Welding fixture for the intake and exhaust pipes and support of the drone engine muffler

Abstract

This utility model relates to a welding fixture for the intake and exhaust pipes and supports of a drone engine muffler, comprising a base plate, a cylinder positioning system, a support positioning system, an intake pipe positioning system, and an exhaust pipe positioning system. The base plate is rectangular, and cylinder supports and intake pipe supports are mounted on it. The cylinder positioning system includes a support plate I and an end plate. The support plate I is fixed to the left side of the base plate, and the end plate is disc-shaped and fixed inside the support plate I. The inner surface of the end plate has a convex-concave structure that matches the right end cap of the cylinder. The support positioning system includes a fixed seat, a sliding seat, a cylinder I, and a positioning post I. The intake pipe positioning system includes a support plate III, a cylinder II, a flange positioning plate, and a positioning post II. The exhaust pipe positioning system includes a support plate IV, a cylinder III, and a positioning post III. The beneficial technical effect of this utility model is that it simultaneously positions and clamps the intake and exhaust pipes, supports, and cylinder in one operation, simplifying the operation and effectively ensuring welding quality.

Description

Technical Field

[0001] This utility model relates to a welding technology for the intake and exhaust pipes and supports of a drone engine muffler, and particularly to a welding fixture for the intake and exhaust pipes and supports of a drone engine muffler. Background Technology

[0002] After the muffler body is manufactured, the intake and exhaust pipes and supports of the UAV engine muffler need to be welded onto the body. The intake pipe is an irregularly shaped pipe with a three-dimensional curve along its entire axis; one end is welded to a flange, and the other end is welded into the intake hole on the body. During welding, the flange plane must be at a set angle α to the vertical plane, and the line connecting the flange bolt holes must be at a set angle β to the horizontal plane (at this time, the body axis is in the vertical plane and the exhaust hole axis is parallel to the horizontal plane). The muffler support is an L-shaped structure, welded to one end face of the body, and the bolt hole support plate of the support must be perpendicular to the body axis and spaced a set distance from the body axis. Existing UAV engine muffler welding methods for intake and exhaust pipes and supports use three sets of simple clamps to hold the body and the intake / exhaust pipes and supports in set positions, and then weld them one by one. This is not only cumbersome but also makes it difficult to ensure that each component is welded in the set position with the set posture.

[0003] Clearly, the existing welding methods for the intake and exhaust pipes and supports of drone engine mufflers have problems such as complicated operation and difficulty in ensuring that each component is welded in the set position with the set posture. Summary of the Invention

[0004] To address the problems of complex operation and difficulty in ensuring that each component is welded in the set position and posture in the existing welding methods for the intake and exhaust pipes and supports of UAV engine mufflers, this utility model proposes a welding fixture for the intake and exhaust pipes and supports of UAV engine mufflers.

