Universal welding device for split sheet metal pipes

Abstract

The invention provides a universal welding device for split sheet metal pipes, and belongs to the technical field of aero-engine sheet metal pipeline part manufacturing. The universal welding device specifically comprises a mounting seat, a supporting frame, a first connecting rod and a second connecting rod; the support frame is mounted on the mounting seat; one end of the first connecting rod is connected with the supporting frame, the other end of the first connecting rod is connected with one end of the second connecting rod through a universal joint, the first connecting rod is in threaded connection with an air outlet plug and an air inlet plug, the air inlet plug is provided with an air inlet nozzle, and the air inlet nozzle penetrates through the air inlet plug. One end of the air inlet nozzle extends into the sheet metal pipe, and the other end of the air inlet nozzle is exposed out of the sheet metal pipe. According to the treatment scheme, the welding method is suitable for welding sheet metal pipe parts with different angles and diameter specifications within a certain range, scientific research and trial production of delivery nodes are guaranteed, and the welding efficiency is improved. And the situation that a set of special welding device is manufactured for each part with high cost is avoided.

Description

Technical Field

[0001] The present application relates to the field of manufacturing sheet metal pipeline parts for aero-engines, and particularly to a universal welding device for split sheet metal pipes. Background Art

[0002] Pipeline parts are an important part of aero-engines. Among them, sheet metal pipes are an important part of pipeline parts. They are formed by butt-welding two semi-circular pipes through longitudinal welds, as Figure 1 shown. There are many varieties and large quantities of sheet metal pipe welding in aero-engine pipeline components. The angles and diameter specifications of sheet metal pipes are inconsistent. During welding, different special toolings need to be designed to achieve rapid clamping of parts with different angles and specifications and to pass argon gas to protect the reverse side of the weld to prevent oxidation. Designing a special welding tooling for each sheet metal pipe welding separately has a high cost and a long cycle, seriously affecting the progress of scientific research, trial production and delivery. Summary of the Invention

[0003] In view of this, the present application provides a universal welding device for split sheet metal pipes, which solves the problems in the prior art, is applicable to welding sheet metal pipe parts with different angles and diameter specifications within a certain range, ensures the delivery nodes of scientific research, trial production, and avoids spending high costs to manufacture a set of special welding devices for each part.

[0004] The universal welding device for split sheet metal pipes provided by the present application adopts the following technical solutions:

[0005] A universal welding device for split sheet metal pipes includes a mounting base, a support frame, a first connecting rod, and a second connecting rod;

[0006] The support frame is mounted on the mounting base; one end of the first connecting rod is connected to the support frame, the other end of the first connecting rod is connected to one end of the second connecting rod through a universal joint. An air outlet plug is threadedly connected to the first connecting rod, and an air inlet plug is threadedly connected to the first connecting rod. An air inlet nozzle is installed on the air inlet plug. The air outlet plug matches the inner wall of one end of the sheet metal pipe, and the air inlet plug matches the inner wall of the other end of the sheet metal pipe. The air inlet nozzle passes through the air inlet plug, one end of the air inlet nozzle extends into the interior of the sheet metal pipe, and the other end of the air inlet nozzle protrudes from the sheet metal pipe.

[0007] Optionally, both the first connecting rod and the second connecting rod are threaded rods. The air inlet plug is provided with a through hole for the second connecting rod to pass through, and the air outlet plug is provided with a through hole for the first connecting rod to pass through. The through hole and the first connecting rod are slidably arranged, and the through hole and the second connecting pipe are slidably arranged. Both ends of the air inlet plug are provided with fixing nuts threadedly connected to the second connecting rod, and both ends of the air outlet plug are provided with fixing nuts threadedly connected to the first connecting rod.

[0008] Optionally, both the air inlet plug and the air outlet plug are frustum-shaped, and the taper of the frustum is 15-25°.

[0009] Optionally, there are grooves corresponding to the weld seams of the sheet metal pipes on the outer peripheral side surfaces of the air inlet plug and the air outlet plug.

