Gas protection device for titanium alloy laser welding

Abstract

The utility model discloses a gas protection device for titanium alloy laser welding, belongs to the technical field of laser welding, and aims to solve the problems that a bolt needs to be disassembled by means of an external tool, the disassembling process is complicated, the working efficiency is influenced, titanium alloy is melted, a certain amount of smoke dust is generated, and the welding safety is influenced. Comprising an upper air chamber with holes, a lower air chamber with holes, laser holes, a ventilation pipe, a connecting mechanism and a protection mechanism, the lower air chamber with holes is arranged below the upper air chamber with holes, air cavities are formed in the upper air chamber with holes and the lower air chamber with holes, and air spraying holes are evenly formed in the inner wall of the upper air chamber with holes and the inner wall of the lower air chamber with holes; by means of the connecting mechanism, the upper air chamber with the hole and the lower air chamber with the hole can be disassembled without the help of an external tool, a welded workpiece can be taken out conveniently, the upper air chamber with the hole and the lower air chamber with the hole can be disassembled conveniently, and the welding work efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser welding, and in particular relates to a gas protection device for laser welding of titanium alloys. Background Art

[0002] Titanium itself has excellent welding properties, but its chemical properties are very active in high-temperature environments, and it easily reacts with hydrogen, oxygen, nitrogen, and other gases in the air. Therefore, the welding of titanium alloy parts has strict technical requirements for welding conditions. It is necessary to use inert gas to protect the weld and the high-temperature area of ​​the base material to prevent the ingress of hydrogen, oxygen, nitrogen and other gases in the air, which may cause deterioration of the weld performance.

[0003] In the prior art, the patent announcement number CN217799701U is a gas protection device for laser welding of titanium alloy submersible shells. The above patent can provide stable protection for the welding of titanium alloy shell parts when in use. The circular perforated air chamber can ensure uniform protection during the welding process, overcoming the problems of short service life and poor protection effect of the original protective gas cover. It can achieve laser welding protection for titanium alloy submersible shells of different thicknesses and has a wide range of applications. However, in actual use, there are still the following shortcomings: from a practical point of view, after welding is completed, it is necessary to open the two perforated air chambers by removing the bolts to remove the welded material. The bolts need to be removed with the help of external tools. The disassembly process is relatively cumbersome, affecting work efficiency. Moreover, during titanium alloy laser welding, the titanium alloy melts and produces a certain amount of smoke and dust. These smoke and dust may contain harmful substances such as incompletely burned metal particles and oxides. Long-term inhalation of these smoke and dust may cause damage to the operator's respiratory system. The above device lacks a mechanism to absorb harmful smoke and dust, affecting welding safety.

[0004] Therefore, a gas protection device for titanium alloy laser welding is needed to solve the problems in the prior art that the bolts need to be disassembled with the help of external tools, the disassembly process is relatively cumbersome, affecting work efficiency, and the titanium alloy melts and produces a certain amount of smoke, which affects the safety of welding. Utility Model Content

[0005] The purpose of the utility model is to provide a gas protection device for titanium alloy laser welding to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas protection device for titanium alloy laser welding, comprising an upper perforated air chamber, a lower perforated air chamber, a laser hole, a vent pipe, a connecting mechanism and a protective mechanism, wherein the lower perforated air chamber is arranged below the upper perforated air chamber, and air cavities are provided inside the upper perforated air chamber and the lower perforated air chamber, and jet holes are evenly opened on the inner walls of the upper perforated air chamber and the lower perforated air chamber, the vent pipe is fixedly connected to the front of the upper perforated air chamber and the lower perforated air chamber, and the vent pipe is communicated with the air cavity, the connecting mechanism is arranged between the upper perforated air chamber and the lower perforated air chamber, and the protective mechanism is symmetrically arranged on the left and right sides of the upper perforated air chamber and the lower perforated air chamber.

[0007] The connecting mechanism consists of an upper fixed block, a fixed rod, a slider, a spring, a push block, an L-shaped connecting plate and a lower fixed block. The upper fixed block is fixedly connected to the front and rear sides of the upper perforated air chamber. The front of the upper fixed block is symmetrically provided with mounting grooves. The fixed rod is fixedly connected to the inside of the mounting groove. The slider is slidably connected to the outside of the fixed rod. The spring is fixedly connected between the slider and the side of the mounting groove, and the spring is sleeved on the outside of the fixed rod. The push block is fixedly connected to the front of the slider.

