Vacuum nitrogen protection device

Abstract

The application discloses a vacuum nitrogen protection device, and particularly relates to the technical field of welding protection, which comprises a device base, the top ends of the device base are fixedly provided with supporting vertical frames on both sides, the top portions of the two supporting vertical frames are fixedly provided with a device top frame, the two sides of the device top frame are fixedly provided with a group of lifting cylinders, the driving ends of one group of the lifting cylinders are fixedly provided with a first nitrogen protection frame, the driving ends of the other group of the lifting cylinders are fixedly provided with a second nitrogen protection frame, a gas guide mechanism is arranged between the first nitrogen protection frame and the second nitrogen protection frame, and the top end of the device base is fixedly provided with two groups of symmetrically-distributed first linear electric rails, the first nitrogen protection frame and the second nitrogen protection frame are arranged, the supporting mechanism and the welding assembly are used in cooperation, the effective vacuum nitrogen protection welding can be continuously performed on multiple groups of welding components, and the overall welding efficiency of the welding components is improved.

Description

Technical Field

[0001] This invention relates to the field of welding protection technology, specifically a vacuum nitrogen protection device. Background Technology

[0002] Air separation gases refer to various gases extracted from the air through air separation technology, mainly including oxygen, nitrogen, argon, etc. These gases have wide applications in industrial production and daily life. Nitrogen can be used as a protective gas in chemical production to prevent oxidation reactions. In the food industry, nitrogen is used in packaging to extend the shelf life of food. In addition, nitrogen is also used as a welding shielding gas in the electronics manufacturing industry and as a cooling medium in metal heat treatment. Nitrogen is used for protection during welding mainly to prevent oxidation of metals and other adverse reactions during the welding process. Nitrogen is an inert gas that can effectively isolate the welding area from oxygen in the air, reducing defects generated during welding. Especially when welding certain high alloy materials or stainless steel, the quality and corrosion resistance of the weld joint are improved.

[0003] Traditional nitrogen protection for welding typically involves connecting nitrogen to the welding joint and continuously spraying nitrogen at the joint to protect the weld. However, this process wastes nitrogen as it is continuously released into the air. Therefore, continuous nitrogen release is required during welding, increasing welding costs. To address these issues, we propose a vacuum nitrogen protection device. Summary of the Invention

[0004] The purpose of this invention is to provide a vacuum nitrogen protection device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a vacuum nitrogen protection device, comprising a device base, with supporting longitudinal frames fixedly installed on both sides of the top of the device base, and a device top frame fixedly installed on the top of the two supporting longitudinal frames. A set of lifting cylinders is fixedly installed on both sides of the device top frame, with a first nitrogen protection frame fixedly installed at the drive end of one set of lifting cylinders and a second nitrogen protection frame fixedly installed at the drive end of the other set of lifting cylinders. A gas guiding mechanism is provided between the first and second nitrogen protection frames. Two symmetrically distributed first linear electric rails are fixedly installed on the top of the device base, with two supporting mechanisms fixedly installed at the drive end of each of the first linear electric rails. The top of each supporting mechanism is movably engaged with the bottom of the corresponding first and second nitrogen protection frames. Welding components are fixedly installed in both the first and second nitrogen protection frames.

[0006] Preferably, the top of the first nitrogen protection frame is fixedly equipped with a first exhaust head and a first air inlet head, and the top of the second nitrogen protection frame is fixedly equipped with a second exhaust head and a second air inlet head. Exhaust pipes are fixedly installed on opposite sides of both the first and second nitrogen protection frames. A first valve is fixedly installed at the end of each exhaust pipe. Vacuum pumps are fixedly installed on both sides of the top of the device base. A suction pipe is fixedly installed at the suction end of each vacuum pump. The end of the suction pipe away from the vacuum pump and the end corresponding to the first valve are fixedly installed. A gas pressure detector and a gas concentration monitor are fixedly installed on both the first and second nitrogen protection frames.

[0007] Preferably, the gas guiding mechanism includes a first gas guiding component and a second gas guiding component. The first gas guiding component includes a second valve and a third valve. The second valve is fixedly installed at the end of a first exhaust head, and the third valve is fixedly installed at the end of a second air inlet head. A first suction pump is fixedly installed at the end of the third valve away from the second air inlet head. A gas purification component is fixedly installed at the end of the second valve away from the first exhaust head. A gas concentration detector is fixedly installed at the end of the gas purification component away from the second valve. A first tee pipe is fixedly installed at the end of the gas concentration detector away from the gas purification component. A first connector is fixedly installed at the end of the first tee pipe away from the gas concentration detector. A second... A first gas guide hose is fixedly installed between the first and second connectors. A fourth valve is fixedly installed at the end of the first three-way pipe away from the gas concentration detector and the first connector. A second gas guide hose is fixedly installed at the end of the fourth valve away from the first three-way pipe. The structure of the second gas guide component is the same as that of the first gas guide component. The second gas guide component is fixedly installed at the end of the second exhaust head through the second valve. The second gas guide component is fixedly installed at the end of the second air inlet head through the third valve. A second three-way pipe is fixedly installed between the second gas guide hose in the first gas guide component and the second gas guide hose in the second gas guide component. The second three-way pipe is fixedly snapped into the middle of the top frame of the device. A second air pump is fixedly installed at the top of the second three-way pipe.

