A welding device and method based on the machining of parts of a grabber truck

Abstract

The application belongs to the technical field of welding, and particularly relates to a welding device and method based on pipe grabbing vehicle part machining, which comprises a raw material transport vehicle for conveying square pipes, a welding machine for welding a mesh frame, and a finished product transport vehicle for conveying the mesh frame finished product, further comprises a mesh frame welding conveyor for conveying the mesh frame, a loader for loading the square pipe to the mesh frame welding conveyor, a de-stacking and feeding mechanism for grabbing the square pipe on the raw material transport vehicle to the loader, and a discharging and framing mechanism for taking the welded mesh frame to the finished product transport vehicle; when welding, the raw material transport vehicle conveys the square pipe to the material taking position of the de-stacking and feeding mechanism, the de-stacking and feeding mechanism grabs the square pipe to the loader, the loader installs the square pipe to the mesh frame welding conveyor, the mesh frame welding conveyor conveys the loaded mesh frame to the welding machine for welding, the mesh frame after welding is conveyed to the dismounting station of the mesh frame welding conveyor, the discharging and framing mechanism takes down the mesh frame and grabs the mesh frame to the finished product transport vehicle, and the whole production process does not need manual operation, thereby improving the efficiency.

Description

Technical Field

[0001] This invention relates to the field of wire mesh welding technology, specifically a welding equipment and method based on the processing of pipe-grabbing vehicle components. Background Technology

[0002] With the rapid development of my country's industrial technology, more and more industrial sites need to use safety protection fences, among which mesh safety protection fences account for a large proportion. The main component of mesh fences is a mesh frame welded from square tubes.

[0003] The existing wire mesh frame welding manufacturing methods have the following problems: 1. Wire mesh frame welding manufacturing is mostly done by manual splicing and arranging of materials and robot welding. After each set of wire mesh frames is welded, the robot needs to wait for the worker to remove the welded wire mesh frame, install the new square tube and splice and fix it. The cycle time is slow and the efficiency is low. 2. When it is necessary to change the shape and size of the wire mesh frame, the manual adjustment of the tooling fixtures is required. It lacks flexibility, the workload of manual labor is large, and the flexibility of the entire production welding process is insufficient. Summary of the Invention

[0004] The purpose of this invention is to solve the above problems and provide a welding equipment and method based on the processing of pipe-grabbing vehicle parts. The entire process is fully automated without manual intervention, which improves efficiency and reduces manpower input. It can adapt to various mesh frame shapes and sizes and is easy to adjust.

[0005] The technical solution adopted by this invention to solve its technical problem is: A welding equipment and method based on pipe-grabbing vehicle component processing includes a raw material transport vehicle for conveying square tubes, a welding machine for welding mesh frames, and a finished product transport vehicle for conveying finished mesh frames. It also includes a mesh frame welding conveyor for conveying mesh frames, a loader for loading square tubes onto the mesh frame welding conveyor, a destacking and loading mechanism for grabbing square tubes from the raw material transport vehicle onto the loader, and a unloading and framing mechanism for taking the welded mesh frames onto the finished product transport vehicle. The raw material for the finished mesh frames is square tubes, and the mesh frames are composed of crossbars and longitudinal tubes.

[0006] Furthermore, it also includes a bracket for supporting the destacking and loading mechanism and a bracket for supporting the unloading and framing mechanism, wherein the destacking and loading mechanism is supported on the bracket and is movably connected to the bracket.

[0007] Furthermore, the destacking and loading mechanism includes a first movable crossbeam and a loading robot for gripping square tubes. The two ends of the first movable crossbeam are slidably connected to the support, and the loading robot is movably connected to the first movable crossbeam. The material unloading and framing mechanism includes a first fixed crossbeam and a material unloading robot for gripping finished wire mesh frames. The two ends of the first fixed crossbeam are fixedly connected to the support, and the material unloading robot is movably connected to the first fixed crossbeam.

[0008] Furthermore, the loader is divided into a front loader located in front of the wire mesh welding conveyor, a rear loader located at the rear of the wire mesh welding conveyor, and an intermediate loader supported on the wire mesh welding conveyor.

[0009] Furthermore, the raw material transport vehicle includes a raw material transport vehicle for providing lateral movement of raw materials to the front loader and the rear loader, and a raw material transport vehicle for providing longitudinal movement of raw materials to the intermediate loader. There are two raw material transport vehicles for lateral movement side by side, and two raw material transport vehicles for longitudinal movement side by side.

[0010] Furthermore, the loader includes a frame for supporting the square tube, a lifting beam for lowering and releasing material, a conveying mechanism for conveying the square tube forward, and a gripping mechanism for gripping a single square tube. The lifting beam is slidably connected to the frame, the conveying mechanism is installed on the upper end of the frame, and the gripping mechanism is installed on the front end of the lifting beam.

[0011] Furthermore, the conveying mechanism includes a push rod that pushes the square tube forward and a first drive mechanism that drives the push rod to move. The push rod is slidably connected to the upper end of the frame, and the first drive mechanism is installed on the upper end of the frame.

[0012] Furthermore, the front end of the frame is provided with a striking mechanism for positioning the axial position of the square tube. The striking mechanism includes a striking plate for striking the right end of the square tube and a second driving mechanism for driving the striking plate to move. The second driving mechanism is installed on the upper end of the frame.

[0013] Furthermore, the gripping mechanism includes a fixed claw and a movable claw. A connecting beam is provided at the front end of the lifting beam. The upper end of the fixed claw is fixedly connected to the connecting beam, and the upper end of the movable claw is slidably connected to the connecting beam. A third driving mechanism for driving the movable claw to move is provided on the connecting beam.

[0014] Furthermore, both the fixed claw and the movable claw include a column and a gripper for supporting the square tube. The lower end of the column is provided with a cylinder for driving the gripper to move back and forth. The lower end of the column is provided with a clamping mechanism for clamping the square tube. The clamping mechanism includes a clamping cylinder. The cylinder body end of the clamping cylinder is connected to the column, and the piston rod end of the clamping cylinder cooperates with the square tube.

[0015] Furthermore, the wire mesh welding conveyor includes a pallet body for conveying the wire mesh and a frame for supporting the pallet body. The pallet body and the frame are slidably connected. The frame is divided into upper and lower layers, and each layer of the frame corresponds to one pallet body. The frame includes a loading station, a disassembly station and a welding station from left to right.

[0016] Furthermore, the pallet body includes a second fixed crossbeam and a second movable crossbeam for pressing the longitudinal bars of the mesh frame. The two ends of the second movable crossbeam are slidably connected to the pallet body via guide rail slider pairs. Both ends of the second movable crossbeam are provided with a sixth driving mechanism for driving the movable crossbeam to move. The second fixed crossbeam and the second movable crossbeam are both provided with a fixing mechanism for positioning the mesh frame. The fixing mechanisms are symmetrically distributed front and back.

