A positioning device for welding fuel tanks

Abstract

This utility model discloses a positioning device for welding fuel tanks, relating to the technical field of fuel tank manufacturing equipment. The device includes a base, with a rotating shaft rotatably mounted on the upper end of the base, and four support plates with vertical guide rails around the bottom of the rotating worktable. A slider is connected to a lead screw inside the guide rail, and an electric telescopic rod is mounted on the slider via a fixed plate. A pressure sensor, a sliding plate, a compression spring, and a guide rod are housed in a guide sleeve at the end of the electric telescopic rod. A push plate with a rubber pad is connected to the end of the guide rod. A second servo motor inside the base drives the rotating shaft, and all components are electrically connected to an external controller. During operation, the first servo motor adjusts the height of the push plate, causing the electric telescopic rod to extend the push plate. Feedback from the pressure sensor enables the fuel tank to self-center. The second servo motor drives the worktable to rotate for welding. It can adapt to fuel tanks of different heights, provides precise positioning and balanced clamping force, and can be used in conjunction with welding robots for efficient operation, improving the quality and efficiency of fuel tank welding.

Description

Technical Field

[0001] This utility model relates to the technical field of fuel tank manufacturing equipment, specifically a positioning device for fuel tank welding. Background Technology

[0002] Welding is a critical process in fuel tank manufacturing, and its quality directly affects the tank's sealing performance, structural strength, and service life. Traditional fuel tank welding positioning methods have several shortcomings: manual positioning is not only labor-intensive and inefficient, but also difficult to guarantee positioning accuracy, and is prone to weld misalignment due to human error, affecting welding quality; while fixed fixture positioning can guarantee accuracy to a certain extent, it has poor versatility, requiring different fixtures to be changed for different fuel tank specifications, increasing production costs and changeover time; at the same time, it is difficult to coordinate with robots to achieve efficient welding of multi-station, circumferential welds during the welding process, which restricts the automation level and efficiency improvement of fuel tank production.

[0003] Therefore, those skilled in the art have provided a positioning device for welding fuel tanks to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a positioning device for welding oil tanks, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A positioning device for welding fuel tanks includes a base. A vertical shaft is rotatably mounted on the upper end of the base. A horizontal rotating worktable is fixedly connected to the top of the shaft. Four support plates are fixedly mounted at equal angles around the bottom of the rotating worktable. A vertical guide rail is fixedly mounted on the upper end of the support plates. A lead screw is rotatably mounted inside the vertical guide rail. A slider is threaded onto the lead screw. The slider is slidably connected to the inner wall of the vertical guide rail. A horizontal fixing plate is fixedly connected to the inner side of the slider. A horizontal electric telescopic rod is fixedly mounted on the upper end of the fixing plate. A guide sleeve is fixedly connected to the piston rod end of the electric telescopic rod. A pressure sensor, a sliding plate, a compression spring, and a guide rod are provided inside the guide sleeve. The end of the guide rod extends to the outside of the guide sleeve and is fixedly connected to a push plate. A rubber pad is adhered to the end face of the push plate.

[0006] As a further embodiment of this utility model: a servo motor is fixedly installed on the top of the vertical guide rail, and the output shaft of the servo motor is fixedly connected to the top of the lead screw.

[0007] As a further improvement of this utility model: the base has an inner cavity, in which a second servo motor is installed. The output shaft of the second servo motor is fixedly connected to the bottom end of the rotating shaft. An inspection port is provided on one side of the base, and a cover plate is fixedly installed on the outside of the inspection port by bolts.

[0008] As a further improvement of this utility model, the servo motor one, servo motor two, pressure sensor and electric telescopic rod are all electrically connected to an external controller.

[0009] As a further embodiment of this utility model: the guide sleeve is a horizontally arranged cylindrical hollow structure, the pressure sensor is fixedly installed inside the guide sleeve at the end away from the push plate, and the slide plate is slidably connected to the inner wall of the guide sleeve and located on the side of the pressure sensor closer to the push plate.

[0010] As a further embodiment of this utility model: one end of the compression spring is fixedly connected to the side of the slide away from the pressure sensor, and the other end is fixedly connected to the end of the guide rod located inside the guide sleeve. The guide rod is slidably connected to the inner wall of the guide sleeve, and its axis is collinear with the axis of the electric telescopic rod.

[0011] As a further improvement of this utility model: the push plate has a circular structure, its rubber pad is located on the side close to the oil tank, and the surface of the rubber pad has uniformly distributed anti-slip texture.

[0012] As a further embodiment of this utility model: the vertical guide rail is a hollow rectangular structure with a groove on its inner wall that matches the slider; the top end of the lead screw is fixedly connected to the output shaft of the servo motor by a coupling; and the bottom end of the lead screw is rotatably connected to the inner bottom of the vertical guide rail by a bearing.

