A positionable welding device for electronic cigarette production

Abstract

This invention provides a positionable welding device for electronic cigarette production, relating to the field of laser welding technology. The positionable welding device includes a control cabinet assembly, a control PC mounted on the control cabinet assembly (serving as the upper control unit of the control cabinet assembly), a vision laser welding machine mounted on the upper side wall of the control cabinet assembly, and a three-axis CNC machining platform mounted on the outer side wall of the control cabinet assembly. A heating wire welding box assembly, including a welding outer casing, is mounted on the surface of the three-axis CNC machining platform. This invention utilizes a high-pressure air curtain to isolate the inert gas inside the welding outer casing. The inert gas maintains only low fluidity, slowing down the heat loss rate in the welding area, helping to maintain a relatively stable temperature field in the welding area, ensuring effective input and utilization of welding energy, and preventing low-temperature condensation of fumes around the welding area, thereby improving the overall quality of laser welding.

Description

Technical Field

[0001] This invention relates to the field of laser welding technology, specifically to a positionable welding device for electronic cigarette production. Background Technology

[0002] In the manufacturing process of e-cigarettes, laser welding is used to connect the heating wire to the metal electrode. As a non-contact welding method, laser welding can precisely focus heat on the welding area, avoiding excessive thermal impact on surrounding materials. This ensures the precision and integrity of e-cigarette components. Its welding speed is relatively fast, which can effectively improve production efficiency and meet the needs of large-scale production. Moreover, laser welding can achieve high-quality weld joints with high weld strength, ensuring the stability and reliability of the connection between the heating wire and the metal electrode. This has a crucial impact on the normal operation and lifespan of e-cigarettes.

[0003] In the laser welding process, protective gas plays an indispensable role. Because the welding process exposes the metal material to a high-temperature environment, the metal is prone to chemical reactions with oxygen, nitrogen and other gases in the air, such as oxidation and nitriding. These reactions can lead to a decline in the performance of the weld joint, such as reduced strength and poor corrosion resistance. Protective gas can form a protective barrier in the welding area, isolating the metal from the air and preventing it from coming into contact with harmful gases. This ensures the welding quality, improves the stability and reliability of the weld joint, and ensures that the heating wire of the electronic cigarette can work normally and have good durability after being welded to the metal electrode.

[0004] However, existing shielding gas release strategies generally involve coaxial release along the laser welding path. When the shielding gas is released coaxially along the welding path, the welding fumes are washed onto the workpiece surface. These fumes, which adhere to the workpiece surface, contain a large number of impurities such as metal oxides and metal particles. This affects the appearance quality of the workpiece, making the surface rough and uneven in color. On the other hand, these impurities may penetrate into the weld joint, weakening its strength and reducing its conductivity, thereby affecting the heating effect and overall performance of the electronic cigarette. At the same time, because the surface temperature around the welding area decreases under the action of the shielding gas, the fumes will directly condense on the workpiece surface, causing contamination around the welding area and affecting the welding effect. In addition, coaxial release of shielding gas may lead to uneven distribution of the shielding gas, resulting in poor protection in some parts of the welding area, further increasing the probability of welding defects and affecting the product qualification rate.

[0005] Based on the above viewpoints, those skilled in the art have proposed a positionable welding device for electronic cigarette production. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a positionable electronic cigarette production welding device. This welding device utilizes a high-pressure air curtain to isolate the inert gas inside the welding outer casing. The inert gas maintains only low fluidity, slowing down the heat loss rate in the welding area and helping to maintain a relatively stable temperature field in the welding area. This ensures the effective input and utilization of welding energy and also prevents the fumes from condensing directly around the welding area due to low temperatures, thereby improving the overall quality of laser welding.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a positionable electronic cigarette production welding device, comprising a control cabinet assembly, a control PC mounted on the control cabinet assembly, the control PC serving as the upper control unit of the control cabinet assembly, a vision laser welding machine mounted on the upper side wall of the control cabinet assembly, a three-axis CNC machining platform mounted on the outer side wall of the control cabinet assembly, a heating wire welding box assembly mounted on the platform surface of the three-axis CNC machining platform, the heating wire welding box assembly comprising a welding outer box, a heating wire fixing mold detachably connected to the lower inner wall of the welding outer box, an air curtain blowing tube rotatably connected to the rear side wall of the welding outer box, an air curtain tube driving mechanism for driving the air curtain blowing tube to rotate mounted on the rear side wall of the welding outer box, an air blowing mechanism mounted in the middle of the rear side wall of the welding outer box, an air receiving mechanism mounted on the upper half of the front electric flip plate of the welding outer box, and an air outlet mechanism mounted in the middle of the front side wall of the front electric flip plate of the welding outer box.