[0017] Furthermore, the fixing mechanism includes a first positioning mechanism for fixing the left end of the crossbar and the end of the left longitudinal bar, a second positioning mechanism for fixing the middle position of the crossbar and the end of the middle longitudinal bar, and a third positioning mechanism for fixing the right end of the crossbar and the end of the right longitudinal bar. The first positioning mechanism and the second positioning mechanism are slidably connected to the corresponding crossbeams, and the third positioning mechanism is fixedly connected to the corresponding crossbeams.

[0018] Furthermore, the first positioning mechanism includes a first base plate and a fifth driving mechanism for driving the first base plate to move left and right. The first base plate is slidably connected to the corresponding crossbeam through a guide rail slider pair. The first base plate is provided with a positioning mechanism for positioning the end of the crossbar, a first fixing mechanism for fixing the end of the crossbar, a second fixing mechanism for fixing the end of the left longitudinal bar, and a first pressing mechanism for pressing the mesh frame.

[0019] Furthermore, the second positioning mechanism includes a second base plate and a sixth driving mechanism for driving the second base plate to move left and right. The second base plate is slidably connected to the corresponding crossbeam through a guide rail slider pair. The second base plate includes a third fixing mechanism for fixing the middle part of the crossbar, a fourth fixing mechanism for fixing the end of the intermediate longitudinal bar, and a second pressing mechanism for pressing the mesh frame.

[0020] Furthermore, the third positioning mechanism includes a third base plate, which is fixedly connected to the corresponding crossbeam. The third base plate is provided with a positioning plate for positioning the end of the crossbeam, a fifth fixing mechanism for fixing the end of the crossbeam, a sixth fixing mechanism for fixing the end of the right longitudinal bar, and a third pressing mechanism for pressing the mesh frame.

[0021] The beneficial effects of this invention are: 1. This invention includes a raw material transport vehicle for conveying square tubes, a welding machine for welding wire mesh frames, and a finished product transport vehicle for conveying the finished wire mesh frames. It also includes a wire mesh frame welding conveyor for conveying the wire mesh frames, a loader for loading square tubes onto the wire mesh frame welding conveyor, a destacking and loading mechanism for grabbing the square tubes from the raw material transport vehicle onto the loader, and a loading and unloading mechanism for removing the welded wire mesh frames from the finished product transport vehicle. During welding, the raw material transport vehicle transports the square tubes to the loading point of the destacking and loading mechanism, which grabs the square tubes onto the loader. The loader installs the square tubes onto the wire mesh frame welding conveyor, which then transports the loaded wire mesh frames to the welding machine for welding. After welding, the wire mesh frames are transported to the disassembly station of the wire mesh frame welding conveyor, where the loading and unloading mechanism removes the wire mesh frames and grabs them onto the finished product transport vehicle. The entire production process is fully automated and requires no manual labor, improving efficiency and reducing manpower input.

[0022] 2. In this invention, the support is divided into upper and lower layers. Each layer of the support corresponds to a tray body. While the upper layer conveying tray is being moved out of the welding station, the lower layer conveying tray, which has already been clamped with the wire mesh square tube, is simultaneously moved into the welding station to perform welding of the lower wire mesh. In this way, the upper and lower layer conveying trays alternately enter the welding station to work without interfering with each other and cooperate in a coordinated manner. The welding robot works continuously, which improves efficiency.

[0023] 3. In this invention, the pallet body includes a fixed crossbar for positioning the longitudinal bars of the mesh frame and a movable crossbar for pressing the longitudinal bars of the mesh frame. Both the fixed and movable crossbars are equipped with fixing mechanisms for positioning the mesh frame. During operation, the two crossbars on both sides of the mesh frame are fixed to the fixed and movable crossbars respectively. Then, the fixing mechanisms on the fixed and movable crossbars fix the ends of the longitudinal bars of the mesh frame. The movable crossbars move to press the longitudinal bars, so that the longitudinal bars and crossbars form a mesh frame structure, facilitating welding and allowing for automatic adjustment and positioning of mesh frames of various shapes and sizes, offering high flexibility.

[0024] 4. In this invention, the support frame includes a loading station, a disassembly station, and a welding station from left to right. Previously, manual loading and unloading of wire mesh frames and square tubes were all done at the welding station, where there was a robot above, which posed a safety hazard. Now, the wire mesh frames and square tubes can be loaded and unloaded at another station through the conveyor, ensuring the safety of the workers.

[0025] 5. The loader in this invention includes a frame for supporting square tubes, a lifting beam for lowering and unloading materials, a conveying mechanism for forward conveying of square tubes, and a gripping mechanism for grabbing single square tubes. The lifting beam is slidably connected to the frame, the conveying mechanism is installed on the upper end of the frame, and the gripping mechanism is installed on the front end of the lifting beam. During operation, the loading mechanism grabs the square tubes onto the upper end of the frame, the conveying mechanism continuously conveys the square tubes forward to the gripping mechanism, then the lifting beam descends, lowering the square tubes to the conveying trolley. The fixing mechanism of the conveying trolley fixes the square tubes and conveys them to the welding mechanism for welding. The downward-reaching automatic loading machine uses a single bracket for the lifting and unloading of the grippers and the single-piece and positioning of the profiles, occupying little space. After the grippers grab the workpieces, they directly lower and unload the materials without translation. The structure is simple, stable, and has a fast production cycle.

[0026] 6. This invention features a striking mechanism at the front end of the frame for positioning the axial position of the square tube. The striking mechanism includes a striking plate for striking the right end of the square tube and a third driving mechanism for moving the striking plate left and right. The third driving mechanism uses a belt to drive the striking plate to move left and right continuously, striking the right end of the square tube and fixing the foremost square tube to the left end position, ensuring more precise mesh frame splicing.

[0027] 7. The present invention provides a pressing mechanism for pressing square tubes at the lower end of the column. The pressing mechanism includes a pressing cylinder. The cylinder body end of the pressing cylinder is connected to the column, and the piston rod end of the pressing cylinder cooperates with the square tube. When the lifting beam descends, the piston rod of the pressing cylinder extends to press the square tube, preventing the square tube from falling. This provides good reliability. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a top view of the present invention; Figure 3 This is a schematic diagram of the structure of the unstacking and loading mechanism and the unloading and framing mechanism of the present invention; Figure 4 This is a schematic diagram of the loader structure of the present invention; Figure 5 This is a partial enlarged view of the loader of the present invention, left view; Figure 6 This is a left view of the gripping mechanism of the present invention; Figure 7 This is a schematic diagram showing the cooperation between the rear loader and the wire mesh welding conveyor of the present invention; Figure 8 This is a schematic diagram showing the cooperation between the intermediate loader and the wire mesh welding conveyor of the present invention; Figure 9 This is a schematic diagram of the wire mesh welding conveyor structure of the present invention; Figure 10 This is a top view of the wire mesh welding conveyor of the present invention; Figure 11 This is a schematic diagram of the tray body structure of the present invention; Figure 12 This is a schematic diagram of the movable crossbeam structure of the present invention; Figure 13 This is a schematic diagram of the first positioning mechanism of the present invention; Figure 14 This is a schematic diagram of the second positioning mechanism of the present invention; Figure 15 This is a schematic diagram of the third positioning mechanism of the present invention.