[0013] Compared with existing technologies, the advantages of this utility model are as follows: the height of the push plate is adjustable through a servo motor-driven screw-slider structure, adapting to different specifications of oil tanks and improving the versatility of the device; the feedback control of pressure sensors and compression springs ensures balanced clamping force in four directions, improving positioning accuracy while avoiding damage to the surface of the oil tank; the rotary worktable can be used in conjunction with the rotation of the welding robot, reducing the complexity of the robot's motion trajectory and improving welding efficiency; the rubber pads and anti-slip textures of the push plate enhance clamping stability, and the servo motor with encoder and the ball screw-type electric telescopic rod ensure precise action. The overall structure is reasonably designed, easy to operate, and can effectively meet the positioning requirements in the oil tank welding process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a positioning device for welding fuel tanks.

[0015] Figure 2 This is a schematic diagram of the inspection port on the base of a positioning device for welding fuel tanks.

[0016] Figure 3 This is a schematic diagram of the structure of an electric telescopic rod and a push plate in a positioning device for welding oil tanks.

[0017] Figure 4This is a schematic diagram of the internal structure of the base in a positioning device for welding fuel tanks.

[0018] In the diagram: 1. Base; 2. Rotary worktable; 3. Support plate; 4. Vertical guide rail; 5. Lead screw; 6. Slider; 7. Servo motor one; 8. Fixing plate; 9. Electric telescopic rod; 10. Push plate; 11. Inspection port; 12. Rotating shaft; 13. Guide sleeve; 14. Pressure sensor; 15. Slide plate; 16. Compression spring; 17. Guide rod; 18. Inner cavity; 19. Servo motor two. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0020] Reference Figures 1-4 This embodiment provides a positioning device for welding oil tanks, including a base 1. A vertical rotating shaft 12 is rotatably mounted on the upper end of the base 1. A horizontal rotating worktable 2 is fixedly connected to the top of the rotating shaft 12. Four support plates 3 are fixedly mounted at equal angles around the bottom of the rotating worktable 2. A vertical guide rail 4 is fixedly mounted on the upper end of the support plate 3. A lead screw 5 is rotatably mounted inside the vertical guide rail 4. A slider 6 is threaded onto the lead screw 5. The slider 6 is slidably connected to the inner wall of the vertical guide rail 4. A horizontal fixing plate 8 is fixedly connected to the inner side of the slider 6. A horizontal electric telescopic rod 9 is fixedly mounted on the upper end of the fixing plate 8. A guide sleeve 13 is fixedly connected to the piston rod end of the electric telescopic rod 9. A pressure sensor 14, a sliding plate 15, a compression spring 16, and a guide rod 17 are provided inside the guide sleeve 13. The end of the guide rod 17 extends to the outside of the guide sleeve 13 and is fixedly connected to a push plate 10. A rubber pad is adhered to the end face of the push plate 10.

[0021] Furthermore, the base 1 has an inner cavity 18, and a servo motor 2 19 is installed in the inner cavity 18. The output shaft of the servo motor 2 19 is fixedly connected to the bottom end of the rotating shaft 12. A maintenance port 11 is provided on one side of the base 1, and a cover plate is fixedly installed on the outside of the maintenance port 11 by bolts. Example

[0022] Reference Figures 1-4This embodiment is based on the previous embodiment, but differs from the previous embodiment in that a servo motor 7 is fixedly installed on the top of the vertical guide rail 4, and the output shaft of the servo motor 7 is fixedly connected to the top of the lead screw 5. The servo motor 7, the servo motor 19, the pressure sensor 14 and the electric telescopic rod 9 are all electrically connected to an external controller.

[0023] Furthermore, the guide sleeve 13 is a horizontally arranged cylindrical hollow structure. The pressure sensor 14 is fixedly installed inside the guide sleeve 13 at one end away from the push plate 10. The slide plate 15 is slidably connected to the inner wall of the guide sleeve 13 and is located on the side of the pressure sensor 14 close to the push plate 10. One end of the compression spring 16 is fixedly connected to the side of the slide plate 15 away from the pressure sensor 14, and the other end is fixedly connected to the end of the guide rod 17 located inside the guide sleeve 13. The guide rod 17 is slidably connected to the inner wall of the guide sleeve 13, and its axis is collinear with the axis of the electric telescopic rod 9.

[0024] Furthermore, the push plate 10 has a circular structure, with its rubber pad located on the side closest to the oil tank, and the surface of the rubber pad has evenly distributed anti-slip textures.

[0025] Furthermore, the vertical guide rail 4 is a hollow rectangular structure with a groove on its inner wall that matches the slider 6. The top end of the lead screw 5 is fixedly connected to the output shaft of the servo motor 7 via a coupling, and the bottom end of the lead screw 5 is rotatably connected to the inner bottom of the vertical guide rail 4 via a bearing.