[0005] This utility model relates to a welding fixture for the intake and exhaust pipes and supports of a drone engine muffler, comprising a base plate, a cylinder positioning system, a support positioning system, an intake pipe positioning system, and an exhaust pipe positioning system. The base plate is rectangular, and a cylinder support and an intake pipe support are mounted on it. Two cylinder supports are spaced apart in the middle of the base plate, with an arc-shaped notch above each support matching the outer diameter of the cylinder. The intake pipe support is elongated and positioned next to the left side of the cylinder support plate, with an arc-shaped notch on its inner side matching the outer diameter of the cylinder, and an arc-shaped notch on its front side matching the edge of the intake port on the cylinder. When the fixed position and height of the intake pipe support are based on the cylinder, the arc-shaped notch on the front of the intake pipe support... The notch is aligned with the edge of the air inlet on the cylinder body; the cylinder positioning includes: support plate I and end plate; support plate I is fixed to the left side of the base plate, and the end plate is disc-shaped and fixed inside support plate I, with a convex and concave structure matching the right end cap of the cylinder body on its inner surface; furthermore, the axis of the end plate is coaxial with the arc notch on the cylinder support; the support positioning includes: fixed seat, slide, cylinder I and positioning column I; the fixed seat is fixed to the right side of the base plate and is spaced a set distance from the axis of the arc notch on the cylinder support; a slide rail is provided on the surface of the fixed seat, and support plate II extends upward from the outer side; the slide is L-shaped, with the horizontal side mounted on the slide rail and positioning column I provided on the inner side of the vertical side; the positioning column I... The spacing and interval match the through holes on the support; the piston of cylinder I is fixed inward on the outside of support plate II; the installation position and height of the slide are such that, with the cylinder as the set position, the two through holes on the support are fitted onto positioning post I, and the support is moved forward by the slide to make tight contact with the cylinder end cover, the position of the support meets the design requirements; the air inlet pipe positioning includes: support plate III, cylinder II, flange positioning plate and positioning post II; support plate III is fixed on the front side of the base plate; the piston of cylinder II is fixed inward on support plate III; the shape of the flange positioning plate matches the air inlet pipe flange, and the front end is provided with a cylindrical step with a diameter matching the inner hole of the flange, and is fixed to the piston end of cylinder II; the positioning post II is fixed to the flange positioning plate. The size and spacing of the two sides of the cylindrical step are the same as the bolt holes of the intake pipe flange; the fixed position and height of the flange positioning plate are such that after the piston of cylinder II extends to the working position, the surface of the flange positioning plate is perpendicular to the vertical plane of the arc notch of the cylinder support at an angle of α, and the line connecting the positioning pins II is perpendicular to the horizontal plane at an angle of β; the exhaust pipe positioning includes: support plate IV, cylinder III and positioning pin III; support plate IV is fixed to the rear side of the base plate; the piston of cylinder III is fixed forward on support plate IV; positioning pin III is fixed to the piston end of cylinder III, and a step matching the exhaust pipe is provided at the front end of positioning pin III; the fixed position and height of positioning pin III are such that when the cylinder is the set position, the axis of positioning pin III is coaxial with the exhaust hole on the cylinder;The set position of the cylinder refers to the position of the cylinder when it is placed within the arc notch on the cylinder support, with the right end cap of the cylinder in close contact with the end plate of the cylinder positioning, and the axis of the exhaust hole on the cylinder parallel to the horizontal plane; the working position of the piston of cylinder II refers to the position of the piston of cylinder II when the cylinder is in the set position, one end of the air inlet pipe is placed in the air inlet hole on the cylinder, and the other end is placed on the flange positioning plate at the end of the piston of cylinder II, and the bolt hole of the air inlet pipe flange is just fitted onto the positioning post II.

[0006] Furthermore, each of the support plates I to IV is provided with a triangular support on its back side.

[0007] The beneficial technical effect of this utility model of welding fixture for the intake and exhaust pipes and support of UAV engine muffler is that it can simultaneously position and clamp the intake and exhaust pipes and support with the cylinder body at one time, which not only simplifies the operation, but also effectively ensures the welding quality. Attached Figure Description

[0008] Appendix Figure 1 It is a three-dimensional schematic diagram of the intake and exhaust pipes and support of the drone engine muffler before and after welding;

[0009] Appendix Figure 2 This is a three-dimensional schematic diagram of the welding fixture for the intake and exhaust pipes and support of the UAV engine muffler of this utility model.

[0010] Appendix Figure 3 This is a three-dimensional schematic diagram of the present invention from another angle;

[0011] Appendix Figure 4 This is a three-dimensional schematic diagram of the welding process of this utility model.

[0012] In the diagram, a is the cylinder, b is the air inlet pipe, c is the exhaust pipe, and d is the support; 1 is the base plate, 1-1 is the cylinder support, and 1-2 is the air inlet pipe support; 2 is the cylinder positioning, 2-1 is the support plate I, and 2-2 is the end plate; 3 is the support positioning, 3-1 is the fixed seat, 3-2 is the sliding seat, 3-3 is the cylinder I, and 3-4 is the positioning post I; 4 is the air inlet pipe positioning, 4-1 is the support plate III, 4-2 is the cylinder II, 4-3 is the flange positioning plate, and 4-4 is the positioning post II; 5 is the exhaust pipe positioning, 5-1 is the support plate IV, 5-2 is the cylinder III, and 5-3 is the positioning post III.

[0013] The following description, in conjunction with the accompanying drawings and specific embodiments, further illustrates the welding fixture for the intake and exhaust pipes and support of the UAV engine muffler of this utility model. Detailed Implementation

