Welding assembly press-fitting jig

Abstract

The utility model discloses a welding assembly press-fitting jig which comprises a bottom plate, two mounting plates are movably mounted at the top end of the bottom plate, mounting holes are movably formed in the top ends of the mounting plates, a placing table is movably mounted in the mounting holes, a placing groove is formed in the top end of the placing table, and the mounting plates are movably mounted in the placing groove. A second press-fitting part is movably installed in the containing groove, three spring grooves are formed in the surface of the inner wall of the containing groove, pushing rods are slidably installed in the spring grooves, and inner arc-shaped pushing plates are fixedly installed at the outer ends of the pushing rods. According to the utility model, the telescopic rod is pushed out by the elastic potential energy of the compression spring so as to drive the outer arc-shaped push plate to extrude the surfaces of the first press-fitting part and the second press-fitting part, so that the first press-fitting part and the second press-fitting part are positioned, and the phenomenon that when the first press-fitting part and the second press-fitting part are pressed, the first press-fitting part and the second press-fitting part are damaged is avoided. And as the axes of the first press-fitting part and the second press-fitting part are inconsistent, the press-fitting of defective products is caused.

Description

Technical Field

[0001] This utility model relates to the field of press-fitting fixture technology, specifically a press-fitting 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 press-fit 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 lack of a two-way positioning mechanism during the press-fit process makes it easy for the axis of the press-fitted parts to be misaligned, resulting in defective products. Therefore, they do not meet the existing requirements. To address this, we propose a press-fit fixture for welded components. Utility Model Content

[0004] The purpose of this utility model is to provide a welding component press-fit fixture to solve the problems mentioned in the background art, such as the need to use different fixtures for clamping fuel pump parts due to different part sizes, which is very inconvenient, and the lack of a bidirectional positioning mechanism during the press-fit process, which makes it easy for the axis of the pressed part to be misaligned, resulting in defective products.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a welding component press-fit fixture, comprising a base plate, two mounting plates movably mounted on the top of the base plate, mounting holes movably mounted on the top of the mounting plates, a placement platform movably mounted inside the mounting holes, a placement groove provided at the top of the placement platform, a second press-fit part movably mounted inside the placement groove, three spring grooves provided on the inner wall surface of the placement groove, a push rod slidably mounted inside each of the spring grooves, an inner arc-shaped push plate fixedly mounted on the outer end of each push rod, the surface of each inner arc-shaped push plate fitting against the surface of the second press-fit part, a compression spring movably mounted between each push rod and the inside of the spring groove, and a first press-fit part movably mounted on the top of the second press-fit part.

[0006] Preferably, three support frames are fixedly installed at the top of the base plate, and a fixed platform is fixedly installed at the top of each support frame. A telescopic rod is slidably installed on the outer side of each fixed platform, and an outer arc-shaped push plate is fixedly installed at the outer end of each telescopic rod. A first pressing part is movably installed at the top of the second pressing part, and the surface of the outer arc-shaped push plate is in contact with the surfaces of the first pressing part and the second pressing part.

[0007] Preferably, each of the fixed platforms has a telescopic groove inside, one end of each telescopic rod is slidably inserted into the inside of the telescopic groove, and a compression spring is movably installed between the telescopic rod and the inside of the telescopic groove.

[0008] Preferably, the top surface of the placement platform is provided with three positioning holes, and the top of each of the three outer arc-shaped push plates is provided with positioning holes.

[0009] Preferably, the top surface of the mounting plate is provided with multiple positioning rings.

[0010] Preferably, the bottom end of the first pressing part is movably inserted into the interior of the second pressing part, and the bottom end of the first pressing part is interference-fitted with the second pressing part.

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

[0012] 1. This utility model, through the cooperation of the outer arc-shaped push plate and the telescopic rod, allows the telescopic rod to be pushed out by the elastic potential energy of the compression spring during use, thereby driving the outer arc-shaped push plate to press the surfaces of the first and second pressing parts, thereby positioning the first and second pressing parts and avoiding the situation of pressing defective products due to the misalignment of the axes of the first and second pressing parts during pressing.

