Positioning welding jig for welding assembly

Abstract

The positioning welding jig for the welding assembly comprises a bottom plate, two supporting plates are movably installed at the top end of the bottom plate, an assembling plate is movably installed at the top ends of the supporting plates, a base is fixedly installed at the top end of the assembling plate, and a rotating table is rotatably installed at the top end of the base. A positioning table is movably mounted in the top end of the rotating table, and telescopic rods are slidably mounted on the two sides of the top end of the positioning table. The positioning ring is grasped, the positioning ring and the telescopic rod are pulled out from the interior of the telescopic groove, then the third part is installed on the surface of the positioning table, the rotating rod and the telescopic rod penetrate through the interior of the positioning hole, at the moment, the positioning ring is loosened, and the rotating rod can rotate outwards under the elastic force of the torsion spring; and therefore, the rotating rod is clamped at the edge position of the outer side of the third part, the third part is fixed, positioning of the third part is achieved, and the situation that when the third part and the second part are welded, the third part shakes, and a welded finished product is affected is avoided.

Description

Technical Field

[0001] This utility model relates to the field of welding fixture technology, specifically a positioning welding fixture for welding components. Background Technology

[0002] The fuel pump is one of the basic components of the fuel injection system in electronic fuel injection vehicles. It is located inside the vehicle's fuel tank and operates when the engine is started and running. If the engine stops but the ignition switch is still on, the HFM-SFI control module shuts off the power to the fuel pump to prevent accidental ignition. During the assembly and manufacturing of the fuel pump, a special-shaped part is required to be installed inside the fuel pump and to control the flow rate. This part usually requires welding and press-fitting processes during production.

[0003] Existing welding fixtures for fuel pump parts often require different fixtures for clamping due to the different sizes of the parts, which is very inconvenient. In addition, the parts are not positioned before welding, which makes them prone to shaking during welding and resulting in defective products. Therefore, they do not meet the current requirements. To address this, we propose a positioning welding fixture for welding components. Utility Model Content

[0004] The purpose of this utility model is to provide a positioning welding fixture for welding components, so as to solve the problems mentioned in the background art. When using the welding fixture for fuel pump parts, different fixtures are often required for clamping due to different part sizes, which is very inconvenient. In addition, the parts are not positioned before welding, which makes the parts prone to shaking during rotation and thus producing defective products.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a positioning welding fixture for welding components, comprising a base plate, two support plates movably mounted on the top of the base plate, an assembly plate movably mounted on the top of the support plates, a base fixedly mounted on the top of the assembly plate, a rotating platform rotatably mounted on the top of the base, a positioning platform movably mounted inside the top of the rotating platform, telescopic rods slidably mounted on both sides of the top of the positioning platform, each telescopic rod having a rotating groove at its top, a rotating rod rotatably mounted inside each rotating groove via a rotating shaft, and a positioning ring fixedly mounted on the outer end of each rotating rod.

[0006] Preferably, a third part is movably mounted on the top of the positioning platform, a second part is provided on the top of the third part, a first part is movably mounted on the top of the second part, and positioning holes are provided on both sides of the third part.

[0007] Preferably, the top of the positioning platform is provided with a telescopic groove near the telescopic rod, the telescopic rod is slidably inserted into the inside of the telescopic groove, a compression spring is movably installed on the outer surface of the telescopic rod, and a torsion spring is movably installed at both ends of the rotating shaft located inside the rotating groove.

[0008] Preferably, both sides of the positioning platform are provided with lifting grooves, and lifting rods are slidably installed inside the lifting grooves. A semi-circular plate is fixedly installed at the top of each lifting rod. An arc-shaped groove is provided on the outer surface of each semi-circular plate. An arc-shaped plate is slidably installed inside each arc-shaped groove. A bending spring is movably installed between each arc-shaped plate and the inside of the arc-shaped groove. Each arc-shaped plate is movably inserted into the inside of the positioning hole.

[0009] Preferably, the first part and the second part are interference-fitted, the bottom end of the second part is welded to the top end of the third part, and the surface of the rotating rod is in contact with the outer surface of the third part.