[0008] It should be noted in the solution that the L-shaped connecting plate is fixedly connected to the bottom of the slider, and the bottom surface of the mounting groove is provided with an opening adapted to the L-shaped connecting plate, and the bottom surface of the L-shaped connecting plate is provided with an arc surface.

[0009] It is further worth mentioning that the lower fixing block is symmetrically fixedly connected to the front and rear sides of the lower perforated air chamber, and the lower fixing block is arranged below the upper fixing block, and the interior of the lower fixing block is symmetrically provided with through grooves.

[0010] It should be further explained that the size of the through groove is larger than the bottom surface size of the L-shaped connecting plate.

[0011] As a preferred embodiment, the protective mechanism consists of a telescopic cover, a panel, a magnetic block and a connecting pipe. The telescopic cover is symmetrically fixedly connected to the left and right sides of the upper perforated air chamber or the lower perforated air chamber, the panel is fixedly connected to the other side of the telescopic cover, and the magnetic block is fixedly connected to the bottom surface of the panel.

[0012] As a preferred embodiment, an arc-shaped groove for the workpiece to pass through is opened in the middle of the panel.

[0013] As a preferred embodiment, the connecting pipe is fixedly connected to the bottom of the lower panel, and the other end of the connecting pipe is connected to the pump body.

[0014] Compared with the prior art, the gas protection device for titanium alloy laser welding provided by the present invention has at least the following beneficial effects:

[0015] (1) Through the provided connection mechanism, the upper air chamber with holes and the lower air chamber with holes can be disassembled without the aid of external tools, which is convenient for removing the welded workpiece and facilitating the disassembly and assembly of the upper air chamber with holes and the lower air chamber with holes, thereby improving the welding work efficiency.

[0016] (2) Through the protective mechanism, the length of the telescopic cover can be extended or retracted according to actual needs, thereby improving the practicality of the device. At the same time, the two magnetic blocks ensure that the upper and lower telescopic covers and panels remain closed, and the connecting pipe below collects the harmful gases generated, thereby maintaining a healthy and safe working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a front view structural diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the split structure of the utility model.

[0020] In the figure: 1. Upper air chamber with holes; 2. Lower air chamber with holes; 3. Laser hole; 4. Ventilation pipe; 5. Connecting mechanism; 6. Protective mechanism; 501. Upper fixing block; 502. Mounting groove; 503. Fixing rod; 504. Slider; 505. Spring; 506. Push block; 507. L-shaped connecting plate; 508. Lower fixing block; 509. Through groove; 601. Telescopic cover; 602. Panel; 603. Arc groove; 604. Magnetic block; 605. Connecting pipe. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the embodiments.

[0022] See also Figure 1-3 The utility model provides a gas protection device for titanium alloy laser welding, comprising an upper perforated air chamber 1, a lower perforated air chamber 2, a laser hole 3, a vent pipe 4, a connecting mechanism 5 and a protective mechanism 6. The lower perforated air chamber 2 is arranged below the upper perforated air chamber 1, and air cavities are provided inside the upper perforated air chamber 1 and the lower perforated air chamber 2. Jet holes are evenly opened on the inner walls of the upper perforated air chamber 1 and the lower perforated air chamber 2. The vent pipe 4 is fixedly connected to the front of the upper perforated air chamber 1 and the lower perforated air chamber 2, and the vent pipe 4 is communicated with the air cavity. The connecting mechanism 5 is arranged between the upper perforated air chamber 1 and the lower perforated air chamber 2, and the protective mechanism 6 is symmetrically arranged on the left and right sides of the upper perforated air chamber 1 and the lower perforated air chamber 2.

[0023] The connecting mechanism 5 consists of an upper fixed block 501, a fixed rod 503, a slider 504, a spring 505, a push block 506, an L-shaped connecting plate 507 and a lower fixed block 508. The upper fixed block 501 is fixedly connected to the front and rear sides of the upper perforated air chamber 1. The front of the upper fixed block 501 is symmetrically provided with mounting grooves 502. The fixed rod 503 is fixedly connected to the inside of the mounting groove 502. The slider 504 is slidably connected to the outside of the fixed rod 503. The spring 505 is fixedly connected between the slider 504 and the side of the mounting groove 502, and the spring 505 is sleeved on the outside of the fixed rod 503. The push block 506 is fixedly connected to the front of the slider 504.

