Automatic heating wire welding device for electronic cigarette production

Abstract

The invention discloses an automatic heating wire welding device for electronic cigarette production, which comprises a welding table, a laser generator, a focusing tube and a supporting table plate fixedly mounted on one side of the welding table, mounting racks are arranged on two sides of the upper end of the focusing tube, and the mounting racks are fixedly mounted on the supporting table plate. Circuit data are monitored in real time through a power supply monitor, when a protective layer on the surface of a heating wire is thick and resistance is large, the voltage of current passing through an electromagnet is low, magnetorheological fluid flows slowly under the action of shear stress, a multistage electric push rod continuously pushes a piston piece to enable a pressing pipe to stretch out, and meanwhile the power supply monitor feeds back the data to a laser generator. And on the contrary, when the protective layer is thin and the resistance is small, the shear stress of the magnetorheological fluid is large, the multi-stage electric push rod stops pushing, the power supply monitor feeds back data, the laser generator reduces the power, and over-welding is prevented, so that the stable welding quality is ensured, and the reliability and the stability of welding of the heating wire and the electronic cigarette end are improved.

Description

Technical Field

[0001] The invention relates to the field of laser welding equipment, and in particular to an automatic welding device for heating wires used in the production of electronic cigarettes. Background Art

[0002] The automatic welding device for heating wires used in the production of electronic cigarettes is mainly used for the welding of heating wires in the manufacturing process of electronic cigarettes. It can weld the heating wires of electronic cigarettes with components such as electrodes. In the structure of electronic cigarettes, the heating wire is one of the core components, and its function is to generate heat after power is turned on to atomize the smoke oil. The automatic welding device can ensure that the heating wire is welded with the corresponding electrode. The battery is used to power the resistance wire to heat up, and then the smoke oil and its dissolved substances around the resistance wire are volatilized. When the user inhales, the electronic cigarette starts, and the heating wire starts to work, converting the smoke oil into smoke that can be inhaled.

[0003] Since the electronic cigarette heating wire itself is easily oxidized, a protective layer (such as wax or oil and other antioxidants) is usually coated on its surface to prevent oxidation when the heating wire is stored before welding. When the protective layer condenses on the heating wire, the heating wire has uneven shapes and uneven heat dissipation temperatures, resulting in different thicknesses of the protective layer. This protective layer material will cause the laser to scatter during laser welding, resulting in uneven laser energy distribution when the laser is welding the heating wire. Therefore, the protective layer needs to be melted before laser welding the heating wire. However, in the process of welding by controlling fixed energy values ​​and focal lengths, existing laser welding machines find it difficult to adapt to changes in the thickness of the protective layer, which in turn leads to unstable welding quality, prone to cold welds, and insufficient weld strength. If the laser energy is increased to avoid cold welds, the protective layer will be heated and melted after the laser power is increased, which will cause the increased power laser to easily cause the heating wire to melt or over-weld, thereby affecting the welding quality or service life of the electronic cigarette heating wire.

[0004] To this end, an automatic welding device for heating wires used in electronic cigarette production is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic welding device for heating wires for electronic cigarette production, so as to solve the problem raised in the above background technology that the existing laser welding machine realizes welding by controlling a fixed energy value and focal length, which is difficult to adapt to the change of the thickness of the protective layer, thereby resulting in unstable welding quality and prone to cold welding. The protective layer melts after laser heating. At this time, increasing the power of the laser will easily cause the heating wire to melt or over-weld.

[0006] To achieve the above object, the present invention provides the following technical solutions: An automatic welding device for heating wires used in the production of electronic cigarettes, comprising a welding table, a laser generator and a focusing tube, and a supporting table fixedly mounted on one side of the welding table, mounting frames are provided on both sides of the upper end of the focusing tube, and the mounting frames are fixedly mounted on the supporting table, a fixing tube is fixedly mounted on one side of the mounting frame, a power monitor for real-time sampling and measurement of voltage, current and other parameters of power input and output is fixedly mounted on the upper end of the fixing tube, a cable is fixedly mounted on the power monitor, and the power monitor is connected to the laser generator via the cable, a pressure tube is movably mounted on the lower end of the fixing tube, and a positioning piece is fixedly mounted below the pressure tube, and a positioning rod for downward positioning is fixedly mounted below the positioning piece; A multi-stage electric push rod is fixedly installed on the upper part of the interior of the fixed tube, and the multi-stage electric push rod is located below the mounting frame in the fixed tube, and a piston plate is fixedly installed below the multi-stage electric push rod, and a sleeve filled with magnetorheological fluid is fixedly connected in the interior of the fixed tube, and the piston plate and the pressure tube are respectively located at the upper and lower ends of the sleeve and are movably connected thereto, and an electromagnet is nested on the middle outer side of the sleeve.

