Automatic welding device for forklift overhead guard

Abstract

The utility model relates to the technical field of automatic welding, and discloses a forklift overhead guard automatic welding device which comprises a base, the bottom of the base is rotatably connected with a rotating disc, the top end of the base is fixedly connected with a first sliding rail, and the top end of the first sliding rail is slidably connected with a first movable plate. According to the automatic welding device for the forklift overhead guard, a telescopic rod is arranged, a second sliding block at the bottom of a second connecting plate is driven to move in the direction of a second sliding rail through stretching and retracting of the telescopic rod, and therefore the distance between the second connecting plate and a first movable plate is controlled; the second air cylinder works to push the third air cylinder to do linear motion, so that the third air cylinder is close to the workpiece for fine positioning, the workpiece is convenient to install, the workpiece installing and positioning precision is high, the automation degree of the device is high, the occupied space of the device is small, the production cost is reduced, and the universality is high. And workpieces of various specifications can be mounted and welded.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic welding, in particular to an automatic welding device for a forklift top guard. Background Art

[0002] Forklift overhead guard, also known as forklift roof, forklift protection frame, etc., is a structure installed above the forklift frame to provide additional protection and safety functions. Forklift overhead guard is usually made of solid metal materials such as steel or aluminum alloy. The structural design takes into account the maximum protection of the driver and usually includes a solid frame and covering.

[0003] Traditionally, manual welding is used for welding structural parts of forklift overhead guards. During the manual welding process, large welding deformation is caused, the quality of weld formation is relatively poor, and defects such as pores and welding slag are easily generated. The welding quality is unstable. The positioning accuracy of general tooling and clamping workpieces is not high, which cannot meet the high requirement of repeated positioning accuracy of robot automatic welding. The work efficiency is relatively low. The structural parts of forklift overhead guards have been machined and welded before, and due to the large deformation, they cannot meet the assembly requirements. In order to ensure the assembly quality, the original user designed multiple sets of special welding tools and multiple equipment, which have poor versatility and high labor intensity for workers. Multiple equipment occupy a large area. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide an automatic welding device for a forklift overhead guard, which can effectively solve the problems in the prior art of low positioning accuracy of workpiece clamping, failure to meet the requirements of high repeated positioning accuracy of robot automatic welding, poor versatility and large equipment footprint.

[0005] The technical solution adopted by the utility model is: an automatic welding device for a forklift overhead guard, comprising a base, the bottom of the base is rotatably connected to a turntable, the top of the base is fixedly connected to a slide rail, the top of the slide rail is slidably connected to a movable plate, the bottom end of the movable plate is fixedly connected to a slider, the top of the movable plate is fixedly connected to a connecting plate, the top of the connecting plate is fixedly connected to a clamping mechanism, the top of the base is fixedly connected to an anti-deformation structure, a telescopic rod is arranged inside the base, and the outer side of the base is fixedly connected to a slide rail. The end of the telescopic rod is fixedly connected to a connecting plate 2, the outer side of the connecting plate 2 is fixedly connected to a sliding block 2, the top of the connecting plate 2 is fixedly connected to a connecting seat, a cylinder 1 is arranged inside the connecting seat, the movable end of the cylinder 1 is fixedly connected to a mounting plate, the outer side of the mounting plate is fixedly connected to a cylinder 2, the inner side of the mounting plate is fixedly connected to a slide rail 3, the top of the slide rail 3 is slidably connected to a movable plate 2, the top of the movable plate 2 is fixedly connected to a cylinder 3, the outer side of the cylinder 3 is fixedly connected to a push-pull block, and the movable end of the cylinder 3 is fixedly connected to a guard plate.

[0006] Preferably, the slide block 1 is matched with the slide rail 1, and two identical clamping mechanisms are provided, the two clamping mechanisms are symmetrically distributed about the base, and the anti-deformation structure is located on the left side of the clamping mechanism.