[0008] The air outlet mechanism includes an air outlet frame, a diversion pipe is fixedly connected to the front side wall of the air outlet frame, an exhaust hose and a first air outlet pipe are fixedly connected to the middle and front side of the left side wall of the diversion pipe respectively, and a second air outlet pipe is fixedly connected to the front side of the lower side wall of the diversion pipe.

[0009] A circulating filter mechanism is installed on the left side wall of the welding outer casing, and a protective gas circulating drive mechanism is installed on the left side wall of the welding outer casing in front of the circulating filter mechanism.

[0010] Preferably, the circulating filtration mechanism includes a gas pre-storage box, with a replaceable filter element detachably connected to the front end of the gas pre-storage box. A filter element cover is installed on the top of the replaceable filter element. A second air inlet valve and a first air inlet valve are respectively installed at the middle and front side of the top of the gas pre-storage box. The second air inlet valve and the first air inlet valve are used to introduce different types of protective gases into the gas pre-storage box. A diversion box is fixedly connected to the lower side wall of the gas pre-storage box. Several heat dissipation fins arranged in a linear array are connected through the side wall where the gas pre-storage box and the diversion box are connected. An exhaust valve is installed at the top of the rear side wall of the gas pre-storage box. The other end of the exhaust valve is connected to the air blowing mechanism through a pipe. The other end of the second air exhaust pipe penetrates the front side wall of the diversion box.

[0011] Preferably, the air-bearing mechanism includes an air-bearing frame, an air-bearing cylinder is fixedly connected to the front side wall of the air-bearing frame, and a groove is opened on the rear side wall of the air-bearing frame at the same horizontal height as the air outlet of the air curtain blowing cylinder. The bottom end of the air-bearing cylinder is connected to the diversion pipe.

[0012] Preferably, the air outlet mechanism further includes a spring frame fixed inside the diverter pipe at a rearward position. A trigger switch is provided on the outer side of the front side wall of the spring frame, an electromagnet is provided on the inner side of the front side wall of the spring frame, and a diverter assembly is connected to the center of the front side wall of the spring frame.

[0013] Preferably, the diversion assembly includes a diversion core, a return spring fixedly connected to the rear side wall of the diversion core, a trigger protrusion for use with a trigger switch on the outer side of the rear side wall of the diversion core, an attraction groove for engaging with an electromagnet on the inner side of the rear side wall of the diversion core, a straight exhaust groove for connecting the air-bearing duct and the second air exhaust pipe in the middle of the diversion core, an exhaust bend groove for connecting the air-bearing duct and the first air exhaust pipe on the rear side of the diversion core, and an intake bend groove on the rear side of the diversion core, one end of the intake bend groove being opened on the rear side wall of the diversion core and the other end being opened on the left side wall of the diversion core and located at the front end of the exhaust hose.

[0014] Preferably, the protective gas circulation drive mechanism includes an air outlet duct installed at the center of the front side wall of the gas pre-storage box and a fan mounting bracket fixed to the left side wall of the welded outer box. A drive fan is rotatably connected inside the fan mounting bracket. A rotating wheel is fixedly connected to the bottom of the shaft of the fan mounting bracket. A fan housing for covering the drive fan is fixedly connected to the outer side wall of the fan mounting bracket. The front end of the fan housing is connected to the first air exhaust pipe, and the rear end of the fan housing is connected to the distribution box through a pipe. A hinge plate is pin-connected to the lower side wall of the rotating wheel. A drive rod is pin-connected to the other end of the hinge plate. The drive rod is slidably connected to the center of the air outlet duct. A valve-equipped piston plate is fixedly connected to the other end of the drive rod. The valve-equipped piston plate is provided with multiple valve plates that can only be opened backward in one direction. The outer side wall of the valve-equipped piston plate is tightly fitted to the inner side wall of the air outlet duct.

