Continuous bending device for fuel guide pipe of aero-engine

Abstract

The utility model discloses an aero-engine fuel duct continuous bending device which comprises an equipment rack, a linear feeder is arranged on one side of the equipment rack, a chuck is arranged at the end of the linear feeder, and a bending structure is arranged on the side, corresponding to the chuck, of the equipment rack. The utility model relates to the technical field of aero-engine machining, in particular to a continuous bending device for an aero-engine fuel guide pipe, in the bending process of a pipe bending machine, a pipe fitting is clamped by a bending fixing die and a bending clamping die together to be bent, and in order to avoid interference between the bending clamping die and the pipe fitting in the bending process, the bending fixing die and the bending clamping die are clamped by the bending fixing die and the bending clamping die. The bending clamping die is designed to be of a small lifting structure, small-amplitude lifting of the pipe bending clamping die can be adjusted, and interference between the pipe bending clamping die and a pipe fitting is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of aero-engine processing, in particular to a continuous bending device for a fuel pipe of an aero-engine. Background Art

[0002] Aircraft engines are the power core of modern spacecraft. The structure of modern aircraft engines is mainly a turbofan structure, and they mostly use aviation fuel as fuel. The fuel supply of modern aircraft engines is mostly provided through fuel ducts.

[0003] Due to the dense arrangement of various pipelines on aircraft engines and the limited space in aircraft, in order to fit the external structure of the aircraft engine as closely as possible, most of the current aircraft engine fuel pipes need to be bent continuously. However, during the continuous bending process of the aircraft engine fuel pipes, most bending molds use a fixed structure for clamping. However, when the bending angle of the fuel pipe is large, the bent part of the fuel pipe will interfere with one side of the bending fixture, affecting the bending accuracy of the fuel pipe, or causing damage to the fuel pipe, affecting the quality of the finished product. In view of this, in-depth research was conducted on the above-mentioned issues, which led to the creation of this case. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a continuous bending device for an aviation engine fuel pipe, which solves the problems of the prior art.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A continuous bending device for an aircraft engine fuel pipe comprises an equipment frame, a linear feeder is provided on one side of the equipment frame, a chuck is provided at the end of the linear feeder, and a bending structure is provided on the side of the equipment frame corresponding to the chuck;

[0006] The bending structure includes a bending shaft, which is assembled on the equipment frame, a bending driving member is connected to the bottom of the bending shaft, a bending fixed mold is assembled on the bending shaft, a lifting seat is arranged on one side of the bending shaft, a height adjustment cylinder is arranged at the bottom of the lifting seat, and a pushing guide rail is assembled on the lifting seat and connected to the telescopic end of the height adjustment cylinder;

[0007] The pushing guide rail is equipped with a pushing block, and the pushing block is provided with a bending clamping mold, and the bending clamping mold corresponds to the bending fixing mold;

[0008] The bending and clamping mold includes a fixed seat, which is connected to the pushing block. A clamping seat is provided on one side of the fixed seat. A pair of guide grooves are opened on the fixed seat. A pair of guide blocks are provided on the clamping seat to match the pair of guide grooves. A rack is provided on one of the guide blocks. A gear set is provided on one side of the guide groove to engage with the rack. A control motor is provided on the fixed seat to connect with the gear set.

[0009] Preferably, the bending and fixing mold and the corresponding sides of the clamping seat are provided with semicircular grooves with matching diameters.

[0010] Preferably, a pressure mold is provided on the equipment frame on one side of the axis of the chuck.

[0011] Preferably, the end of the bending shaft is connected to a fixing rod, and the bending fixing mold is provided with a mounting groove corresponding to the fixing rod.

[0012] Preferably, the mounting groove is sleeved outside the fixing rod, and the end of the fixing rod is connected to a limiting nut to fix the bending fixing mold. Beneficial effects

[0013] The utility model provides a continuous bending device for aircraft engine fuel pipes. The device has the following beneficial effects: During the bending process of a pipe bender, a fixed bending die and a bending clamping die jointly clamp the pipe for bending. To prevent interference between the bending clamping die and the pipe during the bending process, the bending clamping die adopts a small lifting structure design. This allows for small adjustments to the bending clamping die to avoid interference with the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The present invention is a schematic diagram of the three-dimensional structure of a continuous bending device for an aviation engine fuel pipe.

[0015] Figure 2 The present invention is a schematic diagram of a partial three-dimensional structure of a continuous bending device for an aircraft engine fuel pipe.

