Weldment positioning device of steel structure welding robot

Abstract

The utility model discloses a weldment positioning device of a steel structure welding robot, which relates to the technical field of welding and comprises a base plate, an adjusting mechanism is fixedly mounted in the middle of the base plate, and positioning mechanisms are fixedly mounted on two sides of the top of the adjusting mechanism. The positioning mechanism comprises a bottom plate, and the bottom plate is fixedly installed on the two sides of the top of the adjusting mechanism. By adopting the structure and arranging the positioning mechanism, during use, the second motor can be started, the second screw rod is driven to rotate, the movable block is driven to slide back and forth, the movable block drives the concave seat at the top to move synchronously, and the guide rollers in the concave seat are attached to the two ends of a workpiece; and after welding is completed, the third motor is started again, the plate is moved out, a new plate is put in, welding can be continued, and continuous operation is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of welding technology, and specifically relates to a welding part positioning device for a steel structure welding robot. Background Technology

[0002] A steel structure welding robot is an automated device specifically designed for steel structure welding operations. It integrates knowledge from multiple disciplines, including mechanical engineering, electronic technology, computer control technology, and welding processes. The robot typically consists of a mechanical body, a control system, a welding power source, welding tools, and sensors. The mechanical body provides the robot's motion foundation, enabling flexible movement with multiple degrees of freedom, allowing it to reach various welding positions on the steel structure. The control system acts as the robot's "brain," directing its actions and the welding process, precisely controlling parameters such as welding path, speed, current, and voltage. The welding power source provides the necessary electrical energy for welding, ensuring stable operation. Welding tools, such as welding torches, directly execute the welding operations. Sensors monitor various information during the welding process in real time, such as weld position and molten pool condition, allowing the robot to adjust welding parameters and paths promptly to ensure welding quality. Steel structure welding robots can efficiently and accurately complete various complex steel structure welding tasks and are widely used in industries such as construction, bridges, shipbuilding, and machinery manufacturing. They can significantly improve welding efficiency, reduce labor intensity, enhance the stability and consistency of welding quality, and reduce the impact of human factors on welding quality.

[0003] Chinese Patent No. CN213380054U discloses a welding workpiece positioning device for a steel structure welding robot. The device includes a machine base, a clamping device on the top surface of the machine base, and a cleaning device near the edge of the top surface of the machine base. The clamping device includes a vertical block, a rotating rod extending through the side of the vertical block, a housing fixedly mounted at one end of the rotating rod, a gear fixedly mounted at the other end of the rotating rod, a handle fixedly mounted on the surface of the gear, a sliding rod extending through the end of the housing away from the rotating rod, a stop fixedly mounted at one end of the sliding rod, a clamping block fixedly mounted at the other end of the sliding rod, and a spring fixedly mounted between the stop and the inner wall of the housing. By setting up the clamping device, a simple and convenient function of fixing the welding workpiece is achieved, and the rotation angle of the welding workpiece can be adjusted arbitrarily, allowing the welding workpiece to be welded by the welding robot at all angles without blind spots.

[0004] In practical applications, the device has basic positioning and clamping functions, which meet the basic operation requirements to a certain extent. However, the device has a relatively simple function and can only perform positioning and clamping actions. After completing the positioning and clamping, it is difficult to flexibly adjust the clamped workpiece to achieve rapid docking. At the same time, there is a significant deficiency in automated displacement adjustment. It cannot automatically adjust the left and right displacement of the clamped workpiece, and it cannot automatically dock with the workpiece to be welded, which restricts the adjustment of the position of the clamped workpiece.