[0010] Optionally, the support frame includes a support rod, a sleeve, and a connecting plate. The bottom end of the support rod is installed on the mounting seat. The sleeve is connected to the top of the support rod. One end of the connecting plate is provided with an opening for the first connecting rod to pass through. The fixing nut on the first connecting rod fixes the connecting plate and the air outlet plug on the first connecting rod. The other end of the connecting plate passes through the sleeve, and a locking bolt is threadedly connected to the sleeve. The locking bolt passes through the side wall of the sleeve and abuts against the connecting plate.

[0011] Optionally, the connecting plate is an L-shaped plate. One side plate of the L-shaped plate passes through the sleeve, and the other side plate of the L-shaped plate is connected to the support rod.

[0012] Optionally, an adjusting screw is provided on the side wall of the sleeve. The adjusting screw passes through the top of the support rod. The top of the support rod is provided with a through hole for the adjusting screw to pass through. The adjusting screw is rotatably connected to the through hole. The adjusting screw is slidably arranged along the through hole. Locking nuts are provided on both sides of the top of the support rod and are threadedly connected to the adjusting screw.

[0013] Optionally, the support rod is a telescopic rod.

[0014] In summary, the present application includes the following beneficial technical effects:

[0015] The welding device of the present application has a simple product structure, is convenient to operate, labor-saving, time-saving, and has high reliability; by using this welding device, the rapid assembly and welding of sheet metal pipe parts with different angles and specifications within a certain range are realized, saving more than a dozen sets of tooling, shortening the scientific research and trial production cycle, reducing production costs, improving the company's efficiency, and having great practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic diagram of the welding structure of the sheet metal pipe;

[0018] Figure 2 It is a schematic diagram of the structure of the universal welding device for the split sheet metal pipe of the present application.

[0019] Description of reference numerals: 1, mounting base; 2, support frame; 21, support rod; 211, sleeve; 212, slide bar; 22, sleeve; 221, locking bolt; 23, connecting plate; 24, adjusting screw; 25, locking nut; 26, handwheel; 3, first connecting rod; 31, air outlet plug; 4, second connecting rod; 41, air inlet plug; 42, air inlet nozzle; 5, universal joint; 6, fixing nut; 7, groove. Detailed implementation manners

[0020] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0021] The following uses specific specific examples to illustrate the implementation manners of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0022] It should be noted that the following describes various aspects of the embodiments within the scope of the appended claims. It should be obvious that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is illustrative only. Based on the present application, those skilled in the art should understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement the device and / or practice the method. Additionally, this device can be implemented and this method can be practiced using other structures and / or functionality in addition to one or more of the aspects described herein.

[0023] It also needs to be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner. The drawings only show the components related to the present application and are not drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in its actual implementation can be an arbitrary change, and the component layout type may also be more complex.

[0024] In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details.

[0025] An embodiment of the present application provides a general welding device for split sheet metal pipes.

[0026] As Figure 2 shown, a general welding device for split sheet metal pipes includes a mounting base 1, a support frame 2, a first connecting rod 3, and a second connecting rod 4.

[0027] The support frame 2 is mounted on the mounting base 1; one end of the first connecting rod 3 is connected to the support frame 2, the other end of the first connecting rod 3 is connected to one end of the second connecting rod 4 through a universal joint 5, an air outlet plug 31 is threadedly connected to the first connecting rod 3, an air inlet plug 41 is threadedly connected to the first connecting rod 3, an air inlet nozzle 42 is installed on the air inlet plug 41, an exhaust hole is provided on the air outlet plug 31, the air outlet plug 31 matches the inner wall of one end of the sheet metal pipe, the air inlet plug 41 matches the inner wall of the other end of the sheet metal pipe, the air inlet nozzle 42 passes through the air inlet plug 41, one end of the air inlet nozzle 42 extends into the interior of the sheet metal pipe, and the other end of the air inlet nozzle 42 protrudes from the sheet metal pipe. The air inlet nozzle 42 is used to connect argon gas to provide an argon gas environment for welding.

