Split type gas shielded welding machine and using method thereof

Abstract

The invention discloses a split type gas shielded welding machine, and relates to the technical field of welding machines, the split type gas shielded welding machine comprises a bottom plate, a welding power source is arranged on the top of the bottom plate close to the edge of one side, one end of the welding power source is coupled with an equipment welding gun through a wire, and a gas tank used for conveying shielding gas to the welding gun is arranged on the top of the bottom plate close to the center. When the ship body welding device is used and before a ship body is welded, due to the fact that many impurities and metal particles exist on the surface of the ship body, in the welding process, firstly, the impurities on the surface of the ship body are cleaned through rotation of cleaning equipment, meanwhile, the surface of the ship body is heated through an infrared heating pipe, the follow-up ship body welding quality is improved, and meanwhile, the welding efficiency is improved. The two negative pressure pumps are started, negative pressure is generated in the dust collection bin, cleaned impurities are collected into the dust collection bin under the action of pressure difference to be collected, and through the action of the pretreatment assembly, the split type gas shielded welding machine integrates pretreatment, cleaning and welding.

Description

Technical Field

[0001] The present invention relates to the technical field of welding machines, in particular to a split-type gas shielded welding machine and a method of using the same. Background Art

[0002] A split-type gas shielded welding machine is a type of gas shielded welding equipment that separates the welding power source from the welding gun. It is mainly used for metal-metal gas shielded welding and tungsten-arc argon welding processes. Its split design makes it significantly different from an integrated welding machine in structure, function, and application scenarios. Split-type gas shielded welding machines are often used for ship welding.

[0003] In the prior art, since most ship hulls are made of metal iron, split-type gas shielded welding machines are often used in the process of welding the ship hull. In order to ensure the quality of the hull welding, the surface of the hull needs to be pretreated before welding. However, since most existing split-type gas shielded welding machines do not have a preheating function, workers are often required to use independent preheating equipment to preheat the surface of the hull, which increases the labor intensity of the workers.

[0004] Therefore, we propose a split-type gas shielded welding machine and a method of using the same in order to solve the problems raised above. Summary of the Invention

[0005] The object of the present invention is to provide a split-type gas shielded welding machine and a method of using the same, so as to solve the problem in the above background technology that most split-type gas shielded welding machines do not have a pretreatment function, which increases the labor intensity of the workers.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a split-type gas shielded welding machine, comprising a base plate, a welding power supply is arranged at the top of the base plate near one side edge, one end of the welding power supply is coupled to a welding gun through a wire, a gas tank for supplying shielding gas to the welding gun is arranged near the center of the top of the base plate, a positioning assembly for positioning the welding gun is arranged near the front surface of the top of the base plate, a pretreatment assembly for performing preliminary treatment of the weld is arranged at the bottom of the positioning assembly, the pretreatment assembly comprises a guard plate bracket, two cleaning devices for cleaning impurities on the surface of the object to be welded are arranged on the outer surface of the guard plate bracket, an infrared heating tube for heating and pre-treating the weld part is arranged between the outer surfaces of the two cleaning devices, and dust suction bins for collecting impurities are arranged on the outer surfaces of the two cleaning devices, the two cleaning devices clean the dust on the surface of the weld part while heating and pre-treating the weld part through the infrared heating tube, and at the same time, the cleaned impurities are collected into the inside of the two dust suction bins under the action of negative pressure.

[0007] Preferably, the pretreatment component also includes a stepper motor, the output ends of the stepper motor are fixedly connected to a screw rod, a limiting tube is fixedly installed between the relative inner walls of the guard plate bracket, and a sliding frame is provided on the outer surface threaded sleeve of the screw rod.

[0008] Preferably, vertical rods are fixedly installed between the relative inner walls of the sliding frame near the edges on both sides, and connecting rods are rotatably sleeved on the outer surfaces of the two vertical rods. Load-bearing frames are fixed on the outer surface of the guard plate bracket near the edges on both sides, and springs are provided on the inner walls of the two load-bearing frames, and extrusion balls are provided at one end of the two springs.

