A protection device for welding titanium

Abstract

The utility model discloses a titanium material welding's protection device, include: protection box body, install on the welding torch, be equipped with the air inlet pipe on it, and the lower part of protection box body is equipped with the gas outlet, protection box body passes through the installation component and installs on the welding torch, and the installation component includes: fastener and mounting ring, fastener, detachable setting is on the welding torch, mounting ring is located below fastener, and the sleeve is on the welding torch, and mounting ring is configured to move along the axial movement of welding torch, and protection box body is connected through the universal movable component in mounting ring to make the angle of protection box body adjustable. The height of the protection device's protection box body, angle adjustable make this protection box body can adapt to different welding scene, improved the adaptability of protection box body, guaranteed the normal use of welding torch.

Description

Technical Field

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

[0002] Titanium alloys possess characteristics such as low density, high specific strength, good corrosion resistance, low thermal conductivity, non-toxicity, non-magnetic properties, and weldability; they are widely used in aerospace, chemical, petroleum, power, medical, construction, and sporting goods industries. Common welding methods for titanium and titanium alloys include argon arc welding and submerged arc welding. Argon arc welding is a welding technique that uses argon gas as a shielding gas. It is also known as argon gas shielded welding. In this method, argon gas is passed around the arc welding area to isolate the weld zone from air and prevent oxidation.

[0003] Normally, the argon gas from the welding torch is ejected from the nozzle, forming a columnar protective gas shield at the front end. However, the nozzle protection of ordinary welding torches has inherent limitations, resulting in blind spots. Therefore, a protective shield is added at the rear end of the welding torch (the rear end in the direction of torch movement) to solve the problem of weld oxidation caused by the blind spots of ordinary nozzle protection.

[0004] Currently, weld protection devices for TIG welding are typically fixed to the welding torch and move with it. For example, CN107378210A discloses an automatic TIG welding weld front gas protection device, which uses a protective chamber to carry the protective gas on one side of the welding torch, with gas exiting from an outlet at the bottom of the chamber to protect the weld. Another example is the titanium alloy welding gas torch protection shroud disclosed in CN 220073526 U. However, these types of protection devices are mainly designed for flat welding and are less suitable for pipe fittings or corner welding. The added protection device can also affect the use of the welding torch.

[0005] Therefore, a protective device applicable to welded parts of different shapes is needed. Utility Model Content

[0006] To address the aforementioned issues, this utility model provides a protective device for titanium welding. The height and angle of the protective box can be adjusted according to the welding scenario and the welding components, thereby avoiding the inability of the protective box to adjust and affecting the normal use of the welding torch, and improving the adaptability of the protective box.

[0007] Specifically, this utility model is implemented as follows:

[0008] A protective device for welding titanium materials includes: a protective housing mounted on a welding torch, having an air inlet pipe thereon, and an air outlet at the lower part of the protective housing; the protective housing is mounted on the welding torch via a mounting assembly, the mounting assembly comprising:

[0009] Fasteners are detachably mounted on the welding torch;

[0010] A mounting ring, located below the fastener and fitted onto the welding torch, is configured to move along the axial direction of the welding torch;

[0011] The protective housing is connected to the mounting ring via a universal joint, making the angle of the protective housing adjustable.

[0012] Furthermore, the fastener includes:

[0013] A clamp, used for mounting on the welding torch;

[0014] An installation sleeve is provided at the bottom of the clamp, and its diameter is larger than that of the welding torch. The installation sleeve is fitted onto the welding torch.

[0015] A limiting ring is threadedly connected to the bottom of the mounting sleeve;

[0016] The mounting ring is fitted onto the mounting sleeve, and a spring is installed between the mounting ring and the upper protruding ring of the mounting sleeve.

[0017] Furthermore, the omnidirectional motion component includes:

[0018] The ball head is located on the mounting ring;

[0019] A ball seat is located at one end of the protective housing near the mounting ring, and the ball head fits into the ball seat.

[0020] Furthermore, a mounting portion is provided at one end of the protective housing near the mounting ring, and the ball seat is mounted on the mounting portion.

[0021] Furthermore, the ball seat has connecting parts on both sides, and a torsion spring is sleeved on the connecting parts, and the torsion spring is fixedly connected to the mounting part.

[0022] Furthermore, an air distribution plate is provided at the air outlet.

[0023] Furthermore, the vent is located in the middle of the protective housing and extends along the welding direction.

[0024] Furthermore, the air distribution plate is provided in multiple parts, which are arranged along the welding direction, and the air volume gradually increases along the welding direction; or

[0025] The air distribution holes on the air distribution plate gradually increase in size along the welding direction, meaning that the closer to the welding torch, the greater the air volume.