[0029] In the picture: 1. Raw material transport vehicle; 2. Welding machine; 3. Finished product transport vehicle. 4. Wire mesh frame welding conveyor; 41. Pallet body; 42. Frame; 43. Loading station; 44. Disassembly station; 45. Welding station; 46. Second fixed crossbeam; 47. Second movable crossbeam; 48. First positioning mechanism; 481. First base plate; 482. First cylinder; 483. First pressure plate. 483, second cylinder; 484, second pressure plate; 485, first positioning block; 486, third cylinder; 487, third pressure plate; 488, second positioning block. 489, First pressing cylinder 4810, First rotating plate 4811, Second positioning mechanism 49, Second base plate 491, Fourth cylinder 492, Fourth pressure plate 493, Third positioning block 494, Fifth cylinder 495, Fifth pressure plate 496, Fourth positioning block 497, Second pressing cylinder 119, Second rotating plate 1110, Third positioning mechanism 410, Third base plate 4101, Positioning plate 4102, Sixth cylinder 4103, Sixth pressure plate 4104, Fifth positioning block 4105, Seventh cylinder 4106, Seventh pressure plate 4107, Sixth positioning block 4108, Third pressing cylinder 4109, Third rotating plate 4110; Loader 5, frame 54, lifting beam 55, push rod 56, clapper 57, connecting beam 58, column 59, gripper 510, cylinder 511, clamping cylinder 512; stacking and loading mechanism 6, first movable crossbeam 61, loading robot 62; unloading and frame loading mechanism 7, first fixed crossbeam 71, unloading robot 72; bracket 8. Detailed Implementation

[0030] like Figure 1 and Figure 2As shown, a welding equipment and method based on pipe-grabbing vehicle component processing includes a raw material transport vehicle 1 for conveying square tubes, a welding machine 2 for welding mesh frames, and a finished product transport vehicle 3 for conveying finished mesh frames. The welding machine 2 is located at the right rear of the production line. It also includes a mesh frame welding conveyor 4 for conveying mesh frames, a loader 5 for loading square tubes onto the mesh frame welding conveyor 4, a destacking and loading mechanism 6 for grabbing square tubes from the raw material transport vehicle 1 onto the loader 5, and a loading and unloading mechanism 7 for taking the welded mesh frames onto the finished product transport vehicle 3. The mesh frame welding conveyor 4 runs from left to right through the loading station and welding station of the entire production line. The raw material for the finished mesh frames is square tubes, and the mesh frames are composed of crossbars and longitudinal tubes.

[0031] During welding, the raw material transport vehicle 1 transports the square tubes to the picking point of the destacking and loading mechanism 4. The destacking and loading mechanism 4 grabs the square tubes and loads them onto the loader 5. The loader 5 installs the square tubes onto the wire mesh frame welding conveyor 4. The wire mesh frame welding conveyor 4 transports the loaded wire mesh frame to the welding machine 2 for welding. After welding, the wire mesh frame is transported to the disassembly station of the wire mesh frame welding conveyor 4. The unloading and loading mechanism 7 removes the wire mesh frame and grabs it onto the finished product transport vehicle 3. The entire production process is as follows: the raw material trolley enters the working area, the loading end picks up the square tube material, and then it is placed into the loader for positioning, tapping, and conveying. The square tube is then transferred from the loader to the welding conveyor, where it is spliced, positioned, clamped, and transported to the welding station. The welding robot welds the wire mesh frame. After welding, the unloading robot picks up the welded wire mesh frame and places it into the finished product trolley. The entire process is fully automated and requires no manual labor, improving efficiency and reducing manpower input.

[0032] like Figure 1 and Figure 3 As shown, it also includes a bracket 8 for supporting the destacking and loading mechanism 6 and the unloading and framing mechanism 7. The destacking and loading mechanism 6 is supported on the bracket 8 and is movably connected to the bracket 8. The unloading and framing mechanism 7 is supported on the right end of the bracket 8.

[0033] like Figure 3As shown, the destacking and loading mechanism 6 includes a first movable crossbeam 61 and a loading robot 62 for gripping square tubes. The two ends of the first movable crossbeam 61 are slidably connected to the support 8 via guide rail slider pairs. The loading robot 62 is movably connected to the first movable crossbeam 61. The two ends of the first movable crossbeam 61 are driven to the support 8 via servo motors and gear racks; this is existing technology and will not be elaborated further. The loading robot 62 includes a column and a vacuum suction cup located at the lower end of the column. The vacuum suction cup is used to pick up the square tubes. A connecting plate is provided between the column and the first movable crossbeam 61, and the connecting plate is slidably connected to the first movable crossbeam 61 via guide rail slider pairs. The connecting plate is driven to the first movable crossbeam 61 by a servo motor and gear racks; this is existing technology and will not be elaborated further. The column and connecting plate are slidably connected via guide rail slider pairs, allowing the column to move along the axis of the first movable crossbeam 61 and to move up and down. The unloading and framing mechanism 7 includes a first fixed crossbeam 71 and an unloading robot 72 for gripping finished wire mesh frames. The two ends of the first fixed crossbeam 71 are fixedly connected to the support 8. The unloading robot 72 is movably connected to the first fixed crossbeam 71. The unloading robot 72 includes a column and a vacuum suction cup located at the lower end of the column. The vacuum suction cup is used to pick up the wire mesh frame. A connecting plate is provided between the column and the first fixed crossbeam 71. The connecting plate and the first fixed crossbeam 71 are slidably connected by a guide rail slider pair. The connecting plate and the first fixed crossbeam 71 are driven by a servo motor and a gear rack. This is existing technology and will not be described in detail here. In this embodiment, a gear rack drive method is selected. At the same time, a screw nut, sprocket chain, or other drive methods can also be used. This is something that those skilled in the art can easily think of. The column and the connecting plate are slidably connected by a guide rail slider pair, so that the column can move along the axis of the first fixed crossbeam 71 and can move up and down.

