Multi-station automobile engine hood welding workstation

Abstract

The invention discloses a multi-station automobile engine hood welding workstation which comprises a bottom plate, a base and a welding robot arranged on the top face of the base, L-shaped plates are arranged on the two sides of the top face of the bottom plate correspondingly, and fixing rods are rotationally arranged on the opposite sides of the two L-shaped plates correspondingly. According to the multi-station automobile engine hood welding workstation, all the anti-skid wheels make contact with the edge face of an engine hood in advance and are limited, and the positions of the anti-skid wheels can be adjusted in a self-adaptive mode under the action of buffer springs, so that the anti-skid wheels make contact with the arc face of the engine hood all the time; the engine hood is clamped and fixed through clamping of the upper clamping plate and the lower clamping plate, the clamping positions of the clamping plates can be adjusted, the engine hood does not need to be disassembled and assembled frequently, the requirement for welding at different positions is met, the device can be suitable for clamping engine hoods of different sizes within a certain range, and the welding efficiency is improved. And the application range of the device is expanded.

Description

Technical Field

[0001] The invention relates to the technical field of automobile engine hood production, in particular to a multi-station automobile engine hood welding workstation. Background Art

[0002] The hood is made of rubber foam and aluminum foil. While reducing engine noise, it can also isolate the heat generated by the engine at work, effectively protecting the paint on the surface of the hood and preventing aging.

[0003] Cars have now become the main means of transportation. In the process of manufacturing cars, the hood needs to be welded. According to the patent application number CN202123045798.6, the four L-shaped rotating blocks can rotate along the hinge groove of the upper frame respectively, and then the fastening screw dynamic pressure block moves, and then the four corners of the fixed hood can be clamped. 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 that the angle of the fixed hood can be adjusted; the second motor drives the first bevel gear and the second bevel gear to rotate, which can make the rotating shaft drive the convex rotating seat and the third motor to rotate together, and at the same time the third motor drives the first rocker arm to rotate, and the cylinder drives the welding equipment to rotate along the second rocker arm, thereby realizing complex welding work at multiple angles and positions; 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. 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 on the surface of the hood. There are many gaps, which can easily cause the hood to shake after clamping, affecting the subsequent welding accuracy. In addition, when part of the hood needs to be welded around the clamping position, in order to avoid the influence caused by the obstruction of the clamping structure, personnel are required to frequently adjust the clamping position on the hood, which is very inconvenient and increases unnecessary labor. Therefore, in view of the above shortcomings, the present invention makes the following improvements. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a multi-station automobile hood welding workstation, which solves the problems mentioned in the background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a multi-station automobile hood welding workstation, comprising a bottom plate, a base and a welding robot arranged on the top surface of the base, L-shaped plates are arranged on both sides of the top surface of the bottom plate, and two L-shaped plates are rotatably arranged on opposite sides thereof, a fixing rod is arranged at one end of the fixing rod, a fixing block is arranged at the front and back of the fixing block through an X-shaped telescopic frame, and a movable frame is rotatably arranged inside the U-shaped frame, and a clamping mechanism is arranged on the surface of the movable frame; The clamping mechanism includes a U-shaped block slidably arranged inside the movable frame, and an anti-skid wheel is rotatably arranged between the top and bottom surfaces of the inner wall of the U-shaped block through a vertical rod, a double-rod hydraulic cylinder is rotatably arranged inside the U-shaped block, and clamping plates are fixedly arranged at both protruding ends of the double-rod hydraulic cylinder, a control part for driving the double-rod hydraulic cylinder to rotate is arranged inside the U-shaped block, grooves matching the U-shaped block are opened on both sides of the interior of the movable frame, and a buffer spring is fixedly connected between one side of the inner wall of the groove and one side of the U-shaped block.

[0006] Preferably, the control unit includes a micro motor fixedly arranged on the inner wall of the U-shaped block, and one end of the micro motor output shaft is fixedly connected to a first gear through a coupling, and a second gear meshing with the first gear is fixedly arranged on the surface of the double-rod hydraulic cylinder.

[0007] Preferably, the surface of the fixed rod is provided with an adjusting member for controlling the forward and backward movement of the U-shaped frame, and the adjusting member includes a sliding ring slidably arranged on the surface of the fixed rod, and the front and back sides of the sliding ring are provided with pull rods rotatably arranged through a movable shaft, and one end of the two pull rods are rotatably connected to one side of the two U-shaped frames through a connecting shaft.

