A protective device for argon arc welding of titanium alloy parts

Abstract

This utility model discloses a protective device for argon arc welding of titanium alloy parts, relating to the field of titanium alloy welding technology. It includes a first protective shell and a second protective shell, with two second protective shells respectively disposed on both sides of the first protective shell. A blowing plate is fixedly installed on the lower side of both the first and second protective shells. The surface of the blowing plate has multiple blowing holes. A rotating block is fixedly installed on the side of each of the two second protective shells closest to the first protective shell. A rotating rod is rotatably sleeved inside the rotating block, and connecting blocks are rotatably sleeved at both ends of the rotating rod. One side of the connecting block is fixedly connected to the first protective shell. A protective gas inlet pipe is connected to the middle of the upper surface of the first protective shell, and both sides of the upper end of the protective gas inlet pipe are connected to the second protective shell through connecting pipes. This utility model can provide air protection for the weld after welding, effectively preventing weld oxidation and improving the quality and aesthetics of the weld.

Description

Technical Field

[0001] This utility model relates to the field of titanium alloy parts welding technology, specifically to a protective device for argon arc welding of titanium alloy parts. Background Technology

[0002] During the argon arc welding process of titanium alloy parts, the weld seam is highly susceptible to reaction with oxygen in the air at high temperatures, leading to weld oxidation. Weld oxidation not only reduces the weld's strength, toughness, and other mechanical properties, affecting the performance and service life of the parts, but also causes discoloration and roughness on the weld surface, severely impacting its aesthetics. Currently, most existing argon arc welding equipment focuses only on gas protection during the welding process, lacking effective protection measures for the weld seam after welding, which remains in a high-temperature, red-hot state, thus failing to meet the requirements for welding high-quality titanium alloy parts. Utility Model Content

[0003] In view of the problems existing in the above-mentioned argon arc welding weld protection devices for titanium alloy parts, this utility model is proposed.

[0004] Therefore, the purpose of this utility model is to provide a protective device for argon arc welding of titanium alloy parts, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A protective device for argon arc welding of titanium alloy parts includes a first protective shell and a second protective shell. The two second protective shells are respectively disposed on both sides of the first protective shell. An air blowing plate is fixedly disposed on the lower side of both the first and second protective shells. The surface of the air blowing plate is provided with multiple air blowing holes. A rotating block is fixedly disposed on the side of each of the two second protective shells near the first protective shell. A rotating rod is rotatably sleeved inside the rotating block. A connecting block is rotatably sleeved at both ends of the rotating rod. One side of the connecting block is fixedly connected to the first protective shell. A protective gas inlet pipe is connected to the middle of the upper surface of the first protective shell. The upper ends of the protective gas inlet pipe are connected to the second protective shells through connecting pipes on both sides. A transmission mechanism is provided on both sides of the lower end of the protective gas inlet pipe to drive the two second protective shells to rotate around the rotating rod.

[0007] Preferably, the transmission mechanism includes push rods and pins. Two side plates are fixedly installed on the outer walls of both sides of the lower end of the protective gas inlet pipe. A transmission rod is rotatably installed on the two side plates. Multiple push rods are respectively installed on both sides of the corresponding second protective shell. The upper ends of multiple push rods are fixedly sleeved with one end of the corresponding transmission rod. Multiple pins are rotatably sleeved on the side of the lower end of the push rod near the second protective shell. Both sides of the second protective shell are provided with strip grooves. One end of the pin extends to the inner side of the corresponding strip groove. A limiting mechanism for restricting the rotation of the transmission rod is provided between the two side plates.

[0008] Preferably, the limiting mechanism includes a limiting ring and a first threaded rod. The limiting ring is disposed between the two side plates and is fixedly sleeved with the middle end of the transmission rod. The side wall of the limiting ring is provided with a plurality of insertion holes arranged in a ring array with the center of the limiting ring as the axis. A fixing plate is fixedly disposed between the two side plates and on one side of the limiting ring. A first threaded hole is provided in the middle of the fixing plate, and one end of the first threaded rod is inserted into the corresponding insertion hole.

[0009] Preferably, a horizontal plate is fixedly sleeved on the upper end of the protective gas inlet pipe, and an installation hole is opened on the surface of the horizontal plate away from the protective gas inlet pipe. An installation tube is fixedly sleeved inside the installation hole, and a second threaded hole is opened on one side of the installation tube. A second threaded rod is threadedly sleeved inside the second threaded hole.

[0010] Preferably, both connecting pipes are flexible hoses.

[0011] Preferably, the inner wall of the strip groove and the rod wall of the round pin are both coated with a wear-resistant coating.

