An automatic argon arc welding fixing device and method for pipes on an actuator cylinder

Abstract

An automatic TIG welding fixing device and method for an actuator cylinder upper pipeline is disclosed. The fixing device includes a mounting base, a replaceable clamping connector, and a gas supply pipe. The mounting base has a mounting hole and a blind hole below the mounting hole. The lower connecting part of the replaceable clamping connector is movably inserted into the mounting hole. A through hole is provided inside the replaceable clamping connector and communicates with the blind hole. The gas supply pipe is set on the mounting base and communicates with the blind hole. The method includes the following steps: Step 1: First, install the mounting base on the clamping chuck of the automatic TIG welding equipment; Step 2: Select the replaceable clamping connector 2 according to the different actuator cylinder upper pipelines being welded, and install it in the mounting hole of the mounting base; Step 3: Connect the gas supply pipe so that the welding shielding argon gas is delivered to the inside of the actuator cylinder upper pipeline through the gas supply pipe, the blind hole inside the mounting base, and the through hole inside the replaceable clamping connector; Step 4: Turn on the argon gas, select the welding program, and then perform automatic TIG welding on the actuator cylinder upper pipeline.

Description

Technical Field

[0001] This invention relates to the field of welding technology for the upper pipes of aero-engine actuators, and in particular to an automatic argon arc welding fixing device and method for the upper pipes of actuators. Background Technology

[0002] In the field of argon arc welding technology, relevant patents disclose argon arc welding-related devices. For example, patent CN208584087U discloses a gas protection device for automatic argon arc welding of tube sheets, which solves the problem of poor protection effect and low welding efficiency of the back gas protection device when welding fillet welds between titanium heat exchanger tubes and tube sheets in existing conventional automatic argon arc welding machines. Another example is patent CN209094832U, which discloses a welding head for a welding machine. During use, different adjustable joints can be replaced according to different angles, making welding work more convenient for operators and effectively improving work efficiency. The threads on the welding head body effectively increase friction.

[0003] However, none of the aforementioned existing patented technologies disclose an automatic argon arc welding method and device for fixing the aero-engine actuator cylinder pipes. The aero-engine actuator cylinder pipes need to be produced in large quantities, and they are mainly formed by welding pipes and pipe end joints. The pipe end joints are different. How to achieve rapid clamping and fixing of actuator cylinder pipes with different pipe end joints during welding and how to transmit welding protective argon gas during automatic argon arc welding is a difficult problem in the automatic argon arc welding technology of actuator cylinder pipes. Summary of the Invention

[0004] This invention addresses the problems of rapid clamping and fixing and internal welding protective argon gas transmission in automatic argon arc welding of pipes on actuator cylinders. It proposes an automatic argon arc welding fixing device and method for pipes on actuator cylinders, which can transmit welding protective argon gas to the pipes of actuator cylinders.

[0005] To achieve the above objectives, the present invention provides an automatic argon arc welding fixing device for the upper pipeline of an actuator cylinder, comprising a mounting base, a replaceable clamping connector, and a gas supply pipe; the mounting base has a mounting hole and a blind hole below the mounting hole; the replaceable clamping connector includes an upper connecting part and a lower connecting part, the lower connecting part being movably inserted into the mounting hole; the upper connecting part is used for mounting, connecting, and fixing the upper pipeline of the actuator cylinder; a through hole is provided inside the replaceable clamping connector, the through hole communicating with the blind hole; the gas supply pipe is disposed on the mounting base and communicates with the blind hole.

[0006] Preferably, the mounting base includes a lower column and an upper column, and the mounting holes and blind holes are all located inside the upper column.

[0007] Preferably, a cylindrical hole is provided on the upper column, and the air supply pipe is connected to the cylindrical hole.

[0008] Preferably, an internal thread is provided on the inner wall of the cylindrical hole, and an external thread is provided on the air supply pipe, with the air supply pipe and the cylindrical hole connected by a thread.

[0009] Preferably, the lower column and the upper column are integrally machined structures.

[0010] Preferably, both the mounting hole and the blind hole are cylindrical holes and are coaxially arranged, which facilitates the machining of the mounting hole and the blind hole.

[0011] Preferably, the upper and lower connecting parts of the replaceable clamping joint are cylindrical and are integrally machined structures.

[0012] On the other hand, the present invention also provides an automatic argon arc welding method for the upper pipe of the actuator cylinder, which uses the above-mentioned automatic argon arc welding fixing device for the upper pipe of the actuator cylinder and includes the following steps:

[0013] Step 1: First, install the mounting base on the clamping chuck of the automatic argon arc welding equipment;

[0014] Step 2: Select the replaceable clamping connector 2 according to the different pipes on the welding actuator and install it in the mounting hole of the mounting base;

[0015] Step 3: Install one end of the gas supply pipe on the mounting base and connect the other end to the argon gas supply mechanism, so that the welding protective argon gas is delivered to the inside of the pipe on the actuator cylinder through the gas supply pipe, the blind hole inside the mounting base, and the through hole inside the replaceable clamp connector.

