A fixture and welding apparatus for welding low pressure fuel lines

Abstract

The application discloses a clamp for welding low-pressure fuel pipes and welding equipment. The clamp comprises a base and a support for mounting a low-pressure fuel pipe to be welded. The support is arranged on the base. The clamp further comprises a plurality of air cylinders for applying force to the assembly to be welded from corresponding directions and a pushing piece arranged on a piston of the air cylinder. The plurality of air cylinders comprises a positioning air cylinder for positioning the assembly to be welded, a plurality of pressing air cylinders for applying pressure and a plurality of pushing air cylinders for applying force. The positioning air cylinder, the pressing air cylinder and the pushing air cylinder are arranged on the base and distributed around the support. The welding equipment comprises a base frame, a mounting plate arranged on the base frame and a machine arm for welding. The mounting plate is provided with mounting holes for mounting the clamp. The machine arm is arranged at the mounting plate. The welding speed and precision can be improved, and automatic welding can be realized.

Description

[0001] This invention relates to the field of automotive parts technology, and in particular to a clamp and welding equipment for welding low-pressure fuel lines. Background Technology

[0002] The new low-pressure (U-shaped double) fuel line, with its excellent corrosion resistance and high-temperature pressure resistance, can effectively ensure stable fuel delivery and reduce the risk of fuel leakage, meeting the needs of the high-end automotive market.

[0003] Low-pressure fuel lines typically include connecting pipes, distribution pipes, and related components. Since there are usually many components, they are typically welded one by one during welding, resulting in a low welding rate and making automated welding impossible.

[0004] A few can achieve automated welding, but because the connection between the component and the tube is prone to loosening during welding, the welding accuracy is poor. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, one of the objectives of this invention is to provide a fixture for welding low-pressure fuel pipes, which can improve welding speed and accuracy and also realize automated welding.

[0006] One of the objectives of this invention is achieved through the following technical solution: A clamp for welding a low-pressure fuel pipe includes a base and a bracket for mounting the low-pressure fuel pipe to be welded. The bracket is disposed on the base. The low-pressure fuel pipe includes a connecting pipe and distribution pipes disposed at both ends of the connecting pipe. Multiple components are disposed on the distribution pipes. The clamp also includes multiple cylinders and a pressing member for applying force to the components to be welded from corresponding directions. The pressing member is disposed on the piston of the cylinder. The multiple cylinders include a positioning cylinder for positioning the components to be welded, multiple clamping cylinders for applying pressure, and multiple pushing cylinders for applying thrust. The positioning cylinder, the clamping cylinder, and the pushing cylinder are distributed around the bracket on the base.

[0007] Preferably, the low-pressure fuel line is a U-shaped dual fuel line. The assembly includes an inlet pipe, an inlet seat, a pipe connector, a support, an injector seat, and a wiring harness frame. The inlet pipe is disposed on the inlet seat. The inlet seat, the pipe connector, the support, the injector seat, and the wiring harness frame are all disposed on the distribution pipe. The distribution pipe is mounted on the bracket via the support and the injector seat.

[0008] Preferably, the clamping cylinder includes a first clamping cylinder for clamping the oil inlet pipe, a second clamping cylinder for clamping the connecting pipe, and a third clamping cylinder for clamping the distribution pipe; the pushing cylinder includes a first pushing cylinder for pushing the oil inlet seat and a second pushing cylinder for pushing the pipe joint.

[0009] Preferably, the bracket includes multiple upright plates and positioning bearings, all of which are mounted on the base. The upright plates are provided with positioning holes for installing the distribution pipe.

[0010] Preferably, the bracket further includes a first tilting platform and a second tilting platform, the pushing member is mounted on the first pressing cylinder via the first tilting platform, and the second pressing cylinder is mounted on the second tilting platform.

[0011] Preferably, the base includes a linear guide rail and a handle, the handle being disposed on the side of the base body, and the bracket being slidably connected to the base body via the linear guide rail.

[0012] The second objective of this invention is achieved by the following technical solution: A welding device equipped with the fixture, the welding device includes a base frame, a mounting plate mounted on the base frame, and a robotic arm for welding, the mounting plate being provided with mounting holes for mounting the fixture, and the robotic arm being disposed on the mounting plate.

[0013] Preferably, the welding equipment further includes a turntable and a light shield, the turntable being rotatably connected to the base frame, the light shield being disposed on the turntable, and the mounting plate being disposed on the light shield.