[0016] Figure 3 The present invention is a partial cross-sectional structural diagram of a continuous bending device for an aviation engine fuel pipe.

[0017] In the figure: 1. Equipment frame; 2. Linear feeder; 3. Chuck; 4. Bending shaft; 5. Bending drive member; 6. Bending fixed mold; 7. Lifting seat; 8. Height adjustment cylinder; 9. Pushing guide rail; 10. Pushing block; 11. Bending clamping mold; 12. Pressure mold; 111. Fixed seat; 112. Clamping seat; 113. Guide groove; 114. Guide block; 115. Rack; 116. Control motor; 117. Gear set. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-3 The utility model provides an implementation scheme: In the production process of modern aircraft engines, the fuel pipe of the aircraft engine is responsible for supplying fuel to the aircraft engine. In order to save space in the aircraft engine, the fuel pipe needs to be bent continuously. At the current stage, the continuous bending machine will cause damage to the fuel pipe at the end of the bend due to the increase in the number of continuous bendings when bending.

[0020] According to the instruction manual Figure 1-3 It can be seen that in response to the above problems, the present application discloses a continuous bending device for an aircraft engine fuel pipe, comprising an equipment frame 1, the equipment frame 1 serving as a support and mounting body for a continuous pipe bender, a linear feeder 2 being provided on one side of the equipment frame 1, the linear feeder 2 being a hollow hydraulic telescopic rod, a chuck 3 being provided at the end of the linear feeder 2, the pipe to be bent being inserted into the chuck 3 and the linear feeder 2, and being transported to one side of the bending structure under the action of the linear feeder 2, while the linear feeder 2 has a rotating function, which can drive the pipe to rotate axially and adjust the bending angle, a bending structure being provided on the side of the equipment frame 1 corresponding to the chuck 3, and the bending structure bends the pipe according to the design of the bending angle;

[0021] According to the instruction manual Figure 1-3 It can be seen that the above-mentioned bending structure includes a bending shaft 4, which is assembled on the equipment frame 1, and a bending driving member 5 is connected to the bottom of the bending shaft 4. A bending fixed mold 6 is assembled on the bending shaft 4. A lifting seat 7 is provided on one side of the bending shaft 4, and a height adjustment cylinder 8 is provided at the bottom of the lifting seat 7. A pushing guide rail 9 is assembled on the lifting seat 7 and connected to the telescopic end of the height adjustment cylinder 8;

[0022] In the specific implementation process, the bending shaft 4 serves as the power axis of the bending pipe. The bending driving member 5 can drive the bending shaft 4 to rotate, and then the bending shaft 4 drives the bending fixed mold 6 to rotate. A lifting seat 7 is provided on the radial side of the bending shaft 4. The lifting seat 7 is used to limit the installation of the pushing guide rail 9. The movement of the pushing guide rail 9 can be adjusted by the height adjustment cylinder 8. The lifting seat 7 and the height adjustment cylinder 8 constitute a lifting device for adjusting the height of the pushing guide rail 9.

[0023] Furthermore, a pushing block 10 is mounted on the pushing guide rail 9. A bending clamping die 11 is provided on the pushing block 10. The bending clamping die 11 corresponds to the bending fixed die 6. The horizontal position of the pushing block is controlled by the pushing guide rail 9, and the horizontal position of the bending clamping die 11 is synchronously controlled so that the bending clamping die 11 clamps the other side of the pipe fitting to achieve clamping of the pipe fitting.

[0024] Furthermore, the bending and clamping mold 11 includes a fixed base 111, which is connected to the pushing block 10. A clamping base 112 is provided on one side of the fixed base 111. A pair of guide grooves 113 are provided on the fixed base 111. A pair of guide blocks 114 are provided on the clamping base 112 to match the pair of guide grooves 113. A rack 115 is provided on one guide block 114. A gear set 117 is provided on one side of the guide groove 113 to mesh with the rack 115. A control motor 116 is provided on the fixed base 111 and connected to the gear set 117.