[0016] Step 4: Turn on the argon gas, select the welding program, and the automatic argon arc welding can be performed on the pipeline on the actuator cylinder.

[0017] Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows:

[0018] By utilizing the lower connecting part of the replaceable clamping connector to be movably inserted into the mounting hole of the mounting base, and using the upper connecting part of the replaceable clamping connector to install, connect, and fix the upper pipeline of the actuator cylinder, the welding protective argon gas can be transmitted to the upper pipeline of the actuator cylinder through the gas supply pipe, the blind hole inside the mounting base, and the through hole inside the replaceable clamping connector. This allows for the rapid clamping and fixing of the upper pipeline of the actuator cylinder with different pipe end connectors during automatic argon arc welding, enabling mass production welding, transmitting welding protective argon gas, and featuring a simple structure that is easy to manufacture and has low manufacturing cost. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the automatic argon arc welding fixing device for the upper pipeline of the actuator cylinder provided by the present invention.

[0021] Figure 2 This is a cross-sectional view of the automatic argon arc welding fixing device for the actuated cylinder pipe provided by the present invention.

[0022] The reference numerals in the attached diagram are as follows: 1. Mounting base; 11. Lower column; 12. Upper column; 13. Mounting hole; 14. Blind hole; 15. Cylindrical hole; 2. Replaceable clamp connector; 21. Lower connecting part; 22. Upper connecting part; 23. Through hole; 3. Air supply pipe. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0025] Combination Figure 1 , Figure 2 As shown, an automatic argon arc welding fixing device for the upper pipeline of an actuator cylinder includes a mounting base 1, a replaceable clamping connector 2, and a gas supply pipe 3. The mounting base 1 has a mounting hole 13, and a blind hole 14 is provided below the mounting hole 13. The replaceable clamping connector 2 includes an upper connecting part 22 and a lower connecting part 21, the lower connecting part 21 being movably inserted into the mounting hole 13. The upper connecting part 22 is used for mounting, connecting, and fixing the upper pipeline of the actuator cylinder. A through hole 23 is provided inside the replaceable clamping connector 2, and the through hole 23 communicates with the blind hole 14. The gas supply pipe 3 is mounted on the mounting base 1 and communicates with the blind hole 14. The mounting base 1 includes a lower column 11 and an upper column 12, and the mounting hole 13 and the blind hole 14 are both located inside the upper column 12.

[0026] Specifically, a cylindrical hole 15 is provided on the upper column 12, and the air supply pipe 3 is connected to the cylindrical hole 15. An internal thread is provided on the inner wall of the cylindrical hole 15, and an external thread is provided on the air supply pipe 3. The air supply pipe 3 and the cylindrical hole 15 are connected by threads.

[0027] In this embodiment, the lower column 11 and the upper column 12 are integrally machined structures. The mounting hole 13 and the blind hole 14 are both cylindrical holes and are coaxially arranged, facilitating machining of the mounting hole and the blind hole. The upper connecting part 22 and the lower connecting part 21 of the replaceable clamping connector 2 are cylindrical and integrally machined structures.

[0028] In summary, the automatic argon arc welding and fixing device for pipelines on an actuated cylinder provided by the present invention has the following main component structure and function:

[0029] Mounting base 1: Its main function is to be mounted on the chuck, providing positioning support, fixing and connecting the replaceable clamping connector 2, and supplying argon gas. Mounting base 1 consists of two parts: a lower column 11 and an upper column 12, both integrally machined, and both cylindrical in shape. The lower column 11 is mounted on the automatic TIG welding chuck, and its diameter must be smaller than the chuck's maximum clamping size. An installation hole 13, preferably a cylindrical hole, is machined inside the upper column 12 for mounting the replaceable clamping connector 2. Below the installation hole 13, a blind hole 14 with a smaller diameter is machined to transmit the welding shielding argon gas from the gas supply pipe 3 to the replaceable clamping connector 2. A cylindrical hole 15 communicating with the blind hole 14 is provided around the upper column 12 of the mounting base 1, for mounting and connecting the gas supply pipe 3, allowing the welding shielding argon gas transported by the gas supply pipe 3 to be delivered into the blind hole 14. In addition, to prevent the lower column 11 of the mounting base 1 from deforming due to frequent clamping, the hardness and strength of the material of the mounting base 1 must be higher than the hardness and strength of the clamping claw material on the chuck.