[0010] Preferably, a brake motor is provided on one side of the top of the base plate, and the output end of the brake motor is connected to the shaft of the rotary table through a gearbox. A connecting frame is fixedly installed on the top of the assembly plate, and a photoelectric sensor is provided on the top of the connecting frame. A baffle is movably installed on the top of the photoelectric sensor. A limiting groove is provided on the top surface of the rotary table, and the baffle is movably inserted into the interior of the limiting groove.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. This utility model, through the cooperation of the telescopic rod and the rotating rod, allows the device to be used such that, before the third part is placed on the surface of the positioning table, the positioning ring is first grasped, and the positioning ring and the telescopic rod are pulled outward from the inside of the telescopic groove. Then, the third part is installed on the surface of the positioning table, so that the rotating rod and the telescopic rod pass through the inside of the positioning hole. At this time, the positioning ring is released, and the rotating rod will be rotated outward by the elastic force of the torsion spring, so that the rotating rod is locked at the outer edge of the third part, thus fixing the third part. At the same time, the telescopic rod will be contracted inward by the elastic potential energy of the compression spring, thereby fixing the third part on the surface of the telescopic rod, realizing the positioning of the third part, and avoiding the shaking of the third part during the welding of the second part, which would affect the welded product.

[0013] 2. This utility model, through the cooperation of the arc-shaped plate and the positioning ring, allows the device to be used when preparing to weld the second and third parts. First, the lifting rod can be moved inside the lifting groove, bringing the arc-shaped plate close to the positioning ring. Then, the arc-shaped plate is pushed inward to retract into the arc-shaped groove. Next, the arc-shaped plate is moved to the same horizontal height as the positioning ring. Releasing the arc-shaped plate allows it to be pushed out by the elastic potential energy of the bending spring and locked into the positioning ring. Its own weight then pulls the positioning ring, preventing the rotating rod from rotating outward due to centrifugal force during the positioning table's rotation. This increases the clamping force of the telescopic rod and the rotating rod, preventing the production of defective products. Furthermore, when clamping second and third parts of different sizes, the height of the lifting rod can be adjusted through the lifting groove to adapt to different positioning ring heights, facilitating the use of the device. Attached Figure Description

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a cross-sectional front view of the entire utility model;

[0016] Figure 3 For this utility model Figure 2 A partial structural diagram of part A in the middle;

[0017] Figure 4 For this utility model Figure 3 Top view of a partial cross-section of section B in the middle section;

[0018] Figure 5 This is a schematic diagram of the structure of the machined part according to this utility model;

[0019] Figure 6 This is an exploded structural diagram of the part processed according to this utility model.

[0020] In the diagram: 1. Base plate; 2. Support plate; 3. Assembly plate; 4. Base; 5. Rotary table; 6. Positioning table; 7. Limiting groove; 8. Baffle; 9. Photoelectric sensor; 10. Positioning hole; 11. Brake motor; 12. First part; 13. Second part; 14. Third part; 15. Telescopic groove; 16. Telescopic rod; 17. Compression spring; 18. Rotating groove; 19. Rotating rod; 20. Positioning ring; 21. Lifting groove; 22. Lifting rod; 23. Semicircular plate; 24. Arc plate; 25. Arc groove; 26. Bending spring. Detailed Implementation

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Please see Figures 1 to 6 An embodiment of this utility model provides a positioning welding fixture for welding components, including a base plate 1. Two support plates 2 are movably installed on the top of the base plate 1. An assembly plate 3 is movably installed on the top of the support plates 2. A base 4 is fixedly installed on the top of the assembly plate 3. A rotating table 5 is rotatably installed on the top of the base 4. A positioning table 6 is movably installed inside the top of the rotating table 5. Telescopic rods 16 are slidably installed on both sides of the top of the positioning table 6. Each telescopic rod 16 has a rotating groove 18 at its top. A rotating rod 19 is rotatably installed inside the rotating groove 18 via a rotating shaft. A positioning ring 20 is fixedly installed on the outer end of the rotating rod 19.

[0023] A third part 14 is movably mounted on the top of the positioning platform 6. A second part 13 is provided on the top of the third part 14. A first part 12 is movably mounted on the top of the second part 13. Positioning holes 10 are provided on both sides of the third part 14.