[0008] Preferably, the gas purification component includes a purification outer cylinder, with connecting pipes fixedly installed at both ends of the purification outer cylinder. The ends of the two connecting pipes are respectively fixedly installed at the ends of the second valve and the gas concentration detector. A purification inner tube is movably mounted in the purification outer cylinder, and a gas purification core is fixedly mounted in the purification inner tube.

[0009] Preferably, a nitrogen generating device is fixedly installed at the top center of the device base, a gas supply pipe is fixedly installed at the output port of the nitrogen generating device, and the end of the gas supply pipe and the top of the second air pump are fixedly installed.

[0010] Preferably, the support mechanism includes a support base, with a sealing frame integrally formed at the top center of the support base. The sealing frame is movably engaged with the bottom of the corresponding first nitrogen protection frame and the second nitrogen protection frame. A sealing gasket is provided on the upper surface of the support base, and the upper surface of the sealing gasket contacts the lower surface of the corresponding first nitrogen protection frame and the second nitrogen protection frame. A bearing is fixedly mounted in the middle of the support base, and a rotating shaft is fixedly mounted in the middle of the bearing. A platform is fixedly installed at the top of the rotating shaft, and a driven gear ring is fixedly installed at the bottom of the rotating shaft. A drive gear is meshed with the outer side of the driven gear ring, and a drive shaft is fixedly installed in the middle of the drive gear. The drive shaft is rotatably mounted at the bottom end of the support base.

[0011] Preferably, a first cover is fixedly installed at the bottom end of the support base, a drive motor is fixedly installed at the bottom end of the first cover, and the drive end of the drive motor and the bottom end of the drive shaft are fixedly installed.

[0012] Preferably, a second cover is fixedly installed at the bottom of the first cover, the drive motor is located in the second cover, and the support mechanism is fixedly installed at the drive end of the first linear electric rail through the second cover.

[0013] Preferably, the welding assembly includes two second linear rails. The welding assembly is fixedly installed inside the first nitrogen protection frame and the second nitrogen protection frame respectively via the second linear rails. A third linear rail is fixedly installed at the drive end of the two second linear rails. A cylinder bracket is fixedly installed at the drive end of the third linear rail. An electric lifting rod is fixedly installed on the cylinder bracket. A rotary cylinder is fixedly installed at the drive end of the electric lifting rod. A mounting bracket is fixedly installed at the drive end of the rotary cylinder. A welding end is fixedly installed at the end of the mounting bracket.

[0014] Preferably, observation windows are fixedly installed on the sides of both the first nitrogen protection frame and the second nitrogen protection frame.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. By setting up a first nitrogen protection frame and a second nitrogen protection frame, and using a support mechanism and welding components in conjunction, multiple welding components can be continuously and effectively vacuum-protected for welding, thereby improving the overall welding efficiency of the welding components.

[0017] 2. By setting up a first nitrogen protection frame and a second nitrogen protection frame, and using a support mechanism and a gas guiding mechanism in conjunction, nitrogen can be recycled and purified multiple times between the first nitrogen protection frame and the second nitrogen protection frame, and the nitrogen can be reused multiple times, preventing nitrogen from being directly discharged into the air and wasting it.

[0018] 3. By setting up a nitrogen generation device, if the nitrogen concentration in the first nitrogen protection frame or the second nitrogen protection frame is insufficient during the cycle, nitrogen can be added to the first nitrogen protection frame or the second nitrogen protection frame by using the nitrogen generation device. 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 these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the structural connection from another angle of the present invention.

[0022] Figure 3 This is a schematic diagram showing the structural connection of the first nitrogen protection frame, the second nitrogen protection frame, and the gas guiding mechanism in this invention.

[0023] Figure 4 This is a partial structural connection diagram of the air guiding mechanism in this invention.

[0024] Figure 5 This is a schematic diagram of the gas purification component in this invention.

[0025] Figure 6 This is a schematic diagram of the structural connection between the first nitrogen protection frame and the support mechanism in this invention.