[0008] Preferably, an electric push rod is fixedly arranged inside the L-shaped plate, and the protruding end of the electric push rod is fixedly connected to a U-shaped limiting plate, a collar is arranged on one side of the sliding ring surface, and the protrusion of the collar surface is located at the depression of the U-shaped limiting plate.

[0009] Preferably, a rotating part for driving the movable frame to rotate is provided on the surface of the fixed block, and the rotating part includes a rotating rod rotatably arranged on the top surface of the fixed block, and two rotating rods are provided, sleeves are fixedly provided on the opposite sides of the two rotating rods, and a sliding rod is slidably provided inside the sleeve, a limit block is rotatably provided at the bottom end of the sliding rod, and the bottom surface of the limit block is slidably connected to the top surface of the movable frame.

[0010] Preferably, a first motor is arranged inside the fixed block, and a driving gear is fixedly arranged at one end of the output shaft of the first motor via a short rod, and a passive gear meshing with the driving gear is fixedly arranged at the top end of the rotating rod.

[0011] Preferably, X-axis electric slide rails are fixedly provided on both sides of the base plate, and a Y-axis electric slide rail is slidably provided on the top surface of the X-axis electric slide rail through a sliding block, a movable plate is slidably provided on the top surface of the Y-axis electric slide rail, and hydraulic cylinders are fixedly provided on both sides of the top surface of the movable plate, and the protruding ends of the hydraulic cylinders are fixedly connected to the bottom surface of the L-shaped plate.

[0012] The present invention provides a multi-station automobile hood welding workstation, which has the following beneficial effects: (1) In the multi-station automobile hood welding workstation, each anti-skid wheel is pre-contacted with the edge surface of the hood and limited, and the position of the anti-skid wheel can be adaptively adjusted under the action of the buffer spring, so that the anti-skid wheel is always in contact with the curved surface of the hood, and then the hood is clamped and fixed by clamping the upper and lower clamping plates, and the clamping position of the clamping plate can be adjusted, so there is no need to frequently disassemble and assemble the hood to meet the needs of welding at different positions, and the device can be used to clamp hoods of different sizes within a certain range, thereby expanding the scope of application of the device.

[0013] (2) This multi-station automobile hood welding workstation, under the condition that the hood is stably clamped, can realize the flipping operation of the hood by controlling the second motor to drive the fixed rod to rotate, which is convenient for welding the bottom surface of the hood, greatly improving the welding efficiency, eliminating the need for manual loading and unloading and flipping, and reducing labor.

[0014] (3) The multi-station automobile hood welding workstation can adjust the height and front and rear position of the clamped rear hood through the setting of the X-axis electric slide rail, the Y-axis electric slide rail and the hydraulic cylinder to meet the welding requirements of different parts and realize multi-station welding operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of the structure of the present invention; Figure 2 A top view of the internal structure of the movable frame of the present invention; Figure 3 is a schematic structural diagram of a first motor of the present invention; Figure 4 For the present invention Figure 1 A partial enlarged view of the middle A; Figure 5 For the present invention Figure 1 A partial enlarged view of point B in the middle; Figure 6 For the present invention Figure 1 A partial enlarged view of point C in the middle.

[0016] In the figure: 1. bottom plate; 2. welding robot; 3. L-shaped plate; 4. fixing rod; 5. clamping mechanism; 51. anti-skid 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 limit plate; 65. collar; 7. rotating member; 71. rotating rod; 72. sliding rod; 73. sleeve; 74. limit block; 75. first motor; 76. driving gear; 77. passive 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. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Embodiment 1