[0015] Preferably, the blowing mechanism includes a blowing frame, a blowing pipe is fixedly connected to the rear side wall of the blowing frame, and a sealing airbag is connected to the top end of the blowing pipe.

[0016] Preferably, a three-way valve is fixedly connected to the rear side wall of the diversion box, and one port of the three-way valve is connected to the sealing airbag through a pipe.

[0017] The present invention has the following technical features and beneficial effects:

[0018] 1. High-pressure air curtains are used to isolate the inert gas inside the welding chamber. The inert gas maintains low flow, and the fumes generated by laser welding rise slowly. They do not adhere to the workpiece surface due to the flow of the shielding gas. At the same time, due to the low-speed flow characteristics of the inert gas, the heat loss rate in the welding area is slowed down, which helps to maintain a relatively stable temperature field in the welding area, ensuring the effective input and utilization of welding energy. It also prevents the fumes from condensing directly around the welding area due to low temperature, thereby improving the overall quality of laser welding.

[0019] 2. The protective gas is pre-stored and circulated by a protective gas circulation drive mechanism and a circulation filtration mechanism, eliminating the need for continuous injection of protective gas. This optimizes the emission strategy of protective gas, greatly reduces the consumption of protective gas, and makes the manufacturing cost of electronic cigarettes lower.

[0020] 3. The protective gas mixture of helium and argon is used to isolate the welding area while optimizing the heat dissipation efficiency of the welding process. Since helium is more expensive, it can pass through the workpiece first during emission, which greatly improves its heat dissipation effect on welding and also saves a lot of helium. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the present invention;

[0022] Figure 2 This is a top view of the present invention;

[0023] Figure 3 This is a schematic diagram of the heating wire welding box assembly of the present invention;

[0024] Figure 4 This is a schematic diagram of the heating wire welding box assembly concealing the gas pre-storage box cover of the present invention;

[0025] Figure 5 This is an isometric view of the heating wire welding box assembly of the present invention;

[0026] Figure 6 This is a top view of the heating wire welding box assembly of the present invention;

[0027] Figure 7 for Figure 6 Isometric side sectional view at point AA;

[0028] Figure 8 for Figure 7 Enlarged view of point B in the middle;

[0029] Figure 9 This is a schematic diagram of the protective gas circulation drive mechanism after the fan housing is hidden in this invention;

[0030] Figure 10 This is a schematic diagram of the protective gas circulation drive mechanism after concealing the fan housing and air outlet in this invention;

[0031] Figure 11 This is a schematic diagram of the internal structure of the air blowing mechanism in this invention;

[0032] Figure 12 This is a schematic diagram of the shunt component in this invention;

[0033] Figure 13 This is a schematic diagram of the rear side of the shunt component in this invention.

[0034] The components include: 1. Control cabinet assembly; 2. Control PC; 3. Vision laser welding machine; 4. Three-axis CNC machining platform; 5. Heating wire welding box assembly.

[0035] 51. Welded outer casing; 52. Heating wire fixing mold; 53. Air curtain blowing tube; 54. Air curtain tube drive mechanism; 55. Air receiving mechanism; 56. Protective gas circulation drive mechanism; 57. Circulation filtration mechanism; 58. Air blowing mechanism; 59. Air outlet mechanism;

[0036] 551. Wind-bearing frame; 552. Wind-bearing tube;

[0037] 561. Fan housing; 562. Air outlet; 563. Fan mounting bracket; 564. Drive fan; 565. Rotating disc; 566. Drive rod; 567. Piston plate with valve; 568. Hinge plate;

[0038] 571. Gas pre-storage tank; 572. Replaceable filter element; 573. Filter element cover; 574. Three-way valve; 575. Heat dissipation fins; 576. Diverter box; 577. First intake valve; 578. Second intake valve; 579. Exhaust valve;

[0039] 581. Inflator; 582. Inflator tube; 583. Occlusive airbag;

[0040] 591. Exhaust bracket; 592. Diverter pipe; 593. Exhaust hose; 594. First air intake pipe; 595. Second air intake pipe; 596. Diverter assembly; 597. Spring bracket; 598. Trigger switch; 599. Electromagnet;

[0041] 5961. Diverter core; 5962. Straight exhaust groove; 5963. Exhaust bend groove; 5964. Intake bend groove; 5965. Return spring; 5966. Trigger protrusion; 5967. Suction groove. Detailed Implementation

[0042] 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.