[0026] Figure 7 This is a schematic diagram of the welding assembly in this invention.

[0027] Figure 8 This is a schematic diagram of the support mechanism in this invention.

[0028] In the diagram: 1. Device base; 11. Supporting longitudinal frame; 12. Device top frame; 13. Lifting cylinder; 14. First linear electric rail; 2. First nitrogen protection frame; 21. First exhaust head; 22. First air inlet head; 201. Observation window; 23. Exhaust pipe; 231. First valve; 24. Gas pressure detector; 241. Gas concentration monitor; 3. Second nitrogen protection frame; 31. Second exhaust head; 32. Second air inlet head; 4. Gas guiding mechanism; 5. Supporting mechanism; 6. Nitrogen generating equipment; 61. Gas delivery pipeline; 7. Vacuum pump; 71. Gas extraction pipeline; 8. Welding assembly; 41. First gas guiding component; 42. Second gas guiding component; 43. Second valve; 431. Third valve; 44. First gas extraction pump; 45. Gas purification component; 46. Gas concentration detector; 47. 48. First T-connector; 481. Second connector; 482. First air guide hose; 49. Fourth valve; 491. Second air guide hose; 410. Second T-connector; 411. Second air pump; 451. Purification outer cylinder; 452. Connecting pipe; 453. Purification inner pipe; 454. Gas purification core; 51. Support base; 511. Sealing frame; 512. Sealing gasket; 52. Bearing; 521. Rotating shaft; 522. Driven gear ring; 523. Drive shaft; 524. Drive gear; 53. Display platform; 54. First cover; 55. Drive motor; 56. Second cover; 81. Second linear electric rail; 82. Third linear electric rail; 83. Cylinder bracket; 84. Electric lifting rod; 85. Rotary cylinder; 86. Mounting bracket; 87. Welded end. Detailed Implementation

[0029] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example: Figure 1-8As shown, the present invention provides a vacuum nitrogen protection device, including a device base 1. Supporting longitudinal frames 11 are fixedly installed on both sides of the top of the device base 1. A device top frame 12 is fixedly installed on the top of the two supporting longitudinal frames 11. A set of lifting cylinders 13 are fixedly installed on both sides of the device top frame 12. A first nitrogen protection frame 2 is fixedly installed at the driving end of one set of lifting cylinders 13, and a second nitrogen protection frame 3 is fixedly installed at the driving end of the other set of lifting cylinders 13. The first nitrogen protection frame 2 and the second nitrogen protection frame 3 are driven to rise and fall by controlling the opening of the lifting cylinders 13. A gas guiding mechanism 4 is provided between the first nitrogen protection frame 2 and the second nitrogen protection frame 3. Two symmetrically distributed first linear electric rails 14 are fixedly installed on the top of the device base 1. Two support mechanisms 5 are fixedly installed at the drive end of each of the first linear electric rails 14. The top of the support mechanism 5 is movably engaged with the bottom of the corresponding first nitrogen protection frame 2 and second nitrogen protection frame 3. By setting the support mechanism 5 and the first nitrogen protection frame 2 and second nitrogen protection frame 3 to work together, it is convenient to place the welding parts in the support mechanism 5 and the first nitrogen protection frame 2 or the support mechanism 5 and the second nitrogen protection frame 3 for vacuum nitrogen protection welding. Furthermore, by setting two support mechanisms 5 at the drive end of each set of first linear electric rails 14, it is convenient that when one support mechanism 5 and the first nitrogen protection frame 2 and the second nitrogen protection frame 3 work together, the other support mechanism 5 is exposed on the outside for loading or unloading the welding parts. Welding components 8 are fixedly installed in the first nitrogen protection frame 2 and the second nitrogen protection frame 3.

[0031] The top of the first nitrogen protection frame 2 is fixedly equipped with a first exhaust head 21 and a first air inlet head 22. The top of the second nitrogen protection frame 3 is fixedly equipped with a second exhaust head 31 and a second air inlet head 32. Exhaust pipes 23 are fixedly installed on opposite sides of the first nitrogen protection frame 2 and the second nitrogen protection frame 3. A first valve 231 is fixedly installed at the end of each exhaust pipe 23. Vacuum pumps 7 are fixedly installed on both sides of the top of the device base 1. A suction pipe 71 is fixedly installed at the suction end of each vacuum pump 7. The end of the suction pipe 71 away from the vacuum pump 7 and the end corresponding to the first valve 231 are fixedly installed. A gas pressure detector 24 and a gas concentration monitor 241 are fixedly installed on both the first nitrogen protection frame 2 and the second nitrogen protection frame 3. Observation windows 201 are fixedly installed on the sides of both the first nitrogen protection frame 2 and the second nitrogen protection frame 3. The vacuum nitrogen protection welding status of the welding components in the first nitrogen protection frame 2 and the second nitrogen protection frame 3 can be observed through the observation windows 201.