[0025] In the specific implementation process, the fixed seat 111 is connected to the pushing block 10, and the fixed seat 111 is used as the installation basis of the bending clamping die 11. The matching of a pair of guide grooves 113 and a pair of guide blocks 114 plays a guiding role on the clamping seat 112. By controlling the position of the pushing block 10, the clamping block and the bending fixed die 6 are relatively clamped to the pipe to be bent, and then the bending driving member 5 is used to drive the bending fixed die 6 and the bending clamping die 11 to rotate synchronously to complete the bending of the pipe. In the second half of the continuous bending, due to the increase in the bending angle, many times the bending The folded pipe will bend back to point to the side of the bending clamping die 11. At this time, in order to avoid interference between the fixed seat 111 and the pipe when bending again, the overall height of the bending clamping die 11 is lowered by the height-adjusting cylinder 8. The motor 116 is controlled to drive the gear set 117 to rotate, so that the gear set 117 is engaged with the rack 115, and the height of the clamping seat 112 is raised to compensate for the height lowered by the height-adjusting cylinder 8. Since the clamping seat 112 is relatively thin and small in size, only the part where the clamping seat 112 acts is at the same level as the pipe, avoiding interference with the pipe.

[0026] As a preferred solution, further, the corresponding sides of the bending and fixing mold 6 and the clamping seat 112 are provided with semicircular grooves with matching diameters to facilitate clamping of the pipe.

[0027] As a preferred solution, further, a pressure die 12 is provided on the equipment frame 1 on one side of the axis of the chuck 3, which plays a role in guiding and limiting the pipe during the bending process.

[0028] As a preferred solution, further, the end of the bending shaft 4 is connected to a fixing rod, and the bending fixing mold 6 is provided with a mounting groove corresponding to the fixing rod.

[0029] As a preferred solution, further, the mounting groove is provided outside the fixing rod, and the end of the fixing rod is connected to a limiting nut to fix the bending fixing mold 6. The bending fixing mold 6 and the bending clamping mold 11 can be removed from the equipment to facilitate replacement of molds that match pipe bending of different sizes and diameters.

[0030] From the above, it can be generally known that the continuous bending device of the aircraft engine fuel pipe, during the bending process of the pipe bending machine, clamps the pipe fittings together through the bending fixed mold 6 and the bending clamping mold 11 for bending. In order to avoid interference between the bending clamping mold 11 and the pipe fittings during the bending process, the bending clamping mold 11 adopts a small lifting structure design, which can adjust the small lifting and lowering of the bending clamping mold to avoid interference with the pipe fittings.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A continuous bending device for an aircraft engine fuel pipe, comprising an equipment frame (1), a linear feeder (2) being provided on one side of the equipment frame (1), a chuck (3) being provided at the end of the linear feeder (2), and characterized in that: A bending structure is provided on one side of the equipment frame (1) corresponding to the clamping disc (3); The bending structure includes a bending shaft (4), the bending shaft (4) is mounted on the equipment frame (1), the bottom of the bending shaft (4) is connected to a bending driving member (5), the bending shaft (4) is equipped with a bending fixed mold (6), a lifting seat (7) is provided on one side of the bending shaft (4), a height adjustment cylinder (8) is provided at the bottom of the lifting seat (7), and a pushing guide rail (9) is equipped on the lifting seat (7) and connected to the telescopic end of the height adjustment cylinder (8); The pushing guide rail (9) is equipped with a pushing block (10), and the pushing block (10) is provided with a bending clamping mold (11), and the bending clamping mold (11) corresponds to the bending fixing mold (6); The bending clamping mold (11) includes a fixed seat (111), the fixed seat (111) is connected to the pushing block (10), a clamping seat (112) is provided on one side of the fixed seat (111), a pair of guide grooves (113) are provided on the fixed seat (111), a pair of guide blocks (114) are provided on the clamping seat (112) and match the pair of guide grooves (113), a rack (115) is provided on one of the guide blocks (114), a gear set (117) is provided on one side of the guide groove (113) and meshes with the rack (115), and a control motor (116) is provided on the fixed seat (111) and connected to the gear set (117).

2. The continuous bending device for an aircraft engine fuel pipe according to claim 1, characterized in that: The bending and fixing mold (6) and the corresponding side of the clamping seat (112) are provided with semicircular grooves with matching diameters.

3. The continuous bending device for an aircraft engine fuel pipe according to claim 2, characterized in that: A pressure mold (12) is provided on the equipment frame (1) on one side of the axis of the chuck (3).

4. The continuous bending device for an aircraft engine fuel pipe according to claim 3, characterized in that: The end of the bending shaft (4) is connected to a fixing rod, and a mounting groove is provided on the bending fixing mold (6) corresponding to the fixing rod.

5. The continuous bending device for an aircraft engine fuel pipe according to claim 4, characterized in that: The mounting groove is sleeved outside the fixing rod, and the end of the fixing rod is connected to a limiting nut to fix the bending fixing mold (6).

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