[0034] The destacking and loading robot is located above the loading station and the raw material transport vehicle. The robot can move along its front-to-back and left-to-right axes, and can also rise and fall perpendicular to the ground. The robot's end effector consists of vacuum suction cups. The two ends of the unloading and crating robot are bolted to the bracket 8, allowing it to move along its front-to-back axis and also rise and fall perpendicular to the ground. like Figure 2 As shown, the loader 5 is divided into a front loader 51 located in front of the wire mesh welding conveyor 4, a rear loader 52 located at the rear of the wire mesh welding conveyor 4, and a middle loader 53 supported on the wire mesh welding conveyor 4. The stacking and loading mechanism 6 grabs the square tubes on the raw material transport vehicle 1 onto the front loader 51 and the rear loader 52, and arranges them neatly on the loader by patting them down. The front loader 51 is used to install the front horizontal column into the wire mesh welding conveyor 4, such as... Figure 7 As shown, the rear loader 52 is used to install the rear crossbar into the wire mesh welding conveyor 4, such as... Figure 8As shown, the intermediate loader 53 is used to install the intermediate longitudinal pipe into the wire mesh welding conveyor 4.

[0035] like Figure 1 and Figure 2 As shown, the raw material transport vehicle 1 includes a raw material transport vehicle for providing lateral movement of raw materials to the front loader 51 and the rear loader 52, which can move laterally along the direction of the wire mesh welding conveyor, and a raw material transport vehicle for providing longitudinal movement of raw materials to the middle loader 53, which can move longitudinally perpendicular to the direction of the wire mesh welding conveyor. There are two laterally moving raw material transport vehicles side by side, and two longitudinally moving raw material transport vehicles side by side.

[0036] The raw material transport vehicle 1 is located in front of the front loader 51. Steel rails are laid under the raw material transport vehicle 1. The welding robot is fixed to the robot bracket with screws and suspended above the welding station. The robot bracket is fixed to the ground with screws. The finished product transport vehicle 3 is located below the unloading and loading mechanism 7 and in front of the mesh frame welding conveyor 4. Steel rails are laid under it, and it can move laterally along the direction of the mesh frame welding conveyor 4.

[0037] The raw material transport vehicle is driven by a geared motor and chain drive. It consists of a chassis and a material rack, with the rack centrally positioned above the chassis. Steel rails run beneath the chassis, allowing movement along them. There are four raw material transport vehicles: two side-by-side (left-right) and two side-by-side (front-back). The two side-by-side vehicles, which can move forward and backward, supply square tube raw materials to the middle loader. The two front-back vehicles, which can move left and right, supply square tube raw materials to the front and rear loaders. The purpose of having two vehicles side-by-side is to allow for alternating transfer of square tube raw materials, ensuring a constant supply in each vehicle for the loaders without interruption or waiting time, thus maintaining production rhythm.

[0038] like Figure 4 and Figure 5As shown, the loader 5 includes a frame 54 for supporting square tubes, a lifting beam 55 for downward unloading, a conveying mechanism for forward conveying of square tubes, and a gripping mechanism for gripping single square tubes. The frame 54 has a platform at its upper end for supporting the square tubes. The lifting beam 55 is slidably connected to the frame 54 via a guide rail slider pair. Both the frame 54 and the lifting beam 55 are frame structures. The conveying mechanism is installed on the upper end of the frame 54, and the gripping mechanism is installed on the front end of the lifting beam 55. During operation, the loading mechanism grips the square tubes onto the upper end of the frame 54, the conveying mechanism continuously conveys the square tubes forward to the gripping mechanism, and then the lifting beam 55 descends, lowering the square tubes to the conveying trolley. The fixing mechanism of the conveying trolley fixes the square tubes and conveys them to the welding mechanism for welding. This downward-facing automatic loading machine uses a single bracket for the gripper lifting and profile sorting / positioning, occupying little space. After gripping the workpiece, the gripper directly lowers to unload the material without needing to move it horizontally. It has a simple structure, good stability, and a fast production cycle.

[0039] A drive mechanism is provided between the lifting beam 55 and the frame 54. The drive mechanism includes a servo motor and a rack. The servo motor is installed on the outer side of the lower end of the lifting beam 55, and the servo motors are symmetrically distributed on the left and right sides. A gear is provided at the output end of the servo motor. The rack is installed on the frame 54, and the rack is located on the outer side of the frame 54. The gear meshes with the rack, and the rack axis is vertical. The servo motor drives the gear to rotate, and through the meshing of the gear and the rack, the lifting beam 55 is driven to rise and fall. In this embodiment, a gear and rack drive method is used. However, screw drive, chain drive, belt drive, etc., can also be used, which are easy for those skilled in the art to think of, and will not be described in detail here.

[0040] like Figure 5 As shown, the conveying mechanism includes a push rod 56 that pushes the square tube forward and a first driving mechanism that drives the push rod 56 to move. The push rod 56 is slidably connected to the upper end of the frame 54 through a guide rail slider pair. The first driving mechanism is installed on the upper end of the frame 54. A driving mechanism is provided between the push rod 56 and the frame 54. The driving mechanism includes a belt connected to the push rod 56 and a servo motor that drives the belt to rotate. The servo motor is supported on the frame 54. The push rod 56 and the frame 54 are slidably connected through a guide rail slider pair. A pulley is provided on the output shaft of the servo motor. The pulleys are symmetrically distributed at the front and rear of the upper end of the frame 54. The pulleys are supported on the frame 54 and rotatably connected to the frame 54. The belt passes around the symmetrical pulleys and is connected to the push rod 56 by bolts. The servo motor drives the push rod 56 forward through the belt, thereby pushing the square tube forward a certain distance and pushing the frontmost square tube to the gripping mechanism. In this embodiment, a belt drive is selected. However, screw drive, chain, gear and rack drive, etc. can also be used, which are easy for those skilled in the art to think of, and will not be described in detail here.

[0041] like Figure 5As shown, the front end of the frame 54 is equipped with a striking mechanism for positioning the axial position of the square tube. The striking mechanism includes a striking plate 57 for striking the right end of the square tube and a second driving mechanism for driving the striking plate 57 to move left and right. The second driving mechanism is installed on the upper end of the frame 54. The second driving mechanism includes a belt connecting the striking plate 57 and a servo motor for driving the belt. The servo motor is supported on the frame 54, and the belt is connected to the striking plate 57 by bolts. The output shaft of the servo motor is equipped with pulleys, which are symmetrically distributed on the upper end of the frame 54. The pulleys are supported on the frame 54 and rotatably connected to the frame 54. The belt passes around the symmetrically distributed pulleys, and the servo motor drives the striking plate 57 to move left and right through the belt to continuously strike the right end of the square tube, striking the frontmost square tube to the left end position and fixing it, ensuring more accurate splicing of the mesh frame. In this embodiment, a belt drive method is used, but screw drive, chain, gear and rack drive, etc. can also be used, which are easy for those skilled in the art to think of, and will not be described in detail here.