[0019] See also Figures 1 to 6 As shown, the present invention provides a technical solution, and the specific improvements are as follows: A multi-station automobile hood welding workstation comprises a bottom plate 1, a base and a welding robot 2 arranged on the top surface of the base, L-shaped plates 3 are arranged on both sides of the top surface of the bottom plate 1, and the two opposite sides of the two L-shaped plates 3 are rotatably provided with fixed rods 4, one end of the fixed rod 4 is provided with a fixed block 8, a second motor 15 is fixedly provided on one side of the inner wall of the L-shaped plate 3, and one end of the output shaft of the second motor 15 is fixedly connected to the other end of the fixed rod 4 through a coupling, the front and back sides of the fixed block 8 are both provided with U-shaped frames 10 through X-shaped telescopic frames 9, and a movable frame 11 is rotatably provided inside the U-shaped frame 10, the X-shaped telescopic frame 9 can be stretched and contracted, and a clamping mechanism 5 is provided on the surface of the movable frame 11; The clamping mechanism 5 includes a U-shaped block 52 slidably arranged inside the movable frame 11, and an anti-skid wheel 51 is rotatably arranged 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 arranged inside the U-shaped block 52, and the two protruding ends of the double-rod hydraulic cylinder 53 are fixedly arranged with clamping plates 54, and the opposite sides of the upper and lower clamping plates 54 are respectively provided with clamping pads, and a control unit for driving the double-rod hydraulic cylinder 53 to rotate is arranged inside the U-shaped block 52, and the control unit includes a micro motor 56 fixedly arranged on the inner wall of the U-shaped block 52, and one end of the output shaft of the micro motor 56 is fixedly connected to a first gear 57 through a coupling, and a second gear 58 meshing with the first gear 57 is fixedly arranged on the surface of the double-rod hydraulic cylinder 53, and grooves matching the U-shaped block 52 are provided on both sides of the interior of 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; The surface of the fixed rod 4 is provided with an adjusting member 6 for controlling the forward and backward movement of the U-shaped frame 10, the adjusting member 6 includes a sliding ring 61 slidably arranged on the surface of the fixed rod 4, and the front and back sides of the sliding ring 61 are both provided with pull rods 62 rotatably arranged through a movable shaft, the inner wall of the sliding ring 61 is provided with a protrusion, the surface of the fixed rod 4 is provided with a slide groove adapted to the protrusion, the protrusion is slidably arranged inside the slide groove, one end of the two pull rods 62 is rotatably connected to one side of the two U-shaped frames 10 through a connecting shaft, an electric push rod 63 is fixedly arranged inside the L-shaped plate 3, and the protruding 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 protrusion on the surface of the collar 65 is located at the recess of the U-shaped limiting plate 64; The surface of the fixed block 8 is provided with a rotating member 7 for driving the movable frame 11 to rotate, and the rotating member 7 includes a rotating rod 71 rotatably arranged on the top surface of the fixed block 8, and two rotating rods 71 ​​are provided, and sleeves 73 are fixedly arranged on the opposite sides of the two rotating rods 71, and a sliding rod 72 is slidably arranged inside the sleeve 73, and a limit block 74 is rotatably arranged at the bottom end of the sliding rod 72, and the bottom surface of the limit block 74 is slidably connected to the top surface of the movable frame 11, a first motor 75 is arranged inside the fixed block 8, and a driving gear 76 is fixedly arranged at one end of the output shaft of the first motor 75 through a short rod, and a passive gear 77 meshing with the driving gear 76 is fixedly arranged on the top of the rotating rod 71; The distance between the front and rear movable frames 11 is adjusted in advance according to the width of the hood, that is, the electric push rod 63 is started, so that the extended end of the electric push rod 63 drives the collar 65 to move through the U-shaped limit plate 64, and 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 rotation 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 away from each other, and then the front and rear U-shaped frames 10 are relatively close to or away from each other synchronously, and the X-shaped telescopic frame 9 is synchronously contracted or extended, so that the distance between the front and rear movable frames 11 can be adjusted, and the clamping position of the hood can be preliminarily determined; The hood is placed between the two fixed blocks 8, and the first motor 75 is started, so that the first motor 75 drives the short rod to rotate, and the active gear 76 at the top of the short rod rotates synchronously, thereby driving the two passive gears 77 to rotate, and the rotating rod 71 drives the sleeve 73 and the sliding rod 72 to rotate synchronously, and the rotation 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 can make the movable frame 11 change its angle along the inside of the U-shaped frame 10, so that the subsequent clamping plate 54 is more suitable for clamping the hood; Then, the two L-shaped plates 3 are controlled to approach each other until the surface of the anti-skid wheel 51 contacts the edge surface of the hood. In the process of contact limiting, since the edge surface of the hood is an irregular arc surface, when the anti-skid wheel 51 contacts the edge of the hood, the elastic setting of the buffer spring 55 can be coordinated so that the anti-skid wheel 51 can be adaptively adjusted, so that the anti-skid wheel 51 and the surface of the hood fit each other, thereby improving the clamping force. At the same time, the double-rod hydraulic cylinder 53 is started, so that the two protruding ends of the double-rod hydraulic cylinder 53 respectively drive the two clamping plates 54 to move relatively close, until the clamping pad is clamped and fixed on the surface of the engine cover. When clamping is not needed, the two clamping plates 54 can be controlled to move away from each other. 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 clamping position of the hood can be fine-tuned to meet different welding operation requirements; Starting the first motor 75 can drive the fixing rod 4 to rotate. Due to the setting of the internal protrusion of the sliding ring 61, the sliding ring 61 and the fixing block 8 can be driven to rotate synchronously, so that the hood can be flipped, which is convenient for welding the bottom surface of the hood.

