the vertically adjacent arc-shaped groove, so as to realize the synchronous sliding of the four L-shaped rods.

[0010] Furthermore, the quick-fixing mechanism also includes a worm wheel and a worm. The worm wheel is fixedly sleeved on the outside of the rotating column, and a worm is rotatably connected between the front and rear inner walls of the groove. The worm wheel and the worm mesh with each other to achieve stable transmission.

[0011] Furthermore, a right-angle motor is provided in the middle of the front side of the gantry frame. The rear end of the output shaft of the right-angle motor is fixedly connected to the front end of the worm gear, and the input end of the right-angle motor is electrically connected to the output end of the microcontroller to provide fixed drive.

[0012] Furthermore, the bottom of the gantry frame is bolted to a support base, and the left and right inner walls of the support base are respectively rotatably connected to a rotating shaft. The outside of the rotating shaft is fixedly fitted with a traveling wheel, so that the gantry frame can drive the welding machine to move.

[0013] Furthermore, it also includes a motor, which is located on the left side of the support base on the left side. The right end of the motor's output shaft is fixedly connected to the left end of the rotating shaft at the left rear end. The input end of the motor is electrically connected to the output end of the microcontroller to provide motion drive.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This gantry welding machine has the following advantages:

[0015] A right-angle motor drives a worm gear to rotate, and the worm wheel rotates synchronously with the rotating column, driving the turntable to rotate. As the turntable rotates, the arc-shaped groove on the turntable drives the L-shaped rod to move along the rectangular groove. The dovetail slider on the outside slides along the dovetail groove on the inner wall of the rectangular groove, ensuring the synchronous and stable movement of the L-shaped rod. This enables rapid disassembly and fixation of the welding robot. Compared with traditional bolt fixing, the loading and unloading efficiency is greatly improved. Because the worm gear has self-locking properties, it can resist the risk of loosening caused by vibrations generated during welding, ensuring the stability of the gantry welding machine in the welding process of large workpieces such as box columns and steel boxes. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the explosive structure of the rapid fixing mechanism of this utility model;

[0019] Figure 4 This is a partial cross-sectional structural schematic diagram of the present invention;

[0020] Figure 5 This is a structural schematic diagram of the welding robot of this utility model.

[0021] In the diagram: 1. Portal frame, 2. Welding robot, 3. Support base, 4. Rotary shaft, 5. Walking wheel, 6. Quick fixing mechanism, 601. Groove, 602. Rectangular groove, 603. L-shaped rod, 604. Dovetail slide, 605. Dovetail slider, 606. Rotary column, 607. Turntable, 608. Arc groove, 609. Sliding column, 610. Worm gear, 611. Worm, 7. Right angle motor, 8. Motor, 9. Microcontroller. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-5This embodiment provides a technical solution: a gantry welding machine, including a gantry frame 1, with a welding robot 2 located in the middle of the lower side of the crossbeam of the gantry frame 1 (the welding robot 2 is a commonly used arc welding robot in the prior art, usually composed of a robotic arm, a control system, a welding power source, sensors, and other auxiliary equipment. Before the welding task begins, the control system plans the movement trajectory of the robotic arm according to the preset welding path and process parameters. Usually, these paths are entered into the system through a programming language or teaching method. After the welding path is determined, the welding robot starts the welding process according to the set parameters. The control system controls the output of the welding power source and adjusts the welding current and voltage according to the welding process requirements. At the same time, the robotic arm moves according to the planned path, and the welding gun welds the workpiece with the movement of the robotic arm). It also includes a quick-fixing mechanism 6. A microcontroller 9 is located outside the gantry frame 1. The input terminal of the microcontroller 9 is electrically connected to an external power source, and the input terminal of the welding robot 2 is connected to the external power source. The output of the microcontroller 9 is electrically connected to the end of the gantry frame 1. The bottom end of the gantry frame 1 is bolted to the support base 3. The left and right inner walls of the support base 3 are respectively rotatably connected to the rotating shaft 4. The outside of the rotating shaft 4 is fixedly fitted with the walking wheel 5. The gantry frame 1 also includes a motor 8. The motor 8 is located on the left side of the support base 3. The right end of the output shaft of the motor 8 is fixedly connected to the left end of the rotating shaft 4 at the left rear end. The input end of the motor 8 is electrically connected to the output of the microcontroller 9. When the gantry welding machine is needed in the production of large production workpieces such as box columns, steel box bridges and lattice bridges, the motor 8 and the welding robot 2 start to operate through the control of the microcontroller 9. The output shaft of the motor 8 drives the rotating shaft 4 at the left rear end to rotate. The walking wheel 5 outside the rotating shaft 4 rotates accordingly. Under the support of the support base 3, the entire gantry frame 1 is driven to move on the laid track, so that the welding position can be flexibly adjusted. According to the previous data programming, the microcontroller 9 issues instructions to enable the welding robot 2 to perform automated welding operations on the workpiece to be welded below.