[0009] Preferably, the outer surfaces of the two dust suction bins are fixedly connected with a connecting pipe, one end of the two connecting pipes is fixedly connected with a dust suction port, the outer surfaces of the two dust suction bins are fixedly installed with a negative pressure pump by screws, the output ends of the two negative pressure pumps are fixedly connected with a negative pressure pipe, an elastic member is arranged between the outer surfaces of the two connecting rods, and the outer surface of the sliding frame is fixedly installed with a supporting frame.

[0010] Preferably, the internal rotation of the carrier is connected to a positioning tube, the outer surface fixed sleeve of the positioning tube is provided with a driven gear, the outer surface of the sliding frame is fixed with a forward and reverse motor by screws, the output end of the forward and reverse motor is fixedly connected to a driving rod, the outer surface fixed sleeve of the driving rod is provided with a driving gear, and the outer surface fixed sleeve of the positioning tube is provided with a moving rod.

[0011] Preferably, the outer surface of the stepper motor is fixedly connected to the inner wall of the guard plate bracket by screws, one end of the screw rod is movable and penetrates to the outside of the guard plate bracket, the inner wall of the sliding frame is slidably connected to the outer surface of the limiting tube, the outer surface of the sliding frame is slidably connected to the inner wall of the guard plate bracket, one end of the two connecting rods are respectively movable and penetrate to the outside of the two load-bearing frames, and one end of the two springs are respectively fixedly connected to the inner walls of the two load-bearing frames.

[0012] Preferably, the other ends of the two springs are fixedly connected to the outer surfaces of the two squeezing balls respectively, one ends of the two negative pressure tubes are fixedly passed through the interior of the two dust collection bins respectively, one end of the positioning tube is movably passed through the interior of the sliding frame, the outer surface of the driven gear is meshed with the outer surface of the driving gear, the outer surfaces of the two cleaning devices are fixedly connected to the outer surface of the moving rod, and the infrared heating tube is arranged inside the moving rod.

[0013] Preferably, the positioning assembly includes a driving mechanism, and a plurality of magnetic blocks are provided on the outer surfaces of the four driving wheel parts of the driving mechanism. A pressure-resistant frame is fixedly installed on the outer surface of the driving mechanism near the center, and a servo motor is fixedly installed on the outer surface of the pressure-resistant frame by screws. A driving shaft is fixed to the output end of the servo motor, and the two ends of the driving shaft are respectively movable to the opposite outsides of the pressure-resistant frame. A limit block is fixedly provided on the outer surface of the driving shaft, and the limit block is arranged inside the pressure-resistant frame. The inner wall of the limit block is fixedly connected to the outer surface of the welding gun by screws, and a camera is provided on the front surface of the driving mechanism.

[0014] Preferably, the outer surface of the gas tank is fixedly connected to a delivery pipe, one end of the delivery pipe is equipped with a gas nozzle, the outer surface of the gas nozzle is fixedly connected to the outer surface of the welding gun through an auxiliary frame, the outer surface of the base plate is provided with a wire feeding assembly, and the wire feeding assembly includes a support frame, the bottom of the support frame is fixedly connected to the top of the base plate, the outer surface of the support frame is fixedly installed with a driving motor by screws, the output end of the driving motor is fixedly connected to a wire feeding wheel, the two ends of the wire feeding wheel are respectively movable and pass through the opposite outsides of the support frame, the outer surface of the wire feeding wheel is wrapped with welding wire, and the outer surface of the support frame is coupled to a wire feeding hose, one end of the welding wire passes through the interior of the wire feeding hose, one end of the wire feeding hose is coupled to the outer surface of the welding gun, and one end of the welding wire is coupled to one end of the welding gun.

[0015] The method of using a split type gas shielded welding machine includes the following steps:

[0016] S1. When a split-type gas shielded welding machine is used to weld a ship hull, the drive mechanism is first placed on the part to be welded, so that multiple magnetic blocks are attracted to the outer surface of the welded part. The drive mechanism is then started, and the specific position of the welded part is detected by a camera.

[0017] S2. The end of the welding gun is driven by the driving mechanism to rotate to the position corresponding to the part to be welded, and the two connecting rods are driven forward by the stepping motor, so that both ends of the elastic member are stretched by the taper, thereby causing the two dust collection bins to move forward until both dust collection bins move to both sides of the driving mechanism;

[0018] S3. As the sliding frame moves forward, the cleaning device is also moved between the outer surfaces of the two dust collection bins. The forward and reverse motors are activated to drive the moving rod to rotate back and forth, and the two negative pressure pumps are activated to generate negative pressure in the dust collection bins, which absorbs impurities into the dust collection bins for collection. At the same time, the infrared heating tubes are activated.

