An intelligent welding production line for automobile body assemblies

Abstract

The present invention relates to the field of automobile body welding equipment, and discloses an intelligent automobile body assembly welding production line, including a support mechanism that can support the vehicle body, move it up and down, and swing it left and right or front and back, a positioning mechanism for rotating and adjusting the positioning of the vehicle body, a manipulator control mechanism for positioning and controlling the welding structure of the vehicle body, and a transfer mechanism for transferring the completed vehicle body. The end of the piston rod of the first hydraulic cylinder is installed on the connecting block on the upper side of the front end of the fixing plate. By installing the welding manipulator on the arched bridge frame, controlling its movement with a linear motion module, and then controlling the welding manipulator to move around the vehicle body by the third hydraulic cylinder, the present invention realizes all-round welding actions. The use of a square platform allows the vehicle body to swing and rotate left and right and front and back, facilitating the welding manipulator to find the best welding position, thereby improving the welding quality.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile body welding equipment, and particularly to an intelligent automobile body assembly welding production line. Background Art

[0002] The automobile manufacturing industry is becoming increasingly developed. An automobile production line usually consists of several different types of production lines, among which the welding production line is particularly important as it determines the firmness and quality of the vehicle body. Automobile parts need to undergo pre-welding treatment on the welding line before being further welded by welding equipment. Pre-welding has an initial connection and fixation effect on the parts. The basic core of the welding line is the welding fixture, and the rest of the equipment forms a production line with complete functions around the welding fixture.

[0003] The traditional welding method is to place the automobile body on a linear guide rail and send it into the welding workshop by the linear guide rail. Usually, there are four to six welding robots equipped with laser welding guns in the welding workshop, which perform welding operations around the entire body of the vehicle. After completion, the body is sent to the next workshop through the linear guide rail. This method has many problems in actual use. Firstly, since the linear guide rail is generally in a fixed state, it cannot adjust the angle and rotation of the vehicle body, and some welding positions of the vehicle body are relatively hidden, resulting in the welding robot being unable to find the optimal welding position, thus affecting the welding quality. Secondly, the number of welding robots used in a single workshop is relatively large, greatly increasing the processing cost, and the robot itself cannot adjust its position, which may affect the normal progress of the welding work. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides an intelligent automobile body assembly welding production line, which solves the problems that the vehicle body cannot be adjusted in angle and rotated, and some welding positions of the vehicle body are relatively hidden, resulting in the welding robot being unable to find the optimal welding position, thus affecting the welding quality, and that the number of welding robots used is relatively large, greatly increasing the processing cost.

[0005] To achieve the above object, the present invention is realized through the following technical solutions: An intelligent automobile body assembly welding production line includes a support mechanism that can support the vehicle body, move it up and down, and swing it left and right or back and forth, a positioning mechanism for rotating and adjusting the position of the vehicle body, a manipulator control mechanism for positioning and controlling the welding structure of the vehicle body, and a transfer mechanism for transferring the completed vehicle body.

[0006] The support mechanism includes a base, a first hydraulic cylinder is installed in the middle of the top end of the base, the end of the piston rod of the first hydraulic cylinder is installed on a connecting block on the upper side of the front end of a fixing plate, a second hydraulic cylinder is installed at the rear end of the fixing plate, a driving end of the second hydraulic cylinder is installed with a mounting plate, the top end of the mounting plate is installed in the middle of the bottom end of a square platform, and electric cylinders are installed at the four corners of the top end of the square platform through universal shaft seats.

[0007] The positioning mechanism includes a fixed platform, the ends of the electric cylinders are respectively movably connected to the four corners of the bottom end of the fixed platform, a cavity is provided in the middle of the fixed platform, a movable platform is movably connected to the top of the cavity, and docking slide rails are installed on both sides of the top end of the movable platform through fixing frames.

[0008] The manipulator control mechanism includes two linear motion modules, the linear motion modules are respectively installed on both sides of the base, sliders are provided in the middle of the linear motion modules, and the top ends of the sliders are respectively fixedly connected to both sides of the bottom end of an arch-shaped bridge.

[0009] On both sides of the top end of the support mechanism near the first hydraulic cylinder, first guide rails are provided, on both sides of the front end of the fixing plate, first guide rods are fixedly connected, the first guide rods are respectively movably connected to the inside of the corresponding side first guide rails, on both sides of the rear end of the fixing plate, second guide rails are fixedly connected, on both sides of the bottom end of the mounting plate, second guide rods are fixedly connected, and the second guide rods are respectively movably connected to the inside of the corresponding side second guide rails.