[0032] The support mechanism 5 includes a support base 51. A sealing frame 511 is integrally formed at the top center of the support base 51. The sealing frame 511 is movably engaged with the bottom of the corresponding first nitrogen protection frame 2 and second nitrogen protection frame 3. A sealing gasket 512 is provided on the upper surface of the support base 51. The upper surface of the sealing gasket 512 contacts the lower surface of the corresponding first nitrogen protection frame 2 and second nitrogen protection frame 3, respectively, to seal between the support base 51 and the corresponding first nitrogen protection frame 2 and second nitrogen protection frame 3. A bearing 52 is fixedly mounted in the middle of the support base 51. A rotating shaft 521 is fixedly mounted in the middle of the bearing 52. A platform 53 is fixedly installed at the top of the rotating shaft 521. In use, the component to be welded can be positioned and placed on the upper limit of the platform 53 for subsequent hollow nitrogen-protected welding. A driven gear is fixedly installed at the bottom of the rotating shaft 521. A drive gear 524 is meshed with the outer side of the driven gear ring 522. A drive shaft 523 is fixedly installed in the middle of the drive gear 524 and is rotatably mounted on the bottom end of the support base 51. A first cover 54 is fixedly installed on the bottom end of the support base 51, and a drive motor 55 is fixedly installed on the bottom end of the first cover 54. The drive end of the drive motor 55 is fixedly installed on the bottom end of the drive shaft 523. A second cover 56 is fixedly installed on the bottom end of the first cover 54. The drive motor 55 is located in the second cover 56. The support mechanism 5 is fixedly installed on the drive end of the first linear electric rail 14 through the second cover 56. By controlling the start of the drive motor 55, the drive shaft 523 and the drive gear 524 drive the driven gear ring 522 and the rotating shaft 521 to rotate, thereby driving the platform 53 to rotate and adjusting the angle of the welding parts for subsequent welding.

[0033] By controlling the vacuum pump 7 at the position of the first nitrogen protection frame 2 or the second nitrogen protection frame 3, the first nitrogen protection frame 2 or the second nitrogen protection frame 3 can be evacuated. The gas pressure in the first nitrogen protection frame 2 or the second nitrogen protection frame 3 is detected by the gas pressure detector 24, and the gas concentration in the first nitrogen protection frame 2 or the second nitrogen protection frame 3 is detected by the gas concentration monitor 241, until the first nitrogen protection frame 2 or the second nitrogen protection frame 3 is evacuated.

[0034] The gas guiding mechanism 4 includes a first gas guiding component 41 and a second gas guiding component 42. The first gas guiding component 41 includes a second valve 43 and a third valve 431. The second valve 43 is fixedly installed at the end of the first exhaust head 21, and the third valve 431 is fixedly installed at the end of the second air inlet head 32. A first suction pump 44 is fixedly installed at the end of the third valve 431 away from the second air inlet head 32. A gas purification component 45 is fixedly installed at the end of the second valve 43 away from the first exhaust head 21. A gas concentration detector 46 is fixedly installed at the end of the gas purification component 45 away from the second valve 43. By setting the gas concentration detector 46, the concentration of purified nitrogen in the first gas guiding component 41 or the second gas guiding component 42 can be detected so that nitrogen can be replenished immediately. A first tee pipe 47 is fixedly installed at the end of the gas concentration detector 46 away from the gas purification component 45. A first connector 48 is fixedly installed at the end of the first tee pipe 47 away from the gas concentration detector 46. The first suction pump 44 is fixedly installed at the end of the first gas guiding component 44 away from the gas purification component 45. A second connector 481 is fixedly installed at one end of the third valve 431. A first gas guide hose 482 is fixedly installed between the first connector 48 and the second connector 481. A fourth valve 49 is fixedly installed at the end of the first three-way pipe 47 away from the gas concentration detector 46 and the first connector 48. A second gas guide hose 491 is fixedly installed at the end of the fourth valve 49 away from the first three-way pipe 47. The structure of the second gas guide component 42 is the same as that of the first gas guide component 41. The second gas guide component 42 is fixedly installed at the end of the second exhaust head 31 through the second valve 43. The second gas guide component 42 is fixedly installed at the end of the second air inlet head 32 through the third valve 431. A second three-way pipe 410 is fixedly installed between the second gas guide hose 491 in the first gas guide component 41 and the second gas guide hose 491 in the second gas guide component 42. The second three-way pipe 410 is fixedly snapped into the middle of the device top frame 12. A second air pump 411 is fixedly installed at the top of the second three-way pipe 410.