[0042] like Figure 5 As shown, the gripping mechanism includes a fixed claw and a movable claw. The fixed claw is located to the left of the movable claw. A connecting beam 58 is provided at the front end of the lifting beam 55. The upper end of the fixed claw is fixedly connected to the connecting beam 58. The upper end of the movable claw is slidably connected to the connecting beam 58 through a guide rail slider pair. A third driving mechanism for driving the movable claw to move is provided on the connecting beam 58. The third driving mechanism includes a belt connecting the movable claw column 59 and a servo motor driving the belt. The servo motor is mounted on the connecting beam 58. The belt is connected to the upper end of the movable claw column 59 by bolts. A pulley is provided on the output shaft of the servo motor. The pulleys are symmetrically distributed at both ends of the connecting beam 58. The pulleys are supported on the frame 54 and rotatably connected to the frame 54. The belt passes around the symmetrically distributed pulleys. The servo motor drives the movable claw column 59 to move left and right through the belt, thus adapting to square tubes of different lengths and having a wide range of applications. In this embodiment, a belt drive is selected. However, screw drive, chain, gear and rack drive, etc., can also be used. These are methods that are easy for those skilled in the art to think of and will not be described in detail here.

[0043] like Figure 6As shown, both the fixed claw and the movable claw include a column 59 and a gripper 510 for supporting the square tube. The gripper 510 includes a vertical plate and a horizontal plate located at the lower end of the vertical plate. The width of the horizontal plate is the same as the width of the square tube. The lower end of the column 59 is equipped with a cylinder 511 that drives the gripper 510 to move back and forth. The cylinder body of the cylinder 511 is installed at the lower end of the column 59, and the piston rod of the cylinder 511 is connected to the gripper 510. When the lifting beam 55 moves down and places the square tube onto the conveying trolley, the fixing mechanism on the trolley fixes the square tube. Then, the cylinder 511 drives the gripper 510 to move forward, separating it from the square tube. When the lifting beam 55 moves up, it will not interfere with the square tube. The lower end of the column 59 is equipped with a pressing mechanism for pressing the square tube. The pressing mechanism includes a pressing cylinder 512. The cylinder body of the pressing cylinder 512 is connected to the column 59, and the piston rod of the pressing cylinder 512 cooperates with the square tube. When the lifting beam 55 descends, the piston rod of the pressing cylinder 512 extends to press the square tube, preventing the square tube from falling, which has good reliability.

[0044] During operation, the feeding mechanism grabs the square tube onto the upper end of the frame 54. The servo motor drives the push rod 56 to move forward, with each push distance being the width of one square tube. The distance the push rod 56 moves forward each time is determined by a sensor switch. The frontmost square tube of the push rod 56 is pushed onto the gripper, and the clamping cylinder 512 clamps the square tube on the gripper. Then, the servo motor drives the lifting beam 55 to descend, installing the square tube on the gripper onto the fixed mechanism of the conveying trolley. The cylinder 511 drives the gripper to move forward and retract, and the lifting beam 55 rises, repeating the above actions.

[0045] The front loader, rear loader, and middle loader have the same structure and operating principle. The front and rear loaders are located on either side of the welded wire mesh conveyor. Figure 8 As shown, the intermediate loader spans across the wire mesh welding conveyor and can load the vertical pipes at both ends and in the middle of the wire mesh frame.

[0046] like Figure 9 As shown, the wire mesh welding conveyor 4 includes a pallet body 41 for conveying the wire mesh and a frame 42 for supporting the pallet body 41. The pallet body 41 and the frame 42 are slidably connected by a guide rail slider pair. The frame 42 is divided into upper and lower layers, which are connected by columns. Each layer of the frame 42 corresponds to one pallet body 41. While the upper conveyor pallet is moving out of the welding station, the lower conveyor pallet, which has already clamped the wire mesh square tube, moves into the welding station simultaneously to perform welding of the lower wire mesh. In this way, the upper and lower conveyor pallets alternately enter the welding station to work without interference, cooperating with each other. The welding robot works continuously, improving efficiency. Figure 10As shown, the frame 42 includes a loading station 43, a disassembly station 44, and a welding station 45 from left to right. The loading station 43 loads the wire mesh frame, the welding station 45 welds the wire mesh frame, and the disassembly station 44 disassembles the wire mesh frame. Previously, manual loading and unloading of the wire mesh frame and square tubes were done at the welding station, with a robot above, posing a safety hazard. Now, the conveyor allows loading and unloading of the wire mesh frame and square tubes at a separate station, ensuring worker safety. This conveyor is more suitable for situations where a dedicated machine is used to load square tubes and unload welded wire mesh frames, enabling fully automated production of the wire mesh frame welding process. The lower end of the pallet body 41 is equipped with four servo motors, distributed at the four corners of the pallet body 41. Gears are mounted on the output shafts of the servo motors, and racks are located inside the frame 42, with the gears engaging with the racks. In this embodiment, the pallet body 41 and the frame 42 rotate via a gear and rack mechanism. Chains, belts, or other transmission methods can also be used, which are readily apparent to those skilled in the art and will not be elaborated upon here.

[0047] like Figure 11 and Figure 12 The pallet body 41 shown includes a second fixed crossbeam 46 and a second movable crossbeam 47 for pressing the longitudinal bars of the mesh frame. The second fixed crossbeam 46 is installed on the upper end of the pallet body 41 by screws. The axis of the longitudinal bars is in the front-to-back direction, and the axis of the crossbeam 47 is in the left-to-right direction. The two ends of the second movable crossbeam 47 are slidably connected to the pallet body 41 by guide rail slider pairs. Both ends of the second movable crossbeam 47 are provided with a sixth drive mechanism for driving the movement of the second movable crossbeam 47. The sixth drive mechanism includes a servo motor, which is installed at the lower end of the second movable crossbeam 47. A mounting plate is provided at the lower end of the second movable crossbeam 47, and the servo motor is fixed on the mounting plate. A gear is provided on the output shaft of the servo motor, and a rack is provided on the inner side of the pallet body 41. The gear meshes with the rack. When the servo motor rack rotates, the rack meshes with the rack, thereby driving the second movable crossbeam 47 to move back and forth, pressing the longitudinal and transverse bars of the mesh frame. In this embodiment, a gear and rack drive method is used. Chain or belt transmission methods can also be used, which are easy for those skilled in the art to think of, and will not be elaborated on here. Both the second fixed crossbeam 46 and the second movable crossbeam 47 are equipped with fixing mechanisms for positioning the mesh frame. During operation, the two crossbars on both sides of the mesh frame are fixed to the second fixed crossbeam 46 and the second movable crossbeam 47 respectively. Then, the fixing mechanisms on the second fixed crossbeam 46 and the second movable crossbeam 47 position the ends of the longitudinal bars of the mesh frame. The second movable crossbeam 47 moves to press the longitudinal bars of the mesh frame, so that the longitudinal bars and crossbars form a mesh frame structure, facilitating welding. This allows for automatic adjustment and positioning of mesh frames of various shapes and sizes, offering high flexibility. The fixing mechanisms are symmetrically distributed front and back.

