A tooling fixture for processing fuel pipes

By designing a fuel pipe processing fixture with an adjustable sliding seat and flexible gasket, the problem that traditional fixtures cannot adapt to fuel pipes of different lengths has been solved, improving processing efficiency and accuracy while reducing costs.

CN224425340UActive Publication Date: 2026-06-30NINGBO BEILUN JIECHENG MACHINERY CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NINGBO BEILUN JIECHENG MACHINERY CO LTD
Filing Date
2025-07-09
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Traditional fuel pipe processing uses fixed fixtures that cannot accommodate fuel pipes of different lengths, leading to frequent fixture changes or equipment adjustments, increasing costs and reducing production efficiency.

Method used

A tooling fixture including an L-shaped base and a sliding seat is designed. The sliding seat slides through a trapezoidal slide rail and its position is adjustable. Combined with a lead screw and guide rod transmission structure, it can achieve flexible clamping. It is equipped with a flexible gasket to protect the pipe. Positioning components and limit components ensure stability and accuracy.

Benefits of technology

It improves the applicability and processing efficiency of the fixture, reduces equipment adjustment costs, protects the surface quality of the fuel pipe, and meets the requirements of high-precision processing.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224425340U_ABST
    Figure CN224425340U_ABST
Patent Text Reader

Abstract

This utility model discloses a tooling fixture for processing fuel pipes; belonging to the field of fuel pipe technology; its key technical features include an L-shaped base, with a placement groove on the top of the horizontal plate of the L-shaped base, in which the fuel pipe body is placed; a trapezoidal slide rail is fixedly connected to the rear side of the vertical plate of the L-shaped base; and two sliding seats are provided above the horizontal plate of the L-shaped base. This utility model, by setting a trapezoidal slide rail on the rear side of the vertical plate of the L-shaped base and providing two sliding seats that can slide along the slide rail above the horizontal plate, with the sliding seats fixed in position by the clamping screws of the positioning assembly, allows the clamping point of the pressure plate to be flexibly adjusted according to the length of the fuel pipe. This solves the problem of traditional fixtures having a fixed structure and being unable to adapt to fuel pipes of different lengths, significantly improving the applicability of the fixture, avoiding the tedious operation of frequently changing fixtures or adjusting equipment, reducing processing costs, and improving production efficiency.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of fuel pipe technology, specifically a tooling fixture for processing fuel pipes. Background Technology

[0002] In the field of fuel pipe machining, the stability and applicability of tooling fixtures directly affect machining accuracy and efficiency. Currently, traditional fuel pipe machining fixtures generally suffer from a technical bottleneck due to their fixed structure, specifically manifested as follows:

[0003] Existing clamps typically employ a fixed clamping structure, where the positions of the positioning and clamping components are relatively fixed. This means they can only accommodate fuel pipes of a specific length range. When processing fuel pipes of different lengths, traditional clamps cannot flexibly adjust the clamping position to adapt to changes in pipe size, requiring operators to frequently change clamps or adjust equipment. This not only increases processing costs but also reduces production efficiency. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a tooling fixture for fuel pipe processing. This technical solution solves the problem mentioned in the background art that existing fixtures typically employ a fixed clamping structure, where the positions of the positioning component and the clamping component are relatively fixed, and can only adapt to fuel pipes within a specific length range. When processing fuel pipes of different lengths, traditional fixtures cannot flexibly adjust the clamping position to adapt to changes in pipe size, resulting in operators having to frequently change fixtures or adjust equipment, which not only increases processing costs but also reduces production efficiency.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A tooling fixture for processing fuel pipes includes an L-shaped base. A placement groove is formed at the top of the horizontal plate of the L-shaped base, in which a fuel pipe body is placed. A trapezoidal slide rail is fixedly connected to the rear side of the vertical plate of the L-shaped base. Two sliding seats are arranged above the horizontal plate of the L-shaped base. A trapezoidal groove adapted to the trapezoidal slide rail is formed on the front side of each sliding seat. The sliding seat is slidably mounted on the trapezoidal slide rail through the cooperation of the trapezoidal groove. A first mounting groove is formed on each sliding seat, in which a vertically arranged lead screw is rotatably connected. A component fixedly connected to the first mounting groove is... A plurality of first guide rods parallel to the lead screw are slidably connected to the pressure plate. The top end of the lead screw extends to the top of the sliding seat and is integrally formed with a connecting rod. A handwheel is fixedly connected to the top end of the connecting rod. A pressure plate for pressing the fuel pipe body is threadedly connected to the lead screw. A fastening assembly for fastening the connecting rod is provided on the top of the sliding seat. A positioning assembly is provided on one side of the sliding seat near the bottom. A limit assembly is provided inside the vertical plate of the L-shaped base near the right end. A limit block is fixedly connected to the rear side of the vertical plate of the L-shaped base near the left end.