[0005] In actual welding processes, precise positioning and flexible adjustment of the clamped workpiece position are crucial, directly affecting welding quality and production efficiency. However, this device is difficult to accurately position and clamp the workpiece to be welded, failing to meet the requirements of welding processing for workpiece positioning accuracy and position adjustment flexibility. This may lead to problems such as welding position deviation and unstable welding quality, seriously restricting the efficiency of the production process and the stability of product quality. Utility Model Content

[0006] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a welding workpiece positioning device for a steel structure welding robot, so as to solve the problems of the inability to flexibly adjust the position of the workpiece after clamping and the inability to automatically dock to assist welding during the application of the prior art.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0008] A welding component positioning device for a steel structure welding robot includes a base plate, an adjustment mechanism fixedly installed in the middle of the base plate, and positioning mechanisms fixedly installed on both sides of the top of the adjustment mechanism.

[0009] The positioning mechanism includes a base plate, which is fixedly installed on the top two sides of the adjustment mechanism. Guide components are fixedly installed on both sides of the base plate. An adjustment component is fixedly connected to the middle of the base plate. Power components are fixedly installed on both sides of the top of the adjustment component. A clamping component is fixedly installed on the outside of the power component.

[0010] As a preferred technical solution, the adjustment mechanism includes a guide rail, which is fixedly installed in the middle of the base plate. A first lead screw is rotatably connected inside the guide rail. The two ends of the first lead screw have opposite thread directions. Both ends of the first lead screw are threadedly connected to sliders. The top of the sliders is connected to the bottom of the base plate. A first motor is fixedly installed at one end of the guide rail, and the output end of the first motor is fixedly connected to one end of the first lead screw.

[0011] As a preferred technical solution, the guide assembly includes a fixed seat, which is fixedly connected to the top two sides of the base plate. A concave seat is fixedly connected to the top of the fixed seat, and guide rollers are rotatably connected to the inner side of the concave seat at equal intervals.

[0012] As a preferred technical solution, the adjustment component includes a rail frame, which is fixedly connected to the middle of the base plate. A second lead screw is rotatably connected inside the rail frame. The two ends of the second lead screw have opposite thread directions. Both ends of the second lead screw are threadedly connected to movable blocks. The top of the movable blocks is connected to the bottom of the power component. A second motor is fixedly connected to one side of the rail frame. The output end of the second motor is fixedly connected to the end of the second lead screw.

[0013] As a preferred technical solution, the power assembly includes a concave frame, which is fixedly connected to the top of the movable block. A third motor is fixedly connected to the bottom of the concave frame located at the rear. A drive roller is rotatably connected inside the concave frame, and the bottom of the drive roller is connected to the output end of the third motor.

[0014] As a preferred technical solution, the clamping assembly includes a slide groove and an electric push rod. The slide groove is opened on both sides of the concave frame, and a slide plate is slidably connected inside the slide groove. A connecting frame is fixedly installed at the output end of the electric push rod. The outer side of the connecting frame is fixedly connected to the slide plate. A bending frame is fixedly connected to the outer side of the slide plate, and a pressure roller is rotatably connected to the outer end of the bending frame.

[0015] As a preferred technical solution, mounting holes are provided at the four corners of the top of the substrate, and the mounting holes are all countersunk holes.

[0016] In summary, the present invention has the following main advantages:

[0017] First, when the adjustment mechanism of this device is running, the first motor is started, and its output shaft drives the first lead screw with opposite screw threads at both ends to rotate. The lead screw drives the slider to reciprocate linearly in the guide rail. Since the slider is fixed to the top positioning mechanism, it drives the positioning mechanism to move synchronously. By adjusting the reciprocating motion of the positioning components, the spacing is changed to adapt to the welding of workpieces of different sizes, thereby improving the applicability of the device in actual use and meeting the diverse workpiece processing needs.

[0018] Secondly, by setting up a positioning mechanism, the second motor can be started during use to drive the second lead screw to rotate, which in turn drives the movable block to slide back and forth. The movable block drives the top concave seat to move synchronously, so that the guide roller inside the concave seat fits with both ends of the workpiece. Taking the welding of rectangular steel plates as an example, after the drive roller fits with both ends of the plate, the third motor is started, and the drive roller rotates to move the plate back and forth between them, which facilitates automatic docking. After welding is completed, the third motor is started again to remove the plate and put in a new plate to continue welding, realizing continuous operation and improving production and processing efficiency.