[0019] S4. Heat the surface of the hull, then start the welding power supply and open the switch valve of the gas tank at the same time, so that the shielding gas CO2 is ejected outward through the gas nozzle. At the same time, start the drive motor, release the welding wire, and weld the hull through the welding gun. When welding the curved surface, the servo motor drives the welding gun and the gas nozzle to rotate synchronously until the welding gun and the hull surface maintain a suitable relative position.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. When in use, before welding the hull, since there are many impurities and metal particles on the surface of the hull, during the welding process, the impurities on the surface of the hull are first cleaned by rotating the cleaning equipment, and the surface of the hull is heated by the infrared heating tube to improve the quality of subsequent hull welding. At the same time, two negative pressure pumps are started to generate negative pressure in the dust suction chamber. Under the action of the pressure difference, the cleaned impurities are collected into the dust suction chamber for collection. Through the action of the pretreatment component, the split gas shielded welding machine integrates pretreatment, cleaning and welding, which improves the welding quality while reducing the labor intensity of the workers, solving the problem that most split gas shielded welding machines in the existing technology do not have a pretreatment function and increase the labor intensity of the workers;

[0022] 2. When using the split-type gas shielded welding machine to weld the hull, first place the driving mechanism on the part to be welded, so that the driving wheel part of the driving mechanism contacts the outer surface of the welding part, so that multiple magnetic blocks are adsorbed on the outer surface of the welding part, and then start the driving mechanism, detect the specific position of the part to be welded through the camera, and drive the welding gun to move until the end of the welding gun rotates to the position corresponding to the part to be welded, so that the welding machine moves smoothly on the surface of the hull to weld the hull, and the staff does not need to hold the welding gun to weld, thereby reducing the labor intensity of the staff;

[0023] 3. During use, when welding on curved surfaces, start the servo motor to drive the drive shaft to rotate, and then drive the limit block to rotate, so that the welding gun and the gas nozzle rotate synchronously until the welding gun and the hull surface maintain a suitable relative position. Through the role of the positioning component, the split gas shielded welding machine can automatically and smoothly weld different surfaces of the hull. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front perspective view of the split-type gas shielded welding machine of the present invention;

[0025] Figure 2 It is a three-dimensional diagram of the welding gun portion of the split-type gas shielded welding machine of the present invention;

[0026] Figure 3It is a partial perspective view of the wire feeding assembly of the split-type gas shielded welding machine of the present invention;

[0027] Figure 4 It is a partial perspective view of the driving mechanism of the split-type gas shielded welding machine of the present invention;

[0028] Figure 5 It is a three-dimensional diagram of the pressure-resistant frame of the split-type gas shielded welding machine of the present invention;

[0029] Figure 6 It is a partial perspective view of the sliding frame of the split-type gas shielded welding machine of the present invention;

[0030] Figure 7 It is a partial three-dimensional diagram of the elastic component of the split-type gas shielded welding machine of the present invention;

[0031] Figure 8 It is a partially cutaway perspective view of the load-bearing frame of the split-type gas shielded welding machine of the present invention;

[0032] Figure 9 It is a three-dimensional diagram of the dust collection chamber of the split-type gas shielded welding machine of the present invention;

[0033] Figure 10 It is a three-dimensional diagram of the driving gear portion of the split-type gas shielded welding machine of the present invention;

[0034] Figure 11 It is a partial three-dimensional diagram of the cleaning equipment of the split-type gas shielded welding machine of the present invention.