[0007] In the above scheme, preferably: a support rod fixed to the welding table for support is fixedly installed below the laser generator, and a side door is movably installed below the welding table, and a transparent baffle is fixedly installed on one side of the support table.

[0008] In the above scheme, preferably: a gas tank is fixedly placed inside the welding table, and a cross valve is connected above the gas tank, an air duct is connected above the cross valve, and the air duct is connected to a positioning table arranged on the welding table.

[0009] In the above scheme, preferably: the inner side of the positioning platform is equidistantly surrounded by guide plates inclined for guiding flow, and the positioning platform below the guide plates is provided with air outlet grooves, a fixed platform is fixedly installed at the inner center of the positioning platform, and an air pump is fixedly installed below the fixed platform, a fixing part is movably installed on the inner side of the fixed platform, and a spring part connected to the air pump is fixedly installed below the fixing part.

[0010] In the above scheme, preferably: the air suction port provided on the upper part of the air suction pump is located directly below the fixing member, and the exhaust pipe provided on one side of the air suction pump is connected to one side of the cross valve.

[0011] In the above scheme, preferably: a spring component 2 is fixedly installed on one side of the interior of the cross valve, and the other end of the spring component 2 is connected to a piston valve that is movably installed in the gas tank, a triangular air guide groove is provided through the middle of the piston valve, an exhaust port for exhaust is provided at the lower side of one side of the piston valve, and the exhaust port is arranged through the bottom of the cross valve.

[0012] In the above scheme, preferably: an electronic cigarette head for welding the carrier is embedded and installed on the fixing member, and a heating wire to be welded is embedded and installed on the upper inner side of the electronic cigarette head.

[0013] In the above scheme, preferably: a collimating tube for shaping and collimating the laser beam generated by the laser generator is fixedly installed on one side of the laser generator, a reflecting cavity for adjusting the laser angle is fixedly installed on one side of the collimating tube, and the focusing tube is arranged below the reflecting cavity, and the collimating tube, the reflecting cavity and the focusing tube are all provided with a water cooling mechanism for heat dissipation and temperature reduction.

[0014] The present invention provides an automatic welding device for heating wires for electronic cigarette production, which has the following technical points and beneficial effects: 1. The present invention designs a power monitor, a multi-stage electric push rod, a sleeve and other devices in a fixed tube, and monitors the circuit data in real time through the power monitor. When the protective layer on the surface of the heating wire is thicker and the resistance is larger, the voltage of the current passing through the electromagnet is lower, and the magnetorheological fluid flows slowly under the shear stress. The multi-stage electric push rod continuously pushes the piston plate to extend the pressure tube. At the same time, the power monitor feeds back data to the laser generator to increase the laser output power and avoid false welding. On the contrary, when the protective layer is thinner and the resistance is smaller, the shear stress of the magnetorheological fluid is large, the multi-stage electric push rod stops pushing, the power monitor feeds back data, and the laser generator reduces the power to prevent over-welding, thereby ensuring stable welding quality and improving the reliability and stability of the welding between the heating wire and the electronic cigarette head.

[0015] 2. The present invention designs devices such as a pressing tube, a positioning piece and a positioning rod, and pushes the piston plate to move in the sleeve through a multi-stage electric push rod, thereby driving the pressing tube, the positioning piece and the positioning rod to move, and pressing the heating wire down to fit it on the electronic cigarette head for positioning. The positioning rod and the heating wire form a current path, and the heating wire generates heat when it is energized to melt its surface protective layer, which is convenient for subsequent welding and serves as a preheating. During the positioning process, the degree of downward pressure can be adjusted according to the resistance of the heating wire through the change of the magnetorheological fluid properties, thereby reducing the displacement during welding and controlling the use of gas volume.