[0014] See appendix Figure 2 , 34. The present invention relates to a welding fixture for the intake and exhaust pipes and supports of a drone engine muffler, comprising a base plate 1, a cylinder positioning 2, a support positioning 3, an intake pipe positioning 4, and an exhaust pipe positioning 5. The base plate is a rectangular plate, on which a cylinder support 1-1 and an intake pipe support 1-2 are provided. The cylinder support consists of two pieces, spaced apart in the middle of the base plate, with an arc notch above the cylinder support having a diameter matching the outer circle of the cylinder. The intake pipe support is elongated and located next to the left cylinder support plate, with an arc matching the outer circle of the cylinder on the inner side of the intake pipe support, and an arc notch on the front matching the edge of the intake hole on the cylinder. The fixed position and height of the intake pipe support are based on the cylinder. When positioned, the arc-shaped notch on the front of the intake pipe support should just contact the edge of the intake hole on the cylinder body; the cylinder body positioning includes: support plate I 2-1 and end plate 2-2; support plate I is fixed on the left side of the base plate, and the end plate is disc-shaped and fixed inside support plate I, with a convex and concave structure matching the cylinder end cap on the inner surface of the end plate; furthermore, the axis of the end plate is coaxial with the arc-shaped notch on the cylinder support; the support positioning includes: fixed seat 3-1, slide 3-2, cylinder I 3-3 and positioning column I 3-4; the fixed seat is fixed on the right side of the base plate and is spaced a set distance from the axis of the arc-shaped notch on the cylinder support; a slide is provided on the surface of the fixed seat, and support plate II extends upward on the outer side; the slide is L-shaped, with the horizontal side... Mounted on the slide rail, a positioning post I is provided on the inner side of the vertical side; the size and spacing of the positioning post I match the through holes on the support; the piston of cylinder I is fixed inward on the outer side of the support plate II; the installation position and height of the slide, with the cylinder as the set position, are such that when the two through holes on the support are fitted onto the positioning post I, and the support is moved forward by the slide to make close contact with the cylinder end cover, the position of the support meets the design requirements; the air inlet pipe positioning includes: support plate III 4-1, cylinder II 4-2, flange positioning plate 4-3 and positioning post II 4-4; support plate III is fixed on the front side of the base plate; the piston of cylinder II is fixed inward on the support plate III; the shape of the flange positioning plate matches the air inlet pipe flange, and the front end is provided with a diameter matching the inner hole of the flange. A matching cylindrical step is fixed to the piston end of cylinder II; the positioning pin II is fixed on both sides of the cylindrical step of the flange positioning plate, and its size and spacing are the same as the bolt holes of the intake pipe flange; the fixed position and height of the flange positioning plate are based on the following: after the piston of cylinder II extends to the working position, the surface of the flange positioning plate is perpendicular to the vertical plane of the arc notch of the cylinder support at an angle of α, and the line connecting the positioning pins II is perpendicular to the horizontal plane at an angle of β; the exhaust pipe positioning includes: support plate IV 5-1, cylinder III 5-2 and positioning pin III 5-3; support plate IV is fixed to the rear side of the base plate; the piston of cylinder III is fixed forward on support plate IV; the positioning pin III is fixed to the piston end of cylinder III, and a step matching the exhaust pipe is provided at the front end of the positioning pin III;When the positioning post III is positioned relative to the cylinder body, its axis is coaxial with the exhaust port on the cylinder body. The cylinder body's set position refers to its position when it is placed within the arc notch on the cylinder body support, with the cylinder end cap in close contact with the cylinder positioning end plate, and the exhaust port axis parallel to the horizontal plane. The cylinder II piston's working position refers to the position of the cylinder II piston when the cylinder body is in the set position, one end of the intake pipe is placed within the intake port on the cylinder body, and the other end is placed on the flange positioning plate at the piston end of cylinder II, with the bolt holes of the intake pipe flange fitting precisely on the positioning post II. This utility model utilizes the same tooling for welding the intake and exhaust pipes and support of the UAV engine muffler. It simultaneously fixes the intake and exhaust pipes and support in the set positions on the cylinder body, welding all three parts—the intake and exhaust pipes and support—to the cylinder body in one operation. This simplifies the operation and effectively ensures welding quality. During welding, first place the cylinder body within the arc-shaped notch on the cylinder body support. Rotate the cylinder body until the edge of the air inlet on the cylinder body contacts the arc-shaped notch on the front of the air inlet pipe support. Place the support on the slide block, ensuring the through hole on the support fits onto positioning pin I. Activate cylinder I; the piston of cylinder I pushes the slide block forward, bringing the support into tight contact with the cylinder end cap. Simultaneously, clamp the cylinder body between the support and the end plate. Place one end of the exhaust pipe into the exhaust hole on the cylinder body. Activate cylinder III; the piston of cylinder III pushes positioning pin III forward, and the step at the front end of positioning pin III enters the other end of the exhaust pipe. Place one end of the air inlet pipe into the air inlet on the cylinder body. Activate cylinder II; the piston of cylinder II pushes the flange positioning plate forward, bringing the flange positioning plate into tight contact with the air inlet pipe flange, and the bolt holes of the air inlet pipe flange fit onto positioning pin II. At this point, the positioning and clamping of the air inlet and exhaust pipes, support, and cylinder body are complete. Welding under these conditions not only simplifies the operation but also effectively ensures welding quality.

