A multi-station automobile engine hood welding workstation

Abstract

The present invention discloses a multi-station welding workstation for automobile engine hoods, including a bottom plate, a base, and a welding robot disposed on the top surface of the base. L-shaped plates are provided on both sides of the top surface of the bottom plate, and fixing rods are rotatably provided on the opposite sides of the two L-shaped plates. The present invention relates to the technical field of automobile engine hood production. For this multi-station welding workstation for automobile engine hoods, each anti-slip wheel is pre-contacted with the edge surface of the engine hood for limiting, and the position of the anti-slip wheel can be adjusted adaptively under the action of the buffer spring, so that the anti-slip wheel is always in contact with the arc surface of the engine hood. Then, the engine hood is clamped and fixed by the clamping of the upper and lower clamping plates, and the clamping position of the clamping plate can be adjusted, without the need to frequently disassemble and assemble the engine hood to meet the requirement of welding at different positions. Moreover, this device can be applicable to clamping engine hoods of different sizes within a certain range, expanding the applicable range of this device.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile hood production, and specifically provides a multi-station automobile hood welding workstation. Background Technique

[0002] The hood is made of rubber foam and aluminum foil materials. When reducing engine noise, it can simultaneously isolate the heat generated during engine operation, effectively protecting the paint on the surface of the hood and preventing aging.

[0003] Automobiles have currently become the main means of transportation. During the manufacturing process of automobiles, it is necessary to weld the hood. According to the patent with the patent application number CN202123045798.6, four L-shaped rotating blocks can respectively rotate along the hinge grooves of the upper frame, and then the fastening screw rod moving pressure block moves, and then the four corners of the hood can be clamped and fixed. The first motor drives the first gear and the second gear to rotate, and drives the connecting plate and the upper frame to rotate through the turntable, so as to adjust the angle of the fixedly installed hood; the second motor drives the first bevel gear and the second bevel gear to rotate, enabling the rotating shaft to drive the convex rotating seat and the third motor to rotate together. At the same time, the third motor drives the first swing arm to rotate, and the cylinder drives the welding equipment to rotate between the second swing arms, thus realizing complex welding work at multiple angles and multiple positions;

[0004] In the above patent, the four corners of the hood are clamped and fixed by driving the pressure block to move. The fitting surface of the pressure block is a relatively vertical plane. However, since most of the edges of the hood are irregular arc surfaces, when the pressure block contacts the surface of the hood, it cannot completely fit the surface of the hood, and there are many gaps. Therefore, the hood is prone to shaking after being clamped, affecting the subsequent welding accuracy. And when some hoods need to be welded around the clamping position, to avoid the influence caused by the clamping structure blocking, it is necessary for personnel to frequently adjust the clamping position on the hood, which is very inconvenient and increases unnecessary labor. Therefore, in view of the above deficiencies, the present invention makes the following improvements. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a multi-station automobile hood welding workstation, which solves the problems mentioned in the background technique.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: A multi-station automobile engine hood welding workstation, including a bottom plate, a base, and a welding robot disposed on the top surface of the base. On both sides of the top surface of the bottom plate, there are L-shaped plates provided. And on the opposite sides of the two L-shaped plates, there are fixing rods rotatably arranged. One end of the fixing rod is provided with a fixing block. On the front and back of the fixing block, there are U-shaped frames provided through X-shaped telescopic frames. And inside the U-shaped frame, there is a movable frame rotatably arranged. On the surface of the movable frame, there is a clamping mechanism;

[0007] The clamping mechanism includes a U-shaped block slidably arranged inside the movable frame. And between the top and bottom surfaces of the inner wall of the U-shaped block, there is an anti-slip wheel rotatably arranged through a vertical rod. Inside the U-shaped block, there is a double-rod hydraulic cylinder rotatably arranged. And on the two extending ends of the double-rod hydraulic cylinder, there are clamping plates fixedly arranged. Inside the U-shaped block, there is a control part for driving the double-rod hydraulic cylinder to rotate. On both sides inside the movable frame, there are grooves adapted to the U-shaped block provided. And between one side of the inner wall of the groove and one side of the U-shaped block, there is a buffer spring fixedly connected.