[0028] The two split sheet metal pipes are sleeved on the outer periphery of the air inlet plug 41 and the air outlet plug 31, and the two split sheet metal pipes are temporarily fixed by a clamp, and then welding operations are performed. The first connecting rod 3 and the second connecting rod 4 are connected through a universal joint 5, and split sheet metal pipes with different angles of bending can be used.

[0029] Both the air inlet plug 41 and the air outlet plug 31 are frustum-shaped, and the taper of the frustum is 15 - 25°, and the conical air inlet plug 41 and air outlet plug 31 can adapt to the welding of pipes with different inner diameter radii.

[0030] Both the first connecting rod 3 and the second connecting rod 4 are threaded rods. A through hole for the second connecting rod 4 to pass through is provided on the air inlet plug 41, a through hole for the first connecting rod 3 to pass through is provided on the air outlet plug 31, the through hole and the first connecting rod 3 are slidably arranged, the through hole and the second connecting pipe are slidably arranged, fixing nuts 6 threadedly connected to the second connecting rod 4 are provided at both ends of the air inlet plug 41, and fixing nuts 6 threadedly connected to the first connecting rod 3 are provided at both ends of the air outlet plug 31. By adjusting the position of the fixing nut 6, the positions of the air inlet plug 41 and the air outlet plug 31 are adjusted to adapt to sheet metal pipes of different lengths.

[0031] The outer peripheral side surfaces of the intake plug 41 and the outlet plug 31 are provided with grooves 7 corresponding to the seams of the sheet metal pipes. The grooves 7 correspond to the seams, ensuring the normal welding of the sheet metal pipes in the areas corresponding to the intake plug 41 and the outlet plug 31.

[0032] The support frame 2 includes a support rod 21, a sleeve 22 and a connecting plate 23. The bottom end of the support rod 21 is installed on the mounting seat 1. The sleeve 22 is connected to the top of the support rod 21. One end of the connecting plate 23 is provided with an opening for the first connecting rod 3 to pass through. The fixing nut 6 on the first connecting rod 3 fixes the connecting plate 23 and the outlet plug 31 on the first connecting rod 3. The other end of the connecting plate 23 passes through the sleeve 22. A locking bolt 221 is threadedly connected to the sleeve 22. The locking bolt 221 passes through the side wall of the sleeve 22 and abuts against the connecting plate 23. By adjusting the relative positions of the connecting plate 23 and the sleeve 22, the positions of the first connecting rod 3 and the second connecting rod 4 are adjusted to adapt to sheet metal pipes of different lengths. The connecting plate 23 is an L-shaped plate. One side plate of the L-shaped plate passes through the sleeve 22, and the other side plate of the L-shaped plate is connected to the support rod 21.

[0033] An adjusting screw rod 24 is provided on the side wall of the sleeve 22. The adjusting screw rod 24 passes through the top of the support rod 21. The top of the support rod 21 is provided with a through hole for the adjusting screw rod 24 to pass through. The adjusting screw rod 24 is rotatably connected to the through hole. The adjusting screw rod 24 is slidably arranged along the through hole. Locking nuts 25 threadedly connected to the adjusting screw rod 24 are provided on both sides of the top of the support rod 21. After adjusting the angle of the adjusting screw rod 24 by rotation and then tightening the locking nuts 25, the orientation of the sleeve 22 is adjusted, changing the angle between the first connecting rod 3 and the second connecting rod 4, providing sufficient installation space for sheet metal pipes of various angles. By pulling the adjusting screw rod 24, the distance between the sleeve 22 and the support rod 21 can be adjusted. A hand wheel 26 is installed on the locking nut 25 on the side of the support rod 21 facing away from the sleeve 22, facilitating the rotation of the locking nut 25.

[0034] The support rod 21 is a telescopic rod. By adjusting the total length of the telescopic rod, the height of the sleeve 22 is adjusted to adjust the heights of the first connecting rod 3 and the second connecting rod 4 to adapt to sheet metal pipes of different specifications. Specifically, the telescopic rod includes a sleeve 211 and a sliding rod 212. The sleeve 211 is fixed on the mounting seat 1. One end of the sliding rod 212 is slidably located in the sleeve 211. The top end of the sliding rod 212 is connected to the connecting plate 23. A bolt is threadedly connected to the top of the sleeve 211. The bolt passes through the side wall of the sleeve 211 and abuts against the sliding rod 212.