[0007] Through the above technical solution, the slide rail 1 cooperates with the slider 1, so that the clamping mechanism on the movable plate 1 moves along the direction of the slide rail 1 to clamp workpieces of different specifications.

[0008] Preferably, one end of the telescopic rod is fixedly connected to the base, and the other end is fixedly connected to the second connecting plate, and the second sliding block is adapted to the second sliding rail.

[0009] Through the above technical solution, the telescopic rod is extended and retracted, driving the slider 2 at the bottom of the connecting plate 2 to move along the direction of the slide rail 2, thereby controlling the distance between the connecting plate 2 and the movable plate 1.

[0010] Preferably, two identical connecting seats, cylinder one and mounting plates are provided, and the two connecting seats, cylinder one and mounting plates are symmetrically distributed with respect to connecting plate two.

[0011] Through the above technical solution, the cylinder 1 works to push the mounting plate up and down, driving other components at the top of the cylinder 1 to move up and down.

[0012] Preferably, the cross section of the mounting plate is in an "H"-shaped structure, and two identical cylinders are provided, and the two cylinders are symmetrically distributed about the base.

[0013] Through the above technical solution, two groups of cylinder 2 are set to control the position of cylinder 3 on the mounting plate.

[0014] Preferably, the movable end of the second cylinder is fixedly connected to the push-pull block, and the second movable plate is adapted to the third slide rail.

[0015] Through the above technical solution, cylinder two works to push the push-pull block to move linearly, driving cylinder three to move, thereby driving movable plate two to move along the three directions of the slide rail to clamp workpieces of different specifications.

[0016] Preferably, the push-pull block is in a "concave"-shaped structure, and the cylinder three and the guard plate are symmetrically arranged with two identical ones.

[0017] Through the above technical solution, cylinder three pushes the guard plate to move linearly to clamp and position the workpiece, and two groups of cylinder three are set to improve the clamping effect of the workpiece.

[0018] Compared with the prior art, the utility model provides an automatic welding device for a forklift overhead guard, which has the following beneficial effects: the automatic welding device for a forklift overhead guard is provided with a telescopic rod, through which the telescopic rod is extended and retracted to drive the bottom slider 2 of the connecting plate 2 to move along the direction of the slide rail 2, thereby controlling the distance between the connecting plate 2 and the movable plate 1, and a height adjustment mechanism is provided. The cylinder 1 works to push the mounting plate up and down, driving other components at the top of the cylinder 1 to move up and down, and through the work of the cylinder 2, the cylinder 3 is pushed to make a linear motion, so that the cylinder 3 is close to the workpiece for precise positioning, the workpiece installation is relatively convenient, and the workpiece installation repeated positioning accuracy is high. The equipment has a high degree of automation, the site occupied by the equipment is greatly reduced, and the purpose of reducing production costs is achieved. It has high versatility and can install and weld workpieces of various specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0020] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the installation structure of the second slide rail of the utility model;

[0022] Figure 4 This is a schematic diagram of the installation structure of the cylinder of the utility model;

[0023] Figure 5 This is a schematic diagram of the three installation structures of the cylinder of the utility model.