[0020] Embodiment 2

[0021] Based on Example 1, please refer to Figure 1 The specific improvements are as follows: X-axis electric slide rails 12 are fixedly arranged on both sides of the bottom plate 1, and a Y-axis electric slide rail 13 is slidably arranged on the top surface of the X-axis electric slide rail 12 through a sliding block, and a movable plate is slidably arranged on the top surface of the Y-axis electric slide rail 13, and hydraulic cylinders 14 are fixedly arranged on both sides of the top surface of the movable plate, and the protruding end of the hydraulic cylinder 14 is fixedly connected to the bottom surface of the L-shaped plate 3; Starting the X-axis electric slide 12 can make the Y-axis electric slide 13 slide back and forth along its top surface, starting the Y-axis electric slide 13 can make the movable plate on the top surface of the Y-axis electric slide 13 slide left and right, and starting the hydraulic cylinder 14 can make the extended end of the hydraulic cylinder 14 drive the L-shaped plate 3 to rise and fall, thereby realizing the position and height adjustment of the L-shaped plate 3, and then drive the engine hood to adjust its position and height through the clamping mechanism 5, so that the engine hood can meet the welding operation of multiple stations, thereby improving the welding quality and efficiency.

[0022] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-station automobile hood welding workstation, comprising a base plate (1), a base, and a welding robot (2) arranged on the top surface of the base, characterized in that: L-shaped plates (3) are provided on both sides of the top surface of the bottom plate (1), and fixed rods (4) are rotatably provided on opposite sides of the two L-shaped plates (3), a fixed block (8) is provided at one end of the fixed rod (4), a U-shaped frame (10) is provided on the front and back sides of the fixed block (8) via an X-shaped telescopic frame (9), and a movable frame (11) is rotatably provided inside the U-shaped frame (10), and a clamping mechanism (5) is provided on the surface of the movable frame (11); The clamping mechanism (5) comprises a U-shaped block (52) slidably arranged inside the movable frame (11), and an anti-slip wheel (51) is rotatably arranged between the top surface and the bottom surface of the inner wall of the U-shaped block (52) via 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 both protruding ends of the double-rod hydraulic cylinder (53), a control unit for driving the double-rod hydraulic cylinder (53) to rotate is arranged inside the U-shaped block (52), grooves matching the U-shaped block (52) are opened 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).

2. A multi-station automobile hood welding workstation according to claim 1, characterized in that: The control unit comprises 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 to a first gear (57) via a coupling, and a second gear (58) meshing with the first gear (57) is fixedly arranged on the surface of the double-rod hydraulic cylinder (53).

3. The multi-station automobile hood welding workstation according to claim 1, characterized in that: The surface of the fixed rod (4) is provided with an adjusting member (6) for controlling the forward and backward movement of the U-shaped frame (10), the adjusting member (6) comprising a sliding ring (61) slidably arranged on the surface of the fixed rod (4), and pull rods (62) are rotatably arranged on the front and back sides of the sliding ring (61) via a movable shaft, and one end of the two pull rods (62) are rotatably connected to one side of the two U-shaped frames (10) via a connecting shaft.

4. A multi-station automobile hood welding workstation according to claim 3, characterized in that: An electric push rod (63) is fixedly arranged inside the L-shaped plate (3), and the extended end of the electric push rod (63) is fixedly connected to a U-shaped limiting plate (64); a collar (65) is arranged on one side of the surface of the sliding ring (61), and a protrusion on the surface of the collar (65) is located at a recessed portion of the U-shaped limiting plate (64).

5. The multi-station automobile hood welding workstation according to claim 1, characterized in that: A rotating member (7) for driving the movable frame (11) to rotate is arranged on the surface of the fixed block (8), the rotating member (7) comprising a rotating rod (71) rotatably arranged on the top surface of the fixed block (8), and two rotating rods (71) are arranged, sleeves (73) are fixedly arranged on opposite sides of the two rotating rods (71), and a sliding rod (72) is slidably arranged inside the sleeve (73), and a limit block (74) is rotatably arranged at the bottom end of the sliding rod (72), and the bottom surface of the limit block (74) is slidably connected to the top surface of the movable frame (11).

6. A multi-station automobile hood welding workstation according to claim 5, characterized in that: 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) via a short rod, and a driven gear (77) meshing with the driving gear (76) is fixedly disposed at the top end of the rotating rod (71).

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

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