[0008] Preferably, the control part includes a micro motor fixedly arranged on the inner wall of the U-shaped block. And on one end of the output shaft of the micro motor, there is a first gear fixedly connected through a coupling. On the surface of the double-rod hydraulic cylinder, there is a second gear fixedly arranged meshing with the first gear.

[0009] Preferably, on the surface of the fixing rod, there is an adjusting part for controlling the forward and backward movement of the U-shaped frame. The adjusting part includes a sliding ring slidably arranged on the surface of the fixing rod. And on the front and back of the sliding ring, there are pull rods rotatably arranged through movable shafts. One end of the two pull rods is rotatably connected to one side of the two U-shaped frames respectively through a connecting shaft.

[0010] Preferably, inside the L-shaped plate, there is an electric push rod fixedly arranged. And on the extending end of the electric push rod, there is a U-shaped limiting plate fixedly connected. On one side of the surface of the sliding ring, there is a collar. And the protrusion on the surface of the collar is located in the depression of the U-shaped limiting plate.

[0011] Preferably, on the surface of the fixing block, there is a rotating part for driving the movable frame to rotate. The rotating part includes a rotating rod rotatably arranged on the top surface of the fixing block. And there are two rotating rods. On the opposite sides of the two rotating rods, there are sleeves fixedly arranged. And inside the sleeve, there is a sliding rod slidably arranged. On the bottom end of the sliding rod, there is a limiting block rotatably arranged. And the bottom surface of the limiting block is slidably connected to the top surface of the movable frame.

[0012] Preferably, inside the fixing block, there is a first motor. And on one end of the output shaft of the first motor, there is a driving gear fixedly arranged through a short rod. On the top end of the rotating rod, there is a driven gear fixedly arranged meshing with the driving gear.

[0013] Preferably, X-axis electric sliding rails are fixedly arranged on both sides of the bottom plate, and a Y-axis electric sliding rail is slidably arranged on the top surface of the X-axis electric sliding rail through a sliding block. An activity plate is slidably arranged on the top surface of the Y-axis electric sliding rail. Hydraulic cylinders are fixedly arranged on both sides of the top surface of the activity plate, and the extending ends of the hydraulic cylinders are fixedly connected to the bottom surface of the L-shaped plate.

[0014] The present invention provides a multi-station welding workstation for automobile engine hoods. It has the following beneficial effects:

[0015] (1) In this multi-station welding workstation for automobile engine hoods, each anti-slip wheel is pre-contacted with the edge surface of the engine hood for limiting, and the position of the anti-slip wheel can be adjusted adaptively under the action of the buffer spring, so that the anti-slip wheel always contacts the arc surface of the engine hood. Then, the engine hood is clamped and fixed by the clamping of the upper and lower clamping plates, and the clamping position of the clamping plate can be adjusted. There is no need to frequently disassemble and assemble the engine hood to meet the welding requirements at different positions. And this device can be applicable to clamping engine hoods of different sizes within a certain range, expanding the applicable range of this device.

[0016] (2) In this multi-station welding workstation for automobile engine hoods, under the condition that the engine hood is clamped stably, by controlling the second motor to drive the fixed rod to rotate, the engine hood can be flipped, which is convenient for welding the bottom surface of the engine hood, greatly improving the welding efficiency. There is no need for manual loading, unloading and flipping by personnel, reducing the labor force.

[0017] (3) In this multi-station welding workstation for automobile engine hoods, through the settings of the X-axis electric sliding rail, Y-axis electric sliding rail and hydraulic cylinder, the height and front-back position of the clamped engine hood can be adjusted to meet the welding requirements of different parts, realizing multi-station welding operations. Description of the Drawings

[0018] Figure 1 is a three-dimensional view of the structure of the present invention;

[0019] Figure 2 is a top view of the internal structure of the activity frame of the present invention;

[0020] Figure 3 is a schematic structural diagram of the first motor of the present invention;

[0021] Figure 4 is the present invention Figure 1 is a partial enlarged view of part A in;

[0022] Figure 5 is the present invention Figure 1 is a partial enlarged view of part B in;

[0023] Figure 6 is the present inventionFigure 1 Partial enlarged view at position C in the middle.