[0019] Third, by cooperating with the clamping and guiding components, the electric push rod can be activated during use. Its telescopic rod pushes the connecting frame and slide plate downward, causing the bending frame and pressure roller to press against the top of the plate to be processed, so that the bottom of the plate is stably attached to the guide roller. The third motor is activated, and the drive roller is attached to both sides of the plate. The guide roller and pressure roller provide support and constraint from the bottom and top, so that the lateral and longitudinal displacement of the plate is stable, which facilitates the adjustment of lateral displacement after clamping, and the plate position can be flexibly adjusted, improving the overall applicability of the device and realizing continuous welding processing. This improves the overall adaptability of the device during use, and facilitates flexible adjustment while performing continuous welding processing. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a top view of the structure of this utility model;

[0022] Figure 3 This is a bottom view structural diagram of this utility model;

[0023] Figure 4 This is a schematic diagram of the positioning mechanism of this utility model.

[0024] Reference numerals: 1. Base plate; 2. Adjustment mechanism; 21. Guide rail; 22. First lead screw; 23. Slider; 24. First motor; 3. Positioning mechanism; 31. Base plate; 32. Guide assembly; 321. Fixed seat; 322. Concave seat; 323. Guide roller; 33. Adjustment assembly; 331. Rail frame; 332. Second lead screw; 333. Movable block; 334. Second motor; 34. Power assembly; 341. Concave frame; 342. Third motor; 343. Drive roller; 35. Clamping assembly; 351. Slide groove; 352. Electric push rod; 353. Slide plate; 354. Connecting frame; 355. Bending frame; 356. Pressure roller; 4. Mounting hole. Detailed Implementation

[0025] Example

[0026] refer to Figures 1 to 4 The welding part positioning device of a steel structure welding robot in this embodiment includes a base plate 1, an adjustment mechanism 2 is fixedly installed in the middle of the base plate 1, and a positioning mechanism 3 is fixedly installed on both sides of the top of the adjustment mechanism 2.

[0027] The positioning mechanism 3 includes a base plate 31, which is fixedly installed on both sides of the top of the adjustment mechanism 2. Guide components 32 are fixedly installed on both sides of the base plate 31. An adjustment component 33 is fixedly connected to the middle of the base plate 31. Power components 34 are fixedly installed on both sides of the top of the adjustment component 33. Clamping components 35 are fixedly installed on the outer side of the power components 34. When the device is in operation, the adjustment mechanism 2 in the middle of the base plate 1 is first activated. This mechanism may operate by a motor driving a lead screw, etc., to adjust its own position or the position of certain components, thereby adjusting the basic state of the entire welding part positioning device. After adjustment, the positioning mechanism 3 begins to function. The adjustment component 3 in the positioning mechanism 3... 3. It may be composed of a motor-driven lead screw, slider 23, etc. By starting the relevant power source, such as a power supply and PLC controller, the adjustment component 33 is driven to run, causing the power component 34 fixed on both sides of its top to move. The power component 34 may be a motor. After starting, it drives the clamping component 35 to perform clamping operation on the weldment. At the same time, the guide components 32 on both sides of the base plate 31 may adopt structures such as guide rail 21, slider 23 or guide rod, to provide guidance and support for the movement of the adjustment component 33, power component 34 and clamping component 35, to ensure their stable operation, achieve accurate positioning and firm clamping of the weldment, and meet the needs of steel structure welding robot for weldment positioning.