[0035] A nitrogen generating device 6 is fixedly installed at the top center of the device base 1. A gas transmission pipe 61 is fixedly installed at the output port of the nitrogen generating device 6. The end of the gas transmission pipe 61 and the top of the second vacuum pump 411 are fixedly installed.

[0036] Initially, there is no nitrogen in either the first nitrogen protection frame 2 or the second nitrogen protection frame 3. At this time, the first nitrogen protection frame 2 is used to perform vacuum nitrogen protection welding on the welding parts. The first nitrogen protection frame 2 is evacuated. Then, the first vacuum pump 44, the third valve 431 and the fourth valve 49 in the second gas guide 42 are turned on, and the nitrogen generation device 6 and the second vacuum pump 411 are turned on. After the nitrogen is generated, it is introduced into the first nitrogen protection frame 2 through the gas pipeline 61, the second three-way pipe 410, the second gas guide hose 491 in the second gas guide 42, the first three-way pipe 47 and the first gas guide hose 482 until the first nitrogen protection frame 2 is filled with nitrogen of a suitable concentration.

[0037] The gas purification component 45 includes a purification outer cylinder 451, with connecting pipes 452 fixedly installed at both ends of the outer cylinder 451. The ends of the two connecting pipes 452 are respectively fixedly installed at the ends of the second valve 43 and the gas concentration detector 46. A purification inner tube 453 is movably mounted in the purification outer cylinder 451, and a gas purification core 454 is fixedly mounted in the purification inner tube 453. After the welding of the welding components in the first nitrogen protection frame 2 is completed, some welding waste gas will be generated. When the nitrogen and welding waste gas are subsequently introduced into the second nitrogen protection frame 3 for recycling through the first gas guide 41, they are effectively purified by the gas purification core 454 in the gas purification component 45. The welding waste gas is adsorbed on the gas purification core 454. In this process, pure nitrogen is recycled and circulated into the second nitrogen protection frame 3 for reuse, preventing nitrogen from being directly released into the air and wasting it. At the same time, after the welding of the components in the second nitrogen protection frame 3 is completed, some welding waste gas will be generated. When the nitrogen and welding waste gas are subsequently circulated into the first nitrogen protection frame 2 through the second gas guide 42, they are effectively purified by the gas purification core 454 in the gas purification component 45. The welding waste gas is adsorbed in the gas purification core 454, and the pure nitrogen is recycled and circulated into the first nitrogen protection frame 2 for multiple uses, further preventing nitrogen waste and effectively improving the welding effect of the welding components and the use effect of the vacuum nitrogen protection device.

[0038] During the cycle, if the nitrogen concentration in the first nitrogen protection frame 2 or the second nitrogen protection frame 3 is insufficient, nitrogen can be replenished to the first nitrogen protection frame 2 or the second nitrogen protection frame 3 by using the nitrogen generating device 6.

[0039] The welding assembly 8 includes two second linear electric rails 81. The welding assembly 8 is fixedly installed inside the first nitrogen protection frame 2 and the second nitrogen protection frame 3 respectively via the second linear electric rails 81. A third linear electric rail 82 is fixedly installed at the drive end of the two second linear electric rails 81. A cylinder bracket 83 is fixedly installed at the drive end of the third linear electric rail 82. An electric lifting rod 84 is fixedly installed on the cylinder bracket 83. A rotary cylinder 85 is fixedly installed at the drive end of the electric lifting rod 84. A mounting bracket 86 is fixedly installed at the drive end of the rotary cylinder 85. The end of the mounting bracket 86 is fixed... A welding end 87 is fixedly installed. By controlling the opening of the second linear electric rail 81, the welding end 87 is driven to move along the X-axis; by controlling the opening of the third linear electric rail 82, the welding end 87 is driven to move along the Y-axis; by controlling the opening of the cylinder bracket 83, the welding end 87 is driven to move along the Z-axis; and by controlling the opening of the rotary cylinder 85, the welding end 87 is driven to rotate. This allows for flexible adjustment of the position and angle of the welding end 87, enabling flexible vacuum nitrogen-protected welding of the welding components and improving the welding effect and quality.