[0048] like Figure 11As shown, the fixing mechanism includes a first positioning mechanism 48 for fixing the left end of the crossbeam and the end of the left longitudinal bar, a second positioning mechanism 49 for fixing the middle position of the crossbeam and the end of the middle longitudinal bar, and a third positioning mechanism 410 for fixing the right end of the crossbeam and the end of the right longitudinal bar. The first positioning mechanism 48 and the second positioning mechanism 49 are slidably connected to the corresponding crossbeams, and the third positioning mechanism 410 is fixedly connected to the corresponding crossbeam. The first positioning mechanism 48 and the second positioning mechanism 49 move laterally synchronously to adjust the positioning position of the square tube in the height direction of the mesh frame, and the crossbeam moves longitudinally to adjust the positioning position of the square tube in the width direction of the mesh frame.

[0049] like Figure 13As shown, the first positioning mechanism 48 includes a first base plate 481 and a fifth driving mechanism for driving the first base plate 481 to move left and right. The first base plate 481 and the corresponding crossbeam are slidably connected by a guide rail slider pair. The fifth driving mechanism includes a servo motor and a gear. The inner sides of the second fixed crossbeam 46 and the second movable crossbeam 47 are provided with racks. The servo motor is mounted on the first base plate 481, and the gear is mounted on the output shaft of the servo motor. The gear meshes with the rack. The first base plate 481 is provided with a positioning mechanism for positioning the end of the crossbar, a first fixing mechanism for fixing the end of the crossbar, a second fixing mechanism for fixing the end of the left longitudinal bar, and a first pressing mechanism for pressing the mesh frame. The positioning mechanism includes a first cylinder 482 and a first pressure plate 483. The first cylinder 482 is mounted on a first base plate 481, and the first pressure plate 483 is mounted on the piston rod end of the first cylinder 482. The first pressure plate 483 cooperates with the end of the crossbar. When the piston rod of the first cylinder 482 extends, it presses the crossbar, thereby positioning the left end of the crossbar. The first fixing mechanism includes a second cylinder 484 and a second pressure plate 485. The second cylinder 484 is mounted on the first base plate 481, and the second pressure plate 485 is mounted on the piston rod end of the second cylinder 484. The second pressure plate 485 cooperates with the outer side of the crossbar. A first positioning block 486 is provided on the first base plate 481 to position the inner side of the crossbar. The second pressure plate 485 and the first positioning block 486 cooperate to clamp the left end of the crossbar. The second fixing mechanism includes a third cylinder 487 and a third pressure plate 488. The third cylinder 487 is mounted on the first base plate 481, and the third pressure plate 488 is mounted on the first base plate 481. The piston rod end of the third cylinder 487 is connected to the outer side of the third pressure plate 488, and the first base plate 481 is provided with a second positioning block 489 for positioning the inner side of the longitudinal rod. The third pressure plate 488 and the second positioning block 489 cooperate to clamp the end of the longitudinal rod. The clamping mechanism includes a first clamping cylinder 4810 and a first rotating plate 4811 for clamping the upper surface of the left end of the crossbar and the upper surface of the end of the left longitudinal rod. The first clamping cylinder 4810 is supported on the first base plate 481, and a mounting seat is provided on the first base plate 481. The cylinder end of the first clamping cylinder 4810 is rotatably connected to the mounting seat. The lower end of the first rotating plate 4811 is rotatably connected to the first base plate 481. The piston rod end of the first clamping cylinder 4810 is rotatably connected to the middle position of the first rotating plate 4811. The first clamping cylinder 4810 drives the first rotating plate 4811 to rotate, thereby realizing the clamping of the upper surface of the left end of the crossbar and the upper surface of the end of the left longitudinal rod.

[0050] like Figure 14As shown, the second positioning mechanism 49 can be adjusted according to the number of vertical bars. In this embodiment, there is only one pair of second positioning mechanisms 49, corresponding to only one vertical bar in the mesh frame. The second positioning mechanism 49 includes a second base plate 491 and a sixth driving mechanism for driving the second base plate 491 to move left and right. The sixth driving mechanism includes a servo motor and a gear. The servo motor is mounted on the second base plate 491, and the gear is mounted on the output shaft of the servo motor. The gear meshes with a rack on the corresponding crossbeam. The servo motor drives the gear to rotate, thereby driving the second base plate 491 to move left and right. The second base plate 491 is slidably connected to the corresponding crossbeam through a guide rail slider pair. The second base plate 491 has a third fixing mechanism for fixing the middle part of the crossbar, a fourth fixing mechanism for fixing the end of the middle vertical bar, and a second pressing mechanism for pressing the mesh frame. The third fixing mechanism includes a fourth cylinder 492 and a fourth pressure plate 493. The fourth cylinder 492 is mounted on the second base plate 491, and the fourth pressure plate 493 is mounted on the piston rod end of the fourth cylinder 492. The fourth pressure plate 493 mates with the outer side of the middle position of the crossbar. The second base plate 491 is provided with a third positioning block 494 for positioning the inner side of the crossbar. The fourth pressure plate 493 and the third positioning block 494 cooperate to clamp the middle position of the crossbar. The fourth fixing mechanism includes a fifth cylinder 495 and a fifth pressure plate 496. The fifth cylinder 495 is mounted on the second base plate 491, and the fifth pressure plate 496 is mounted on the piston rod end of the fifth cylinder 495. The second base plate 491 is provided with a fourth positioning block 497 for positioning the longitudinal rod. The pressure plate 496 and the fourth positioning block 497 cooperate to clamp the end of the longitudinal rod; the second clamping mechanism includes a second clamping cylinder 498 and a second rotating plate 499 for clamping the upper surface of the crossbar and the upper surface of the end of the middle longitudinal rod. The second clamping cylinder 498 is supported on the second base plate 491, and a mounting seat is provided on the second base plate 491. The cylinder end of the second clamping cylinder 498 is rotatably connected to the mounting seat. The lower end of the second rotating plate 499 is rotatably connected to the second base plate 491. The piston rod end of the second clamping cylinder 498 is rotatably connected to the middle position of the second rotating plate 499. The second clamping cylinder 498 drives the first rotating plate 4811 to rotate, thereby realizing the clamping of the upper surface of the left end of the crossbar and the upper surface of the end of the left longitudinal rod.