[0024] Among them: 1. Base; 2. Turntable; 3. Slide rail 1; 4. Movable plate 1; 5. Slider 1; 6. Connecting plate 1; 7. Clamping mechanism; 8. Anti-deformation structure; 9. Telescopic rod; 10. Slide rail 2; 11. Connecting plate 2; 12. Slider 2; 13. Connecting seat; 14. Cylinder 1; 15. Mounting plate; 16. Cylinder 2; 17. Slide rail 3; 18. Movable plate 2; 19. Cylinder 3; 20. Push-pull block; 21. Guard plate. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1: Figure 1-5As shown, the utility model provides an automatic welding device for a forklift overhead guard, comprising a base 1, the bottom of the base 1 is rotatably connected to a turntable 2, the top of the base 1 is fixedly connected to a slide rail 3, the top of the slide rail 3 is slidably connected to a movable plate 4, the bottom end of the movable plate 4 is fixedly connected to a slider 5, the top of the movable plate 4 is fixedly connected to a connecting plate 6, the top of the connecting plate 6 is fixedly connected to a clamping mechanism 7, the top of the base 1 is fixedly connected to an anti-deformation structure 8, a telescopic rod 9 is arranged inside the base 1, a slide rail 10 is fixedly connected to the outside of the base 1, and the end of the telescopic rod 9 is fixedly connected to a connecting rod 11. Connecting plate 2 11, the outer side of connecting plate 2 11 is fixedly connected with slider 2 12, the top of connecting plate 2 11 is fixedly connected with connecting seat 13, the interior of connecting seat 13 is provided with cylinder 14, the movable end of cylinder 14 is fixedly connected with mounting plate 15, the outer side of mounting plate 15 is fixedly connected with cylinder 2 16, the inner side of mounting plate 15 is fixedly connected with slide rail 3 17, the top of slide rail 3 17 is slidably connected with movable plate 2 18, the top of movable plate 2 18 is fixedly connected with cylinder 3 19, the outer side of cylinder 3 19 is fixedly connected with push-pull block 20, the movable end of cylinder 3 19 is fixedly connected with guard plate 21.

[0027] Specifically, the slider 5 is adapted to the slide rail 3, and two identical clamping mechanisms 7 are provided. The two clamping mechanisms 7 are symmetrically distributed about the base 1, and the anti-deformation structure 8 is located on the left side of the clamping mechanism 7. The advantage is that the slide rail 3 cooperates with the slider 5 to make the clamping mechanism 7 on the movable plate 4 move along the direction of the slide rail 3 to clamp workpieces of different specifications.

[0028] Specifically, one end of the telescopic rod 9 is fixedly connected to the base 1, and the other end is fixedly connected to the connecting plate 11, and the slider 12 is adapted to the slide rail 10. The advantage is that the telescopic rod 9 is extended and retracted, driving the slider 12 at the bottom of the connecting plate 11 to move along the direction of the slide rail 10, thereby controlling the distance between the connecting plate 11 and the movable plate 4.

[0029] Specifically, two identical connecting seats 13, cylinder one 14 and mounting plates 15 are provided, and the two connecting seats 13, cylinder one 14 and mounting plates 15 are symmetrically distributed about connecting plate two 11. The advantage is that when cylinder one 14 works, it pushes the mounting plate 15 up and down, driving other components at the top of cylinder one 14 to move up and down.

[0030] Embodiment 2: Figure 2-5 As shown, as an improvement to the previous embodiment.

[0031] Specifically, the cross-section of the mounting plate 15 is an "H"-shaped structure, and two identical cylinders 16 are provided. The two cylinders 16 are symmetrically distributed about the base 1. The advantage is that two groups of cylinders 16 are provided to control the position of cylinder 3 19 on the mounting plate 15.

[0032] Specifically, the movable end of cylinder 2 16 is fixedly connected to the push-pull block 20, and the movable plate 2 18 is adapted to the slide rail 3 17. The advantage is that when cylinder 2 16 works, it pushes the push-pull block 20 to move linearly, driving cylinder 3 19 to move, thereby driving the movable plate 2 18 to move along the direction of slide rail 3 17 to clamp workpieces of different specifications.

[0033] Specifically, the push-pull block 20 is in a "concave" shape, and two identical cylinders 19 and guard plates 21 are symmetrically arranged. The advantage is that cylinder 3 19 pushes guard plate 21 to move linearly to clamp and position the workpiece, and two groups of cylinders 19 are arranged to improve the clamping effect of the workpiece.