[0043] Example 1, as Figure 1 , Figure 2 and Figure 3 As shown, this embodiment of the invention provides a positionable electronic cigarette production welding device. The positionable electronic cigarette production welding device includes a control cabinet assembly 1, a control PC2 mounted on the control cabinet assembly 1 (the control PC2 serves as the upper control unit of the control cabinet assembly 1), a vision laser welding machine 3 mounted on the upper side wall of the control cabinet assembly 1, a three-axis CNC machining platform 4 mounted on the outer side wall of the control cabinet assembly 1, and a heating wire welding box assembly 5 mounted on the platform surface of the three-axis CNC machining platform 4. The heating wire welding box assembly 5 includes a welding outer box 51, and a heating wire fixing mold 52 is detachably connected to the lower inner wall of the welding outer box 51. Before performing laser welding on the heating wire, the operator places the heating wire and metal electrode on the heating wire fixing mold 52, and then installs the heating wire fixing mold 52 on the lower inner wall of the welding outer box 51.

[0044] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7 As shown, an air curtain blowing cylinder 53 is rotatably connected to the rear side wall of the welding outer casing 51. An air curtain cylinder drive mechanism 54 for driving the air curtain blowing cylinder 53 to rotate is also installed on the rear side wall of the welding outer casing 51. An air-bearing mechanism 55 is installed on the upper half of the front electric flip plate of the welding outer casing 51. The air-bearing mechanism 55 includes an air-bearing frame 551. An air-bearing cylinder 552 is fixedly connected to the front side wall of the air-bearing frame 551. A groove with the same horizontal height as the air outlet of the air curtain blowing cylinder 53 is opened on the rear side wall of the air-bearing frame 551. The bottom end of the air-bearing cylinder 552 is connected to a diverter pipe 592. After the heating wire fixing mold 52 is installed, the welding outer casing 51... The front electric flap flips forward to present a certain angle. The air curtain blower 53 is connected to the air compressor. The air curtain blower 53 starts to blow out high-pressure air, and the air curtain blower drive mechanism 54 drives the air curtain blower 53 to rotate. The air curtain blower drive mechanism 54 can be a motor and belt assembly. The motor drives the belt drive, which in turn drives the air curtain blower 53 to rotate. When the air curtain blower 53 rotates, the high-pressure air curtain blown out from the air curtain blower 53 sweeps across the heating wire fixing mold 52, so that the impurities attached to the heating wire fixing mold 52 are blown out from the electric flap, avoiding dust adhesion and reducing the quality of laser welding.

[0045] Example 2, as Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 10 and Figure 11 As shown, this embodiment provides another implementation method based on embodiment one. An air blowing mechanism 58 is installed in the middle of the rear side wall of the welded outer casing 51. The air blowing mechanism 58 includes an air blowing frame 581. An air blowing pipe 582 is fixedly connected to the rear side wall of the air blowing frame 581. A sealing airbag 583 is connected to the top of the air blowing pipe 582. An air outlet mechanism 59 is installed in the middle of the front side wall of the front electric flip plate of the welded outer casing 51. The air outlet mechanism 59 includes an air outlet frame 591. A diversion pipe 592 is fixedly connected to the front side wall of the air outlet frame 591. An exhaust hose 593 and a first air outlet pipe 594 are fixedly connected to the middle of the left side wall and the front side of the diversion pipe 592, respectively. A second air outlet pipe 595 is fixedly connected to the front side of the lower side wall of the diversion pipe 592.

[0046] like Figure 8 As shown, the air outlet mechanism 59 also includes a spring frame 597 fixed inside the diverter pipe 592 at a rearward position. A trigger switch 598 is provided on the outer side of the front wall of the spring frame 597, and an electromagnet 599 is provided on the inner side of the front wall of the spring frame 597.