[0010] A ring gear is fixedly connected to the bottom end of the movable platform, a servo motor is installed in the middle of the bottom wall of the cavity, a driving end of the servo motor is fixedly connected with a driving bevel gear, a movable shaft is movably connected to one side of the bottom wall of the cavity, an outer diameter on the upper side of the movable shaft is fixedly connected with a driven bevel gear, one side of the driven bevel gear is meshed with the top of the driving bevel gear, a transmission gear is installed at the top end of the movable shaft, and one side of the transmission gear is meshed with the inner side end of the ring gear.

[0011] Spring rods are movably connected to the four corners of the top end of the base, and the ends of the spring rods are respectively movably connected to the four corners of the bottom end of the fixed platform.

[0012] Arc-shaped grooves are provided inside the curved sections on both sides of the upper part of the arch-shaped bridge, and the inner side ends and the front ends of the arc-shaped grooves are both communicated with the outside, arc-shaped guide rods are fixedly connected inside the arc-shaped grooves, movable blocks are movably connected to the middle of the arc-shaped guide rods, and welding manipulators are installed at the inner side ends of the movable blocks.

[0013] The front ends of the top ends of the sliders are respectively movably connected to one end of a third hydraulic cylinder, and the other ends of the third hydraulic cylinders are respectively movably connected to the front fixing frames of the movable blocks.

[0014] The transfer mechanism includes a telescopic cylinder, which is installed in the middle of the top of the arched bridge frame. The driving end of the telescopic cylinder penetrates through the top of the arched bridge frame and is fixedly connected to the middle of the top end of the mounting frame. A number of pneumatic suction nozzles are evenly installed at the bottom end of the mounting frame.

[0015] Working principle: The vehicle body to be welded is conducted into the middle docking slide rail through the docking slide rail on the left side. Subsequently, the first hydraulic cylinder drives the piston rod to rise, driving the connecting block and the fixed plate to rise, thereby driving the top structure to rise, separating and raising the middle docking slide rail from the front and back sides. Then, the welding manipulator can be controlled to perform the vehicle body welding work. By driving the piston rod of the second hydraulic cylinder to lift and lower, the mounting plate and the top structure are driven to lift and lower, realizing the lifting adjustment work of the vehicle body. By the lifting of the four electric cylinders, the fixed platform and the vehicle body on the top can be controlled to tilt left and right or front and back, thereby adjusting the welding angle. By driving the driving bevel gear to rotate by the servo motor, the driven bevel gear and the movable shaft are driven to rotate, thereby driving the transmission gear to rotate. The transmission gear drives the movable table, the docking slide rail and the vehicle body to rotate through meshing transmission with the internal gear, further adjusting the welding angle. By driving the internal piston rod of the third hydraulic cylinder to extend and retract, the movable block can be driven to move along the arc-shaped guide rod, so that the welding manipulator extends around the vehicle body to move, performing a full-range welding action. Then, the linear motion module controls the slider to move, driving the arched bridge frame and the welding manipulator to move back and forth, performing a full-range welding action on the vehicle body. When the welding is completed, the first hydraulic cylinder controls the top structure to reset, making the front and back docking slide rails reconnect. Then, the telescopic cylinder controls the mounting frame to descend, so that the pneumatic suction nozzles adsorb and fix on the top of the vehicle body. Subsequently, the linear motion module drives the vehicle body to move, moving the vehicle body to the next docking slide rail for the next vehicle body processing action.

[0016] The present invention provides an intelligent automobile body assembly welding production line. It has the following beneficial effects:

[0017] 1. In the present invention, by installing the welding manipulator on the arched bridge frame, controlling its movement by the linear motion module, and then driving the welding manipulator to extend around the vehicle body by the third hydraulic cylinder to move, a full-range welding action is realized. Compared with traditional welding work, fewer welding manipulators are used, the cost is reduced, the adjustable angle is larger, and the vehicle body welding requirements are better met.

[0018] 2. In the present invention, by using the four electric cylinders of the square platform in cooperation with the fixed platform, the vehicle body can be swung left and right and front and back, realizing the deflection of the vehicle body welding angle. At the same time, the control mechanism inside the cavity can control the vehicle body on the docking slide rail to rotate, so that when the welding manipulator moves, the vehicle body can be freely adjusted according to the position of the welding manipulator, facilitating the welding manipulator to find the best welding position, thereby improving the welding quality. Description of the Drawings

[0019] Figure 1 is a perspective view of the present invention;

[0020] Figure 2 is a schematic structural view of the first hydraulic cylinder in the present invention;

[0021] Figure 3 is a schematic internal structural view of the fixed table in the present invention;

[0022] Figure 4 is a front view of the arched bridge frame in the present invention;

[0023] Figure 5 is a docking schematic view of the docking slide rail in the present invention.