[0012] Preferably, a rubber pad is fixedly installed at one end of the second threaded rod located inside the mounting tube.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] 1. This utility model adjusts the angle of the second protective shell through a transmission mechanism. Rotating the transmission rod drives the push rod to push the round pin to slide within the strip groove, causing the second protective shell to rotate around the rotating rod as an axis, thus matching the arc of the weld. After the limiting ring and the first threaded rod are engaged and fixed at an angle, the protective gas flows from the protective gas inlet pipe through the connecting pipe into the blowing plate. Argon gas is continuously blown onto the high-temperature weld through the blowing holes, forming a dynamic protective gas curtain. This cools the weld while preventing oxygen from contacting it, improving the mechanical properties and aesthetics of the weld.

[0015] 2. In this utility model, the installation tube fixes the welding head through the second threaded rod, and the rubber pad prevents clamping damage, so that the protection device can move with the welding head and ensure that the protective gas curtain always covers the weld during the welding process. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the structure of a protective device for argon arc welding of titanium alloy parts proposed in this utility model;

[0018] Figure 2 for Figure 1 Another structural diagram from a different perspective;

[0019] Figure 3 This is a perspective view of the limiting mechanism in this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. First protective shell; 2. Second protective shell; 3. Protective gas inlet pipe; 4. Connecting pipe; 5. Connecting block; 6. Rotating block; 7. Rotating rod; 8. Limiting ring; 9. Side plate; 10. Transmission rod; 11. Push rod; 12. Round pin; 13. Horizontal plate; 14. Mounting pipe; 15. Second threaded rod; 16. Fixing plate; 17. First threaded rod; 18. Air blowing plate. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0023] This utility model discloses a protective device for argon arc welding of titanium alloy parts.

[0024] Reference Figure 1-3A protective device for argon arc welding of titanium alloy parts includes a first protective shell 1 and a second protective shell 2. The two second protective shells 2 are respectively disposed on both sides of the first protective shell 1. An air blowing plate 18 is fixedly disposed on the lower side of both the first protective shell 1 and the second protective shell 2. The surface of the air blowing plate 18 is provided with multiple air blowing holes. A rotating block 6 is fixedly disposed on the side of each of the two second protective shells 2 near the first protective shell 1. A rotating rod 7 is rotatably sleeved inside the rotating block 6. A connecting block 5 is rotatably sleeved at both ends of the rotating rod 7. One side of the connecting block 5 is fixedly connected to the first protective shell 1. A protective gas inlet pipe 3 is connected to the middle of the upper surface of the first protective shell 1. The upper ends of the protective gas inlet pipe 3 are connected to the second protective shells 2 through connecting pipes 4 on both sides. Both connecting pipes 4 are flexible hoses to facilitate movement with the second protective shells 2. A transmission mechanism is provided on both sides of the lower end of the protective gas inlet pipe 3 to drive the two second protective shells 2 to rotate around the rotating rod 7.

[0025] Reference Figure 1-3 The transmission mechanism includes push rods 11 and pins 12. Two side plates 9 are fixedly installed on the outer walls of both sides of the lower end of the protective gas inlet pipe 3. Transmission rods 10 are rotatably installed on the two side plates 9. Multiple push rods 11 are respectively installed on both sides of the corresponding second protective shell 2. The upper ends of multiple push rods 11 are fixedly sleeved with one end of the corresponding transmission rod 10. Multiple pins 12 are rotatably sleeved on the side of the lower end of the push rod 11 near the second protective shell 2. Both sides of the second protective shell 2 are provided with strip grooves. One end of the pin 12 extends to the inner side of the corresponding strip groove. The inner wall of the strip groove and the rod wall of the pin 12 are coated with a wear-resistant coating to improve the wear resistance of the inner wall of the strip groove and the pin 12. A limiting mechanism is provided between the two side plates 9 to restrict the rotation of the transmission rod 10.

[0026] Reference Figure 1-3 The limiting mechanism includes a limiting ring 8 and a first threaded rod 17. The limiting ring 8 is disposed between two side plates 9 and is fixedly sleeved with the middle end of the transmission rod 10. The side wall of the limiting ring 8 is provided with multiple insertion holes arranged in a ring array with the center of the limiting ring 8 as the axis. A fixing plate 16 is fixedly disposed between the two side plates 9 and on one side of the limiting ring 8. A first threaded hole is provided in the middle of the fixing plate 16. One end of the first threaded rod 17 is inserted into the corresponding insertion hole, which can limit the second protective shell 2 after the angle adjustment of the second protective shell 2 is completed.

[0027] Reference Figure 1-3A horizontal plate 13 is fixedly sleeved on the upper end of the protective gas inlet pipe 3. An installation hole is opened on the surface of the end of the horizontal plate 13 away from the protective gas inlet pipe 3. An installation pipe 14 is fixedly sleeved inside the installation hole. A second threaded hole is opened on one side of the installation pipe 14. A second threaded rod 15 is threadedly sleeved inside the second threaded hole. A rubber pad is fixedly installed on one end of the second threaded rod 15 inside the installation pipe 14 to prevent the welding head installed in the installation pipe 14 from being pinched. This facilitates the installation of the welding head in the installation pipe 14, realizes the connection between the protective device and the welding head, and can move with the welding head to blow gas to protect the weld that has just been welded, effectively preventing the oxidation of the uncooled weld.