[0007] Preferably, mounting plates are fixedly connected to both ends of the L-shaped base, and mounting holes are provided on the mounting plates.

[0008] Preferably, the bottom of the pressure plate is provided with a limiting groove corresponding to the placement groove, a first flexible pad is provided in the limiting groove, and a second flexible pad is provided in the placement groove.

[0009] Preferably, the fastening assembly includes a mounting block fixedly connected to the top of the sliding seat. The mounting block has a second mounting groove, and a horizontally arranged bidirectional lead screw is rotatably connected in the second mounting groove. Two clamping blocks for clamping the connecting rod are threadedly connected to the bidirectional lead screw. The top end of the bidirectional lead screw extends to the outside of the mounting block and is fixedly connected to a knob. A second guide rod parallel to the bidirectional lead screw is fixedly connected in the second mounting groove. Both clamping blocks are slidably connected to the second guide rod.

[0010] Preferably, the connecting rod has a rough surface corresponding to the position of the clamping block, and the clamping surface of the clamping block has an arc-shaped groove adapted to the connecting rod, and an anti-slip pad is provided in the arc-shaped groove.

[0011] Preferably, the positioning component includes a fixing block fixedly connected to one side of the sliding seat, and a vertically arranged clamping screw is threaded onto the fixing block. The bottom end of the clamping screw can abut against the horizontal plate of the L-shaped base to fix the position of the sliding seat.

[0012] Preferably, the limiting component includes a sliding cavity formed inside the vertical plate of the L-shaped base, a horizontally arranged limiting rod is movably inserted in the sliding cavity, the limiting rod and the trapezoidal slide rail are located on the same horizontal plane, a pressure ring located inside the sliding cavity is fixedly connected to the limiting rod, a spring located in front of the pressure ring is sleeved on the limiting rod, the front end of the limiting rod extends to the outside of the L-shaped base and is fixedly connected to a pull ring, and the rear end of the limiting rod extends to the outside of the L-shaped base, for limiting the sliding seat.

[0013] Preferably, the front and rear sides of the vertical plate of the L-shaped base are fixedly connected with a fixing ring coaxial with the sliding cavity, and the inner ring of the fixing ring is evenly distributed with bristles adapted to the limiting rod.

[0014] Compared with the prior art, this utility model provides a tooling fixture for processing fuel pipes, which has the following advantages:

[0015] 1. This utility model provides a trapezoidal slide rail on the rear side of the vertical plate of the L-shaped base, and two sliding seats that can slide along the slide rail on the upper side of the horizontal plate. The sliding seats are fixed in position by the clamping screws of the positioning component, so that the clamping point of the pressure plate can be flexibly adjusted according to the length of the fuel pipe. This solves the problem that the traditional clamp structure is fixed and cannot be adapted to fuel pipes of different lengths, significantly improves the applicability of the clamp, avoids the tedious operation of frequently changing clamps or adjusting equipment, reduces processing costs and improves production efficiency.

[0016] 2. This utility model sets a first flexible pad and a second flexible pad in the bottom limiting groove and the placement groove of the pressure plate, respectively. The flexible buffer structure reduces damage to the surface of the fuel pipe. At the same time, the fastening component at the top of the sliding seat can drive the clamping block to fix the connecting rod through the bidirectional screw. With the transmission structure of the screw and the guide rod, the pressure plate can stably press the fuel pipe, which can effectively protect the surface quality of the fuel pipe while ensuring the clamping accuracy and meeting the requirements of high-precision processing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the sliding seat in this utility model;

[0019] Figure 3 This is a schematic diagram of the limiting block in this utility model;

[0020] Figure 4 This is a schematic diagram of the limiting component in this utility model;

[0021] Figure 5 This is a schematic diagram of the positioning component in this utility model;

[0022] Figure 6This is a schematic diagram of the fastening component in this utility model.