[0026] Working principle:

[0027] During operation, in addition to argon gas being emitted from the welding torch, this protective device also protects the weld bead. Argon gas enters the protective housing through the inlet pipe and is then blown out from the outlet, protecting the weld bead. For welding different shapes, the position of the protective housing remains relatively fixed when the welding torch position changes. When adjusting the welding torch angle, the universal joint moves, while the angle of the protective housing remains relatively fixed, ensuring the effectiveness of the argon gas protection.

[0028] When the angle of the welding torch is relatively fixed, but the protective box needs to be adapted to the welding position, the angle of the welding torch is fixed. At this time, the protective box will be squeezed by the workpiece to be welded, which will cause the universal movable component to move and adjust the angle of the protective box. This ensures the protective effect of argon gas without affecting the normal welding work of the welding torch.

[0029] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0030] (1) The protective device for titanium welding provided by this utility model has adjustable height and angle of the protective box, which makes the protective box adaptable to different welding scenarios, improves the adaptability of the protective box, and ensures the normal use of the welding gun.

[0031] (2) The symmetrical torsion spring design on both sides of the ball seat does not affect the normal angle adjustment of the protective box, and can return the protective box to its initial position when the external force is removed. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the protective device for titanium welding in Example 1;

[0033] Figure 2 This is a top view of the protective device for titanium welding in Example 1 under explosion conditions.

[0034] Figure 3 This is an exterior view of the protective device for titanium welding in Example 1 under an exploded state;

[0035] Figure 4 This is a schematic diagram of the height adjustment action of the protective box in Example 1;

[0036] Figure 5 This is a schematic diagram of the protective box flipping angle adjustment action in Example 1;

[0037] Figure 6 This is a schematic diagram of the tilt angle adjustment action of the protective box in Example 1;

[0038] Figure 7 This is a diagram showing the usage status of the welding corner in Example 1;

[0039] Figure 8 This is a schematic diagram of the action at the welding corner in Example 1;

[0040] Figure 9 This is a schematic diagram of the action at the welding corner in Example 1;

[0041] Figure 10 This is a diagram showing the usage state of the cylinder and the plane being welded together in Example 1;

[0042] Figure 11 This is a diagram showing the usage state of the cylindrical welding in Example 1;

[0043] Figure 12 This is an exterior view of the protective device for titanium welding in Example 2 under an exploded state;

[0044] Figure 13 This is an exterior view of the protective device for titanium welding in Example 3 under an explosion condition.

[0045] Figure label:

[0046] 1-Protective housing; 11-Inlet pipe; 12-Air distribution plate; 13-Mounting part; 2-Fastener; 21-Clamp; 22-Mounting sleeve; 23-Mounting ring; 24-Spring; 25-Limiting ring; 3-Universal movable component; 31-Ball head; 32-Ball seat; 321-Connecting part; 33-Torsion spring; 4-Welding torch. Detailed Implementation

[0047] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0048] Example 1

[0049] like Figure 1-3 As shown, this embodiment provides a protective device for titanium welding, including: a protective box 1 and an installation component 2. The protective box 1 is installed on one side of the welding torch 4 through the installation component 2. The upper part of the protective box 1 is provided with an air inlet pipe 11, which is connected to an argon gas source. The bottom is an air outlet and is provided with an air distribution plate 12. The air distribution plate 12 has a porous structure, which evenly disperses the argon gas and blows it toward the welding part.

[0050] Mounting assembly 2 includes a fastener and a mounting ring 23. The fastener consists of a clamp 21, a mounting sleeve 22, and a limiting ring 25. The clamp 21 is used to fix the protective housing 1 to the welding torch 4. The mounting sleeve 22 is a sleeve-shaped structure located below the clamp 21. The top of the mounting sleeve 22 is a convex ring, and the bottom is externally threaded. Its diameter is larger than the diameter of the welding torch 4 so that it can be fitted onto the welding torch 4. The limiting ring 25 is threaded to the bottom of the mounting sleeve 22. The mounting ring 23 is fitted onto the mounting sleeve 22 and is limited by the limiting ring 25. A spring 24 is provided above the mounting ring 23, which allows the mounting ring 23 to move axially within the mounting sleeve 22.

[0051] The mounting ring 23 and the protective housing 1 are connected by a universal joint 3, which includes a ball head 31 and a ball seat 32. The ball head 31 and the ball seat 32 fit together to form a spherical universal structure. Figure 5-6 As shown, the universal joint 3 allows for adjustment of the flip and pitch angles of the protective housing 1 to adapt to different welding scenarios. The ball head 31 is fixed to the mounting ring 23, and the ball seat 32 is bolted to the mounting portion 13 of the protective housing 1. The bolt passes through a hole in the mounting portion 13 and is threadedly connected to the connecting portion 321 of the ball seat 32, allowing the bolt to rotate within the hole. A torsion spring 33 is fitted onto the connecting portion 321 and connects to a slot on the mounting portion 13. When the ball seat 32 adjusts its angle due to external force, the torsion spring 33 undergoes torsional deformation. Once the external force is removed, the elastic restoring torque of the torsion spring 33 drives the ball seat 31 back to its initial position, achieving a rapid return function for the ball seat 31.