[0015] As one of the preferred technical solutions, triangular supports are provided on the back sides of each of the support plates I to IV. The triangular supports effectively improve the strength and rigidity of the support plates, ensuring effective support and durability for each plate.

[0016] Obviously, the beneficial technical effect of the welding fixture for the intake and exhaust pipes and support of the UAV engine muffler is that it can simultaneously position and clamp the intake and exhaust pipes and support with the cylinder body at one time, which not only simplifies the operation, but also effectively ensures the welding quality.

Claims

1. A welding tool for an unmanned aerial vehicle engine muffler inlet and exhaust pipes and support, characterized in that, The welding fixture includes a base plate, a cylinder positioning element, a support positioning element, an air inlet pipe positioning element, and an exhaust pipe positioning element. The base plate is rectangular, and a cylinder support and an air inlet pipe support are mounted on it. Two cylinder supports are spaced apart in the middle of the base plate, with an arc-shaped notch above each support matching the outer diameter of the cylinder. The air inlet pipe support is elongated and positioned next to the left side of the cylinder support plate. An arc-shaped notch matching the outer diameter of the cylinder is located on the inner side of the air inlet pipe support, and an arc-shaped notch on the front side matching the edge of the air inlet hole on the cylinder. When the fixed position and height of the air inlet pipe support are set with the cylinder as the reference position, the arc-shaped notch on the front side of the air inlet pipe support exactly aligns with the edge of the air inlet hole on the cylinder. The positioning of the cylinder body includes: a support plate I and an end plate; the support plate I is fixed to the left side of the base plate, and the end plate is disc-shaped and fixed inside the support plate I. A convex-concave structure matching the right end cap of the cylinder body is provided on the inner surface of the end plate; furthermore, the axis of the end plate is coaxial with the arc notch on the cylinder support; the positioning of the support includes: a fixed seat, a sliding seat, a cylinder I, and a positioning post I; the fixed seat is fixed to the right side of the base plate and is spaced a predetermined distance from the axis of the arc notch on the cylinder support; a slide rail is provided on the surface of the fixed seat, and a support plate II extends upwards from the outer side; the sliding seat is L-shaped, with its horizontal side mounted on the slide rail, and a positioning post I provided on the inner side of its vertical side; the size and spacing of the positioning post I match the through holes on the support. The cylinder I piston is fixed inward on the outside of the support plate II. The installation position and height of the slide, with the cylinder as the set position, are such that when the two through holes on the support are fitted onto the positioning post I, and the support is moved forward by the slide to make tight contact with the cylinder end cover, the position of the support meets the design requirements. The air inlet pipe positioning includes: support plate III, cylinder II, flange positioning plate, and positioning post II. The support plate III is fixed to the front side of the base plate. The piston of cylinder II is fixed inward on the support plate III. The flange positioning plate has an outer shape that matches the air inlet pipe flange, and a cylindrical step with a diameter matching the inner hole of the flange is provided at the front end, and it is fixed to the piston end of cylinder II. The positioning post II is fixed to the cylindrical step of the flange positioning plate. On both sides, their size and spacing are the same as the bolt holes of the intake pipe flange; the fixed position and height of the flange positioning plate are based on the following: after the piston of cylinder II extends to the working position, the surface of the flange positioning plate is perpendicular to the vertical plane of the arc notch of the cylinder support at an angle of α, and the line connecting the positioning pins II is perpendicular to the horizontal plane at an angle of β; the exhaust pipe positioning includes: support plate IV, cylinder III and positioning pin III; support plate IV is fixed to the rear side of the base plate; the piston of cylinder III is fixed forward on support plate IV; positioning pin III is fixed to the piston end of cylinder III, and a step matching the exhaust pipe is provided at the front end of positioning pin III; the fixed position and height of positioning pin III are based on the cylinder as the set position, and the axis of positioning pin III is coaxial with the exhaust hole on the cylinder;The set position of the cylinder refers to the position of the cylinder when it is placed within the arc notch on the cylinder support, with the right end cap of the cylinder in close contact with the positioning end plate, and the axis of the exhaust hole on the cylinder parallel to the horizontal plane. The working position of the piston of cylinder II refers to the position of the piston of cylinder II when the cylinder is in the set position, one end of the intake pipe is placed in the intake hole on the cylinder, and the other end is placed on the flange positioning plate at the piston end of cylinder II, with the bolt hole of the intake pipe flange fitting precisely on the positioning post II.

2. The welding fixture for the intake and exhaust pipes and support of the UAV engine muffler according to claim 1, characterized in that, The back side of the support plates I~IV is provided with a triangular support.

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