[0028] refer to Figures 1-3 The adjustment mechanism 2 includes a guide rail 21, which is fixedly installed in the middle of the base plate 1. A first lead screw 22 is rotatably connected inside the guide rail 21. The two ends of the first lead screw 22 have opposite threads. Both ends of the first lead screw 22 are threadedly connected to sliders 23. The top of the sliders 23 is connected to the bottom of the base plate 31. A first motor 24 is fixedly installed at one end of the guide rail 21. The output end of the first motor 24 is fixedly connected to one end of the first lead screw 22. By starting the first motor 24 fixed at one end of the guide rail 21, the output end of the first motor 24 drives the first lead screw 22 fixedly connected to it to rotate inside the guide rail 21. Since the threads at both ends of the first lead screw 22 turn in opposite directions and both ends are threadedly connected to sliders 23, when the first lead screw 22 rotates, it will drive the sliders 23 at both ends to slide in opposite directions inside the guide rail 21. Since the top of the slider 23 is connected to the bottom of the base plate 31 in the positioning mechanism 3, the sliding of the slider 23 will drive the base plate 31 to move synchronously, thereby causing the entire positioning mechanism 3 mounted on the base plate 31 to be displaced. In this way, the adjustment mechanism 2 can adjust the distance between the two positioning mechanisms 3 to adapt to the positioning requirements of weldments of different sizes and prepare for subsequent welding operations.

[0029] refer to Figures 1-2 and Figure 4The guide assembly 32 includes a fixed seat 321, which is fixedly connected to the top two sides of the base plate 31. A concave seat 322 is fixedly connected to the top of the fixed seat 321. Guide rollers 323 are rotatably connected to the inner side of the concave seat 322 at equal intervals. The adjustment assembly 33 includes a rail frame 331, which is fixedly connected to the middle of the base plate 31. A second lead screw 332 is rotatably connected inside the rail frame 331. The two ends of the second lead screw 332 have opposite threads. Both ends of the second lead screw 332 are threadedly connected to movable blocks 333. The top of the movable blocks 333 is connected to the bottom of the power assembly 34. A second motor 334 is fixedly connected to one side of the rail frame 331. The output end of the second motor 334 is fixedly connected to the end of the second lead screw 332. In this device, the fixed seats 321 fixed to the top two sides of the base plate 31 support the concave seats 322 at the top. The guide rollers 323, evenly spaced inside, can rotate freely. During the positioning and movement of the workpiece, the guide rollers 323 provide support and guidance, reduce friction, and ensure smooth movement of the workpiece. When the adjustment component 33 is running, the second motor 334 installed on one side of the rail frame 331 starts, and its output end drives the second lead screw 332 to rotate inside the rail frame 331. Since the threads at both ends of the second lead screw 332 turn in opposite directions and both ends are threadedly connected to the movable blocks 333, when the second lead screw 332 rotates, the movable blocks 333 at both ends will slide in a straight line in opposite directions inside the rail frame 331. The top of the movable blocks 333 is connected to the bottom of the power component 34. The movement of the movable blocks 333 drives the power component 34 to generate displacement, thereby flexibly adjusting the position of the power component 34 according to the actual position of the workpiece and the welding requirements, so that the power component 34 drives the clamping component 35 to perform precise clamping and positioning operations on the workpiece.