[0013] 2. This utility model, through the cooperation of an inner arc-shaped push plate and a compression spring, allows the push rod to be pushed out by the elastic potential energy of the compression spring during use. This causes the inner arc-shaped push plate to compress the inner wall surface of the second pressing part, so that the second pressing part receives the force of simultaneous compression from both sides. This allows the device to press and install first and second pressing parts of different sizes while ensuring the relative position of the second pressing part and the first pressing part, thus improving processing accuracy. 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 side view of the entire utility model;

[0016] Figure 3 This is a top cross-sectional view of the entire utility model;

[0017] Figure 4 This is a top cross-sectional view of the placement slot location of this utility model;

[0018] Figure 5 This is an exploded structural diagram of the part processed according to this utility model.

[0019] In the diagram: 1. Base plate; 2. Mounting plate; 3. Positioning ring; 4. Mounting hole; 5. Placement platform; 6. Outer arc-shaped push plate; 7. Support frame; 8. Fixing platform; 9. Telescopic rod; 10. First pressing part; 11. Positioning hole; 12. Telescopic groove; 13. Compression spring; 14. Second pressing part; 15. Inner arc-shaped push plate; 16. Spring groove; 17. Compression spring; 18. Push rod; 19. Placement groove. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1 to 5 An embodiment of this utility model provides a welding component press-fit fixture, including a base plate 1, two mounting plates 2 movably mounted on the top of the base plate 1, mounting holes 4 movably mounted on the top of the mounting plates 2, a placement platform 5 movably mounted inside the mounting holes 4, a placement groove 19 provided at the top of the placement platform 5, a second press-fit part 14 movably mounted inside the placement groove 19, three spring grooves 16 provided on the inner wall surface of the placement groove 19, a push rod 18 slidably mounted inside each of the spring grooves 16, an inner arc-shaped push plate 15 fixedly mounted on the outer end of each push rod 18, the surface of the inner arc-shaped push plate 15 being in contact with the surface of the second press-fit part 14, a compression spring 17 movably mounted between the push rod 18 and the inside of the spring groove 16, and a first press-fit part 10 movably mounted on the top of the second press-fit part 14.

[0022] By cooperating with the inner arc-shaped push plate 15 and the compression spring 17, the push rod 18 can be pushed out by the elastic potential energy of the compression spring 17 during use. This causes the inner arc-shaped push plate 15 to compress the inner wall surface of the second pressing part 14, so that the second pressing part 14 receives the force of simultaneous compression from both sides. This allows the device to press the first pressing part 10 and the second pressing part 14 of different sizes while ensuring the relative position of the second pressing part 14 and the first pressing part 10, thus improving the processing accuracy.

[0023] Three support frames 7 are fixedly installed on the top of the base plate 1. A fixed platform 8 is fixedly installed on the top of each support frame 7. A telescopic rod 9 is slidably installed on the outer side of each fixed platform 8. An outer arc-shaped push plate 6 is fixedly installed on the outer end of each telescopic rod 9. A first pressing part 10 is movably installed on the top of the second pressing part 14. The surface of the outer arc-shaped push plate 6 is in contact with the surface of the first pressing part 10 and the second pressing part 14.

[0024] By cooperating with the outer arc-shaped push plate 6 and the telescopic rod 9, the telescopic rod 9 can be pushed out by the elastic potential energy of the compression spring 13 during use, thereby driving the outer arc-shaped push plate 6 to press the surfaces of the first pressing part 10 and the second pressing part 14, thereby positioning the first pressing part 10 and the second pressing part 14, and avoiding the situation where defective products are pressed out because the axes of the first pressing part 10 and the second pressing part 14 are not aligned.

[0025] The fixed platform 8 is equipped with a telescopic groove 12 inside. One end of the telescopic rod 9 is slidably inserted into the inside of the telescopic groove 12. A compression spring 13 is movably installed between the telescopic rod 9 and the inside of the telescopic groove 12.

[0026] The top surface of the placement platform 5 is provided with three positioning holes 11, and the top of each of the three outer arc-shaped push plates 6 is provided with positioning holes 11.