[0016] 3. The present invention designs devices such as a welding table, a cross valve and an air pump. The protective gas in the gas tank enters the positioning table through the cross valve and the air guide pipe. The inclined guide plate surrounds and fills the gas to isolate oxygen and prevent oxidation in the welding area. When the protective layer of the heating wire is thicker and the laser welding power is high, the amount of gas discharged from the exhaust pipe is reduced, the compression distance of the second spring component is short, and the opening of the piston valve air guide groove is large, thereby increasing the flow rate of the protective gas. On the contrary, when the gas volume is large, the compression distance of the second spring component is long, and the opening of the air guide groove is reduced, thereby reducing the flow rate and consumption. At the same time, the air pump works to form a gas circulation, discharge exhaust gas, maintain the stable quality of the protective gas, provide a good environment for welding, and improve the quality and corrosion resistance of the welded joint.

[0017] 4. The present invention designs devices such as positioning rods, pressing tubes and multi-stage electric push rods. Since the positioning rod is in contact with the surface of the heating wire, the melted protective layer on the heating wire is re-solidified in the gap between the positioning rod and the pressing tube through the gas diversion cooling of the guide plate. When the multi-stage electric push rod contracts to make the pressing tube lift and separate the positioning rod and the heating wire, the solidified protective layer sticks the two together. When the positioning rod is lifted, the sticky tension of the protective layer separates it from the heating wire, and the welded heating wire is slightly pulled to perform a tensile test to detect the quality of the welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the internal structure of the welding station in the present invention.

[0020] Figure 3 It is a schematic diagram of the connection structure between the focusing tube and the positioning platform in the present invention.

[0021] Figure 4 It is a schematic diagram of the partial structure of the water cooling mechanism in the present invention.

[0022] Figure 5 It is a schematic diagram of the internal structure of the fixed tube in the present invention.

[0023] Figure 6 It is a schematic diagram of the partial structural cross-section of the fixed pipe in the present invention.

[0024] Figure 7 It is a schematic diagram of the connection structure between the positioning platform and the air guide tube in the present invention.

[0025] Figure 8 It is a schematic diagram of the disassembled structure of the electronic cigarette head and the fixing part in the present invention.

[0026] Fig. 9 It is a schematic cross-sectional view of the local structure of the positioning platform and the cross valve in the present invention.

[0027] Fig.10 It is a partial structural schematic diagram of the fixing member and the fixing platform in the present invention.

[0028] Fig.11 It is a schematic diagram of the split structure of the piston valve and the cross valve in the present invention.