[0030] refer to Figures 1-2 and Figure 4The power assembly 34 includes a concave frame 341, which is fixedly connected to the top of the movable block 333. A third motor 342 is fixedly connected to the bottom of the concave frame 341 located at the rear. A drive roller 343 is rotatably connected inside the concave frame 341, and the bottom of the drive roller 343 is connected to the output end of the third motor 342. The clamping assembly 35 includes a slide groove 351 and an electric push rod 352. The slide groove 351 is formed on both sides of the concave frame 341, and the interior of the slide groove 351... All are slidably connected to a slide plate 353. A connecting frame 354 is fixedly installed at the output end of the electric push rod 352. The outer side of the connecting frame 354 is fixedly connected to the slide plate 353. A bending frame 355 is fixedly connected to the outer side of each slide plate 353. A pressure roller 356 is rotatably connected to the outer end of each bending frame 355. Mounting holes 4 are provided at the four corners of the top of the base plate 1. The mounting holes 4 are all countersunk holes. In the power assembly 34 of this device, the concave frame 341 is fixed to the top of the movable block 333. The third motor 342 at the bottom of the concave frame 341 is started, and its output end drives the drive roller 343 to rotate inside the concave frame 341. The rotation of the drive roller 343 can drive the welding parts placed on it to move, providing power for the position adjustment of the welding parts. Regarding the clamping assembly 35, the sliding grooves 351 on both sides of the concave frame 341 provide sliding tracks for the slide plate 353. After the electric push rod 352 is started, its output end pushes the connecting frame 354. The connecting frame 354 drives the slide plate 353 fixed thereto to slide in the sliding groove 351. The bending frame 355 connected to the outside of the slide plate 353 moves with the slide plate 353, so that the pressure roller 356 connected to the outer end of the bending frame 355 moves closer to the welding parts. By adjusting the extension and retraction of the electric push rod 352, the clamping force of the pressure roller 356 on the welding parts can be controlled, thereby firmly clamping the welding parts. In addition, the countersunk holes opened at the four corners of the top of the base plate 1 make it easy to use bolts and other connecting parts to fix the entire device on the worktable, ensuring the stability of the device during operation.

[0031] Operating principle and advantages: The adjustment mechanism 2 of this device starts the first motor 24 during operation. The output shaft of the motor drives the first lead screw 22 to rotate. Since the threads at both ends of the first lead screw 22 turn in opposite directions, when the lead screw rotates, it can drive the slider 23 to reciprocate linearly in opposite directions inside the guide rail 21. The slider 23 is fixedly connected to the positioning mechanism 3 at the top. The reciprocating movement of the slider 23 drives the positioning mechanism 3 to move synchronously. By adjusting the reciprocating movement of the positioning components, the distance between the positioning components can be changed, thereby adapting to the butt joint operation of workpieces of different sizes during the welding process. This design effectively improves the applicability of this device in actual use and meets the processing needs of diverse workpieces.

[0032] Positioning mechanism 3 plays a crucial role in the operation of this device. The second motor 334 is started, and its output shaft drives the second lead screw 332 to rotate. The lead screw drives the movable block 333 to reciprocate linearly through a threaded pair. The movable block 333 is fixedly connected to the top concave seat 322. The reciprocating sliding of the movable block 333 causes the concave seat 322 to move synchronously. When the concave seat 322 moves, it can drive the guide roller 323 inside to fit against both ends of the clamped workpiece. Taking the welding of rectangular steel plates as an example, after adjusting the drive roller 343 to fit against both ends of the plate, the third motor 342 is started. The machine output shaft drives the drive roller 343 to rotate inside the concave frame 341. The rotation of the drive roller 343 drives the plate to make reciprocating linear displacement between the two drive rollers 343, realizing flexible position adjustment of the plate during the welding process and facilitating automatic docking between the plates. After welding is completed, the third motor 342 is started again to make the drive roller 343 rotate in the same direction to one side, so that the welded plate can be removed from the drive roller 343, which is convenient and quick. Then, the new plate to be welded is placed between the drive rollers 343, and the welding process can continue. This realizes the continuous and uninterrupted welding operation of this device.

[0033] The clamping assembly 35 and the guiding assembly 32 further optimize the performance of this device. When the electric push rod 352 is activated, its telescopic rod pushes the connecting frame 354 downwards. The connecting frame 354 drives the sliding plate 353 downwards synchronously. The sliding plate 353 is fixedly connected to the bending frame 355. The downward movement of the sliding plate 353 pushes the bending frame 355 downwards, causing the bending frame 355 to drive the pressure roller 356 downwards and adhere to the top of the plate to be processed. At this time, the top of the plate is subjected to pressure, causing its bottom to stably adhere to the guide roller 323. The third motor 342 is activated, driving the roller 343 to rotate and adhere both sides of the plate. Simultaneously, the guide roller 323 and the pressure roller 356 provide support and constraint from the bottom and top of the plate, respectively. This synergistic effect keeps the plate stable during transverse and longitudinal displacement, effectively improving the adaptability of this device during welding processing. It facilitates lateral displacement adjustment of the clamped plate, enabling flexible adjustment of the required welding plate position, further improving the overall applicability of this device and facilitating continuous welding processing.