[0026] When this positioning device for welding oil tanks is in operation, the oil tank is first placed on the rotary worktable 2. The external controller starts the servo motor 7, which drives the lead screw 5 to rotate, causing the slider 6 to slide up and down along the vertical guide rail 4. This allows the height of the electric telescopic rod 9 and the push plate 10 to be adjusted via the fixed plate 8 to accommodate oil tanks of different heights. Subsequently, the electric telescopic rod 9 extends synchronously. After the push plate 10 contacts the oil tank, the guide rod 17 retracts into the guide sleeve 13. The compression spring 16 pushes the slide plate 15 to compress the pressure sensor 14. The pressure sensor 14 feeds back the signal to the controller. When the pressure in the four directions reaches the balance threshold, the electric telescopic rod 9 stops moving, achieving automatic centering of the oil tank in the center of the rotary worktable 2. After positioning is completed, the external welding robot performs welding operations. The servo motor 19 drives the rotating shaft 12 to rotate the rotary worktable 2, cooperating with the robot to complete circumferential or multi-station welding. The inspection port 11 facilitates maintenance of the components inside the cavity 18 of the base 1.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A positioning device for welding fuel tanks, comprising a base (1), characterized in that, A vertical rotating shaft (12) is rotatably mounted on the upper end of the base (1). A horizontal rotating worktable (2) is fixedly connected to the top of the rotating shaft (12). Four support plates (3) are fixedly mounted at equal angles around the bottom of the rotating worktable (2). A vertical guide rail (4) is fixedly mounted on the upper end of the support plate (3). A lead screw (5) is rotatably mounted inside the vertical guide rail (4). A slider (6) is threaded onto the lead screw (5). The slider (6) is slidably connected to the inner wall of the vertical guide rail (4). (6) A horizontal fixed plate (8) is fixedly connected to the inner side. A horizontal electric telescopic rod (9) is fixedly installed at the upper end of the fixed plate (8). A guide sleeve (13) is fixedly connected to the piston rod end of the electric telescopic rod (9). A pressure sensor (14), a sliding plate (15), a compression spring (16) and a guide rod (17) are provided inside the guide sleeve (13). The end of the guide rod (17) extends to the outside of the guide sleeve (13) and is fixedly connected to a push plate (10). A rubber pad is glued to the end face of the push plate (10).

2. The positioning device for welding fuel tanks according to claim 1, characterized in that, A servo motor (7) is fixedly installed on the top of the vertical guide rail (4), and the output shaft of the servo motor (7) is fixedly connected to the top of the lead screw (5).

3. The positioning device for welding an oil tank according to claim 2, characterized in that, The base (1) has an inner cavity (18) inside, and a servo motor (19) is installed inside the inner cavity (18). The output shaft of the servo motor (19) is fixedly connected to the bottom end of the rotating shaft (12). The base (1) has an inspection port (11) on one side, and a cover plate is fixedly installed on the outside of the inspection port (11) by bolts.

4. A positioning device for welding fuel tanks according to claim 3, characterized in that, The servo motor one (7), servo motor two (19), pressure sensor (14) and electric telescopic rod (9) are all electrically connected to an external controller.

5. A positioning device for welding fuel tanks according to claim 1, characterized in that, The guide sleeve (13) is a horizontally arranged cylindrical hollow structure. The pressure sensor (14) is fixedly installed inside the guide sleeve (13) at one end away from the push plate (10). The slide plate (15) is slidably connected to the inner wall of the guide sleeve (13) and is located on the side of the pressure sensor (14) close to the push plate (10).

6. A positioning device for welding oil tanks according to claim 5, characterized in that, One end of the compression spring (16) is fixedly connected to the side of the slide plate (15) away from the pressure sensor (14), and the other end is fixedly connected to the end of the guide rod (17) located inside the guide sleeve (13). The guide rod (17) is slidably connected to the inner wall of the guide sleeve (13), and its axis is collinear with the axis of the electric telescopic rod (9).

7. A positioning device for welding fuel tanks according to claim 1, characterized in that, The push plate (10) has a circular structure, with its rubber pad located on the side close to the oil tank, and the surface of the rubber pad has uniformly distributed anti-slip texture.

8. A positioning device for welding fuel tanks according to claim 1, characterized in that, The vertical guide rail (4) is a hollow rectangular structure with a groove on its inner wall that is compatible with the slider (6). The top end of the lead screw (5) is fixedly connected to the output shaft of the servo motor (7) through a coupling, and the bottom end of the lead screw (5) is rotatably connected to the inner bottom of the vertical guide rail (4) through a bearing.

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