[0030] Replaceable clamping connector 2: Its main function is to connect to the mounting base 1, clamp and fix the actuator cylinder pipeline, and deliver the welding shielding argon gas from the mounting base 1 to the inside of the actuator cylinder pipeline. The replaceable clamping connector 2 has two parts, namely the lower connecting part 21 and the upper connecting part 22. The shape and size of the lower connecting part 21 are the same as the mounting hole 13 of the mounting base 1, and it is installed in the mounting hole 13 of the mounting base 1. The upper connecting part 22 of the replaceable clamping connector 2 is cylindrical in shape, and its size and specifications are designed and processed according to the inner diameter of the pipe end connector of the actuator cylinder pipeline. It is used to connect and fix the actuator cylinder pipeline during automatic argon arc welding. In addition, the replaceable clamping connector 2 has a through hole 23 in the center, which is used to deliver the welding shielding argon gas delivered by the mounting base 1 to the inside of the actuator cylinder pipeline, protecting the inside of the actuator cylinder pipeline from oxidation due to welding heat.

[0031] Gas supply pipe 3: Its function is to transmit welding protective argon gas to the blind hole 14 of the mounting base. Its optimal shape is cylindrical. One end is connected to the cylindrical hole of the mounting base by thread, and the other end is connected to the pipeline of the welding protective argon gas transmission device by a detachable connection. Its main function is to enable the welding protective argon gas to be connected to protect the inside of the pipeline on the actuator cylinder during welding.

[0032] An automatic argon arc welding method for pipes on an actuator cylinder, characterized by employing the automatic argon arc welding fixing device for pipes on an actuator cylinder as described in any one of claims 1 to 7, comprising the following steps:

[0033] Step 1: First, install the mounting base 1 on the clamping chuck of the automatic argon arc welding equipment;

[0034] Step 2: Select the replaceable clamping connector 2 according to the different pipes on the welding actuator and install it in the mounting hole 13 of the mounting base 1;

[0035] Step 3: Install one end of the gas supply pipe 3 on the mounting base 1 and connect the other end to the argon gas supply mechanism so that the welding protective argon gas is delivered to the inside of the pipe on the actuator cylinder through the gas supply pipe 3, the blind hole 14 inside the mounting base 1 and the through hole 23 inside the replaceable clamping connector 2.

[0036] Step 4: Turn on the argon gas, select the welding program, and the automatic argon arc welding can be performed on the pipeline on the actuator cylinder.

[0037] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An automatic argon arc welding fixing device for a cylinder upper pipe, characterized in that, The device comprises a mounting base (1), a replaceable clamp joint (2), and a gas delivery pipe (3); the mounting base (1) is provided with a mounting hole (13), and a blind hole (14) is arranged below the mounting hole (13); the replaceable clamp joint (2) comprises an upper connecting part (22) and a lower connecting part (21), and the lower connecting part (21) is movably inserted into the mounting hole (13); the upper connecting part (22) is used for mounting, connecting, and fixing a pipe on an actuator cylinder; a through hole (23) is arranged in the replaceable clamp joint (2), and the through hole (23) is communicated with the blind hole (14); the gas delivery pipe (3) is arranged on the mounting base (1) and communicated with the blind hole (14); The mounting base (1) comprises a lower column body (11) and an upper column body (12), and the mounting hole (13) and the blind hole (14) are arranged in the upper column body (12); A cylindrical hole (15) is arranged on the upper column body (12), and the gas delivery pipe (3) is connected in the cylindrical hole (15); An internal thread is arranged on the inner wall of the cylindrical hole (15), and an external thread is arranged on the gas delivery pipe (3), and the gas delivery pipe (3) is connected with the cylindrical hole (15) through the threads; The lower column body (11) and the upper column body (12) are integrally turned into a shape; The mounting hole (13) and the blind hole (14) are both cylindrical holes, and coaxially arranged; The upper connecting part (22) and the lower connecting part (21) of the replaceable clamp joint (2) are cylindrical, and integrally turned into a shape.

2. A method of automatic argon arc welding of a pipe on a cylinder, characterized by The device comprises the following steps: Step 1: first, install the mounting base (1) on a clamping chuck of an automatic argon arc welding device; Step 2: select a replaceable clamp joint (2) according to different pipes on an actuator cylinder, and install the replaceable clamp joint (2) in the mounting hole (13) of the mounting base (1); Step 3: install one end of the gas delivery pipe (3) on the mounting base (1), and connect the other end with a argon gas delivery mechanism, so that the welding protective argon gas is delivered into the pipe on the actuator cylinder through the gas delivery pipe (3), the blind hole (14) in the mounting base (1), and the through hole (23) in the replaceable clamp joint (2); Step 4: open the argon gas, select a welding program, and then the pipe on the actuator cylinder can be welded by automatic argon arc welding.

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