[0024] The top of the positioning platform 6 is provided with a telescopic groove 15 near the telescopic rod 16. The telescopic rod 16 is slidably inserted into the telescopic groove 15. A compression spring 17 is movably installed on the outer surface of the telescopic rod 16. Both ends of the rotating shaft located inside the rotating groove 18 are movably installed with torsion springs.

[0025] By cooperating with the telescopic rod 16 and the rotating rod 19, when the device is in use, before the third part 14 is placed on the surface of the positioning table 6, the positioning ring 20 is first grasped, and the positioning ring 20 and the telescopic rod 16 are pulled outward from the inside of the telescopic groove 15. Then, the third part 14 is installed on the surface of the positioning table 6, so that the rotating rod 19 and the telescopic rod 16 pass through the inside of the positioning hole 10. At this time, the positioning ring 20 is released, and the rotating rod 19 will be rotated outward by the elastic force of the torsion spring, so that the rotating rod 19 is locked at the outer edge of the third part 14, fixing the third part 14. At the same time, the telescopic rod 16 will be contracted into the telescopic groove 15 by the elastic potential energy of the compression spring 17, thereby fixing the third part 14 on the surface of the telescopic rod 16, realizing the positioning of the third part 14, and preventing the third part 14 from shaking during the welding of the second part 13, which would affect the welded product.

[0026] Both sides of the positioning platform 6 are provided with lifting grooves 21. Lifting rods 22 are slidably installed inside the lifting grooves 21. Semicircular plates 23 are fixedly installed at the top of the lifting rods 22. Arc-shaped grooves 25 are provided on the outer surface of the semicircular plates 23. Arc-shaped plates 24 are slidably installed inside the arc-shaped grooves 25. Bending springs 26 are movably installed between the arc-shaped plates 24 and the arc-shaped grooves 25. The arc-shaped plates 24 are movably inserted into the positioning holes 10.

[0027] By cooperating with the arc-shaped plate 24 and the positioning ring 20, when the device is in use and the second part 13 and the third part 14 are to be welded, the lifting rod 22 can be moved inside the lifting groove 21 first, so that the arc-shaped plate 24 is close to the position of the positioning ring 20. At this time, the arc-shaped plate 24 is pushed inward to retract into the arc-shaped groove 25. Then, the arc-shaped plate 24 is moved to the same horizontal height position as the positioning ring 20. The arc-shaped plate 24 is released, and it will be pushed out by the elastic potential energy of the bending spring 26 and stuck into the interior of the positioning ring 20. Then, it pulls the positioning ring 20 by its own gravity, which prevents the rotating rod 19 from rotating outward due to centrifugal force during the rotation of the positioning table 6. This increases the clamping force of the telescopic rod 16 and the rotating rod 19, avoiding the production of defective products. When the device clamps the second part 13 and the third part 14 of different sizes, the height of the lifting rod 22 can be adjusted through the lifting groove 21 to adapt to the height position of different positioning rings 20, which facilitates the use of the device.

[0028] The first part 12 and the second part 13 are interference-fitted, the bottom end of the second part 13 is welded to the top end of the third part 14, and the surface of the rotating rod 19 is in contact with the outer surface of the third part 14.

[0029] A brake motor 11 is provided on one side of the top of the base plate 1. The output end of the brake motor 11 is connected to the shaft of the rotary table 5 through a gearbox. A connecting frame is fixedly installed on the top of the mounting plate 3. A photoelectric sensor 9 is provided on the top of the connecting frame. A baffle 8 is movably installed on the top of the photoelectric sensor 9. A limit groove 7 is provided on the top surface of the rotary table 5. The baffle 8 is movably inserted into the interior of the limit groove 7.

[0030] When using this welding assembly with a positioning welding fixture, before placing the third part 14 on the surface of the positioning table 6, first grasp the positioning ring 20 and pull the positioning ring 20 and the telescopic rod 16 outward from the inside of the telescopic groove 15. Then, install the third part 14 on the surface of the positioning table 6, so that the rotating rod 19 and the telescopic rod 16 pass through the inside of the positioning hole 10. At this time, release the positioning ring 20, and the rotating rod 19 will be rotated outward by the elastic force of the torsion spring, thereby locking the rotating rod 19 at the outer edge of the third part 14 and fixing the third part 14. At the same time, the telescopic rod 16 will be contracted into the telescopic groove 15 by the elastic potential energy of the compression spring 17, thereby fixing the third part 14 on the surface of the telescopic rod 16, realizing the positioning of the third part 14, and preventing the third part 14 from shaking during the welding of the second part 13, which would affect the finished weld.