[0027] Multiple positioning rings 3 are provided on the top surface of the mounting plate 2.

[0028] The bottom end of the first pressing part 10 is movably inserted into the interior of the second pressing part 14, and the bottom end of the first pressing part 10 is interference-fitted with the second pressing part 14.

[0029] When using this welding assembly press-fit fixture, first, the outer arc-shaped push plate 6 is moved outward to retract the telescopic rod 9 into the telescopic groove 12, and then the inner arc-shaped push plate 15 is pressed inward to retract the push rod 18 into the spring groove 16. Then, the second press-fit part 14 is placed inside the placement groove 19 on the top surface of the placement table 5. At this point, the outer arc-shaped push plate 6 and the inner arc-shaped push plate 15 are released. The outer arc-shaped push plate 6 will rebound due to the elastic potential energy of the compression spring 13, thus squeezing the second press-fit part 14. Simultaneously, the inner arc-shaped push plate 15 rebounds due to the elastic potential energy of the compression spring 17, pressing the second pressing part 14. At this time, the second pressing part 14 is simultaneously pressed by the inner arc-shaped push plate 15 and the outer arc-shaped push plate 6, thus the second pressing part 14 receives pressure from both sides. This allows the device to press and install first pressing parts 10 and second pressing parts 14 of different sizes while ensuring the relative position of the second pressing part 14 and the first pressing part 10, improving processing accuracy.

[0030] Then, the first pressing part 10 is placed at the top of the second pressing part 14, so that the axial positions of the first pressing part 10 and the second pressing part 14 correspond. At this time, the top of the first pressing part 10 can be pressed downward by the pressing equipment, so that the bottom end of the first pressing part 10 is inserted into the interior of the second pressing part 14, thereby completing the pressing fit of the first pressing part 10 and the second pressing part 14.

[0031] 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 welding assembly press-fit fixture, comprising a base plate (1), characterized in that: Two mounting plates (2) are movably installed on the top of the base plate (1). Mounting holes (4) are movably installed on the top of the mounting plates (2). A placement platform (5) is movably installed inside the mounting holes (4). A placement groove (19) is provided on the top of the placement platform (5). A second pressing part (14) is movably installed inside the placement groove (19). Three spring grooves (16) are provided on the inner wall surface of the placement groove (19). Push rods (18) are slidably installed inside each of the spring grooves (16). An inner arc-shaped push plate (15) is fixedly installed on the outer end of each push rod (18). The surface of the inner arc-shaped push plate (15) is in contact with the surface of the second pressing part (14). A compression spring (17) is movably installed between the push rod (18) and the inside of the spring groove (16). A first pressing part (10) is movably installed on the top of the second pressing part (14).

2. The welding assembly press-fitting fixture according to claim 1, characterized in that: Three support frames (7) are fixedly installed at the top of the base plate (1). Each support frame (7) has a fixed platform (8) fixedly installed at its top. Each fixed platform (8) has a telescopic rod (9) slidably installed on its outer side. Each telescopic rod (9) has an outer arc-shaped push plate (6) fixedly installed at its outer end. The surface of the outer arc-shaped push plate (6) is in contact with the surface of the first pressing part (10) and the second pressing part (14).

3. The welding assembly press-fitting fixture according to claim 2, characterized in that: The fixed platform (8) is provided with a telescopic groove (12) inside. One end of the telescopic rod (9) is slidably inserted into the telescopic groove (12). A compression spring (13) is movably installed between the telescopic rod (9) and the inside of the telescopic groove (12).

4. The welding assembly press-fitting fixture according to claim 2, characterized in that: The top surface of the placement platform (5) is provided with three positioning holes (11), and the top of each of the three outer arc-shaped push plates (6) is provided with positioning holes (11).

5. The welding assembly press-fitting fixture according to claim 1, characterized in that: The top surface of the mounting plate (2) is provided with multiple positioning rings (3).

6. The welding assembly press-fitting fixture according to claim 1, characterized in that: The bottom end of the first press-fitting part (10) is movably inserted into the interior of the second press-fitting part (14), and the bottom end of the first press-fitting part (10) is interference-fitted with the second press-fitting part (14).

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