[0028] In this invention, during use, the installation tube 14 is clamped onto the argon arc welding head and fixed by the second threaded rod 15. The transmission rod 10 is rotated according to the arc of the weld, and the push rod 11 drives the second protective shell 2 to rotate around the rotating rod 7 to a suitable angle. The first threaded rod 17 is rotated so that it is inserted into the corresponding insertion hole. The first threaded rod 17 fixes the limiting ring 8. During welding, the protective gas is diverted from the protective gas inlet pipe 3 to the connecting pipe 4, and argon gas is continuously blown onto the weld through the blowing holes of the blowing plate 18 to form a protective gas curtain. When the welding head moves, the hose connecting pipe moves synchronously with the second protective shell to ensure that the high-temperature weld is always within the protective gas coverage area until the weld cools down to a safe temperature, effectively preventing oxidation.

[0029] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for protecting argon arc welded seams of titanium alloy parts, comprising a first protective shell (1) and a second protective shell (2), characterised in that, Two second protective shells (2) are respectively disposed on both sides of the first protective shell (1). Air blowing plates (18) are fixedly disposed on the lower side of the first protective shell (1) and the second protective shell (2). Multiple air blowing holes are opened on the surface of the air blowing plates (18). Rotating blocks (6) are fixedly disposed on the side of the two second protective shells (2) near the first protective shell (1). Rotating rods (7) are rotatably sleeved inside the rotating blocks (6). Connecting blocks (5) are rotatably sleeved at both ends of the rotating rods (7). One side of the connecting blocks (5) is fixedly connected to the first protective shell (1). A protective gas inlet pipe (3) is connected to the middle of the upper surface of the first protective shell (1). The upper ends of the protective gas inlet pipe (3) are connected to the second protective shells (2) through connecting pipes (4). The lower ends of the protective gas inlet pipe (3) are provided with transmission mechanisms that drive the two second protective shells (2) to rotate around the rotating rods (7).

2. The titanium alloy component argon arc weld seam protection device of claim 1, wherein, The transmission mechanism includes push rods (11) and pins (12). Two side plates (9) are fixedly installed on the outer walls of both sides of the lower end of the protective gas inlet pipe (3). A transmission rod (10) is rotatably installed on the two side plates (9). Multiple push rods (11) are respectively installed on both sides of the corresponding second protective shell (2). The upper ends of multiple push rods (11) are fixedly sleeved with one end of the corresponding transmission rod (10). Multiple pins (12) are rotatably sleeved on the side of the lower end of the push rod (11) close to the second protective shell (2). The second protective shell (2) has a strip groove on both sides. One end of the pin (12) extends to the inner side of the corresponding strip groove. A limiting mechanism for restricting the rotation of the transmission rod (10) is provided between the two side plates (9).

3. The titanium alloy component argon arc weld seam protection device of claim 2, wherein, The limiting mechanism includes a limiting ring (8) and a first threaded rod (17). The limiting ring (8) is disposed between the two side plates (9). The limiting ring (8) is fixedly sleeved with the middle end of the transmission rod (10). The side wall of the limiting ring (8) is provided with multiple insertion holes arranged in a ring array with the center of the limiting ring (8) as the axis. A fixing plate (16) is fixedly disposed between the two side plates (9) and on one side of the limiting ring (8). A first threaded hole is provided in the middle of the fixing plate (16). One end of the first threaded rod (17) is inserted into the insertion hole of the corresponding limiting ring (8).

4. The titanium alloy component argon arc weld seam protection device of claim 1, wherein, A horizontal plate (13) is fixedly sleeved on the upper end of the protective gas inlet pipe (3). An installation hole is opened on the surface of the horizontal plate (13) away from the protective gas inlet pipe (3). An installation pipe (14) is fixedly sleeved inside the installation hole. A second threaded hole is opened on one side of the installation pipe (14). A second threaded rod (15) is threaded inside the second threaded hole.

5. The titanium alloy component argon arc weld seam protection device of claim 1, wherein, Both connecting pipes (4) mentioned on both sides are flexible hoses.

6. The titanium alloy component argon arc weld seam protection device of claim 2, wherein, The inner wall of the groove and the rod wall of the pin (12) are both coated with a wear-resistant coating.

7. The titanium alloy component argon arc weld joint protection device of claim 4, wherein, A rubber pad is fixedly installed at one end of the second threaded rod (15) inside the mounting tube (14).

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