[0047] Example 3, as Figure 4 and Figure 5 As shown, this embodiment provides another implementation method based on Embodiment 1 and Embodiment 2. A circulating filter mechanism 57 is installed on the left side wall of the welded outer casing 51. A protective gas circulation drive mechanism 56 is installed on the left side wall of the welded outer casing 51 and in front of the circulating filter mechanism 57. The circulating filter mechanism 57 includes a gas pre-storage box 571. A replaceable filter element 572 is detachably connected to the front end of the gas pre-storage box 571. A filter element cover 573 is installed on the top of the replaceable filter element 572. Second air inlet valves 578 are respectively installed on the top of the gas pre-storage box 571 at the middle and front ends. The first intake valve 577 and the second intake valve 578 are used to introduce different types of protective gases into the gas pre-storage box 571. A distribution box 576 is fixedly connected to the lower side wall of the gas pre-storage box 571. Several heat dissipation fins 575 arranged in a linear array are connected through the side wall where the gas pre-storage box 571 and the distribution box 576 are connected. An exhaust valve 579 is installed at the top of the rear side wall of the gas pre-storage box 571. The other end of the exhaust valve 579 is connected to the air blowing mechanism 58 through a pipe. The other end of the second air exhaust pipe 595 passes through the front side wall of the distribution box 576.

[0048] like Figure 6 , Figure 7 , Figure 8 , Figure 12 and Figure 13 As shown, a current-diverting assembly 596 is connected to the center of the front side wall of the spring frame 597. The current-diverting assembly 596 includes a current-diverting core 5961. A return spring 5965 is fixedly connected to the rear side wall of the current-diverting core 5961. A trigger protrusion 5966 for use with a trigger switch 598 is provided on the outer side of the rear side wall of the current-diverting core 5961. An attraction groove 5967 for engaging with an electromagnet 599 is provided on the inner side of the rear side wall of the current-diverting core 5961. The middle position of the current-diverting core 5961... A straight exhaust groove 5962 is provided to connect the air receiving tube 552 and the second air exhaust pipe 595. An exhaust bend 5963 is provided on the rear side of the diverting core 5961 to connect the air receiving tube 552 and the first air exhaust pipe 594. An air inlet bend 5964 is provided on the rear side of the diverting core 5961. One end of the air inlet bend 5964 is provided on the rear side wall of the diverting core 5961 and the other end is provided on the left side wall of the diverting core 5961 and is located at the front end of the exhaust hose 593.

[0049] like Figure 9 , Figure 10 and Figure 11 As shown, the protective gas circulation drive mechanism 56 includes an air outlet duct 562 installed at the center of the front side wall of the gas pre-storage box 571 and a fan mounting bracket 563 fixed to the left side wall of the welded outer casing 51. A drive fan 564 is rotatably connected inside the fan mounting bracket 563. A rotating wheel 565 is fixedly connected to the bottom of the shaft of the fan mounting bracket 563. A fan housing 561 for covering the drive fan 564 is fixedly connected to the outer side wall of the fan mounting bracket 563. The front end of the fan housing 561 is connected to the first air exhaust pipe 594, and the rear end of the fan housing 561 is connected to the distribution box 576 through a pipe. Connected to the rotating wheel 565, the lower side wall of the rotating wheel 565 is pin-connected to a hinge plate 568. The other end of the hinge plate 568 is pin-connected to a drive rod 566. The drive rod 566 is slidably connected to the center of the air outlet 562. The other end of the drive rod 566 is fixedly connected to a valve piston plate 567. The valve piston plate 567 is provided with multiple valve plates that can only be opened backward in one direction. The outer side wall of the valve piston plate 567 is tightly fitted to the inner side wall of the air outlet 562. The rear side wall of the diversion box 576 is fixedly connected to a three-way valve 574. One port of the three-way valve 574 is connected to the sealing airbag 583 through a pipe.