[0014] Preferably, the welding equipment further includes a rotating bracket, the mounting plate is mounted on the light shield via the rotating bracket, the rotating bracket includes a motor for rotation, and the motor shaft is connected to the mounting plate.

[0015] Preferably, the welding equipment further includes a positioning module for adjusting the position of the fixture. The positioning module includes a displacement sensor that can be positioned by laser scanning. The displacement sensor is mounted on the base frame and is electrically connected to the robotic arm.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The clamp for welding low-pressure fuel pipes disclosed in this application uses multiple cylinders and pushers to position and apply force in the corresponding direction to the components to be welded. This allows multiple components to be welded to be precisely pressed together at the welding point of the distribution pipe in advance, enabling the welding of multiple components at the same time, thereby improving the welding speed. During welding, because the components to be welded are pressed together at the welding point by the pushers, they are not easy to loosen, thus improving the welding accuracy.

[0017] In addition, this application also discloses a welding device equipped with the aforementioned fixture, which can achieve automated welding via the robotic arm. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the clamp of the present invention from one perspective. Figure 2 This is a three-dimensional structural schematic diagram of the clamp of the present invention from another perspective; Figure 3 This is a three-dimensional structural schematic diagram of the clamp of the present invention from another perspective; Figure 4 This is a three-dimensional structural diagram of the low-pressure fuel pipe of the present invention; Figure 5 This is a three-dimensional structural diagram of the welding equipment of the present invention.

[0019] In the diagram: 100, clamp; 10, bracket; 11, positioning bearing; 12, upright plate; 121, positioning hole; 13, first tilting platform; 14, second tilting platform; 20, base; 21, handle; 22, linear guide rail; 30, cylinder; 31, first clamping cylinder; 32, second clamping cylinder; 33, first pushing cylinder; 34, second pushing cylinder; 35, pushing component; 36, positioning cylinder; 37, third clamping cylinder; 40, low-pressure fuel pipe; 41, distribution pipe; 42, connecting pipe; 43, assembly; 431, fuel inlet pipe; 432, fuel injector seat; 433, support component; 434, wire harness frame; 435, pipe connector; 436, fuel inlet seat; 50, welding equipment; 51, base frame; 52, turntable; 53, mounting plate; 54, light shield; 55, robotic arm; 56, rotating bracket. Detailed Implementation

[0020] The present invention will now be further described with reference to the accompanying drawings and specific embodiments: In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "lateral," "longitudinal," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] like Figures 1-4As shown, the present invention discloses a fixture 100 for welding a low-pressure fuel pipe, including a base 20 and a bracket 10 for mounting a low-pressure fuel pipe 40 to be welded. The bracket 10 is disposed on the base 20. The low-pressure fuel pipe 40 includes a connecting pipe 42 and distribution pipes 41 disposed at both ends of the connecting pipe 42. Multiple components 43 are disposed on the distribution pipes 41. The fixture 100 also includes multiple cylinders 30 and a pressing member 35 for applying force to the components 43 to be welded from corresponding directions. The pressing member 35 is disposed on the piston of the cylinder 30. The multiple cylinders 30 include a positioning cylinder 30 for positioning the components 43 to be welded, multiple clamping cylinders for applying pressure, and multiple pushing cylinders for applying thrust. The positioning cylinder 30, the clamping cylinder, and the pushing cylinder are distributed around the bracket 10 on the base 20.

[0022] The clamp 100 for welding low-pressure fuel pipes disclosed in this application uses multiple cylinders and a pusher to position and apply force to the components 43 to be welded in the corresponding directions. This allows multiple components 43 to be precisely pressed into place at the welding point of the distribution pipe 41 in advance, enabling multiple components 43 to be welded together, thereby increasing the welding speed. During welding, because the components to be welded are pressed into place at the welding point by the pusher, they are not easy to loosen, thus improving the welding accuracy.

[0023] The connecting pipe 42 is connected to the distribution pipe 41, which is used to distribute fuel. The cylinder 30 can press the component to be welded onto the welding point of the distribution pipe by applying force through the pushing member. The pushing member 35 can also be slidably connected to the cylinder. Multiple cylinders 30 can apply force to the component 43 from multiple directions, which can make the component 43 fit more accurately with the welding point of the distribution pipe 41.