[0023] The following components are labeled in the diagram: 1. L-shaped base; 2. Placement slot; 3. Fuel pipe body; 4. Trapezoidal slide rail; 5. Sliding seat; 6. First mounting slot; 7. Lead screw; 8. Connecting rod; 9. Handwheel; 10. Fastening assembly; 1001. Mounting block; 1002. Second mounting slot; 1003. Two-way lead screw; 1004. Knob; 1005. Second guide rod; 1006. Clamping block; 11. Trapezoidal groove; 12. Pressure plate; 13. Positioning assembly. ; 1301, Fixing block; 1302, Tightening screw; 14, Limiting assembly; 1401, Sliding cavity; 1402, Limiting rod; 1403, Pressure ring; 1404, Spring; 1405, Pull ring; 15, Limiting block; 16, Mounting plate; 17, Mounting hole; 18, Limiting groove; 19, First flexible pad; 20, Second flexible pad; 21, First guide rod; 22, Rough surface; 23, Anti-slip pad; 24, Fixing ring; 25, Brush bristles. Detailed Implementation

[0024] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0025] Example 1

[0026] Please refer to Figures 1 to 6 As shown, a tooling fixture for processing fuel pipes includes an L-shaped base 1. A placement groove 2 is formed on the top of the horizontal plate of the L-shaped base 1, in which a fuel pipe body 3 is placed. A trapezoidal slide rail 4 is fixedly connected to the rear side of the vertical plate of the L-shaped base 1. Two sliding seats 5 are arranged above the horizontal plate of the L-shaped base 1. A trapezoidal groove 11, adapted to the trapezoidal slide rail 4, is formed on the front side of each sliding seat 5. The sliding seats 5 are slidably mounted on the trapezoidal slide rail 4 through the cooperation of the trapezoidal groove 11. A first mounting groove 6 is formed on each sliding seat 5. A vertically arranged lead screw 7 is rotatably connected within the first mounting groove 6. A component fixedly connected to the lead screw is also within the first mounting groove 6. A plurality of parallel first guide rods 21 are provided, the first guide rods 21 being slidably connected to the pressure plate 12. The top end of the lead screw 7 extends to the top of the sliding seat 5 and is integrally formed with a connecting rod 8. The top end of the connecting rod 8 is fixedly connected to a handwheel 9. The lead screw 7 is threadedly connected to a pressure plate 12 for pressing the fuel pipe body 3. The top of the sliding seat 5 is provided with a fastening assembly 10 for fastening the connecting rod 8. A positioning assembly 13 is provided on one side of the sliding seat 5 near the bottom. A limit assembly 14 is provided inside the vertical plate of the L-shaped base 1 near the right end. A limit block 15 is fixedly connected to the rear side of the vertical plate of the L-shaped base 1 near the left end.

[0027] Those skilled in the art will understand that the fuel pipe body 3 is placed in the placement groove 2 at the top of the horizontal plate of the L-shaped base 1, and the two sliding seats 5 are slidably engaged with the trapezoidal slide rail 4 on the rear side of the vertical plate through the trapezoidal groove 11 on the front side, and can move laterally along the slide rail to adjust their position. Turning the handwheel 9 drives the connecting rod 8 and the lead screw 7 to rotate, and the lead screw 7 causes the pressure plate 12 to move up and down along the first guide rod 21 through thread transmission, thereby pressing the fuel pipe body 3; the positioning component 13 is used to fix the position of the sliding seat 5, and the limiting component 14 and the limiting block 15 limit the range of movement of the sliding seat 5 to prevent the sliding seat 5 from falling off the trapezoidal slide rail 4.

[0028] By cooperating with the sliding seat 5 and the trapezoidal slide rail 4, the position of the clamping point can be flexibly adjusted according to the length of the fuel pipe, solving the problem of fixed structure of traditional clamps, improving applicability, reducing equipment adjustment costs, and improving processing efficiency.