[0029] In the figure: 1. welding table; 101. support rod; 102. support table plate; 103. baffle; 104. side door; 2. laser generator; 201. collimator; 202. reflection cavity; 203. focusing tube; 3. mounting frame; 4. fixing tube; 401. power monitor; 402. cable; 403. pressure tube; 404. multi-stage electric push rod; 405. piston plate; 406. electromagnet; 407. sleeve; 5. fixed Positioning platform; 501, guide plate; 502, fixing platform; 503, fixing part; 504, spring part 1; 6, water cooling mechanism; 7, gas tank; 701, cross valve; 702, air guide pipe; 703, spring part 2; 704, piston valve; 705, air guide groove; 706, exhaust port; 8, vacuum pump; 801, exhaust port; 802, exhaust pipe; 9, positioning part; 10, positioning rod; 11, electronic cigarette head; 12, heating wire. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figures 1 to 11 , the present invention provides a technical solution of an automatic welding device for heating wires used in electronic cigarette production: An automatic welding device for heating wires for electronic cigarette production comprises a welding table 1, a laser generator 2 and a focusing tube 203, and a support table 102 fixedly mounted on one side of the welding table 1, mounting frames 3 are provided on both sides of the upper end of the focusing tube 203, and the mounting frames 3 are fixedly mounted on the support table 102, a fixed tube 4 is fixedly mounted on one side of the mounting frame 3, a power monitor 401 for real-time sampling and measurement of parameters such as voltage and current of power input and output is fixedly mounted on the upper end of the fixed tube 4, a cable 402 is fixedly mounted on the power monitor 401, and the power monitor 401 is connected to the laser generator 2 via the cable 402, a pressure tube 403 is movably mounted on the lower end of the fixed tube 4, and a positioning member 9 is fixedly mounted below the pressure tube 403, and a positioning rod 10 for downward positioning is fixedly mounted below the positioning member 9; A multi-stage electric push rod 404 is fixedly installed on the upper part of the interior of the fixed tube 4, and the multi-stage electric push rod 404 is located below the mounting frame 3 in the fixed tube 4, and a piston piece 405 is fixedly installed below the multi-stage electric push rod 404. A sleeve 407 filled with magnetorheological fluid is fixedly connected in the interior of the fixed tube 4, and the piston piece 405 and the pressure tube 403 are respectively located at the upper and lower ends of the sleeve 407 and are movably connected thereto, and an electromagnet 406 is nested and installed on the middle outer side of the sleeve 407; As an embodiment of the present invention, Figures 1 to 7 As shown, a support rod 101 fixed on the welding table 1 for support is fixedly installed below the laser generator 2, and a side door 104 is movably installed below the welding table 1, and a transparent baffle 103 is fixedly installed on one side of the support table 102; During operation, the laser generator 2 is supported and installed by the support rod 101 on the welding table 1, and the mounting frame 3 is installed and used by the support table plate 102. Secondly, the transparent baffle 103 is used to observe the welding process during welding. At the same time, the side door 104 is used to open the bottom of the welding table 1 to perform equipment maintenance and replacement on the internal gas tank 7 and the cross valve 701. When the heating wire 12 is welded to the electronic cigarette head 11, the power supply monitor 401 on the fixed tube 4 is operated to provide power to the multi-stage electric push rod 404, so that the multi-stage electric push rod 404 operates to push the piston plate 405 downward in the sleeve 407 filled with magnetorheological fluid, and then the magnetorheological fluid pushes the pressure tube in the sleeve 407. 403 operates downward, so that the positioning piece 9 and the positioning rod 10 on the pressing tube 403 press the heating wire 12 down to fit on the electronic cigarette head 11 for downward positioning. When the two positioning rods 10 press the heating wire 12 down for positioning, the electromagnet 406 and the positioning rod 10 are powered by the multi-stage electric push rod 404. After the current passes through the two positioning rods 10 and the heating wire 12, the electromagnet 406 forms a current path, so that the electromagnet 406 generates a magnetic field and acts on the magnetorheological fluid to change its viscosity. When the two positioning rods 10 form a current path with the heating wire 12, the heating wire 12 is energized to generate heat, and then the protective layer on its surface is heated and melted, so that the protective layer is melted before the heating wire is laser welded; If the protective layer on the surface of the heating wire 12 is thicker, the resistance is larger. At this time, the current voltage of the current forming the current path through the electromagnet 406 is lower, so that the magnetic force of the two electromagnets 406 is weaker, and the magnetorheological fluid in the sleeve 407 flows relatively slowly through the center of the sleeve 407 under the action of shear stress, so that the multi-stage electric push rod 404 continues to push the piston plate 405 downward to make the pressure tube 403 extend out of the sleeve 407. At the same time, when the two power supply monitors 401 on the fixed tube 4 forming the current path detect that the protective layer is thicker and the resistance is larger, The circuit data measured by the power monitor 401 is fed back to the laser generator 2 through the cable 402, so that the laser generator 2 increases the output power of the laser according to the feedback data, so as to ensure that the laser power required for welding can pass through the protective layer to weld the heating wire 12 and the electronic cigarette head 11, thereby avoiding the situation of cold welding. If the protective layer on the surface of the heating wire 12 is thin, the magnetorheological fluid in the sleeve 407 has a large shear stress, so that it remains relatively static in the sleeve 407 and cannot flow from the center of the sleeve 407. At this time, the multi-stage The electric push rod 404 stops pushing the piston plate 405, and when the heating wire 12 and the positioning rod 10 are attached to the pressing tube 403, the relative position of the pressing tube 403 in the sleeve 407 remains unchanged. At the same time, when the two power supply monitors 401 on the fixed tube 4 forming the current path detect that the protective layer is thicker and the resistance is smaller, the data detected by the power supply monitor 401 are fed back to the laser generator 2 through the cable 402 to adjust the laser output power to avoid over-welding of the heating wire 12 caused by excessive laser power. When the laser welding of the heating wire 12 is completed Since the positioning rod 10 is in contact with the surface of the heating wire 12, the melted protective layer on the heating wire 12 is re-solidified in the gap between the positioning rod 10 and the positioning rod 10 under the gas diversion cooling of the guide plate 501. When the multi-stage electric push rod 404 contracts to make the pressure tube 403 lift and separate the positioning rod 10 and the heating wire 12, the solidified protective layer sticks the two together. When the positioning rod 10 is lifted, the adhesion tension of the protective layer separates it from the heating wire 12, and the welded heating wire 12 is slightly pulled to perform a slight tensile test to detect the quality of the welding.