[0050] Working Principle: Before laser welding the heating wire, the operator places the heating wire and metal electrode on the heating wire fixing mold 52. The heating wire fixing mold 52 is then installed on the lower inner wall of the welding outer casing 51. After the heating wire fixing mold 52 is installed, the front electric flap of the welding outer casing 51 flips forward to a certain angle. The air curtain blower 53 is connected to an air compressor, and the air curtain blower 53 begins to blow out high-pressure air. The air curtain blower drive mechanism 54 drives the air curtain blower 53 to rotate. The air curtain blower drive mechanism 54 can be a motor and belt assembly. The motor drives the belt drive, which in turn drives the air curtain blower 53 to rotate. As the air curtain blower 53 rotates, the high-pressure air curtain blown out from the air curtain blower 53 sweeps across the heating wire fixing mold 52, causing impurities attached to the heating wire fixing mold 52 to be blown out by the electric flap, preventing dust accumulation. Dust buildup reduces the quality of laser welding. After dust removal, the air curtain blower 53 stops rotating and stops blowing air. Then, the exhaust valve 579 opens, and protective gas is filled into the gas pre-storage box 571 through the second air inlet valve 578. This protective gas is preferably a low-cost inert gas such as argon. The inert gas filled into the gas pre-storage box 571 will enter the blowing mechanism 58 through the exhaust valve 579 after being blown into the gas pre-storage box 571, and then fill the inside of the welding outer box 51. After the inert gas has been filled for a period of time, the air curtain blower 53 rotates to correspond with the rear groove of the air-bearing mechanism 55. Then, the air curtain blower 53 remains stationary. At this time, the high-pressure air curtain blown out by the air curtain blower 53 enters the air-bearing mechanism 55, thereby forming a stable high-pressure air curtain at the top of the inner cavity of the welding outer box 51, thus isolating the inner cavity of the welding outer box 51 from the outside air.

[0051] It should be noted that the introduction of inert gas must ensure that the air originally inside the welding outer box 51 is dispelled. The introduction time can be determined by a limited number of experiments based on the volume of the welding outer box 51 and the gas introduction rate.

[0052] After the inert gas is filled, the vision sensor on the vision laser welding machine 3 begins to scan the boundary of the heating wire fixing mold 52 and feeds back the scanned image signal to the control cabinet assembly 1. The control cabinet assembly 1 controls the top control platform of the three-axis CNC machining platform 4 to move the initial welding position of the heating wire fixing mold 52 to directly below the vision laser welding machine 3. Then, the vision laser welding machine 3 begins welding, welding the heating wire and metal electrodes with a laser beam. The inert gas filling the welding outer casing 51 does not diffuse outward under the isolation of the high-pressure air curtain. Therefore, the inert gas only maintains a low flow rate and is controlled by the laser. The welding fumes rise slowly and do not adhere to the workpiece surface due to the flow of the shielding gas. At the same time, due to the low-speed flow characteristics of the inert gas, the heat loss rate in the welding area is slowed down, which helps to maintain a relatively stable temperature field in the welding area, ensuring the effective input and utilization of welding energy, and preventing the fumes from condensing directly around the welding area due to low temperature. This improves the overall quality of laser welding. Meanwhile, during the welding process, the high-pressure air curtain blown out from the air curtain blower 53 enters the distribution box 576 through the air receiving tube 552, the straight exhaust groove 5962 and the second air exhaust pipe 595, thereby rapidly dissipating heat from the heat dissipation fins 575.

[0053] After welding is completed in one target area, the three-axis CNC machining platform 4 will move the heating wire welding box assembly 5 to the right, thereby moving another welding target area directly below the vision laser welding machine 3. When the heating wire welding box assembly 5 is rapidly moved by the three-axis CNC machining platform 4, the diversion component 596 will move towards the spring frame 597 due to the inertia of the heating wire welding box assembly 5. The trigger protrusion 5966 will squeeze the trigger switch 598. After the trigger switch 598 is squeezed, it will send a trigger signal back to the control cabinet assembly 1. Then, the control cabinet assembly 1 controls the electromagnet 599 to be quickly energized, so that the electromagnet 599 is attracted to the inside of the suction groove 5967. At this time, the straight exhaust groove 5962 connects the air receiving tube 552 to the first air exhaust pipe 594, and the air intake bend 5964 connects the exhaust hose 593 to the inner cavity of the welding outer box 51. The high-pressure air curtain blown out by the air curtain blower 53 is blown into the fan housing 561 through the air receiving tube 552 and the first air exhaust pipe 594. Inside, this drives the fan 564 to start rotating rapidly, which in turn drives the rotating disk 565 to rotate. Under the rotation of the rotating disk 565, the drive rod 566 will continuously extend and retract inside the air outlet duct 562 under the action of the hinge plate 568. Each time it extends forward, the valved piston plate 567 will fill the gas pre-storage box 571 with the protective gas that enters the air outlet duct 562 through the exhaust hose 593. When the valved piston plate 567 retracts, the one-way valve plate on the valved piston plate 567 opens. When the valve is opened, the protective gas comes to the rear of the valved piston plate 567. Through the continuous suction of the valved piston plate 567, the protective gas originally filled in the welding outer box 51 will enter the gas pre-storage box 571. At the same time, the protective gas will carry the flue gas into the gas pre-storage box 571. The protective gas pre-stored in the gas pre-storage box 571 will flow into the welding outer box 51, thereby realizing the circulation of protective gas between the welding outer box 51 and the circulation filter mechanism 57.