[0035] In the picture:

[0036] 1. Base plate; 2. Welding power source; 3. Gas tank; 4. Welding gun; 5. Delivery pipe; 6. Gas nozzle; 7. Wire feed assembly; 701. Support frame; 702. Drive motor; 703. Wire feed roll; 704. Welding wire;

[0037] 705, wire feeding hose; 8, positioning assembly; 801, driving mechanism; 802, magnetic block; 803, pressure-resistant frame; 804, servo motor; 805, driving shaft; 806, stop block; 807, camera; 9, pre-treatment assembly; 901, guard plate bracket; 902, stepping motor; 903, screw rod; 904, stop tube; 905, sliding frame; 906, vertical rod; 907, connecting rod; 908, bearing Heavy frame; 909, spring; 910, squeezing ball; 911, dust collection bin; 912, connecting pipe; 913, dust collection port; 914, negative pressure pump; 915, negative pressure pipe; 916, elastic part; 917, carrier frame; 918, positioning pipe; 919, driven gear; 920, forward and reverse motor; 921, driving rod; 922, driving gear; 923, moving rod; 924, cleaning equipment; 925, infrared heating tube. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0039] Reference Figure 1-11 As shown: a split-type gas shielded welding machine, the positioning component 8 includes a driving mechanism 801, and the outer surfaces of the four driving wheel parts in the driving mechanism 801 are each provided with a plurality of magnetic blocks 802. A pressure-resistant frame 803 is fixedly installed on the outer surface of the driving mechanism 801 near the center. A servo motor 804 is fixedly installed on the outer surface of the pressure-resistant frame 803 by screws. A driving shaft 805 is fixed to the output end of the servo motor 804. The two ends of the driving shaft 805 are respectively movable and observed to the opposite outsides of the pressure-resistant frame 803. A fixed sleeve is provided on the outer surface of the driving shaft 805 with a limit block 806. The limit block 806 is arranged inside the pressure-resistant frame 803. The inner wall of the limit block 806 is fixedly connected to the outer surface of the welding gun 4 by screws. A camera 807 is provided on the front surface of the driving mechanism 801. The outer surface of the gas tank 3 is fixedly connected to the delivery pipe 5. The delivery pipe 5 A gas nozzle 6 is provided at one end of the device, and the outer surface of the gas nozzle 6 is fixedly connected to the outer surface of the welding gun 4 through an auxiliary frame. A wire feeding assembly 7 is provided on the outer surface of the base plate 1, and the wire feeding assembly 7 includes a support frame 701. The bottom of the support frame 701 is fixedly connected to the top of the base plate 1, and the outer surface of the support frame 701 is fixedly installed with a driving motor 702 by screws. The output end of the driving motor 702 is fixedly connected to a wire feeding wheel 703, and the two ends of the wire feeding wheel 703 are respectively movable and penetrate into the opposite outsides of the support frame 701. The outer surface of the wire feeding wheel 703 is wrapped with welding wire 704, and the outer surface of the support frame 701 is coupled with a wire feeding hose 705. One end of the welding wire 704 penetrates into the interior of the wire feeding hose 705, one end of the wire feeding hose 705 is coupled to the outer surface of the welding gun 4, and one end of the welding wire 704 is coupled to one end of the welding gun 4.

[0040] In this embodiment, since the hull of a ship is mostly made of iron products, when a split-type gas shielded welding machine is needed to weld the hull, the driving mechanism 801 is first placed on the part that needs to be welded, so that the driving wheel part of the driving mechanism 801 contacts the outer surface of the welding part, so that the multiple magnetic blocks 802 are adsorbed on the outer surface of the welding part, and then the driving mechanism 801 is started. The working principle of the driving mechanism 801 is to control the stable movement of the driving mechanism 801 through the collaborative design of the driving mechanism 801 and its own intelligent control, using a DC motor and a planetary gear reducer. At the same time, the camera 807 is started through an external control system, and the specific position of the part to be welded is detected by the camera 807, and the detected signal is transmitted to the external control system. The driving mechanism 801 is started by the control system to drive the welding gun 4 to move until the end of the welding gun 4 rotates to the position corresponding to the part to be welded, and then the welding power supply 2 can be started, and the switch valve of the gas tank 3 is opened at the same time to make the welding gun 4 move. The shielding gas CO2 is ejected outwards through the gas nozzle 6, and at the same time the drive motor 702 is started, driving the wire feed wheel 703 to rotate, thereby unwinding the welding wire 704 on its surface and entering the interior of the welding gun 4 through the wire feed hose 705. A voltage is applied between the nozzle of the welding gun 4 and the hull base material. The electrons and ions in the arc move at high speed under the action of the electric field, colliding with gas molecules and metal atoms, converting electrical energy into heat energy. The welding wire 704 is connected to the positive electrode and the base material is connected to the negative electrode. At this time, the arc heat is distributed as follows: the welding wire 704 accounts for 30%, and the base material accounts for 10%. It accounts for 70%, ensuring the penetration of the base material. When the welding current passes through the welding wire 704, resistance heat is generated. At the same time, the arc heat directly heats the tip of the welding wire 704. During the short-circuit transition, the molten droplet of the welding wire 704 transitions in the form of fine particles to weld the hull. At the same time, the driving mechanism 801 is continued to be started through the external control system to make it move stably on the surface of the hull, and through the cooperation of the camera 807, the surface of the hull is welded smoothly, and there is no need for the staff to hold the welding gun 4 for welding, thereby reducing the labor intensity of the staff.