[0052] Specifically, such as Figure 7-9 As shown, when welding is done at a corner, the welding torch 4 is aimed at the welding area. At this time, the angle of the protective box 1 is adjusted so that it can support the two plates to be welded. When the welding torch 4 moves down so that the torch head is in the welding position, the protective box 1 and the mounting ring move up under the blocking effect of the two plates to ensure that the protective box 1 will not affect the position of the welding torch head.

[0053] Similarly, such as Figure 10 As shown, when welding a cylinder to a plane, the protective box 1 is adjusted to a supportable state, and the welding torch 4 is moved down so that the torch head is in the welding position, and it will not be blocked by the protective box 1.

[0054] like Figure 10 As shown, when welding tubular parts, with the height of the welding torch remaining constant, the protective box 1 can always remain in a low position under the action of gravity, as close as possible to the weld, thus effectively protecting the welding part.

[0055] Example 2

[0056] Based on Example 1, to reduce the amount of argon gas used, the outlet area can be appropriately reduced, i.e., as shown in Example 1. Figure 12 As shown, the air outlet and the air distribution plate 12 of the protective box 1 can be arranged in a long strip in the middle of the protective box 1 and directly opposite the weld bead, so that the argon gas is directly blown into the weld bead during the cooling process. While ensuring the anti-oxidation effect, the amount of argon gas used can be reduced.

[0057] Example 3

[0058] During welding, the temperature of the weld bead furthest from the weld point is relatively low, while the temperature increases closer to the weld point. Therefore, based on Example 2, as... Figure 13As shown, the air distribution plate 12 can be designed as multiple air distribution plates 12, arranged along the welding direction, with the air volume gradually increasing along the welding direction (i.e., the air volume is greater closer to the welding torch). Alternatively, it can be designed as a single air distribution plate 12, with the air distribution holes on the single air distribution plate 12 becoming larger along the welding direction, so that the air volume is larger in the high-temperature areas and smaller in the relatively low-temperature areas, forming effective protection for the high-temperature areas.

[0059] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art to which this invention pertains can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. A protective device for welding titanium materials, comprising: A protective housing (1) is mounted on a welding torch (4) and has an air inlet pipe (11) thereon. The lower part of the protective housing (1) has an air outlet. The protective housing (1) is characterized in that it is mounted on the welding torch (4) via a mounting assembly, the mounting assembly comprising: Fastener (2) is detachably mounted on the welding torch (4); Mounting ring (23) is located below the fastener (2) and is fitted onto the welding torch (4). The mounting ring (23) is configured to move axially along the welding torch (4). The protective housing is connected to the mounting ring (23) via a universal movable component (3) so that the angle of the protective housing (1) is adjustable.

2. The protective device for titanium welding as described in claim 1, characterized in that, The fastener (2) includes: Clamp (21) for mounting on the welding torch (4); The mounting sleeve (22) is located at the bottom of the clamp (21) and its diameter is larger than that of the welding torch (4). The mounting sleeve (22) is fitted onto the welding torch (4). A limiting ring (25) is threadedly connected to the bottom of the mounting sleeve (22); The mounting ring (23) is fitted onto the mounting sleeve (22), and a spring (24) is installed between the mounting ring (23) and the upper protruding ring of the mounting sleeve (22).

3. The protective device for titanium welding as described in claim 1, characterized in that, The omnidirectional active component (3) includes: A ball head (31) is provided on the mounting ring (23); A ball seat (32) is located at one end of the protective box (1) near the mounting ring (23), and the ball head (31) fits into the ball seat (32).

4. The protective device for titanium welding as described in claim 3, characterized in that, The protective box (1) has a mounting part (13) at one end near the mounting ring (23), and the ball seat (32) is mounted on the mounting part (13).

5. The protective device for titanium welding as described in claim 4, characterized in that, The ball seat (32) has connecting parts (321) on both sides, and a torsion spring (33) is sleeved on the connecting part (321). The torsion spring (33) is fixedly connected to the mounting part (13).

6. The protective device for titanium welding as described in claim 1, characterized in that, An air distribution plate (12) is provided at the air outlet.

7. The protective device for titanium welding as described in claim 6, characterized in that, The vent is located in the middle of the protective box (1) and extends along the welding direction.

8. The protective device for titanium welding as described in claim 7, characterized in that, The air distribution plate (12) is provided in multiple pieces, and the multiple air distribution plates (12) are arranged along the welding direction, and the air volume gradually increases along the welding direction; or The air distribution holes on the air distribution plate (12) gradually increase in size along the welding direction.

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