[0029] Example 2

[0030] Furthermore, mounting plates 16 are fixedly connected to both ends of the L-shaped base 1, and mounting holes 17 are provided on the mounting plates 16.

[0031] Those skilled in the art will understand that the mounting plates 16 at the left and right ends of the L-shaped base 1 are fixedly connected to the processing equipment through the mounting holes 17 to realize the installation and positioning of the tooling fixture.

[0032] The mounting plate 16 and mounting holes 17 allow the fixture to be securely mounted on the equipment, ensuring the stability of the fixture during processing and preventing the fuel pipe processing accuracy from being affected by the fixture shaking.

[0033] Example 3

[0034] Furthermore, the bottom of the pressure plate 12 is provided with a limiting groove 18 corresponding to the placement groove 2, a first flexible pad 19 is provided in the limiting groove 18, and a second flexible pad 20 is provided in the placement groove 2.

[0035] Those skilled in the art will understand that the limiting groove 18 at the bottom of the pressure plate 12 corresponds to the placement groove 2. When the pressure plate 12 is pressed down, the first flexible pad 19 in the limiting groove 18 and the second flexible pad 20 in the placement groove 2 come into contact with the surface of the fuel pipe body 3, and the clamping force is buffered by the flexible material.

[0036] The first flexible pad 19 and the second flexible pad 20 can prevent indentation or damage to the surface of the fuel pipe during clamping, protect the surface quality of the pipe, and are especially suitable for high-precision fuel pipe processing to ensure its sealing performance and service life.

[0037] Example 4

[0038] Furthermore, the fastening assembly 10 includes a mounting block 1001 fixedly connected to the top of the sliding seat 5. The mounting block 1001 has a second mounting groove 1002. A horizontally arranged bidirectional lead screw 1003 is rotatably connected in the second mounting groove 1002. Two clamping blocks 1006 for clamping the connecting rod 8 are threadedly connected to the bidirectional lead screw 1003. The top end of the bidirectional lead screw 1003 extends to the outside of the mounting block 1001 and is fixedly connected to a knob 1004. A second guide rod 1005 parallel to the bidirectional lead screw 1003 is fixedly connected in the second mounting groove 1002. Both clamping blocks 1006 are slidably connected to the second guide rod 1005.

[0039] Those skilled in the art will understand that rotating the knob 1004 drives the bidirectional lead screw 1003 to rotate, and the bidirectional lead screw 1003 drives the two clamping blocks 1006 to slide towards each other along the second guide rod 1005. The arc-shaped groove of the clamping block 1006 contacts and clamps the connecting rod 8, fixing the position of the connecting rod 8 and preventing the lead screw 7 from loosening.

[0040] The fastening assembly 10, through the cooperation of the bidirectional lead screw 1003 and the clamping block 1006, reliably fixes the connecting rod 8, ensuring that the pressure plate 12 maintains a stable clamping force during processing, preventing the fuel pipe from shifting due to loose clamping, and improving processing accuracy.

[0041] Example 5

[0042] Furthermore, a rough surface 22 is provided on the connecting rod 8 at the position corresponding to the clamping block 1006, and the clamping surface of the clamping block 1006 is provided with an arc-shaped groove that matches the connecting rod 8, and an anti-slip pad 23 is provided in the arc-shaped groove.

[0043] Those skilled in the art will understand that the rough surface 22 on the connecting rod 8 contacts the anti-slip pad 23 in the arc groove of the clamping block 1006, thereby increasing the friction to prevent slippage between the clamping block 1006 and the connecting rod 8.

[0044] The rough surface 22 and the anti-slip pad 23 enhance the reliability of the clamping assembly, ensuring that the fastening assembly 10 will not loosen due to external force when clamped, and further improve the stability and clamping accuracy of the fixture.

[0045] Example 6

[0046] Furthermore, the positioning component 13 includes a fixing block 1301 fixedly connected to one side of the sliding seat 5. A vertically arranged clamping screw 1302 is threaded onto the fixing block 1301. The bottom end of the clamping screw 1302 can be clamped against the horizontal plate of the L-shaped base 1 to fix the position of the sliding seat 5.