[0032] As an embodiment of the present invention, Figures 7 to 10 As shown, the inner side of the positioning platform 5 is equidistantly surrounded by guide plates 501 inclined for guiding flow, and the positioning platform 5 below the guide plates 501 is provided with air outlet grooves, a fixing platform 502 is fixedly installed at the inner center of the positioning platform 5, and an air pump 8 is fixedly installed below the fixing platform 502, a fixing member 503 is movably installed on the inner side of the fixing platform 502, and a spring member 504 connected to the air pump 8 is fixedly installed below the fixing member 503; The air extraction port 801 provided on the upper part of the air extraction pump 8 is located directly below the fixing member 503, and the exhaust pipe 802 provided on one side of the air extraction pump 8 is connected to one side of the cross valve 701, and an electronic cigarette head 11 for welding the carrier is embedded and installed on the fixing member 503, and a heating wire 12 to be welded is embedded and installed on the upper inner side of the electronic cigarette head 11; During operation, the fixing member 503 and the air pump 8 are installed and used through the fixing platform 502. When in use, the electronic cigarette head 11 is oriented and placed in the fixing member 503, so as to provide positioning support for the electronic cigarette head 11 and the heating wire 12 when they are welded, and a spring member 504 is arranged under the fixing member 503, so that the fixing member 503 can be limitedly engaged and moved in the fixing platform 502 when the positioning rod 10 presses the heating wire 12 downward to position it. When the resistance of the heating wire 12 is large, the pressure tube 403 is slowly pushed down by the magnetorheological fluid, so that the positioning rod 10 presses the fixing member 503 down into the fixing platform 502. Since the fixing member 503 has equidistantly surrounding notches for ventilation, when the fixing member 503 is pressed into the fixing platform 502, the air entering the notch is fitted into the fixing member 503 and the fixing platform 502. The volume of the gas discharged from the exhaust pipe 802 is reduced, thereby reducing the gas sucked from the exhaust port 801 when the vacuum pump 8 is in operation, and at the same time reducing the amount of gas discharged from the exhaust pipe 802. When the resistance of the heating wire 12 is small, the pressure tube 403 stops pressing down under the shear stress of the magnetorheological fluid, thereby reducing the distance for pressing the fixing member 503 into the fixing table 502. At this time, the gas entering the notch will increase relatively. In the same way, the amount of gas discharged from the exhaust pipe 802 is increased. Secondly, the positioning table 5 is provided with protective gas during welding, such as nitrogen or argon, through the gas tank 7, the cross valve 701 and the air guide pipe 702. When the protective gas is blown out from the air outlet groove through the positioning table 5, the protective gas is guided to flow around and fill the positioning table 5 through the inclined guide plate 501, thereby isolating the oxygen in the air in the positioning table 5 to prevent oxidation of the welding area.