[0024] like Figures 1-4 As shown, in a preferred embodiment, the low-pressure fuel line 40 is a U-shaped dual fuel line. The assembly 43 includes an inlet pipe 431, an inlet seat 436, a pipe connector 435, a support member 433, an injector seat 432, and a wiring harness frame 434. The inlet pipe 431 is disposed on the inlet seat 436. The inlet seat 436, the pipe connector 435, the support member 433, the injector seat 432, and the wiring harness frame 434 are all disposed on the distribution pipe 41. The distribution pipe 41 is mounted on the bracket 10 through the support member 433 and the injector seat 432. Preferably, the clamping cylinder includes a first clamping cylinder 31 for clamping the oil inlet pipe 431, a second clamping cylinder 32 for clamping the connecting pipe 42, and a third clamping cylinder 37 for clamping the distribution pipe 41. The pushing cylinder includes a first pushing cylinder for pushing the oil inlet seat 436 and a second pushing cylinder for pushing the pipe joint 435.

[0025] In the above embodiment, the fuel inlet pipe 431 is used to supply fuel to the distribution pipe 41. The fuel inlet pipe 431 is mounted on the distribution pipe 41 via the fuel inlet seat 436. The pipe connector 435 is used to connect a sensor. The support member 433 is used to mount the distribution pipe 41. The injector seat 432 is used to inject fuel. The wire harness frame 434 is used to mount wiring. The fuel inlet pipe 431 and the connecting pipe 42 are positioned on the distribution pipe 41 by the clamping cylinder. The fuel inlet seat 436 and the pipe connector 435 are both positioned on the distribution pipe 41 by the pushing cylinder. The wire harness frame 434 is positioned on the distribution pipe 41 by the positioning cylinder. It can be understood that the cylinder 30 may further include a third clamping cylinder 37 for clamping the distribution pipe 41, and the third clamping cylinder 37 is disposed on the base 20.

[0026] like Figures 1-3 As shown, in a preferred embodiment, the bracket 10 includes multiple upright plates 12, positioning bearings 11, a first tilting platform 13, and a second tilting platform 14. The multiple upright plates 12 and the positioning bearings 11 are all mounted on the base 20. The upright plates 12 are provided with positioning holes 121 for mounting the distribution pipe 41. A pushing member 35 is mounted on the first pressing cylinder 33 via the first tilting platform 13, and a second pressing cylinder 34 is mounted on the second tilting platform 14. Preferably, the base 20 includes a linear guide rail 22 and a handle 21. The handle 21 is located on the side of the base 20 body, and the upright plates 12 are slidably connected to the base body via the linear guide rail 22.

[0027] In the above embodiment, the positioning hole 121 on the upright plate 12 can be used to install the injector seat 432, and the positioning bearing 11 can position the bracket 10. Because the weld on the distribution pipe 41 is not necessarily horizontal, the first tilting table 13 and the second tilting table 14 can respectively allow the pushing member 35 to push the component 43 to be welded from a suitable angle, thereby making the component to be welded more stable. The linear guide rail 22 allows (partial) the upright plate 12 on the bracket to slide, which is conducive to adjusting the position of (partial) cylinder 30, and the handle 21 is conducive to moving the clamp 100.

[0028] like Figure 5 As shown, the present invention also discloses a welding device 50 provided with the fixture 100. The welding device 50 includes a base frame 51, a mounting plate 53 provided on the base frame 51, and a robotic arm 55 for welding. The mounting plate 53 is provided with mounting holes (not shown) for mounting the fixture 100, and the robotic arm 55 is provided at the mounting plate 53.

[0029] In this embodiment, the mounting holes on the mounting plate 53 facilitate the installation of the clamp 100. The robotic arm 55 can be controlled by a controller. A welding torch can be installed on the robotic arm 55. The welding equipment 50 can weld low-pressure fuel pipes (low-pressure fuel pipe 40) through the welding torch on the robotic arm.

[0030] like Figure 5 As shown, in a preferred embodiment, the welding equipment 50 further includes a rotating bracket 56, a turntable 52, and a light-shielding plate 54. The turntable 52 is rotatably connected to the base frame 51. The light-shielding plate 54 is disposed on the turntable 52, and the mounting plate 53 is disposed on the light-shielding plate 54. The mounting plate 53 is mounted on the light-shielding plate 54 via the rotating bracket 56. The rotating bracket 56 includes a motor for rotation, and the motor shaft is connected to the mounting plate 53.

[0031] In the above embodiment, the turntable 52 enables the mounting plate 53 to rotate in the horizontal (plane) direction, and the motor enables the rotating bracket 56 to drive the mounting plate 53 to rotate, thereby allowing the mounting plate 53 to rotate in the vertical (plane) direction. This allows for comprehensive adjustment of the position of the fixture 100, which is more conducive to welding. The light-shielding plate 54 can filter harmful light generated during welding, thus reducing light pollution.