[0040] Working principle: In use, the first nitrogen protection frame 2 is used to perform vacuum nitrogen protection welding on the welding parts. After positioning the two welding parts to be welded, they are placed on the upper limit of the platform 53 of one of the positions of the first nitrogen protection frame 2. Then, the first linear electric rail 14 at the position of the first nitrogen protection frame 2 is controlled to drive the corresponding platform 53 to move horizontally, so that the platform 53 moves to the bottom of the first nitrogen protection frame 2. At this time, the other platform 53 is misaligned with the first nitrogen protection frame 2, which makes it easy to place the next set of welding parts to wait for welding.

[0041] Subsequently, the lifting cylinder 13 at the position of the first nitrogen protection frame 2 is opened, driving the first nitrogen protection frame 2 to descend until the sealing clip 511 is movably engaged with the bottom of the corresponding first nitrogen protection frame 2, so that the upper surface of the sealing gasket 512 and the lower surface of the corresponding first nitrogen protection frame 2 come into contact, thus sealing the support base 51 and the corresponding first nitrogen protection frame 2.

[0042] At this time, a group of welding parts to be welded can be positioned and placed at the upper limit of the platform 53 of one of the positions of the second nitrogen protection frame 3, and the corresponding first linear electric rail 14 can be controlled to drive the platform 53 to move to the lower part of the second nitrogen protection frame 3, and the second nitrogen protection frame 3 can be controlled to descend and the corresponding platform 53 can be sealed.

[0043] Subsequently, the vacuum pump 7 at the position of the first nitrogen protection frame 2 or the second nitrogen protection frame 3 is activated to evacuate the first nitrogen protection frame 2 or the second nitrogen protection frame 3. The gas pressure in the first nitrogen protection frame 2 or the second nitrogen protection frame 3 is detected by the gas pressure detector 24, and the gas concentration in the first nitrogen protection frame 2 or the second nitrogen protection frame 3 is detected by the gas concentration monitor 241, until the first nitrogen protection frame 2 or the second nitrogen protection frame 3 is evacuated.

[0044] Subsequently, the first vacuum pump 44, the third valve 431 and the fourth valve 49 in the second air guide component 42 are turned on, and the nitrogen generating device 6 and the second vacuum pump 411 are turned on. After the nitrogen is generated, it is introduced into the first nitrogen protection frame 2 through the gas delivery pipe 61, the second three-way pipe 410, the second air guide hose 491 in the second air guide component 42, the first three-way pipe 47 and the first air guide hose 482, until the first nitrogen protection frame 2 is filled with nitrogen of a suitable concentration.

[0045] Subsequently, the welding component 8 in the first nitrogen protection frame 2 is activated by controlling the activation of the second linear electric rail 81 to drive the welding end 87 to move along the X-axis, the welding end 87 to move along the Y-axis by controlling the activation of the third linear electric rail 82, the welding end 87 to move along the Z-axis by controlling the activation of the cylinder bracket 83, and the welding end 87 to rotate by controlling the activation of the rotary cylinder 85. This allows for flexible adjustment of the position and angle of the welding end 87, enabling flexible vacuum nitrogen protection welding of the welding components. The vacuum nitrogen protection welding status of the welding components in the first nitrogen protection frame 2 and the second nitrogen protection frame 3 is observed through the observation window 201.

[0046] After the welding of the components in the first nitrogen protection frame 2 is completed, some welding waste gas will be generated. Then, the second valve 43, the third valve 431 and the first air pump 44 in the first air guide 41 are opened. The nitrogen and welding waste gas in the first nitrogen protection frame 2 are introduced into the second nitrogen protection frame 3 for recycling through the gas purification component 45, the gas concentration detector 46, the first three-way pipe 47 and the first air guide hose 482 in the first air guide 41. The gas is effectively purified by the gas purification core 454 in the gas purification component 45. The welding waste gas is adsorbed in the gas purification core 454. The pure nitrogen is recycled and introduced into the second nitrogen protection frame 3 for reuse, preventing nitrogen from being directly discharged into the air and wasting it.

[0047] After the nitrogen in the first nitrogen protection frame 2 is completely discharged, the second valve 43, the third valve 431 and the first vacuum pump 44 in the first gas guide 41 are closed. The first nitrogen protection frame 2 is then raised and the two support bases 51 at the first nitrogen protection frame 2 are moved horizontally. The other support base 51, after the next set of welding components has been placed, is moved to the bottom of the first nitrogen protection frame 2. The first nitrogen protection frame 2 and the corresponding support base 51 are lowered again to seal them and the first nitrogen protection frame 2 is evacuated again. The next set of welding components is then loaded. After the previous set of welding components is completed at the position of the first nitrogen protection frame 2, the welding components and the first nitrogen protection frame 2 are misaligned to facilitate unloading. At the same time, another set of welding components to be welded is placed on the support base 51 to continue subsequent welding. This enables continuous and uninterrupted vacuum nitrogen protection welding of the welding components, improving the overall welding efficiency of the welding components.