[0054] It should be noted that after the trigger switch 598 is triggered, the control cabinet assembly 1 will control the electromagnet 599 to be energized within a few seconds. The energization time of the electromagnet 599 can be obtained from the air curtain pressure and the volume of the welded outer casing 51 after a limited number of experiments.

[0055] After the protective gas and flue gas recirculate into the gas pre-storage box 571, they will first pass through the replaceable filter element 572. The replaceable filter element 572 will filter the flue gas in the protective gas. Then, the protective gas flowing into the gas pre-storage box 571 will be cooled by multiple heat dissipation fins 575 so that after the protective gas recirculates into the welding outer box 51, it will dissipate heat on the surface of the workpiece to prevent the workpiece temperature from being too high and causing thermal deformation.

[0056] In addition, the gas pre-storage box 571 is equipped with pressure and temperature detection devices, which can be selected as pressure sensors and temperature sensors, both of which are electrically connected to the control cabinet assembly 1. When the pressure loss inside the gas pre-storage box 571 falls below the threshold set by the pressure detection devices, protective gas is replenished into the gas pre-storage box 571 through the second inlet valve 578 to maintain the pressure inside the gas pre-storage box 571 within a stable range. The temperature monitoring device can monitor the temperature of the protective gas flowing into the gas pre-storage box 571 in real time. When the temperature of the protective gas falls below the set threshold, the second inlet valve 578 is depressurized. The protective gas is introduced into the first inlet valve 577 and the first inlet valve 577 is opened. The protective gas introduced into the first inlet valve 577 can be an inert gas with a high heat dissipation level, such as helium. Since helium has a lower specific gravity than argon, helium will accumulate in the upper area inside the gas pre-storage box 571. It will flow out preferentially from the exhaust valve 579. The three-way valve 574 will switch the pipeline to connect with the sealing airbag 583. At this time, the outflowing air curtain will cause the sealing airbag 583 to start to collide. Helium will flow out from the outer surface of the heating wire fixing mold 52, thereby fully removing the surface temperature of the workpiece and preventing the workpiece from deforming due to excessive welding temperature.

[0057] It should be noted that the control PC2 is the upper-level control unit of the control cabinet assembly 1, while the temperature detection device, air pressure detection device, exhaust valve 579, second air intake valve 578, three-way valve 574, trigger switch 598 and electromagnet 599 are all lower-level execution units of the control cabinet assembly 1. The control cabinet assembly 1 is connected to various industrial control devices according to a preset topology through wired / wireless communication connection means. The topology includes, but is not limited to, star, bus, ring, etc., so that the computer can centrally manage and coordinate the industrial control devices.

[0058] 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 positionable electronic cigarette manufacturing welding device, comprising a control cabinet assembly, a control PC mounted on the control cabinet assembly, the control PC serving as the upper control unit of the control cabinet assembly, a vision laser welding machine mounted on the upper side wall of the control cabinet assembly, a three-axis CNC machining platform mounted on the outer side wall of the control cabinet assembly, and a heating wire welding box assembly mounted on the platform surface of the three-axis CNC machining platform, characterized in that, The heating wire welding box assembly includes a welding outer box, a heating wire fixing mold detachably connected to the lower inner wall of the welding outer box, an air curtain blowing cylinder rotatably connected to the rear side wall of the welding outer box, an air curtain cylinder drive mechanism for driving the air curtain blowing cylinder to rotate, an air blowing mechanism installed in the middle of the rear side wall of the welding outer box, an air receiving mechanism installed on the upper part of the front electric flip plate of the welding outer box, and an air outlet mechanism installed in the middle of the front side wall of the front electric flip plate of the welding outer box. The air outlet mechanism includes an air outlet frame, a diversion pipe is fixedly connected to the front side wall of the air outlet frame, an exhaust hose and a first air outlet pipe are fixedly connected to the middle and front side of the left side wall of the diversion pipe respectively, and a second air outlet pipe is fixedly connected to the front side of the lower side wall of the diversion pipe. A circulating filter mechanism is installed on the left side wall of the welded outer casing, and a protective gas circulation drive mechanism is installed on the left side wall of the welded outer casing in front of the circulating filter mechanism. The circulating filtration mechanism includes a gas pre-storage box. A replaceable filter element is detachably connected to the front end of the gas pre-storage box. A filter element cover is installed on the top of the replaceable filter element. A second air inlet valve and a first air inlet valve are respectively installed at the middle and front side of the top of the gas pre-storage box. The second air inlet valve and the first air inlet valve are used to introduce different types of protective gases into the gas pre-storage box. A distribution box is fixedly connected to the lower side wall of the gas pre-storage box. Several heat dissipation fins arranged in a linear array are connected through the side wall where the gas pre-storage box and the distribution box are connected. An exhaust valve is installed at the top of the rear side wall of the gas pre-storage box. The other end of the exhaust valve is connected to the air blowing mechanism through a pipe. The other end of the second air exhaust pipe passes through the front side wall of the distribution box.