[0051] like Figure 15As shown, the third positioning mechanism 410 includes a third base plate 4101, which is fixedly connected to the corresponding crossbeam. The third base plate 4101 is provided with a positioning plate 4102 for positioning the end of the crossbar, a fifth fixing mechanism for fixing the end of the crossbar, a sixth fixing mechanism for fixing the end of the right longitudinal bar, and a third pressing mechanism for pressing the mesh frame. The fifth fixing mechanism includes a sixth cylinder 4103 and a sixth pressure plate 4104. The sixth cylinder 4103 is mounted on the third base plate 4101, and the sixth pressure plate 4104 is mounted on the piston rod end of the sixth cylinder 4103. The sixth pressure plate 4104 cooperates with the outer side of the right end of the crossbar. The third base plate 4101 is provided with a fifth positioning block 4105 for positioning the inner side of the crossbar. The sixth pressure plate 4104 and the fifth positioning block 4105 cooperate to clamp the right end of the crossbar. The sixth fixing mechanism includes a seventh cylinder 4106 and a seventh pressure plate 4107. The seventh cylinder 4106 is mounted on the third base plate 4101, and the seventh pressure plate 4107 is mounted on the piston rod end of the seventh cylinder 4106. The third base plate 4101 is provided with a sixth positioning block 4108 for positioning the longitudinal rod. The seventh pressure plate 4107 and the sixth positioning block 4108 cooperate to clamp the end of the longitudinal rod; the third clamping mechanism includes a third clamping cylinder 4109 and a third rotating plate 4110 for clamping the upper surface of the crossbar and the upper surface of the end of the middle longitudinal rod. The third clamping cylinder 4109 is supported on the third base plate 4101, and the third base plate 4101 is provided with a mounting seat. The cylinder end of the third clamping cylinder 4109 is rotatably connected to the mounting seat. The lower end of the third rotating plate 4110 is rotatably connected to the third base plate 4101. The piston rod end of the third clamping cylinder 4109 is rotatably connected to the middle position of the third rotating plate 4110. The third clamping cylinder 4109 drives the third rotating plate 4110 to rotate, thereby realizing the clamping of the upper surface of the left end of the crossbar and the upper surface of the end of the left longitudinal rod.

[0052] It also includes lifting cylinders for lifting the mesh frame. Each lifting cylinder corresponds to a fixing mechanism. The cylinder body of the lifting cylinder is mounted on the corresponding base, and the piston rod of the lifting cylinder passes through the corresponding base and engages with the mesh frame to lift the mesh frame for easy disassembly.

[0053] According to the required mesh frame size, the fixing mechanism and moving crossbeam on the conveyor pallet are first adjusted to a position slightly larger than the target mesh frame size to facilitate material loading. Then, the crossbars and vertical bars are manually placed into the conveyor pallet in sequence and fixed by the first positioning mechanism 48, the second positioning mechanism 49 and the third positioning mechanism 410.

[0054] The piston rod of the first cylinder on the first positioning mechanism 48 extends, and the first pressure plate presses the horizontal tube, cooperating with the positioning plate to fix the axial position of the horizontal bar. Then, the piston rods of the second, fourth, and sixth cylinders extend to clamp the horizontal square tube. Then, the moving beam moves to the end of the longitudinal bar and contacts the horizontal bar. At this time, the piston rods of the third, fifth, and seventh cylinders extend to clamp the longitudinal square tube. Then, the rotating plate performs a downward pressing action to firmly press and fix all the longitudinal and horizontal bars. Then, the entire pallet body moves to transport the clamped and fixed wire mesh frame square tube to the welding station for welding. After welding, the upper conveying pallet moves out of the welding station and moves to the disassembly station. The rotating plate and each pressure plate open in sequence, and the piston rod of the lifting cylinder extends to lift the welded wire mesh frame upward, making it easy for manual or special equipment to remove the wire mesh frame from the conveying pallet. Then, the blower head on the base blows air to clean the welding slag on each positioning pallet, so as not to affect the wire mesh frame to be clamped later, ensuring more accurate clamping. As the upper conveyor pallet moves out of the welding station, the lower conveyor pallet, with the pre-clamped wire mesh square tubes, simultaneously moves into the welding station for welding of the lower wire mesh frame. This alternating entry and exit of the upper and lower conveyor pallets into the welding station ensures they do not interfere with each other, allowing the welding robot to work continuously and improving efficiency.

[0055] During welding, the destacking and loading robot first picks up the square tubes from the top layer of the horizontally stacked raw material transport carts using a vacuum suction cup, and places them onto the platforms of the front and rear loaders. Then, it picks up the square tubes from the top layer of the vertically stacked raw material transport carts using the same vacuum suction cup, and places them onto the platform of the middle loader. At this time, one of the conveyor pallets of the wire mesh welding conveyor is waiting to be unloaded at the loading station. Figure 7 As shown, the front loader and the rear loader then simultaneously pick up the raw material square tubes from the rack using gripper arms, and the lifting beam lowers to place them onto the fixing mechanism of the conveying pallet. The top clamping cylinder and the lateral clamping cylinder extend in sequence to clamp the raw material square tubes. Then, the moving beam moves along the Y direction to a suitable position, as shown. Figure 8As shown, the conveyor pallet moves laterally to below the intermediate loader. The intermediate loader sequentially places the raw material square tubes onto the fixing mechanism of the conveyor pallet, using the same placement principle as the front loader. Then, the moving beam moves longitudinally until all the ends of the raw material square tubes are close together, completing the splicing. The clamping cylinder presses down, clamping all the raw material square tubes. Then, the conveyor pallet, carrying the clamped and positioned raw material square tubes, is conveyed to the disassembly station, where it waits. At this time, another conveyor pallet is welding the mesh frame at the welding station. After welding is completed, the conveyor pallet at the welding station and the conveyor pallet at the mesh frame picking station exchange positions because the two conveyors of the mesh frame welding conveyor... The conveyor pallets are at different heights, so their movement does not interfere with each other. The conveyor pallets that later enter the welding station begin welding the wire mesh frame. The conveyor pallets that have already been welded open the clamping cylinders at the disassembly station, release the various positioning cylinders, and extend the lifting cylinders to lift the welded finished wire mesh frame. At this time, the unloading and crating robot above the disassembly station descends, picks up the welded finished wire mesh frame, then rises, moves to above the finished product transport vehicle, descends, and puts the welded wire mesh frame into the finished product transport vehicle. Thus, one welding conveyor cycle is completed. The conveyor pallet with the finished wire mesh frame removed returns to the initial clamping station to start the next conveyor welding cycle.