[0047] Those skilled in the art will understand that by tightening the locking screw 1302, its bottom end is pressed against the horizontal plate of the L-shaped base 1, and the sliding seat 5 is fixed on the trapezoidal slide rail 4 by friction, thus preventing the sliding seat 5 from moving during the processing.

[0048] The positioning component 13 can quickly fix the position of the sliding seat 5, ensuring that the clamping point remains stable after adjustment, avoiding deviation in the processing position of the fuel pipe due to displacement of the sliding seat 5, and improving processing accuracy and efficiency.

[0049] Example 7

[0050] Furthermore, the limiting component 14 includes a sliding cavity 1401 opened inside the vertical plate of the L-shaped base 1. A horizontally arranged limiting rod 1402 is movably inserted into the sliding cavity 1401. The limiting rod 1402 and the trapezoidal slide rail 4 are located on the same horizontal plane. A pressure ring 1403 located inside the sliding cavity 1401 is fixedly connected to the limiting rod 1402. A spring 1404 located in front of the pressure ring 1403 is sleeved on the limiting rod 1402. The front end of the limiting rod 1402 extends to the outside of the L-shaped base 1 and is fixedly connected to a pull ring 1405. The rear end of the limiting rod 1402 extends to the outside of the L-shaped base 1 to limit the sliding seat 5.

[0051] Those skilled in the art will understand that when it is necessary to remove the sliding seat 5, pulling the pull ring 1405 will move the limiting rod 1402 forward, compressing the spring 1404, causing the rear end of the limiting rod 1402 to move forward a small distance, so that the rear end of the limiting rod 1402 does not affect the sliding seat 5 from sliding off the trapezoidal slide rail 4.

[0052] In addition, in the locked state, when the pull ring 1405 is released, the spring 1404 returns to its original position and pushes the pressure ring 1403, causing the limit rod 1402 to move backward, so that the rear end of the limit rod 1402 limits the sliding seat 5 and prevents the sliding seat 5 from falling off the slide rail.

[0053] Example 8

[0054] Furthermore, the front and rear sides of the vertical plate of the L-shaped base 1 are fixedly connected with a fixing ring 24 coaxial with the sliding cavity 1401, and the inner ring of the fixing ring 24 is evenly distributed with bristles 25 that are compatible with the limiting rod 1402.

[0055] As will be understood by those skilled in the art, when the limiting rod 1402 moves within the sliding cavity 1401, the bristles 25 of the inner ring of the fixing ring 24 contact the surface of the limiting rod 1402, preventing dust, debris and other impurities from entering the sliding cavity 1401, preventing impurities from jamming the limiting rod 1402, ensuring the normal operation of the limiting assembly 14, and extending the service life of the limiting assembly 14 through the dustproof function.

[0056] The working principle and usage procedure of this device are as follows: First, place the fuel pipe body 3 in the placement groove 2 at the top of the horizontal plate of the L-shaped base 1. Based on the length of the fuel pipe, push the two sliding seats 5 through the trapezoidal groove 11 onto the trapezoidal slide rail 4. Adjust to a suitable position, then tighten the clamping screw 1302 of the positioning component 13 to make its bottom end press against the horizontal plate of the L-shaped base 1 to fix the position of the sliding seat 5. Then, rotate the handwheel 9 to drive the lead screw 7 to rotate through the connecting rod 8, causing the pressure plate 12 to move down along the first guide rod 21. Use the first flexible pad 19 in the limiting groove 18 and the second flexible pad 20 in the placement groove 2 to press the fuel pipe body 3. Finally, rotate the knob 1004 of the fastening component 10 to drive the clamping block 1006 to slide along the second guide rod 1005 through the bidirectional lead screw 1003, clamping the connecting rod 8 to fix the position of the lead screw 7. Processing operations can then be performed.