[0048] After the welding of the components in the second nitrogen protection frame 3 is completed, the nitrogen is introduced into the first nitrogen protection frame 2 through the second gas guide 42 for recycling. It is effectively purified by the gas purification core 454 in the gas purification component 45. The welding waste gas is adsorbed in the gas purification core 454, and the pure nitrogen is recycled and introduced into the first nitrogen protection frame 2 for multiple uses, further preventing nitrogen waste and effectively improving the welding effect of the welding components and the use effect of the vacuum nitrogen protection device.

[0049] The welding components on the support base 51 at the second nitrogen protection frame 3 are fed, unloaded, and reloaded in the same manner as the welding components on the support base 51 at the first nitrogen protection frame 2. This enables continuous and uninterrupted vacuum nitrogen protection welding of the welding components, thereby improving the overall welding efficiency of the welding components.

[0050] During the cycle, the concentration of purified nitrogen in the first gas guide 41 or the second gas guide 42 is detected by the gas concentration detector 46 using the first gas guide 41 and the second gas guide 42. If the nitrogen concentration in the first nitrogen protection frame 2 or the second nitrogen protection frame 3 is insufficient, nitrogen can be directly replenished to the first nitrogen protection frame 2 or the second nitrogen protection frame 3 using the nitrogen generating device 6. This only requires controlling the opening of the fourth valve 49, the first suction pump 44, and the third valve 43 in the first gas guide 41. 1. The nitrogen generating device 6 introduces nitrogen into the second nitrogen protection frame 3 through the first gas guide 41 for nitrogen replenishment, or by controlling the opening of the fourth valve 49, the first vacuum pump 44 and the third valve 431 in the second gas guide 42, the nitrogen generating device 6 introduces nitrogen into the first nitrogen protection frame 2 through the second gas guide 42 for nitrogen replenishment, and the nitrogen concentration in the first nitrogen protection frame 2 and the second nitrogen protection frame 3 is monitored by the gas concentration monitor 241 in the first nitrogen protection frame 2 and the second nitrogen protection frame 3.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vacuum nitrogen protection device, comprising a device base (1), characterized in that: The device base (1) has two fixed support frames (11) on both sides of the top. The device top frame (12) is fixedly installed on the top of the two support frames (11). A set of lifting cylinders (13) is fixedly installed on both sides of the device top frame (12). The driving end of one set of lifting cylinders (13) is fixedly installed with a first nitrogen protection frame (2). The driving end of the other set of lifting cylinders (13) is fixedly installed with a second nitrogen protection frame (3). A gas guiding mechanism (4) is provided between the first nitrogen protection frame (2) and the second nitrogen protection frame (3). The top of the device base (1) has two symmetrically distributed sets of first linear electric rails (14). The driving end of the first linear electric rails (14) has two fixed support mechanisms (5). The top of the support mechanism (5) is movably engaged with the bottom of the corresponding first nitrogen protection frame (2) and second nitrogen protection frame (3). Welding components (8) are fixedly installed in the first nitrogen protection frame (2) and the second nitrogen protection frame (3). The air guiding mechanism (4) includes a first air guiding component (41) and a second air guiding component (42). The first air guiding component (41) includes a second valve (43) and a third valve (431). The second valve (43) is fixedly installed at the end of the first exhaust head (21), and the third valve (431) is fixedly installed at the end of the second air inlet head (32). A first air pump (44) is fixedly installed at the end of the third valve (431) away from the second air inlet head (32). The second valve (43) is located away from the first exhaust head (21). A gas purification component (45) is fixedly installed at one end. A gas concentration detector (46) is fixedly installed at the end of the gas purification component (45) away from the second valve (43). A first tee pipe (47) is fixedly installed at the end of the gas concentration detector (46) away from the gas purification component (45). A first connector (48) is fixedly installed at the end of the first tee pipe (47) away from the gas concentration detector (46). A second connector (481) is fixedly installed at the end of the first air pump (44) away from the third valve (431). A first gas guide hose (482) is fixedly installed between the first connector (48) and the second connector (481). A fourth valve (49) is fixedly installed at the end of the first three-way pipe (47) away from the gas concentration detector (46) and the first connector (48). A second gas guide hose (491) is fixedly installed at the end of the fourth valve (49) away from the first three-way pipe (47). The structure of the second gas guide component (42) is the same as that of the first gas guide component (41). The second gas guide component (42) is connected to the second valve (491). 3) The second air guide (42) is fixedly installed at the end of the second exhaust head (31) through the third valve (431). A second three-way pipe (410) is fixedly installed between the second air guide hose (491) in the first air guide (41) and the second air guide hose (491) in the second air guide (42). The second three-way pipe (410) is fixedly snapped into the middle of the device top frame (12). A second air pump (411) is fixedly installed at the top of the second three-way pipe (410).