[0024] The quick-fixing mechanism 6 includes a groove 601, a rectangular groove 602, an L-shaped rod 603, a dovetail slide 604, and a dovetail slider 605. A groove 601 is formed on the upper surface of the crossbeam of the portal frame 1 (a cover plate is bolted to the upper end of the groove 601 to prevent impurities and dust from entering and affecting its internal transmission). Rectangular grooves 602 are formed on the bottom wall of the groove 601. L-shaped rods 603 are slidably connected inside the rectangular grooves 602. The L-shaped rods 603 are all installed in conjunction with the welding robot 2 (when the welding robot 2 is fixed, its upper rectangular mounting plate is located between the four L-shaped rods 603, and the vertical rods of the L-shaped rods 603 clamp it, while the horizontal rods support it, thus achieving the fixation of the welding robot 2). The rectangular groove 602 has dovetail grooves 604 on its long inner wall. Dovetail sliders 605 are fixedly connected to the outside of each L-shaped rod 603. The dovetail sliders 605 are slidably connected to the inside of adjacent dovetail grooves 604 within the same rectangular groove 602. The quick-fixing mechanism 6 also includes a rotating column 606, a turntable 607, an arc-shaped groove 608, and a sliding column 609. The bottom wall of the groove 601 is rotatably connected to the rotating column 606. A turntable 607 is fixedly fitted onto the outside of the rotating column 606. Evenly distributed arc-shaped grooves 608 are formed in the middle of the turntable 607 (the centers of the four arc-shaped grooves 608 are not on the central axis of the turntable 607). Sliding columns 609 are fixedly connected to the top of each L-shaped rod 603. The exterior of 09 is slidably connected to the interior of the vertically adjacent arc-shaped groove 608. The quick-fixing mechanism 6 also includes a worm gear 610 and a worm 611. The worm gear 610 is fixedly sleeved on the exterior of the rotating column 606. The worm 611 is rotatably connected between the front and rear inner walls of the groove 601. The worm gear 610 and the worm 611 are meshed together. A right-angle motor 7 is provided in the middle of the front side of the portal frame 1. The rear end of the output shaft of the right-angle motor 7 is fixedly connected to the front end of the worm 611. The input end of the right-angle motor 7 is electrically connected to the output end of the microcontroller 9. When the welding robot 2 reaches its maximum working time and needs to be disassembled, repaired, or replaced, the microcontroller 9 controls the right-angle motor 7 to start running. Its output shaft drives the worm 611 to rotate. Because the worm 611 and the worm gear... When 610 meshes, the worm gear 610 rotates synchronously with the rotating column 606, thereby driving the turntable 607 to rotate. When the turntable 607 rotates, the arc groove 608 on the turntable 607 is guided by the sliding column 609 which is slidably connected to the arc groove, causing the L-shaped rod 603 to move along the rectangular groove 602. During the movement of the L-shaped rod 603, the dovetail slider 605 on its outside slides along the dovetail groove 604 on the inner wall of the rectangular groove 602, ensuring the stable translation of the L-shaped rod 603. When the L-shaped rod 603 retracts inward, it can clamp the base of the welding robot 2 to achieve fixation. When it opens outward, it can loosen the base of the welding robot 2 for disassembly or adjustment. At the same time, the self-locking characteristics of the worm gear 610 and worm 611 ensure the reliability of the welding robot 2 in the fixed state.