[0033] As an embodiment of the present invention, Figures 3 to 11 As shown, a gas tank 7 is fixedly placed inside the welding table 1, and a cross valve 701 is connected to the top of the gas tank 7, and an air guide pipe 702 is connected to the top of the cross valve 701, and the air guide pipe 702 is connected to the positioning table 5 arranged on the welding table 1, a spring member 703 is fixedly installed on one side of the inside of the cross valve 701, and the other end of the spring member 703 is connected to a piston valve 704 that is movably installed in the gas tank 7, a triangular air guide groove 705 is penetrated in the middle of the piston valve 704, and an exhaust port 706 for exhaust is provided at the lower side of one side of the piston valve 704, and the exhaust port 706 is arranged through the bottom of the cross valve 701; During operation, if the protective layer of the heating wire 12 is thicker, the power required for laser welding is higher, and the temperature will also increase accordingly. At the same time, the increase in temperature will increase the degree of oxidation reaction between the metal material and oxygen. When the amount of gas discharged from the exhaust pipe 802 decreases, the amount of gas entering the cross valve 701 through the gas decreases and the air pressure is lower, thereby causing the spring part 2 703 to be compressed for a shorter distance. At this time, the air guide groove 705 on the piston valve 704 has a larger opening position in the cross valve 701, thereby increasing the flow rate of the protective gas in the gas tank 7 through the air guide groove 705, thereby increasing the amount of gas discharged through the air outlet groove on the positioning platform 5, so as to improve The protective gas in the positioning table 5 isolates the oxygen in the welding area. When the amount of gas discharged from the exhaust pipe 802 is large, the spring member 703 is compressed for a long distance, the opening of the gas guide groove 705 on the piston valve 704 is reduced, and the flow rate of the protective gas is reduced, but it is still sufficient to isolate the oxygen in the welding area when the laser welding power is low, thereby improving the welding quality and reducing the consumption of the protective gas. Secondly, the gas discharged from the exhaust pipe 802 is discharged to the outside through the exhaust port 706 of the cross valve 701, so that the protective gas circulates through the gas in the positioning table 5 to maintain the stable quality of the protective gas.

[0034] As an embodiment of the present invention, Figures 1 to 4 As shown, a collimator 201 for shaping and collimating the laser beam generated by the laser generator 2 is fixedly installed on one side of the laser generator 2, a reflective cavity 202 for adjusting the laser angle is fixedly installed on one side of the collimator 201, and a focusing tube 203 is arranged below the reflective cavity 202, and a water cooling mechanism 6 for heat dissipation and temperature reduction is arranged on the collimator 201, the reflective cavity 202 and the focusing tube 203; When working, the laser generator 2 generates a laser beam, which first enters the collimator 201, which shapes and collimates the laser beam to make it a beam with higher parallelism and more uniform energy distribution. The laser beam after passing through the collimator 201 enters the reflection cavity 202, which can adjust the angle of the laser beam to accurately focus it on the part that needs to be welded. The laser beam with the adjusted angle enters the focusing tube 203, which focuses the laser beam on a very small spot to increase the laser energy density, thereby realizing the welding of the heating wire 12. Secondly, the water cooling mechanism 6 works continuously to take away the heat generated during laser transmission and focusing through circulating water to prevent overheating and damage to optical components.