2. The vacuum nitrogen protection device according to claim 1, characterized in that: The top of the first nitrogen protection frame (2) is fixedly equipped with a first exhaust head (21) and a first air inlet head (22). The top of the second nitrogen protection frame (3) is fixedly equipped with a second exhaust head (31) and a second air inlet head (32). The opposite sides of the first nitrogen protection frame (2) and the second nitrogen protection frame (3) are both fixedly equipped with exhaust pipes (23). The ends of the exhaust pipes (23) are all fixedly installed with first valves (231). The top two sides of the device base (1) are both fixedly installed with vacuum pumps (7). The suction end of the vacuum pumps (7) is fixedly installed with suction pipes (71). The end of the suction pipes (71) away from the vacuum pumps (7) and the end corresponding to the first valves (231) are fixedly installed. The first nitrogen protection frame (2) and the second nitrogen protection frame (3) are both fixedly installed with gas pressure detectors (24) and gas concentration monitors (241).

3. The vacuum nitrogen protection device according to claim 1, characterized in that: The gas purification component (45) includes a purification outer cylinder (451), and connecting pipes (452) are fixedly installed at both ends of the purification outer cylinder (451). The ends of the two connecting pipes (452) are fixedly installed at the ends of the second valve (43) and the gas concentration detector (46), respectively. A purification inner tube (453) is movably installed in the purification outer cylinder (451), and a gas purification core (454) is fixedly installed in the purification inner tube (453).

4. The vacuum nitrogen protection device according to claim 1, characterized in that: A nitrogen generating device (6) is fixedly installed at the top center of the device base (1). A gas transmission pipe (61) is fixedly installed at the output port of the nitrogen generating device (6). The end of the gas transmission pipe (61) and the top of the second air pump (411) are fixedly installed.

5. A vacuum nitrogen protection device according to claim 1, characterized in that: The support mechanism (5) includes a support base (51). A sealing frame (511) is integrally formed at the top center of the support base (51). The sealing frame (511) is movably engaged with the bottom of the corresponding first nitrogen protection frame (2) and second nitrogen protection frame (3). A sealing gasket (512) is provided on the upper surface of the support base (51). The upper surface of the sealing gasket (512) contacts the lower surface of the corresponding first nitrogen protection frame (2) and second nitrogen protection frame (3). A bearing (52) is provided in the middle fixing clip. A rotating shaft (521) is provided in the middle fixing clip of the bearing (52). A platform (53) is fixedly installed at the top of the rotating shaft (521). A driven gear ring (522) is fixedly installed at the bottom of the rotating shaft (521). A drive gear (524) is meshed with the outer side of the driven gear ring (522). A drive shaft (523) is fixedly installed in the middle of the drive gear (524). The drive shaft (523) is rotatably installed at the bottom end of the support base (51).

6. A vacuum nitrogen protection device according to claim 5, characterized in that: The bottom end of the support base (51) is fixedly installed with a first cover (54), and the bottom end of the first cover (54) is fixedly installed with a drive motor (55). The drive end of the drive motor (55) and the bottom end of the drive shaft (523) are fixedly installed.

7. A vacuum nitrogen protection device according to claim 6, characterized in that: The bottom end of the first cover (54) is fixedly installed with a second cover (56), the drive motor (55) is located in the second cover (56), and the support mechanism (5) is fixedly installed at the drive end of the first linear electric rail (14) through the second cover (56).

8. A vacuum nitrogen protection device according to claim 1, characterized in that: The welding assembly (8) includes two second linear rails (81). The welding assembly (8) is fixedly installed on the inner side of the first nitrogen protection frame (2) and the second nitrogen protection frame (3) respectively via the second linear rails (81). A third linear rail (82) is fixedly installed at the driving end of the two second linear rails (81). A cylinder bracket (83) is fixedly installed at the driving end of the third linear rail (82). An electric lifting rod (84) is fixedly installed on the cylinder bracket (83). A rotary cylinder (85) is fixedly installed at the driving end of the electric lifting rod (84). A mounting bracket (86) is fixedly installed at the driving end of the rotary cylinder (85). A welding end (87) is fixedly installed at the end of the mounting bracket (86).

9. A vacuum nitrogen protection device according to claim 1, characterized in that: The first nitrogen protection frame (2) and the second nitrogen protection frame (3) are both fixedly equipped with observation windows (201) on their sides.

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