[0025] The working principle of the gantry welding machine provided by this utility model is as follows: When a gantry welding machine is needed for the production of large workpieces such as box columns, steel box bridges, and lattice bridges, the motor 8 and welding robot 2 start to operate under the control of the microcontroller 9. The output shaft of the motor 8 drives the rotating shaft 4 at the left rear end to rotate, and the external traveling wheel 5 of the rotating shaft 4 rotates accordingly. Under the support of the support base 3, the entire gantry frame 1 is driven to move on the laid track, allowing for flexible adjustment of the welding position. According to the previously programmed data, the microcontroller 9 issues instructions to enable the welding robot 2 to perform automated welding operations on the workpiece below. When the welding robot 2 reaches its maximum working time and needs to be disassembled, repaired, or replaced, the microcontroller 9 controls the right-angle motor 7 to start operating, and its output shaft drives... When the worm 611 rotates, it meshes with the worm wheel 610, which rotates synchronously with the rotating column 606, thereby driving the turntable 607 to rotate. When the turntable rotates, the arc groove 608 on the turntable 607 guides the sliding column 609, which is slidably connected to the arc groove, causing the L-shaped rod 603 to move along the rectangular groove 602. During the movement of the L-shaped rod 603, the dovetail slider 605 on its outside slides along the dovetail groove 604 on the inner wall of the rectangular groove 602, ensuring the stable translation of the L-shaped rod 603. When the L-shaped rod 603 retracts inward, it can clamp the base of the welding robot 2 for fixation. When it opens outward, it can loosen the base of the welding robot 2 for disassembly or adjustment. At the same time, the self-locking characteristics of the worm wheel 610 and worm 611 ensure the reliability of the welding robot 2 in the fixed state.

[0026] It is worth noting that the microcontroller 9 disclosed in the above embodiments can be a PIC10F200, the right-angle motor 7 can be a RAX-271E, the motor 8 can be a YS8024, and the welding robot 2 can be a BRTIRWD1506A. The microcontroller 9 controls the right-angle motor 7, the motor 8 and the welding robot 2 using methods commonly used in the prior art.

[0027] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A gantry welding machine, comprising a gantry frame (1), wherein a welding robot (2) is provided at the center of the lower side of the crossbeam of the gantry frame (1), characterized in that: It also includes a quick-fixing mechanism (6); Quick fixing mechanism (6): It includes a groove (601), a rectangular groove (602), an L-shaped rod (603), a dovetail slide (604) and a dovetail slider (605). The upper surface of the crossbeam of the portal frame (1) is provided with a groove (601). The bottom wall of the groove (601) is provided with a rectangular groove (602). The interior of the rectangular groove (602) is slidably connected with an L-shaped rod (603). The L-shaped rod (603) is installed in conjunction with the welding robot (2). The inner wall of the long side of the rectangular groove (602) is provided with a dovetail slide (604). The exterior of the L-shaped rod (603) is fixedly connected with a dovetail slider (605). The dovetail slider (605) is slidably connected to the interior of the adjacent dovetail slide (604) located in the same rectangular groove (602).

2. The gantry welding machine according to claim 1, characterized in that: The portal frame (1) is equipped with a microcontroller (9) on its exterior. The input end of the microcontroller (9) is electrically connected to an external power source, and the input end of the welding robot (2) is electrically connected to the output end of the microcontroller (9).

3. A gantry welding machine according to claim 2, characterized in that: The quick-fixing mechanism (6) further includes a rotating column (606), a turntable (607), an arc groove (608), and a sliding column (609). The bottom wall of the groove (601) is rotatably connected to the rotating column (606). The turntable (607) is fixedly sleeved on the outside of the rotating column (606). The turntable (607) has evenly distributed arc grooves (608) in the middle. The top of each L-shaped rod (603) is fixedly connected to a sliding column (609). The outside of the sliding column (609) is slidably connected to the inside of the vertically adjacent arc groove (608).

4. A gantry welding machine according to claim 3, characterized in that: The quick-fixing mechanism (6) also includes a worm wheel (610) and a worm (611). The worm wheel (610) is fixedly sleeved on the outside of the rotating column (606), and the worm (611) is rotatably connected between the front and rear inner walls of the groove (601). The worm wheel (610) and the worm (611) are meshed together.

5. A gantry welding machine according to claim 4, characterized in that: A right-angle motor (7) is provided in the middle of the front side of the gantry frame (1). The rear end of the output shaft of the right-angle motor (7) is fixedly connected to the front end of the worm gear (611). The input end of the right-angle motor (7) is electrically connected to the output end of the microcontroller (9).

6. A gantry welding machine according to claim 2, characterized in that: The bottom of the portal frame (1) is connected to a support base (3) by bolts. The left and right inner walls of the support base (3) are respectively connected to a rotating shaft (4), and the outside of the rotating shaft (4) is respectively fixedly fitted with a traveling wheel (5).

7. A gantry welding machine according to claim 6, characterized in that: It also includes a motor (8), which is located on the left side of the support base (3) on the left side. The right end of the output shaft of the motor (8) is fixedly connected to the left end of the rotating shaft (4) at the left rear end. The input end of the motor (8) is electrically connected to the output end of the microcontroller (9).

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