[0041] like Figure 1 and Figure 5-Figure 6 As shown, the positioning assembly 8 includes a driving mechanism 801, and a plurality of magnetic blocks 802 are provided on the outer surfaces of the four driving wheel parts of the driving mechanism 801. A pressure-resistant frame 803 is fixedly installed near the center of the outer surface of the driving mechanism 801, and a servo motor 804 is fixedly installed on the outer surface of the pressure-resistant frame 803 by screws. A driving shaft 805 is fixed to the output end of the servo motor 804, and the two ends of the driving shaft 805 are respectively movable to observe the opposite outsides of the pressure-resistant frame 803. A limit block 806 is fixedly sleeved on the outer surface of the driving shaft 805, and the limit block 806 is arranged inside the pressure-resistant frame 803. The inner wall of the limit block 806 is fixedly connected to the outer surface of the welding gun 4 by screws, and a camera 807 is provided on the front surface of the driving mechanism 801.

[0042] In this embodiment, during the process of welding the hull, since the surface of the hull is mostly curved and arc-shaped, when welding the curved surface, in order to further ensure that the welding gun 4 maintains contact with the hull surface, the servo motor 804 is started by the control system to drive the drive shaft 805 to rotate, and then drive the limit block 806 to rotate, so that the welding gun 4 and the gas nozzle 6 rotate synchronously until the welding gun 4 maintains a suitable relative position with the hull surface. Through the action of the positioning component 8, the split gas shielded welding machine can automatically and smoothly weld different surfaces of the hull.