[0057] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A tooling fixture for processing fuel pipes, comprising an L-shaped base (1), characterized in that, The L-shaped base (1) has a placement groove (2) on the top of the horizontal plate, and a fuel pipe body (3) is placed in the placement groove (2). A trapezoidal slide rail (4) is fixedly connected to the rear side of the vertical plate of the L-shaped base (1). Two sliding seats (5) are provided above the horizontal plate of the L-shaped base (1). A trapezoidal groove (11) that matches the trapezoidal slide rail (4) is provided on the front side of the sliding seat (5). The sliding seat (5) is slidably mounted on the trapezoidal slide rail (4) through the cooperation of the trapezoidal groove (11). A first mounting groove (6) is provided on the sliding seat (5). A vertically arranged screw (7) is rotatably connected in the first mounting groove (6). A pressure plate (12) for pressing the fuel pipe body (3) is threaded on the screw (7). A plurality of first guide rods (21) parallel to the lead screw (7) are fixedly connected in the first mounting groove (6). The first guide rods (21) are slidably connected to the pressure plate (12). The top end of the lead screw (7) extends to the top of the sliding seat (5) and is integrally formed with a connecting rod (8). A handwheel (9) is fixedly connected to the top end of the connecting rod (8). A fastening assembly (10) for fastening the connecting rod (8) is provided on the top of the sliding seat (5). A positioning assembly (13) is provided on one side of the sliding seat (5) near the bottom. A limit assembly (14) is provided inside the vertical plate of the L-shaped base (1) near the right end. A limit block (15) is fixedly connected to the rear side of the vertical plate of the L-shaped base (1) near the left end.

2. The tooling fixture for processing fuel pipes according to claim 1, characterized in that, The L-shaped base (1) is fixedly connected to mounting plates (16) at both ends, and mounting holes (17) are provided on the mounting plates (16).

3. The tooling fixture for processing fuel pipes according to claim 1, characterized in that, The bottom of the pressure plate (12) is provided with a limiting groove (18) corresponding to the placement groove (2), a first flexible pad (19) is provided in the limiting groove (18), and a second flexible pad (20) is provided in the placement groove (2).

4. The tooling fixture for processing fuel pipes according to claim 1, characterized in that, The fastening assembly (10) includes a mounting block (1001) fixedly connected to the top of the sliding seat (5). The mounting block (1001) has a second mounting groove (1002). A horizontally arranged bidirectional lead screw (1003) is rotatably connected in the second mounting groove (1002). Two clamping blocks (1006) for clamping the connecting rod (8) are threadedly connected to the bidirectional lead screw (1003). The top end of the bidirectional lead screw (1003) extends to the outside of the mounting block (1001) and is fixedly connected to a knob (1004). A second guide rod (1005) parallel to the bidirectional lead screw (1003) is fixedly connected in the second mounting groove (1002). Both clamping blocks (1006) are slidably connected to the second guide rod (1005).

5. The tooling fixture for processing fuel pipes according to claim 4, characterized in that, The connecting rod (8) has a rough surface (22) at the position corresponding to the clamping block (1006). The clamping surface of the clamping block (1006) has an arc groove that matches the connecting rod (8). An anti-slip pad (23) is provided in the arc groove.

6. The tooling fixture for processing fuel pipes according to claim 1, characterized in that, The positioning component (13) includes a fixing block (1301) fixedly connected to one side of the sliding seat (5). A vertically arranged clamping screw (1302) is threaded onto the fixing block (1301). The bottom end of the clamping screw (1302) can be pressed against the horizontal plate of the L-shaped base (1) to fix the position of the sliding seat (5).

7. The tooling fixture for processing fuel pipes according to claim 1, characterized in that, The limiting component (14) includes a sliding cavity (1401) opened inside the vertical plate of the L-shaped base (1). A horizontally arranged limiting rod (1402) is movably inserted in the sliding cavity (1401). The limiting rod (1402) and the trapezoidal slide rail (4) are located on the same horizontal plane. A pressure ring (1403) located in the sliding cavity (1401) is fixedly connected to the limiting rod (1402). A spring (1404) located in front of the pressure ring (1403) is sleeved on the limiting rod (1402). The front end of the limiting rod (1402) extends to the outside of the L-shaped base (1) and is fixedly connected to a pull ring (1405). The rear end of the limiting rod (1402) extends to the outside of the L-shaped base (1) for limiting the sliding seat (5).

8. The tooling fixture for processing fuel pipes according to claim 7, characterized in that, The front and rear sides of the vertical plate of the L-shaped base (1) are fixedly connected with a fixing ring (24) coaxial with the sliding cavity (1401). The inner ring of the fixing ring (24) is evenly distributed with bristles (25) that are compatible with the limiting rod (1402).