[0034] Working principle: When in use, first adjust the position of the clamping mechanism 7 according to the workpiece model, and cooperate with the slide rail 3 and the slider 5 to make the movable plate 4 move along the direction of the slide rail 3, driving the clamping mechanism 7 to move, and then start the telescopic rod 9, the telescopic rod 9 is extended and retracted, driving the slider 2 12 at the bottom of the connecting plate 2 11 to move along the direction of the slide rail 2 10, thereby controlling the distance between the connecting plate 2 11 and the movable plate 4, and performing rough positioning, and then start the cylinder 14, the cylinder 14 works to push the mounting plate 15 to move, and drive other components at the top of the cylinder 14 to move up and down to the appropriate position, and then start the cylinder 2 16, the cylinder 2 16 works to push the push-pull block 20 to move in a straight line, and drive the cylinder 3 19 to move in a straight line, so that the cylinder 3 19 is close to the workpiece for precise positioning, and then start the cylinder 3 19 to push the guard plate 21 to position the workpiece. After the weld is fixed, the robot receives the information and performs welding according to the shape and size of the weld and the welding program pre-set by the robot.

[0035] 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. An automatic welding device for a forklift overhead guard, comprising a base (1), characterized in that: The bottom of the base (1) is rotatably connected to a turntable (2); the top of the base (1) is fixedly connected to a slide rail (3); the top of the slide rail (3) is slidably connected to a movable plate (4); the bottom of the movable plate (4) is fixedly connected to a slider (5); the top of the movable plate (4) is fixedly connected to a connecting plate (6); the top of the connecting plate (6) is fixedly connected to a clamping mechanism (7); the top of the base (1) is fixedly connected to an anti-deformation structure (8); a telescopic rod (9) is provided inside the base (1); the outer side of the base (1) is fixedly connected to a slide rail (10); the end of the telescopic rod (9) is fixedly connected to a connecting plate (11); the connecting plate (11) is fixedly connected to the outer side of the base (1); ) is fixedly connected to a slider 2 (12) on the outside, the connecting plate 2 (11) is fixedly connected to a connecting seat (13) on the top, a cylinder 1 (14) is arranged inside the connecting seat (13), the movable end of the cylinder 1 (14) is fixedly connected to a mounting plate (15), the outer side of the mounting plate (15) is fixedly connected to a cylinder 2 (16), the inner side of the mounting plate (15) is fixedly connected to a slide rail 3 (17), the top of the slide rail 3 (17) is slidably connected to a movable plate 2 (18), the top of the movable plate 2 (18) is fixedly connected to a cylinder 3 (19), the outer side of the cylinder 3 (19) is fixedly connected to a push-pull block (20), and the movable end of the cylinder 3 (19) is fixedly connected to a guard plate (21).

2. The automatic welding device for forklift overhead guard according to claim 1, characterized in that: The slide block 1 (5) is adapted to the slide rail 1 (3), and two identical clamping mechanisms (7) are provided. The two clamping mechanisms (7) are symmetrically distributed with respect to the base (1), and the anti-deformation structure (8) is located on the left side of the clamping mechanism (7).

3. The automatic welding device for forklift overhead guard according to claim 1, characterized in that: One end of the telescopic rod (9) is fixedly connected to the base (1), and the other end is fixedly connected to the second connecting plate (11); the second sliding block (12) is compatible with the second sliding rail (10).

4. The automatic welding device for forklift overhead guard according to claim 1, characterized in that: The connecting seat (13), cylinder one (14) and mounting plate (15) are provided with two identical ones, and the two connecting seats (13), cylinder one (14) and mounting plate (15) are symmetrically distributed with respect to the connecting plate two (11).

5. The automatic welding device for forklift overhead guard according to claim 1, characterized in that: The cross section of the mounting plate (15) is in an "H"-shaped structure, and two identical cylinders (16) are provided, and the two cylinders (16) are symmetrically distributed with respect to the base (1).

6. The automatic welding device for forklift overhead guard according to claim 1, characterized in that: The movable end of the second cylinder (16) is fixedly connected to the push-pull block (20), and the second movable plate (18) is adapted to the third slide rail (17).

7. The automatic welding device for forklift overhead guard according to claim 1, characterized in that: The push-pull block (20) is in a "concave"-shaped structure, and two identical cylinders (19) and guard plates (21) are symmetrically arranged.

Images