[0024] Among them, 1. Support mechanism; 101. Base; 102. First hydraulic cylinder; 103. Fixed plate; 104. Connecting block; 105. Second hydraulic cylinder; 106. Mounting plate; 107. First guide rail; 108. First guide rod; 109. Second guide rail; 110. Second guide rod; 111. Square platform; 112. Electric cylinder; 2. Positioning mechanism; 201. Fixed table; 202. Cavity; 203. Movable table; 204. Internal gear; 205. Servo motor; 206. Active bevel gear; 207. Movable shaft; 208. Driven bevel gear; 209. Transmission gear; 210. Docking slide rail; 211. Spring rod; 3. Manipulator control mechanism; 301. Linear motion module; 302. Slide block; 303. Arched bridge frame; 304. Arc groove; 305. Arc guide rod; 306. Movable block; 307. Welding manipulator; 308. Third hydraulic cylinder; 4. Transfer mechanism; 401. Telescopic cylinder; 402. Mounting frame; 403. Pneumatic suction nozzle. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Embodiment:

[0027] Please refer to the attached Figure 1 - attached Figure 5 , the embodiment of the present invention provides an intelligent automobile body assembly welding production line, as Figure 1As shown in the figure, it includes a support mechanism 1 that can support the vehicle body, move it up and down, and swing it left and right or front and back, a positioning mechanism 2 for rotating and adjusting the positioning of the vehicle body, a manipulator control mechanism 3 for positioning and controlling the welding structure of the vehicle body, and a transfer mechanism 4 for transferring the completed vehicle body.

[0028] In this embodiment, the support mechanism 1 includes a base 101. In the middle of the top end of the base 101, a first hydraulic cylinder 102 is installed. The end of the piston rod of the first hydraulic cylinder 102 is installed on a connecting block 104 on the upper side of the front end of a fixed plate 103. When the first hydraulic cylinder 102 drives the piston rod to rise, it drives the connecting block 104 and the fixed plate 103 to rise, thereby driving the top structure to rise, separating and rising the middle docking slide rail 210 on the front and back sides. A second hydraulic cylinder 105 is installed at the rear end of the fixed plate 103. The driving end of the second hydraulic cylinder 105 is installed with a mounting plate 106. The top end of the mounting plate 106 is installed in the middle of the bottom end of a square platform 111. By driving the internal piston rod of the second hydraulic cylinder 105 to rise and fall, it drives the square platform 111 and the top structure to rise and fall, realizing the lifting adjustment of the vehicle body. Electric cylinders 112 are installed at the four corners of the top end of the square platform 111 through universal shaft seats. By the lifting of the four electric cylinders 112, the fixed table 201 and the vehicle body on the top can be controlled to tilt left and right or front and back, so as to adjust the welding angle.

[0029] Specifically, an intelligent control system is used to intelligently adjust the four electric cylinders 112 on the square platform 111. At the same time, the same length of the electric cylinders 112 on the same side is used as the control standard. When it is necessary to tilt the square platform 111 to the left, the two electric cylinders 112 on the left are controlled to extend while the right ones remain unchanged. When tilting to the right, it is the opposite. When it is necessary to tilt the square platform forward, the two electric cylinders 112 on the front side are controlled to extend while the rear ones remain unchanged. When tilting backward, it is the opposite.

[0030] Furthermore, on both sides of the top end of the support mechanism 1 near the first hydraulic cylinder 102, first guide rails 107 are provided. On both sides of the front end of the fixed plate 103, first guide rods 108 are fixedly connected. The first guide rods 108 are all movably connected inside the corresponding first guide rails 107, which can improve the stability during lifting. On both sides of the rear end of the fixed plate 103, second guide rails 109 are fixedly connected. On both sides of the bottom end of the mounting plate 106, second guide rods 110 are fixedly connected. The second guide rods 110 are all movably connected inside the corresponding second guide rails 109, which can improve the stability during lifting.

[0031] Further, the positioning mechanism 2 includes a fixed platform 201 for connection and fixation. The ends of the electric cylinders 112 are respectively movably connected to the four corners of the bottom end of the fixed platform 201. By lifting the four electric cylinders 112, the fixed platform 201 and the vehicle body on the top can be controlled to tilt left and right or front and back, so as to adjust the welding angle. A cavity 202 is provided in the middle of the fixed platform 201. A movable platform 203 is movably connected to the top of the cavity 202 and is connected to the top through a bearing seat to facilitate the rotation of the vehicle body. Docking slide rails 210 are installed on both sides of the top end of the movable platform 203 through fixed brackets. The vehicle body is placed on the docking slide rails 210, and the vehicle body is fixed by an electric magnetic attraction method inside, and at the same time, the vehicle body can slide.