[0031] When preparing to weld the second part 13 and the third part 14, the lifting rod 22 can be moved inside the lifting groove 21 first, so that the arc plate 24 is close to the position of the positioning ring 20. At this time, the arc plate 24 is pushed inward to retract into the arc groove 25. Then, the arc plate 24 is moved to the same horizontal height position as the positioning ring 20. The arc plate 24 is released, and the arc plate 24 will be pushed out by the elastic potential energy of the bending spring 26 and stuck into the interior of the positioning ring 20. Then, the positioning ring 20 is pulled by its own gravity, which prevents the rotating rod 19 from rotating outward due to centrifugal force during the rotation of the positioning table 6. This increases the clamping force of the telescopic rod 16 and the rotating rod 19, avoids the production of defective products, and when the device clamps the second part 13 and the third part 14 of different sizes, the height of the lifting rod 22 can be adjusted through the lifting groove 21 to adapt to the height position of different positioning rings 20, which facilitates the use of the device.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A positioning welding fixture for welding components, comprising a base plate (1), characterized in that: Two support plates (2) are movably installed on the top of the base plate (1). An assembly plate (3) is movably installed on the top of the support plate (2). A base (4) is fixedly installed on the top of the assembly plate (3). A rotating platform (5) is rotatably installed on the top of the base (4). A positioning platform (6) is movably installed inside the top of the rotating platform (5). Telescopic rods (16) are slidably installed on both sides of the top of the positioning platform (6). A rotating groove (18) is provided on the top of each telescopic rod (16). A rotating rod (19) is rotatably installed inside each rotating groove (18) via a rotating shaft. A positioning ring (20) is fixedly installed on the outer end of each rotating rod (19).

2. The positioning welding fixture for welding components according to claim 1, characterized in that: The top of the positioning platform (6) is movably mounted with a third part (14), the top of the third part (14) is provided with a second part (13), the top of the second part (13) is movably mounted with a first part (12), and both sides of the third part (14) are provided with positioning holes (10).

3. The positioning welding fixture for welding components according to claim 1, characterized in that: The top of the positioning platform (6) is provided with a telescopic groove (15) near the telescopic rod (16). The telescopic rod (16) is slidably inserted into the telescopic groove (15). A compression spring (17) is movably installed on the outer surface of the telescopic rod (16). Torsion springs are movably installed at both ends of the rotating shaft located inside the rotating groove (18).

4. The positioning welding fixture for welding components according to claim 1, characterized in that: The positioning platform (6) is provided with lifting grooves (21) on both sides. Lifting rods (22) are slidably installed inside the lifting grooves (21). A semi-circular plate (23) is fixedly installed at the top of the lifting rods (22). An arc-shaped groove (25) is provided on the outer surface of the semi-circular plate (23). An arc-shaped plate (24) is slidably installed inside the arc-shaped groove (25). A bending spring (26) is movably installed between the arc-shaped plate (24) and the arc-shaped groove (25). The arc-shaped plate (24) is movably inserted into the positioning hole (10).

5. A positioning welding fixture for welding components according to claim 2, characterized in that: The first part (12) and the second part (13) are interference fit, the bottom end of the second part (13) is welded to the top end of the third part (14), and the surface of the rotating rod (19) is in contact with the outer surface of the third part (14).

6. A positioning welding fixture for welding components according to claim 1, characterized in that: A brake motor (11) is provided on one side of the top of the base plate (1). The output end of the brake motor (11) is connected to the shaft of the rotary table (5) through a gearbox. A connecting frame is fixedly installed on the top of the assembly plate (3). A photoelectric sensor (9) is provided on the top of the connecting frame. A baffle (8) is movably installed on the top of the photoelectric sensor (9). A limiting groove (7) is provided on the top surface of the rotary table (5). The baffle (8) is movably inserted into the interior of the limiting groove (7).

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