[0035] Working principle: When the laser generator 2 is in operation, it will emit a laser beam. After being processed by the collimator 201, the laser beam then enters the reflection cavity 202 for angle adjustment. The adjusted laser beam then enters the focusing tube 203. The focusing tube 203 focuses the laser beam onto a very small spot, thereby increasing the laser energy density and achieving precise welding of the heating wire 12. At the same time, the water cooling mechanism 6 continues to work, and the heat generated during the laser transmission and focusing process is taken away by circulating water to prevent overheating and damage to the optical components. When the heating wire 12 is welded on the electronic cigarette head 11, the power monitor 401 on the fixed tube 4 provides power to the multi-stage electric push rod 404, so that it operates and pushes the piston plate 405 to move downward in the sleeve 407 filled with magnetorheological fluid. Through the magnetorheological fluid, the pressure tube 403 operates downward, so that the positioning member 9 and the positioning rod 10 press the heating wire 12 down and fit it on the electronic cigarette head 11 for positioning. After the positioning rod 10 presses the heating wire 12 downward for positioning and fitting, the multi-stage electric push rod 404 supplies power to the electromagnet 406 and the positioning rod 10. After the current passes through the two positioning rods 10 and the heating wire 12, the electromagnet 406 forms a current path, generates a magnetic field and acts on the magnetorheological fluid to change its viscosity. At the same time, the heating wire 12 is energized to generate heat, which heats and melts the protective layer on its surface. If the protective layer on the surface of the heating wire 12 is thicker and has a larger resistance, the current and voltage passing through the electromagnet 406 are lower, resulting in weaker magnetic force. Under the action of shear stress, the magnetorheological fluid flows relatively slowly through the center of the sleeve 407, causing the multi-stage electric push rod 404 to continuously push the piston plate 405 downward to extend the pressure tube 403 in the sleeve 407. At the same time, when the two power supply monitors 401 on the fixed tube 4 detect that the protective layer is thicker and has a larger resistance, the circuit data is fed back to the laser generator 2 through the cable 402. The laser generator 2 increases the laser output power according to the feedback data to ensure that the laser power required for welding can penetrate the protective layer, and weld the heating wire 12 and the electronic cigarette head 11 to avoid cold welding. On the contrary, if the protective layer on the surface of the heating wire 12 is thinner and the shear stress of the magnetorheological fluid is larger, it will be in the sleeve 407. The inner part remains relatively still and cannot flow from the center of the sleeve 407. At this time, the multi-stage electric push rod 404 stops pushing the piston plate 405, and the pressing tube 403 keeps the relative position unchanged when the heating wire 12 and the positioning rod 10 are fitted. When the power supply monitor 401 detects that the protective layer is thin and the resistance is small, the data is fed back to the laser generator 2 through the cable 402 to adjust the laser output power to avoid over-welding caused by excessive laser power. When the laser welding of the heating wire 12 is completed, when the multi-stage electric push rod 404 contracts to make the pressing tube 403 lift and separate the positioning rod 10 and the heating wire 12, the solidified protective layer sticks the two together. When the positioning rod 10 is lifted, the sticky tension of the protective layer separates it from the heating wire 12, and the welded heating wire 12 is slightly pulled to perform a slight tension test to detect the quality of the welding. The fixing member 503 and the vacuum pump 8 are installed and used through the fixing platform 502. When in use, the electronic cigarette head 11 is oriented and placed in the fixing member 503 to provide positioning support when the electronic cigarette head 11 is welded to the heating wire 12. The spring member 504 arranged below the fixing member 503 enables the fixing member 503 to be limited and engaged in the fixing platform 502 when the positioning rod 10 presses the heating wire 12 downward to position it. When the resistance of the heating wire 12 is relatively large, the pressure tube 403 is slowly pushed downward by the magnetorheological fluid, so that the positioning rod 10 presses the fixing member 503 downward into the fixing platform 502. When the fixing member 503 is pressed into the fixing platform 502, the fixing member 503 and the fixing platform 502 fit together, so that the gas entering the notch is reduced, so that the vacuum pump 8 can be operated to extract air from the fixing member 503. The gas sucked into the port 801 is reduced, and the amount of gas discharged from the exhaust pipe 802 is reduced. When the resistance of the heating wire 12 is small, the pressure tube 403 stops pressing down under the shear stress of the magnetorheological fluid, thereby reducing the distance of pressing the fixing member 503 into the fixing table 502. At this time, the gas entering the notch will increase relatively, and vice versa, thereby increasing the amount of gas discharged from the exhaust pipe 802. Secondly, the protective gas during welding, such as nitrogen or argon, is provided to the positioning table 5 through the gas tank 7, the cross valve 701 and the air guide pipe 702. When the protective gas is blown out from the gas outlet slot through the positioning table 5, the protective gas is guided to flow around and fill the positioning table 5 through the inclined guide plate 501, thereby isolating the oxygen in the air in the positioning table 5 to prevent oxidation of the welding area; When the amount of gas discharged from the exhaust pipe 802 decreases, the amount of gas entering the cross valve 701 decreases and the air pressure is low, so that the spring member 703 is compressed to a shorter distance. At this time, the air guide groove 705 on the piston valve 704 has a larger opening position in the cross valve 701, thereby increasing the flow rate of the protective gas in the gas tank 7 through the air guide groove 705, thereby increasing the amount of protective gas discharged through the air outlet groove on the positioning platform 5, so as to improve the isolation of the protective gas in the positioning platform 5 from the oxygen in the welding area and improve the welding quality. When the amount of discharged gas is large, vice versa, at this time, the spring member 2 703 is compressed for a longer distance, the opening of the gas guide groove 705 on the piston valve 704 is reduced, and the flow rate of the protective gas is reduced, but it is still sufficient to isolate the oxygen in the welding area when the laser welding power is low, thereby improving the welding quality and reducing the consumption of the protective gas. Secondly, the gas discharged from the exhaust pipe 802 is discharged to the outside through the exhaust port 706 of the cross valve 701, so that the protective gas circulates through the gas in the positioning table 5 to maintain the stable quality of the protective gas for use.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic welding device for heating wires used in the production of electronic cigarettes, comprising a welding table (1), a laser generator (2), a focusing tube (203), and a supporting table plate (102) fixedly mounted on one side of the welding table (1), characterized in that: Mounting frames (3) are provided on both sides of the upper end of the focusing tube (203), and the mounting frames (3) are fixedly mounted on the supporting table (102); a fixing tube (4) is fixedly mounted on one side of the mounting frame (3); a power monitor (401) for real-time sampling and measurement of parameters such as voltage and current of power input and output is fixedly mounted on the upper end of the fixing tube (4); a cable (402) is fixedly mounted on the power monitor (401), and the power monitor (401) is connected to the laser generator (2) via the cable (402); a pressing tube (403) is movably mounted on the lower end of the fixing tube (4), and a positioning member (9) is fixedly mounted below the pressing tube (403); and a positioning rod (10) for downward positioning is fixedly mounted below the positioning member (9); A multi-stage electric push rod (404) is fixedly mounted on the upper part of the interior of the fixed tube (4), and the multi-stage electric push rod (404) is located below the mounting frame (3) in the fixed tube (4), and a piston plate (405) is fixedly mounted below the multi-stage electric push rod (404). A sleeve (407) filled with magnetorheological fluid is fixedly connected to the interior of the fixed tube (4), and the piston plate (405) and the pressure tube (403) are respectively located at the upper and lower ends of the interior of the sleeve (407) and are movably connected thereto, and an electromagnet (406) is nested and mounted on the middle outer side of the sleeve (407).