[0024] In the figure: 1, bottom plate; 2, welding robot; 3, L-shaped plate; 4, fixing rod; 5, clamping mechanism; 51, anti-slip wheel; 52, U-shaped block; 53, double-rod hydraulic cylinder; 54, clamping plate; 55, buffer spring; 56, micro motor; 57, first gear; 58, second gear; 6, adjusting member; 61, sliding ring; 62, pull rod; 63, electric push rod; 64, U-shaped limiting plate; 65, collar; 7, rotating member; 71, rotating rod; 72, sliding rod; 73, sleeve; 74, limiting block; 75, first motor; 76, driving gear; 77, driven gear; 8, fixing block; 9, X-shaped telescopic frame; 10, U-shaped frame; 11, movable frame; 12, X-axis electric slide rail; 13, Y-axis electric slide rail; 14, hydraulic cylinder; 15, second motor. Specific implementation manner

[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 1

[0027] Please refer to Figures 1 to 6 As shown, the present invention provides a technical solution, and the specific improvements are as follows:

[0028] A multi-station automobile engine hood welding workstation includes a bottom plate 1, a base, and a welding robot 2 disposed on the top surface of the base. Both sides of the top surface of the bottom plate 1 are provided with L-shaped plates 3, and fixing rods 4 are rotatably disposed on the opposite sides of the two L-shaped plates 3. One end of the fixing rod 4 is provided with a fixing block 8. One side of the inner wall of the L-shaped plate 3 is fixedly provided with a second motor 15, and one end of the output shaft of the second motor 15 is fixedly connected to the other end of the fixing rod 4 through a coupling. The front and back surfaces of the fixing block 8 are both provided with a U-shaped frame 10 through an X-shaped telescopic frame 9, and a movable frame 11 is rotatably disposed inside the U-shaped frame 10. The X-shaped telescopic frame 9 can be stretched and contracted, and the surface of the movable frame 11 is provided with a clamping mechanism 5;

[0029] The clamping mechanism 5 includes a U-shaped block 52 slidably disposed inside the movable frame 11. A non-slip wheel 51 is rotatably disposed between the top and bottom surfaces of the inner wall of the U-shaped block 52 through a vertical rod. A double-rod hydraulic cylinder 53 is rotatably disposed inside the U-shaped block 52, and clamping plates 54 are fixedly disposed at both extending ends of the double-rod hydraulic cylinder 53. Clamping pads are disposed on the opposite sides of the upper and lower clamping plates 54. A control part for driving the double-rod hydraulic cylinder 53 to rotate is disposed inside the U-shaped block 52. The control part includes a micro motor 56 fixedly disposed on the inner wall of the U-shaped block 52. One end of the output shaft of the micro motor 56 is fixedly connected with a first gear 57 through a coupling. A second gear 58 meshing with the first gear 57 is fixedly disposed on the surface of the double-rod hydraulic cylinder 53. Grooves adapted to the U-shaped block 52 are formed on both sides inside the movable frame 11, and a buffer spring 55 is fixedly connected between one side of the inner wall of the groove and one side of the U-shaped block 52;

[0030] An adjusting member 6 for controlling the front-back movement of the U-shaped frame 10 is disposed on the surface of the fixed rod 4. The adjusting member 6 includes a sliding ring 61 slidably disposed on the surface of the fixed rod 4. Pulling rods 62 are rotatably disposed on the front and back surfaces of the sliding ring 61 through movable shafts. A convex block is disposed on the inner wall of the sliding ring 61. A sliding groove adapted to the convex block is formed on the surface of the fixed rod 4. The convex block is slidably disposed inside the sliding groove. One ends of the two pulling rods 62 are respectively rotatably connected with one side of the two U-shaped frames 10 through a connecting shaft. An electric push rod 63 is fixedly disposed inside the L-shaped plate 3, and the extending end of the electric push rod 63 is fixedly connected with a U-shaped limiting plate 64. A collar 65 is disposed on one side of the surface of the sliding ring 61, and the protruding part on the surface of the collar 65 is located in the recessed part of the U-shaped limiting plate 64;

[0031] A rotating member 7 for driving the movable frame 11 to rotate is disposed on the surface of the fixed block 8. The rotating member 7 includes a rotating rod 71 rotatably disposed on the top surface of the fixed block 8, and there are two rotating rods 71. Sleeve rods 73 are fixedly disposed on the opposite sides of the two rotating rods 71. A sliding rod 72 is slidably disposed inside the sleeve rod 73. The bottom end of the sliding rod 72 is rotatably connected with a limiting block 74, and the bottom surface of the limiting block 74 is slidably connected with the top surface of the movable frame 11. A first motor 75 is disposed inside the fixed block 8, and a driving gear 76 is fixedly disposed at one end of the output shaft of the first motor 75 through a short rod. A driven gear 77 meshing with the driving gear 76 is fixedly disposed at the top end of the rotating rod 71;