[0056] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A welding equipment and method based on pipe-gripping vehicle component processing, comprising a raw material transport vehicle (1) for conveying square tubes, a welding machine (2) for welding mesh frames, and a finished product transport vehicle (3) for conveying finished mesh frames, characterized in that, It also includes a wire mesh welding conveyor (4) for conveying wire mesh frames, a loader (5) for loading square tubes onto the wire mesh welding conveyor (4), a stacking and loading mechanism (6) for grabbing square tubes from the raw material transport vehicle (1) onto the loader (5), and a loading and unloading mechanism (7) for taking the welded wire mesh frames onto the finished product transport vehicle (3), wherein the raw material of the finished wire mesh frame is square tubes, and the wire mesh frame is composed of crossbars and longitudinal bars; It also includes a bracket (8) for supporting the destacking and loading mechanism (6) and the unloading and framing mechanism (7), wherein the destacking and loading mechanism (6) is supported on the bracket (8) and is movably connected to the bracket (8); The loader (5) is divided into a front loader (51) located in front of the wire mesh welding conveyor (4), a rear loader (52) located at the rear of the wire mesh welding conveyor (4), and a middle loader (53) supported on the wire mesh welding conveyor (4). The loader (5) includes a frame (54) for supporting square tubes, a lifting beam (55) for lowering and releasing materials, a conveying mechanism for conveying square tubes forward, and a gripping mechanism for gripping single square tubes. The lifting beam (55) is slidably connected to the frame (54). The conveying mechanism is installed on the upper end of the frame (54), and the gripping mechanism is installed on the front end of the lifting beam (55). The conveying mechanism includes a push rod (56) that pushes the square tube forward and a first driving mechanism that drives the push rod (56) to move. The push rod (56) is slidably connected to the upper end of the frame (54), and the first driving mechanism is installed on the upper end of the frame (54). The front end of the frame (54) is provided with a striking mechanism for positioning the axial position of the square tube. The striking mechanism includes a striking plate (57) for striking the right end of the square tube and a second driving mechanism for driving the striking plate (57) to move. The second driving mechanism is installed on the upper end of the frame (54). The gripping mechanism includes a fixed claw and a movable claw. A connecting beam (58) is provided at the front end of the lifting beam (55). The upper end of the fixed claw is fixedly connected to the connecting beam (58), and the upper end of the movable claw is slidably connected to the connecting beam (58). A third driving mechanism for driving the movable claw to move is provided on the connecting beam (58). Both the fixed claw and the movable claw include a column (59) and a clamping claw (510) for carrying the square tube. The lower end of the column (59) is provided with a cylinder (511) for driving the clamping claw (510) to move back and forth. The lower end of the column (59) is provided with a clamping mechanism for clamping the square tube. The clamping mechanism includes a clamping cylinder (512). The cylinder body end of the clamping cylinder (512) is connected to the column (59), and the piston rod end of the clamping cylinder (512) is engaged with the square tube. The wire mesh welding conveyor (4) includes a pallet body (41) for conveying wire mesh and a frame (42) for supporting the pallet body (41). The pallet body (41) and the frame (42) are slidably connected. The frame (42) is divided into upper and lower layers. Each layer of the frame (42) corresponds to a pallet body (41). The frame (42) includes a loading station (43), a disassembly station (44), and a welding station (45) from left to right. The pallet body (41) is provided with a second fixed crossbeam (46) and a second movable crossbeam (47) for pressing the longitudinal bars of the wire mesh frame. The two ends of the second movable crossbeam (47) are slidably connected to the pallet body (41) through a guide rail slider pair. Both ends of the second movable crossbeam (47) are provided with a sixth driving mechanism for driving the second movable crossbeam (47) to move. The second fixed crossbeam (46) and the second movable crossbeam (47) are both provided with a fixing mechanism for positioning the wire mesh frame. The fixing mechanisms are symmetrically distributed front and back. The fixing mechanism includes a first positioning mechanism (48) for fixing the left end of the crossbar and the end of the left longitudinal bar, a second positioning mechanism (49) for fixing the middle position of the crossbar and the end of the middle longitudinal bar, and a third positioning mechanism (410) for fixing the right end of the crossbar and the end of the right longitudinal bar. The first positioning mechanism (48) and the second positioning mechanism (49) are slidably connected to the corresponding crossbeams, and the third positioning mechanism (410) is fixedly connected to the corresponding crossbeams.

2. The welding equipment and method based on pipe-grabbing vehicle component processing as described in claim 1, characterized in that, The stacking and loading mechanism (6) includes a first movable crossbeam (61) and a loading robot (62) for gripping square tubes. The two ends of the first movable crossbeam (61) are slidably connected to the support (8), and the loading robot (62) is movably connected to the first movable crossbeam (61). The unloading and framing mechanism (7) includes a first fixed crossbeam (71) and an unloading robot (72) for gripping finished wire mesh frames. The two ends of the first fixed crossbeam (71) are fixedly connected to the support (8), and the unloading robot (72) is movably connected to the first fixed crossbeam (71).

3. The welding equipment and method based on pipe-grabbing vehicle component processing as described in claim 1, characterized in that, The raw material transport vehicle (1) includes a raw material transport vehicle for providing lateral movement of raw materials to the front loader (51) and the rear loader (52), and a raw material transport vehicle for providing longitudinal movement of raw materials to the middle loader (53). The lateral movement raw material transport vehicles are arranged side by side, and the longitudinal movement raw material transport vehicles are arranged side by side.

4. The welding equipment and method based on pipe-grabbing vehicle component processing as described in claim 1, characterized in that, The first positioning mechanism (48) includes a first base plate (481) and a fifth driving mechanism for driving the first base plate (481) to move left and right. The first base plate (481) and the corresponding crossbeam are slidably connected by a guide rail slider pair. The first base plate (481) is provided with a positioning mechanism for positioning the end of the crossbar, a first fixing mechanism for fixing the end of the crossbar, a second fixing mechanism for fixing the end of the left longitudinal bar, and a first pressing mechanism for pressing the mesh frame.

5. The welding equipment and method based on pipe-grabbing vehicle component processing as described in claim 1, characterized in that, The second positioning mechanism (49) includes a second base plate (491) and a sixth driving mechanism for driving the second base plate (491) to move left and right. The second base plate (491) and the corresponding crossbeam are slidably connected by a guide rail slider pair. The second base plate (491) has a third fixing mechanism for fixing the middle part of the crossbar, a fourth fixing mechanism for fixing the end of the middle longitudinal bar, and a second pressing mechanism for pressing the mesh frame.

6. The welding equipment and method based on pipe-grabbing vehicle component processing as described in claim 1, characterized in that, The third positioning mechanism (410) includes a third base plate (4101), which is fixedly connected to the corresponding crossbeam. The third base plate (4101) is provided with a positioning plate (4102) for positioning the end of the crossbar, a fifth fixing mechanism for fixing the end of the crossbar, a sixth fixing mechanism for fixing the end of the right longitudinal bar, and a third pressing mechanism for pressing the mesh frame.

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