2. The positionable electronic cigarette production welding device according to claim 1, characterized in that, The air-bearing mechanism includes an air-bearing frame, an air-bearing cylinder is fixedly connected to the front side wall of the air-bearing frame, and a groove is opened on the rear side wall of the air-bearing frame at the same horizontal height as the air outlet of the air curtain blowing cylinder. The bottom end of the air-bearing cylinder is connected to the diversion pipe.

3. The positionable electronic cigarette production welding device according to claim 1, characterized in that, The air outlet mechanism also includes a spring frame fixed inside the splitter pipe at a rearward position. A trigger switch is provided on the outer side of the front wall of the spring frame, an electromagnet is provided on the inner side of the front wall of the spring frame, and a splitter assembly is connected to the center of the front wall of the spring frame.

4. The positionable electronic cigarette production welding device according to claim 3, characterized in that, The diversion assembly includes a diversion core, a return spring fixedly connected to the rear side wall of the diversion core, a trigger protrusion for use with a trigger switch on the outer side of the rear side wall of the diversion core, an attraction groove for engaging with an electromagnet on the inner side of the rear side wall of the diversion core, a straight exhaust groove for connecting the air-bearing duct and the second air exhaust pipe in the middle of the diversion core, an exhaust bend groove for connecting the air-bearing duct and the first air exhaust pipe on the rear side of the diversion core, and an intake bend groove on the rear side of the diversion core, one end of the intake bend groove being located on the rear side wall of the diversion core and the other end being located on the left side wall of the diversion core and positioned at the front end of the exhaust hose.

5. The positionable electronic cigarette production welding device according to claim 4, characterized in that, The protective gas circulation drive mechanism includes an air outlet duct installed at the center of the front side wall of the gas pre-storage tank and a fan mounting bracket fixed to the left side wall of the welded outer casing. A drive fan is rotatably connected inside the fan mounting bracket. A rotating wheel is fixedly connected to the bottom of the shaft of the fan mounting bracket. A fan housing for covering the drive fan is fixedly connected to the outer side wall of the fan mounting bracket. The front end of the fan housing is connected to the first air exhaust pipe, and the rear end of the fan housing is connected to the distribution box through a pipe. A hinge plate is pin-connected to the lower side wall of the rotating wheel. A drive rod is pin-connected to the other end of the hinge plate. The drive rod is slidably connected to the center of the air outlet duct. A valve-equipped piston plate is fixedly connected to the other end of the drive rod. The valve-equipped piston plate is provided with multiple valve plates that can only be opened backward in one direction. The outer side wall of the valve-equipped piston plate is tightly fitted to the inner side wall of the air outlet duct.

6. The positionable electronic cigarette production welding device according to claim 2, characterized in that, The air blowing mechanism includes an air blowing frame, an air blowing pipe is fixedly connected to the rear side wall of the air blowing frame, and a sealing airbag is connected to the top end of the air blowing pipe.

7. The positionable electronic cigarette production welding device according to claim 6, characterized in that, A three-way valve is fixedly connected to the rear wall of the diversion box, and one port of the three-way valve is connected to the sealing airbag through a pipe.

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