[0032] Adjust the distance between the front and rear movable frames 11 in advance according to the width of the engine hood, that is, start the electric push rod 63, so that the extending end of the electric push rod 63 drives the collar 65 to move through the U-shaped limit plate 64. At this time, the sliding ring 61 on one side of the collar 65 moves synchronously along the surface of the fixed rod 4. During the movement of the sliding ring 61, due to the rotational setting of the pull rod 62, one end of the two pull rods 62 on the sliding ring 61 can be relatively close to or far from each other, and then the front and rear U-shaped frames 10 move relatively close to or far from each other synchronously. At this time, the X-shaped telescopic frame 9 contracts or extends synchronously, so as to adjust the distance between the front and rear movable frames 11 and preliminarily determine the clamping position of the engine hood;

[0033] Place the engine hood between the two fixed blocks 8, start the first motor 75, so that the first motor 75 drives the short rod to rotate, and the driving gear 76 at the top of the short rod rotates synchronously. Therefore, the two driven gears 77 can be driven to rotate, and the rotating rod 71 drives the sleeve 73 and the sliding rod 72 to rotate synchronously. With the rotational setting of the sliding rod 72 and the limit block 74 and the sliding setting of the limit block 74 on the movable frame 11, the movable frame 11 can change the angle along the inside of the U-shaped frame 10, which is convenient for the subsequent clamping plate 54 to be more suitable for clamping the engine hood;

[0034] Then control the two L-shaped plates 3 to approach each other until the surface of the anti-slip wheel 51 contacts the edge surface of the engine hood. During the contact limit process, since the edge surface of the engine hood is an irregular arc surface, when the anti-slip wheel 51 contacts the edge of the engine hood, it can cooperate with the elastic setting of the buffer spring 55, so that the anti-slip wheel 51 can be adjusted adaptively, so that the anti-slip wheel 51 fits the surface of the engine hood and improves the clamping force;

[0035] At the same time, start the double-rod hydraulic cylinder 53, so that the two extending ends of the double-rod hydraulic cylinder 53 drive the two clamping plates 54 to approach each other relatively until the clamping pads are clamped and fixed on the surface of the engine hood. When clamping is not required, control the two clamping plates 54 to move away from each other;

[0036] By starting the micro motor 56, the micro motor 56 drives the double-rod hydraulic cylinder 53 to rotate through the first gear 57 and the second gear 58, and the clamping plate 54 rotates synchronously. By controlling the angle of the clamping plate 54 to change, the fine adjustment of the clamping position of the engine hood is realized to meet the requirements of different welding operations;

[0037] Start the first motor 75, which can drive the fixed rod 4 to rotate. Due to the setting of the convex block inside the sliding ring 61, the sliding ring 61 and the fixed block 8 can be driven to rotate synchronously, so as to realize the flipping of the engine hood and facilitate the welding operation on the bottom surface of the engine hood.

[0038] Embodiment 2

[0039] Based on the first embodiment, please refer to Figure 1 as shown, and the specific improvements are as follows:

[0040] On both sides of the bottom plate 1, X-axis electric slide rails 12 are fixedly arranged, and on the top surface of the X-axis electric slide rails 12, a Y-axis electric slide rail 13 is slidably arranged through a sliding block. On the top surface of the Y-axis electric slide rail 13, a movable plate is slidably arranged. On both sides of the top surface of the movable plate, hydraulic cylinders 14 are fixedly arranged, and the extending ends of the hydraulic cylinders 14 are fixedly connected to the bottom surface of the L-shaped plate 3;

[0041] Starting the X-axis electric slide rail 12 can cause the Y-axis electric slide rail 13 to slide back and forth along its top surface. Starting the Y-axis electric slide rail 13 causes the movable plate on the top surface of the Y-axis electric slide rail 13 to slide left and right. And starting the hydraulic cylinder 14 can cause the extending end of the hydraulic cylinder 14 to drive the L-shaped plate 3 to lift, so as to realize the position and height adjustment of the L-shaped plate 3. Furthermore, the clamping mechanism 5 drives the engine hood to adjust its position and height, enabling the engine hood to meet the welding operations of multiple workstations, and improving the welding quality and efficiency.