[0024] Further as Figure 1 、 Figure 2 and Figure 3 As shown, it is worth noting that the L-shaped connecting plate 507 is fixedly connected to the bottom of the slider 504, and the bottom surface of the mounting groove 502 is provided with an opening adapted to the L-shaped connecting plate 507, and the bottom surface of the L-shaped connecting plate 507 is provided with an arc surface;

[0025] Through the provided arc surface, when the upper perforated air chamber 1 and the lower perforated air chamber 2 are connected, the through groove 509 squeezes the arc surface, causing the L-shaped connecting plate 507 to move until the L-shaped connecting plate 507 can pass downward through the through groove 509, and the elastic action of the spring 505 drives the slider 504 to reset, so that the L-shaped connecting plate 507 is stuck under the lower fixed block 508, fixing the connection between the upper fixed block 501 and the lower fixed block 508.

[0026] Further as Figure 1 、 Figure 2 and Figure 3 As shown, it is worth mentioning that the lower fixing block 508 is symmetrically fixedly connected to the front and rear sides of the lower perforated air chamber 2, and the lower fixing block 508 is arranged below the upper fixing block 501, and the interior of the lower fixing block 508 is symmetrically provided with through grooves 509.

[0027] Further as Figure 1 、 Figure 2 and Figure 3 As shown, it is worth noting that the size of the through slot 509 is larger than the bottom surface size of the L-shaped connecting plate 507;

[0028] By setting the L-shaped connecting plate 507 to completely pass through the interior of the through slot 509, the limitation between the L-shaped connecting plate 507 and the lower fixing block 508 can be released, making it easy to disassemble the upper perforated air chamber 1 and the lower perforated air chamber 2.

[0029] According to the above working process, it can be seen that: through the provided connecting mechanism 5, the upper perforated air chamber 1 and the lower perforated air chamber 2 can be disassembled without the aid of external tools, which is convenient for removing the welded workpiece, and convenient for disassembly and assembly of the upper perforated air chamber 1 and the lower perforated air chamber 2, thereby improving the welding work efficiency.

[0030] Further as Figure 1 、 Figure 2 and Figure 3 As shown, it is worth mentioning that the protective mechanism 6 is composed of a telescopic cover 601, a panel 602, a magnetic block 604 and a connecting pipe 605. The telescopic cover 601 is symmetrically fixedly connected to the left and right sides of the upper perforated air chamber 1 or the lower perforated air chamber 2, the panel 602 is fixedly connected to the other side of the telescopic cover 601, and the magnetic block 604 is fixedly connected to the bottom surface of the panel 602.

[0031] Further as Figure 1 、 Figure 2 and Figure 3 As shown, it is worth noting that the middle portion of the panel 602 is provided with an arc-shaped slot 603 for the workpiece to pass through;

[0032] The arc-shaped groove 603 can allow the workpiece to be welded to pass through, thereby improving the practicality of the mechanism.

[0033] Further as Figure 1 、 Figure 2 and Figure 3 As shown, it is worth noting that the connecting pipe 605 is fixedly connected to the bottom of the lower panel 602, and the other end of the connecting pipe 605 is connected to the pump body;

[0034] The provided pump body can collect the gas flowing into the interior of the panel 602 and the generated toxic smoke and dust, thereby improving the safety performance of the device.

[0035] This solution has the following working process: when in use, the workpieces to be welded on both sides are in contact with the middle of the upper and lower perforated air chambers 1 and 2 through the arc grooves 603 on both sides, and then the panel 602 is manually pulled to drive the telescopic cover 601 to retract, and the upper and lower panels 602 are kept closed by the magnetic blocks 604 on both sides to protect the welding process, and then the laser is welded to the two workpieces inside through the laser hole 3, and at the same time, the inert gas is input into the upper and lower perforated air chambers 1 and 2 through the vent pipe 4, and then ejected through the jet hole to weld the welding position. The welding parts are protected by the inert gas, and the smoke generated by welding is blown into the inside of the telescopic covers 601 on both sides, and then the external pump body is started to collect the smoke inside the telescopic covers 601 to prevent the smoke from volatilizing into the external working environment and reducing pollution to the environment. After the welding is completed, the push blocks 506 on both sides are pushed, and the L-shaped connecting plate 507 below is driven to move by the slider 504 until the bottom surface size of the L-shaped connecting plate 507 can completely pass through the through slot 509, and the upper perforated air chamber 1 is removed upwards, and the welded workpiece can be taken away, thereby improving the welding efficiency.