[0035] As described above, it is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A universal welding device for split sheet metal tubes, characterized in that: It comprises a mounting seat (1), a support frame (2), a first connecting rod (3) and a second connecting rod (4); The support frame (2) is mounted on the mounting seat (1); one end of the first connecting rod (3) is connected to the support frame (2), the other end of the first connecting rod (3) is connected to one end of the second connecting rod (4) through a universal joint (5), an air outlet plug (31) is threadedly connected to the first connecting rod (3), an air inlet plug (41) is threadedly connected to the first connecting rod (3), an air inlet nozzle (42) is mounted on the air inlet plug (41), the air outlet plug (31) matches the inner wall of one end of the sheet metal tube, the air inlet plug (41) matches the inner wall of the other end of the sheet metal tube, the air inlet nozzle (42) passes through the air inlet plug (41), one end of the air inlet nozzle (42) extends into the interior of the sheet metal tube, and the other end of the air inlet nozzle (42) leaks out of the sheet metal tube.

2. The universal welding device for split sheet metal tubes according to claim 1, characterized in that: The first connecting rod (3) and the second connecting rod (4) are both threaded rods, the air inlet plug (41) is provided with a through hole for the second connecting rod (4) to pass through, the air outlet plug (31) is provided with a through hole for the first connecting rod (3) to pass through, the through hole and the first connecting rod (3) are slidably arranged, the through hole and the second connecting pipe are slidably arranged, the two ends of the air inlet plug (41) are provided with fixing nuts (6) threadedly connected to the second connecting rod (4), and the two ends of the air outlet plug (31) are provided with fixing nuts (6) threadedly connected to the first connecting rod (3).

3. The universal welding device for split sheet metal tubes according to claim 1, characterized in that: The air inlet plug (41) and the air outlet plug (31) are both in the shape of a truncated cone, and the taper of the truncated cone is 15-25°.

4. The universal welding device for split sheet metal tubes according to claim 1, characterized in that: The air inlet plug (41) and the air outlet plug (31) are provided with grooves (7) corresponding to the weld seams of the sheet metal tubes on their outer peripheral sides.

5. The universal welding device for split sheet metal tubes according to claim 2, characterized in that: The support frame (2) comprises a support rod (21), a sleeve (22) and a connecting plate (23); the bottom end of the support rod (21) is mounted on the mounting seat (1); the sleeve (22) is connected to the top of the support rod (21); one end of the connecting plate (23) is provided with an opening for the first connecting rod (3) to pass through; a fixing nut (6) on the first connecting rod (3) fixes the connecting plate (23) and the air outlet plug (31) to the first connecting rod (3); the other end of the connecting plate (23) passes through the sleeve (22); a locking bolt (221) is threadedly connected to the sleeve (22); the locking bolt (221) passes through the side wall of the sleeve (22) and presses against the connecting plate (23).

6. The universal welding device for split sheet metal tubes according to claim 5, characterized in that: The connecting plate (23) is an L-shaped plate, one side plate of the L-shaped plate passes through the sleeve (22), and the other side plate of the L-shaped plate is connected to the support rod (21).

7. The universal welding device for split sheet metal tubes according to claim 5, characterized in that: An adjusting screw (24) is provided on the side wall of the sleeve (22), the adjusting screw (24) passes through the top of the support rod (21), the top of the support rod (21) is provided with a through hole for the adjusting screw (24) to pass through, the adjusting screw (24) and the through hole are rotatably connected, the adjusting screw (24) is slidably arranged along the through hole, and locking nuts (25) threadedly connected to the adjusting screw (24) are provided on both sides of the top of the support rod (21).

8. The universal welding device for split sheet metal tubes according to claim 5, characterized in that: The support rod (21) is a telescopic rod.

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