[0042] At the same time, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0043] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-station welding workstation for automobile engine hoods, comprising a bottom plate (1), a base, and a welding robot (2) arranged on the top surface of the base, characterized in that: On both sides of the top surface of the bottom plate (1), L-shaped plates (3) are provided, and on the opposite sides of the two L-shaped plates (3), fixing rods (4) are rotatably provided. One end of the fixing rod (4) is provided with a fixing block (8). On the front and back of the fixing block (8), U-shaped frames (10) are provided through X-shaped telescopic frames (9), and an activity frame (11) is rotatably provided inside the U-shaped frame (10). A clamping mechanism (5) is provided on the surface of the activity frame (11). The clamping mechanism (5) includes a U-shaped block (52) slidably arranged inside the activity frame (11). Between the top and bottom surfaces of the inner wall of the U-shaped block (52), an anti-slip wheel (51) is rotatably arranged through a vertical rod. A double-rod hydraulic cylinder (53) is rotatably arranged inside the U-shaped block (52), and clamping plates (54) are fixedly arranged at the two extending ends of the double-rod hydraulic cylinder (53). A control part for driving the double-rod hydraulic cylinder (53) to rotate is arranged inside the U-shaped block (52). On both sides inside the activity frame (11), grooves adapted to the U-shaped block (52) are provided, and a buffer spring (55) is fixedly connected between one side of the inner wall of the groove and one side of the U-shaped block (52). An adjusting part (6) for controlling the front-back movement of the U-shaped frame (10) is arranged on the surface of the fixing rod (4). The adjusting part (6) includes a sliding ring (61) slidably arranged on the surface of the fixing rod (4). On the front and back of the sliding ring (61), pull rods (62) are rotatably arranged through movable shafts. One ends of the two pull rods (62) are respectively rotatably connected to one side of the two U-shaped frames (10) through connecting shafts. An electric push rod (63) is fixedly arranged inside the L-shaped plate (3), and the extending end of the electric push rod (63) is fixedly connected with a U-shaped limiting plate (64). A collar (65) is arranged on one side of the surface of the sliding ring (61), and the protruding part on the surface of the collar (65) is located in the recessed part of the U-shaped limiting plate (64). A rotating part (7) for driving the activity frame (11) to rotate is arranged on the surface of the fixing block (8). The rotating part (7) includes a rotating rod (71) rotatably arranged on the top surface of the fixing block (8), and there are two rotating rods (71). On the opposite sides of the two rotating rods (71), sleeves (73) are fixedly arranged, and a sliding rod (72) is slidably arranged inside the sleeve (73). The bottom end of the sliding rod (72) is rotatably provided with a limiting block (74), and the bottom surface of the limiting block (74) is slidably connected to the top surface of the activity frame (11).

2. A multi-station automobile engine hood welding workstation according to claim 1, characterized in that: The control part includes a micro motor (56) fixedly arranged on the inner wall of the U-shaped block (52). One end of the output shaft of the micro motor (56) is fixedly connected with a first gear (57) through a coupling. A second gear (58) meshing with the first gear (57) is fixedly arranged on the surface of the double-rod hydraulic cylinder (53).

3. A multi-station automobile engine hood welding workstation according to claim 1, characterized in that: A first motor (75) is arranged inside the fixed block (8), and one end of the output shaft of the first motor (75) is fixedly provided with a driving gear (76) through a short rod. A driven gear (77) meshing with the driving gear (76) is fixedly arranged at the top end of the rotating rod (71).

4. A multi-station automobile engine hood welding workstation according to claim 1, characterized in that: X-axis electric sliding rails (12) are fixedly arranged on both sides of the bottom plate (1), and a Y-axis electric sliding rail (13) is slidably arranged on the top surface of the X-axis electric sliding rail (12) through a sliding block. A movable plate is slidably arranged on the top surface of the Y-axis electric sliding rail (13), and hydraulic cylinders (14) are fixedly arranged on both sides of the top surface of the movable plate. The extending ends of the hydraulic cylinders (14) are fixedly connected to the bottom surface of the L-shaped plate (3).

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