Claims

1. A welding component positioning device for a steel structure welding robot, comprising a base plate (1), characterized in that: An adjustment mechanism (2) is fixedly installed in the middle of the substrate (1), and a positioning mechanism (3) is fixedly installed on both sides of the top of the adjustment mechanism (2). The positioning mechanism (3) includes a base plate (31), which is fixedly installed on the top two sides of the adjustment mechanism (2). Guide components (32) are fixedly installed on both sides of the base plate (31). An adjustment component (33) is fixedly connected to the middle of the base plate (31). A power component (34) is fixedly installed on both sides of the top of the adjustment component (33). A clamping component (35) is fixedly installed on the outside of the power component (34).

2. The welding part positioning device for a steel structure welding robot according to claim 1, characterized in that: The adjustment mechanism (2) includes a guide rail (21), which is fixedly installed in the middle of the base plate (1). A first lead screw (22) is rotatably connected inside the guide rail (21). The two ends of the first lead screw (22) have opposite thread directions. Both ends of the first lead screw (22) are threadedly connected to sliders (23). The top of the sliders (23) is connected to the bottom of the base plate (31). A first motor (24) is fixedly installed at one end of the guide rail (21). The output end of the first motor (24) is fixedly connected to one end of the first lead screw (22).

3. The welding part positioning device for a steel structure welding robot according to claim 2, characterized in that: The guide assembly (32) includes a fixed seat (321), which is fixedly connected to the top two sides of the base plate (31). A concave seat (322) is fixedly connected to the top of the fixed seat (321), and guide rollers (323) are rotatably connected to the inner side of the concave seat (322) at equal intervals.

4. The welding part positioning device for a steel structure welding robot according to claim 3, characterized in that: The adjustment component (33) includes a rail frame (331), which is fixedly connected to the middle of the base plate (31). A second lead screw (332) is rotatably connected inside the rail frame (331). The two ends of the second lead screw (332) have opposite thread directions. Both ends of the second lead screw (332) are threadedly connected to movable blocks (333). The top of the movable blocks (333) is connected to the bottom of the power component (34). A second motor (334) is fixedly connected to one side of the rail frame (331). The output end of the second motor (334) is fixedly connected to the end of the second lead screw (332).

5. The welding part positioning device for a steel structure welding robot according to claim 4, characterized in that: The power assembly (34) includes a concave frame (341), which is fixedly connected to the top of the movable block (333). A third motor (342) is fixedly connected to the bottom of the concave frame (341) located on the rear side. A drive roller (343) is rotatably connected inside the concave frame (341), and the bottom of the drive roller (343) is connected to the output end of the third motor (342).

6. The welding part positioning device for a steel structure welding robot according to claim 5, characterized in that: The clamping assembly (35) includes a slide groove (351) and an electric push rod (352). The slide groove (351) is opened on both sides of the concave frame (341). The slide groove (351) is slidably connected to a slide plate (353). The output end of the electric push rod (352) is fixedly installed with a connecting frame (354). The outer side of the connecting frame (354) is fixedly connected to the slide plate (353). The outer side of the slide plate (353) is fixedly connected with a bending frame (355). The outer end of the bending frame (355) is rotatably connected with a pressure roller (356).

7. The welding part positioning device for a steel structure welding robot according to claim 1, characterized in that: Mounting holes (4) are provided at the four corners of the top of the substrate (1), and the mounting holes (4) are all countersunk holes.

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