[0032] Further, the bottom end of the movable platform 203 is fixedly connected with an internal gear 204. A servo motor 205 is installed in the middle of the bottom wall of the cavity 202. The driving end of the servo motor 205 is fixedly connected with a driving bevel gear 206. A movable shaft 207 is movably connected to one side of the bottom wall of the cavity 202. An outer diameter on the upper side of the movable shaft 207 is fixedly connected with a driven bevel gear 208. One side of the driven bevel gear 208 is meshed with the top of the driving bevel gear 206. A transmission gear 209 is installed at the top end of the movable shaft 207. One side of the transmission gear 209 is meshed with the inner side end of the internal gear 204 to facilitate the transmission of motion.

[0033] Specifically, the servo motor 205 drives the driving bevel gear 206 to rotate, drives the driven bevel gear 208 and the movable shaft 207 to rotate, thereby driving the transmission gear 209 to rotate. The transmission gear 209 drives the movable platform 203, the docking slide rails 210 and the vehicle body to rotate through meshing transmission with the internal gear 204, further adjusting the welding angle.

[0034] Further, spring rods 211 are movably connected to the four corners of the top end of the base 101. The ends of the spring rods 211 are respectively movably connected to the four corners of the bottom end of the fixed platform 201, which can buffer the fixed platform 201 when it sways left and right or front and back, improving stability.

[0035] Further, the manipulator control mechanism 3 includes two linear motion modules 301. In this embodiment, it is composed of a stepper motor, a ball screw and a linear guide rail, and can also be controlled by a cylinder and a guide rail. The linear motion modules 301 are respectively installed on both sides of the base 101. Sliders 302 are provided in the middle of the linear motion modules 301. The top ends of the sliders 302 are respectively fixedly connected to both sides of the bottom end of the arched bridge 303, and the shape is arched, specifically divided into an arc section, a straight section and an arc section.

[0036] Further, arc-shaped grooves 304 are provided inside the upper bending sections on both sides of the arched bridge frame 303, and the inner ends and front ends of the arc-shaped grooves 304 are both connected to the outside. That is, open grooves are provided at the inner ends and front sides of the arc-shaped grooves 304, and the open grooves are connected to the outside. Arc-shaped guide rods 305 are fixedly connected inside the arc-shaped grooves 304 to improve the stability of the moving block 306 during movement. The middle parts of the arc-shaped guide rods 305 are movably connected to the moving blocks 306. The outer walls of the moving blocks 306 are fitted with the inner walls of the arc-shaped grooves 304. Welding manipulators 307 are installed at the inner ends of the moving blocks 306. The main welding mechanism is a laser welding manipulator.

[0037] Further, the front ends of the tops of the sliders 302 are movably connected to one ends of the third hydraulic cylinders 308, and the other ends of the third hydraulic cylinders 308 are movably connected to the front fixing frames of the moving blocks 306. By the telescopic movement of the piston rods inside the third hydraulic cylinders 308, the positions of the moving blocks 306 inside the arc-shaped grooves 304 can be controlled, thereby adjusting the positions of the welding manipulators 307.

[0038] Specifically, by driving the piston rods inside the third hydraulic cylinders 308 to expand and contract, the moving blocks 306 can be driven to move along the arc-shaped guide rods 305, so that the welding manipulators 307 extend around the body of the vehicle for movement to perform all-round welding operations. Then, by controlling the movement of the sliders 302 through the linear motion module 301, the arched bridge frame 303 and the welding manipulators 307 are driven to move back and forth to perform all-round welding operations on the vehicle body.

[0039] Further, the transfer mechanism 4 includes a telescopic cylinder 401. The telescopic cylinder 401 is installed in the middle of the top of the arched bridge frame 303. The driving end of the telescopic cylinder 401 penetrates through the top of the arched bridge frame 303 and is fixedly connected to the middle of the top of the mounting frame 402. A plurality of pneumatic suction nozzles 403 are evenly installed at the bottom end of the mounting frame 402. Connecting solenoid valves and air pumps can generate strong suction to fix the vehicle body.