[0032] In a preferred embodiment, the welding equipment 50 further includes a positioning module for adjusting the position of the fixture 100. The positioning module includes a displacement sensor that can be positioned by laser scanning. The displacement sensor is mounted on the base frame 51 and is electrically connected to the robotic arm 55.

[0033] In the above embodiment, the displacement sensor can scan the precise position of the fixture 100 with a laser and send the precise position information to the robotic arm 55, so that the robotic arm 55 can accurately weld the low-pressure fuel pipe 40 on the fixture 100.

[0034] In summary, the clamp for welding low-pressure fuel pipes disclosed in this application uses multiple cylinders to push the components 43 to be welded from appropriate directions, so that the multiple components 43 can be more accurately and stably attached to the welding joint on the distribution pipe 41, thereby improving welding speed, accuracy and realizing automated welding.

[0035] For those skilled in the art, various other corresponding changes and modifications can be made based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims of this invention.

Claims

1. A clamp for welding a low-pressure fuel pipe, comprising a base and a bracket for mounting the low-pressure fuel pipe to be welded, the bracket being disposed on the base, the low-pressure fuel pipe comprising a connecting pipe and distribution pipes disposed at both ends of the connecting pipe, the distribution pipes being provided with a plurality of components, characterized in that: The fixture also includes a plurality of cylinders and a pressing component that apply force to the component to be welded from a corresponding direction. The pressing component is disposed on the piston of the cylinder. The plurality of cylinders include a positioning cylinder for positioning the component to be welded, a plurality of clamping cylinders for applying pressure, and a plurality of pushing cylinders for applying thrust. The positioning cylinder, the clamping cylinder, and the pushing cylinder are distributed around the bracket on the base.

2. The clamp for welding low-pressure fuel lines according to claim 1, characterized in that: The low-pressure fuel line is a U-shaped dual fuel line. The assembly includes an inlet pipe, an inlet seat, a pipe connector, a support, an injector seat, and a wiring harness frame. The inlet pipe is mounted on the inlet seat. The inlet seat, the pipe connector, the support, the injector seat, and the wiring harness frame are all mounted on the distribution pipe. The distribution pipe is mounted on the bracket via the support and the injector seat.

3. The clamp for welding low-pressure fuel lines according to claim 2, characterized in that: The clamping cylinder includes a first clamping cylinder for clamping the oil inlet pipe, a second clamping cylinder for clamping the connecting pipe, and a third clamping cylinder for clamping the distribution pipe. The pushing cylinder includes a first pushing cylinder for pushing the oil inlet seat and a second pushing cylinder for pushing the pipe joint.

4. The clamp for welding low-pressure fuel lines according to claim 3, characterized in that: The bracket includes multiple upright plates and positioning bearings, all of which are mounted on the base. The upright plates are provided with positioning holes for installing the distribution pipe.

5. The clamp for the low-pressure fuel line according to claim 4, characterized in that: The bracket also includes a first tilting platform and a second tilting platform. The pushing member is mounted on the first pressing cylinder via the first tilting platform, and the second pressing cylinder is mounted on the second tilting platform.

6. The clamp for welding low-pressure fuel lines according to claim 1, characterized in that: The base includes a linear guide rail and a handle. The handle is located on the side of the base body, and the bracket is slidably connected to the base body through the linear guide rail.

7. A welding apparatus equipped with a fixture according to any one of claims 1-6, characterized in that: The welding equipment includes a base frame, a mounting plate mounted on the base frame, and a robotic arm for welding. The mounting plate is provided with mounting holes for mounting the fixture, and the robotic arm is mounted on the mounting plate.

8. The welding equipment according to claim 7, characterized in that: The welding equipment also includes a turntable and a light shield. The turntable is rotatably connected to the base frame, the light shield is disposed on the turntable, and the mounting plate is disposed on the light shield.

9. The welding equipment according to claim 8, characterized in that: The welding equipment also includes a rotating bracket, and the mounting plate is mounted on the light shield via the rotating bracket. The rotating bracket includes a motor for rotation, and the motor shaft is connected to the mounting plate.

10. The welding equipment according to claim 9, characterized in that: The welding equipment also includes a positioning module for adjusting the position of the fixture. The positioning module includes a displacement sensor that can be positioned by laser scanning. The displacement sensor is mounted on the base frame and is electrically connected to the robotic arm.

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