2. The automatic welding device for heating wires used in the production of electronic cigarettes according to claim 1 is characterized in that: A support rod (101) fixed to the welding table (1) for support is fixedly mounted below the laser generator (2), and a side door (104) is movably mounted below the welding table (1), and a transparent baffle (103) is fixedly mounted on one side of the support table plate (102).

3. The automatic welding device for heating wires used in the production of electronic cigarettes according to claim 1, characterized in that: A gas tank (7) is fixedly placed inside the welding table (1), and a cross valve (701) is connected to the top of the gas tank (7), and an air guide pipe (702) is connected to the top of the cross valve (701), and the air guide pipe (702) is connected to the positioning table (5) arranged on the welding table (1).

4. The automatic welding device for heating wires used in the production of electronic cigarettes according to claim 3, characterized in that: The inner side of the positioning platform (5) is equidistantly surrounded by guide plates (501) which are inclined and used for guiding flow, and the positioning platform (5) below the guide plates (501) is provided with air outlet grooves, a fixing platform (502) is fixedly installed at the inner center of the positioning platform (5), and an air pump (8) is fixedly installed below the fixing platform (502), a fixing member (503) is movably installed on the inner side of the fixing platform (502), and a spring member (504) connected to the air pump (8) is fixedly installed below the fixing member (503).

5. The automatic welding device for heating wires used in the production of electronic cigarettes according to claim 4, characterized in that: The air extraction port (801) provided on the upper side of the air extraction pump (8) is located directly below the fixing member (503), and the exhaust pipe (802) provided on one side of the air extraction pump (8) is connected to one side of the cross valve (701).

6. The automatic welding device for heating wires used in the production of electronic cigarettes according to claim 3, characterized in that: A second spring component (703) is fixedly mounted on one side of the interior of the cross valve (701), and the other end of the second spring component (703) is connected to a piston valve (704) movably mounted in the gas tank (7), a triangular air guide groove (705) is provided through the middle of the piston valve (704), an exhaust port (706) for exhausting air is provided at the lower side of one side of the piston valve (704), and the exhaust port (706) is provided through the bottom of the cross valve (701).

7. The automatic welding device for heating wires used in the production of electronic cigarettes according to claim 4, characterized in that: An electronic cigarette head (11) for welding a carrier is embedded and mounted on the fixing member (503), and a heating wire (12) to be welded is embedded and mounted on the upper inner side of the electronic cigarette head (11).

8. The automatic welding device for heating wires used in electronic cigarette production according to claim 1, characterized in that: A collimator (201) for shaping and collimating a laser beam generated by the laser generator (2) is fixedly mounted on one side of the laser generator (2); a reflective cavity (202) for adjusting the laser angle is fixedly mounted on one side of the collimator (201); a focusing tube (203) is arranged below the reflecting cavity (202); and a water cooling mechanism (6) for heat dissipation and temperature reduction is provided on the collimator (201), the reflecting cavity (202) and the focusing tube (203).

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