[0040] Specifically, after welding is completed, the first hydraulic cylinder 102 controls the reset of the top structure to re-dock the front and rear docking slide rails 210. Then, the telescopic cylinder 401 is used to control the mounting frame 402 to descend, so that the pneumatic suction nozzles 403 adsorb on the top of the vehicle body for fixation. Subsequently, the linear motion module 301 drives the vehicle body to move and moves the vehicle body to the next docking slide rail 210 for the next vehicle body processing operation.

[0041] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent automobile body assembly welding production line, characterized in that, Including: A support mechanism (1) capable of supporting the vehicle body, moving it up and down, and swinging it left and right or front and back; A positioning mechanism (2) for rotating and adjusting the position of the vehicle body; A manipulator control mechanism (3) for positioning and controlling the welding structure of the vehicle body; A transfer mechanism (4) for transferring the completed vehicle body; The support mechanism (1) includes a base (101). In the middle of the top end of the base (101), a first hydraulic cylinder (102) is installed. The end of the piston rod of the first hydraulic cylinder (102) is installed on a connecting block (104) on the upper side of the front end of a fixing plate (103). A second hydraulic cylinder (105) is installed at the rear end of the fixing plate (103). The driving end of the second hydraulic cylinder (105) is installed with a mounting plate (106). The top end of the mounting plate (106) is installed in the middle of the bottom end of a square platform (111). Electric cylinders (112) are installed at the four corners of the top end of the square platform (111) through universal shaft seats; The positioning mechanism (2) includes a fixed platform (201). The ends of the electric cylinders (112) are respectively movably connected to the four corners of the bottom end of the fixed platform (201). A cavity (202) is provided in the middle of the fixed platform (201). A movable platform (203) is movably connected to the top of the cavity (202). Docking slide rails (210) are installed on both sides of the top end of the movable platform (203) through fixing frames; A internal gear (204) is fixedly connected to the bottom end of the movable platform (203). A servo motor (205) is installed in the middle of the bottom wall of the cavity (202). The driving end of the servo motor (205) is fixedly connected to a driving bevel gear (206). A movable shaft (207) is movably connected to one side of the bottom wall of the cavity (202). An external gear (208) is fixedly connected to the outer diameter on the upper side of the movable shaft (207). One side of the external gear (208) is meshed and connected to the top of the driving bevel gear (206). A transmission gear (209) is installed at the top end of the movable shaft (207). One side of the transmission gear (209) is meshed and connected to the inner side end of the internal gear (204); The manipulator control mechanism (3) includes two linear motion modules (301). The linear motion modules (301) are respectively installed on both sides of the base (101). Sliders (302) are provided in the middle of the linear motion modules (301). The top ends of the sliders (302) are respectively fixedly connected to both sides of the bottom end of an arched bridge (303); On both sides of the upper part of the arched bridge frame (303), arc-shaped grooves (304) are provided inside the bending sections, and the inner ends and the front ends of the arc-shaped grooves (304) are both communicated with the outside. Arc-shaped guide rods (305) are fixedly connected inside the arc-shaped grooves (304). Moving blocks (306) are movably connected to the middle parts of the arc-shaped guide rods (305). Welding manipulators (307) are installed at the inner ends of the moving blocks (306). The front ends of the tops of the sliders (302) are movably connected to one ends of the third hydraulic cylinders (308), and the other ends of the third hydraulic cylinders (308) are movably connected to the front fixing frames of the moving blocks (306). On both sides of the top of the support mechanism (1) near the first hydraulic cylinder (102), first guide rails (107) are provided. First guide rods (108) are fixedly connected to both sides of the front end of the fixing plate (103), and the first guide rods (108) are movably connected inside the first guide rails (107) on the corresponding sides. Second guide rails (109) are fixedly connected to both sides of the rear end of the fixing plate (103). Second guide rods (110) are fixedly connected to both sides of the bottom end of the mounting plate (106), and the second guide rods (110) are movably connected inside the second guide rails (109) on the corresponding sides.

2. The intelligent automobile body assembly welding production line according to claim 1, characterized in that Spring rods (211) are movably connected to the four corners of the top of the base (101), and the ends of the spring rods (211) are movably connected to the four corners of the bottom end of the fixed table (201) respectively.

3. An intelligent automobile body assembly welding production line according to claim 1, characterized in that, The transfer mechanism (4) includes a telescopic air cylinder (401). The telescopic air cylinder (401) is installed in the middle of the top of the arched bridge frame (303). The driving end of the telescopic air cylinder (401) penetrates through the top of the arched bridge frame (303) and is fixedly connected to the middle of the top end of the mounting frame (402). A plurality of pneumatic suction nozzles (403) are evenly installed at the bottom end of the mounting frame (402).

Images