[0036] In summary: through the provided connecting mechanism 5, the upper perforated air chamber 1 and the lower perforated air chamber 2 can be disassembled without the aid of external tools, which facilitates the removal of the welded workpiece and the disassembly and assembly of the upper perforated air chamber 1 and the lower perforated air chamber 2, thereby improving the welding work efficiency; through the provided protective mechanism 6, the length of the telescopic cover 601 can be extended or retracted according to actual needs, thereby improving the practicality of the device. At the same time, the two magnetic blocks 604 ensure that the upper and lower telescopic covers 601 and the panel 602 remain closed, and the lower connecting pipe 605 collects the harmful gases generated, thereby maintaining a healthy and safe working environment.

Claims

1. A gas shielding device for titanium alloy laser welding, comprising an upper perforated gas chamber (1), a lower perforated gas chamber (2), a laser hole (3), a vent pipe (4), a connecting mechanism (5) and a protective mechanism (6), characterized in that: The lower perforated air chamber (2) is arranged below the upper perforated air chamber (1), and air cavities are arranged inside the upper perforated air chamber (1) and the lower perforated air chamber (2). Inner walls of the upper perforated air chamber (1) and the lower perforated air chamber (2) are evenly provided with jet holes. The vent pipe (4) is fixedly connected to the front of the upper perforated air chamber (1) and the lower perforated air chamber (2), and the vent pipe (4) is connected to the air cavity. The connecting mechanism (5) is arranged between the upper perforated air chamber (1) and the lower perforated air chamber (2). The protective mechanism (6) is symmetrically arranged on the left and right sides of the upper perforated air chamber (1) and the lower perforated air chamber (2). The connecting mechanism (5) is composed of an upper fixed block (501), a fixed rod (503), a slider (504), a spring (505), a push block (506), an L-shaped connecting plate (507) and a lower fixed block (508). The upper fixed block (501) is fixedly connected to the front and rear sides of the upper perforated air chamber (1). The front of the upper fixed block (501) is symmetrically provided with mounting grooves (502). The fixed rod (503) is fixedly connected to the inside of the mounting groove (502). The slider (504) is slidably connected to the outside of the fixed rod (503). The spring (505) is fixedly connected between the slider (504) and the side of the mounting groove (502), and the spring (505) is sleeved on the outside of the fixed rod (503). The push block (506) is fixedly connected to the front of the slider (504).

2. The gas shielding device for titanium alloy laser welding according to claim 1, characterized in that: The L-shaped connecting plate (507) is fixedly connected to the bottom of the slider (504), and the bottom surface of the mounting groove (502) is provided with an opening adapted to the L-shaped connecting plate (507), and the bottom surface of the L-shaped connecting plate (507) is provided with an arc surface.

3. The gas shielding device for titanium alloy laser welding according to claim 2, characterized in that: The lower fixing block (508) is symmetrically fixedly connected to the front and rear sides of the lower perforated air chamber (2), and the lower fixing block (508) is arranged below the upper fixing block (501). The lower fixing block (508) is symmetrically provided with through slots (509) inside.

4. The gas shielding device for titanium alloy laser welding according to claim 3, characterized in that: The size of the through slot (509) is larger than the bottom surface size of the L-shaped connecting plate (507).

5. The gas shielding device for titanium alloy laser welding according to claim 4, characterized in that: The protective mechanism (6) is composed of a telescopic cover (601), a panel (602), a magnetic block (604) and a connecting pipe (605); the telescopic cover (601) is symmetrically fixedly connected to the left and right sides of the upper perforated air chamber (1) or the lower perforated air chamber (2); the panel (602) is fixedly connected to the other side of the telescopic cover (601); and the magnetic block (604) is fixedly connected to the bottom surface of the panel (602).

6. The gas shielding device for titanium alloy laser welding according to claim 5, characterized in that: The middle of the panel (602) is provided with an arc-shaped groove (603) for a workpiece to pass through.

7. The gas shielding device for titanium alloy laser welding according to claim 6, characterized in that: The connecting pipe (605) is fixedly connected to the lower side of the lower panel (602), and the other end of the connecting pipe (605) is connected to the pump body.

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