[0043] like Figure 1 and Figure 4-11As shown, the split-type gas shielded welding machine includes a base plate 1, a welding power source 2 is set near the edge of one side of the top of the base plate 1, one end of the welding power source 2 is coupled to a welding gun 4 through a wire, a gas tank 3 for supplying shielding gas to the welding gun 4 is set near the center of the top of the base plate 1, a positioning component 8 for positioning the welding gun 4 is set near the front surface of the top of the base plate 1, a pretreatment component 9 for performing preliminary treatment on the welding part is set at the bottom of the positioning component 8, the pretreatment component 9 includes a guard plate bracket 901, and two cleaning devices 924 for cleaning impurities on the surface of the object to be welded are set on the outer surface of the two cleaning devices 924, and an infrared heating tube 925 for heating the welding part for pretreatment is set between the outer surfaces of the two cleaning devices 924. The outer surface of the equipment 924 is provided with a dust collection bin 911 for collecting impurities. The two cleaning devices 924 clean the dust on the surface of the welding part and pre-heat the welding part through the infrared heating tube 925. At the same time, the cleaned impurities are collected into the two dust collection bins 911 under the action of negative pressure. The pre-treatment component 9 also includes a stepper motor 902. The output end of the stepper motor 902 is fixedly connected to a screw rod 903. A limiting tube 904 is fixedly installed between the relative inner walls of the guard plate bracket 901. The outer surface of the screw rod 903 is threadedly sleeved with a sliding rack 905. Vertical rods 906 are fixedly installed between the relative inner walls of the sliding rack 905 near the edges on both sides. The outer surfaces of the two vertical rods 906 are rotatably sleeved with connecting rods 907. The outer surface of the plate bracket 901 is fixed with a load-bearing frame 908 near the edges of both sides, the inner walls of the two load-bearing frames 908 are provided with springs 909, and one end of the two springs 909 is provided with an extrusion ball 910. The outer surfaces of the two dust suction bins 911 are fixedly connected with a connecting pipe 912, and one end of the two connecting pipes 912 is fixedly connected with a dust suction port 913. The outer surfaces of the two dust suction bins 911 are fixedly installed with a negative pressure pump 914 by screws, and the output ends of the two negative pressure pumps 914 are fixedly connected with a negative pressure pipe 915. An elastic member 916 is provided between the outer surfaces of the two connecting rods 907, and a supporting frame 917 is fixedly installed on the outer surface of the sliding frame 905. The inner part of the supporting frame 917 is rotatably connected to the positioning pipe 918, and the outer side of the positioning pipe 918 is fixedly connected. The surface fixing sleeve is provided with a driven gear 919, and the outer surface of the sliding frame 905 is fixedly installed with a forward and reverse motor 920 by screws. The output end of the forward and reverse motor 920 is fixedly connected to a driving rod 921, and the outer surface fixing sleeve of the driving rod 921 is provided with a driving gear 922. The outer surface fixing sleeve of the positioning tube 918 is provided with a moving rod 923. The outer surface of the stepping motor 902 is fixedly connected to the inner wall of the guard plate bracket 901 by screws. One end of the screw rod 903 is movable and penetrates to the outside of the guard plate bracket 901. The inner wall of the sliding frame 905 is slidably connected to the outer surface of the limiting tube 904. The outer surface of the sliding frame 905 is slidably connected to the inner wall of the guard plate bracket 901. One end of the two connecting rods 907 is respectively movable and penetrates to the outside of the two load-bearing frames 908.One end of the two springs 909 is fixedly connected to the inner walls of the two load-bearing frames 908, and the other end of the two springs 909 is fixedly connected to the outer surfaces of the two squeezing balls 910. One end of the two negative pressure tubes 915 is fixedly inserted into the interior of the two dust collection bins 911, and one end of the positioning tube 918 is movable and inserted into the interior of the sliding frame 905. The outer surface of the driven gear 919 is meshed with the outer surface of the driving gear 922. The outer surfaces of the two cleaning devices 924 are fixedly connected to the outer surface of the moving rod 923. The infrared heating tube 925 is set inside the moving rod 923.

[0044] In this embodiment, before welding the hull, since there are many impurities and metal particles on the surface of the hull, during the welding process, in order to prevent the presence of impurities from affecting the welding effect of the welding machine, the stepper motor 902 is first started by the external control system to drive the screw rod 903 to rotate, and then drive the sliding frame 905 to move along the outer surface of the screw rod 903 toward the outside of the driving mechanism 801, thereby driving the two connecting rods 907 to move forward, wherein, as shown in FIG. Figure 7 As shown, since the two connecting rods 907 are respectively limited by the two load-bearing frames 908, when the connecting rod 907 moves in the direction of the two load-bearing frames 908, the angle between the two connecting rods 907 increases, thereby causing both ends of the elastic member 916 to be tapered and extended, thereby causing the two connecting rods 907 to squeeze the two corresponding squeezing balls 910 respectively, causing the two springs 909 to be squeezed and shortened, thereby causing the two dust collection bins 911 to move away from each other during the forward movement until the two dust collection bins 911 move to both sides of the driving mechanism 801. At the same time, during the forward movement of the sliding frame 905, the moving rod 923 is also driven to move forward, thereby driving the two cleaning devices 924 to move forward to the outside of the driving mechanism 801 and set between the outer surfaces of the two dust collection bins 911, wherein, as shown in FIG. Figure 11The surface of the cleaning device 924 shown in the figure that contacts the hull is provided with multiple cleaning heads, the purpose of which is to clean the dirt that is adhered to the surface of the hull and is difficult to clean. During the cleaning process, the forward and reverse motors 920 are started to drive the driving rod 921 to rotate, and then drive the driving gear 922 to rotate, thereby driving the driven gear 919 to rotate, so that the moving rod 923 rotates, thereby cleaning the hull surface in all directions, and at the same time, the two negative pressure pumps 914 are started to draw gas into the interior of the two dust suction bins 911 through the two negative pressure pipes 915 respectively, so that negative pressure is generated in the dust suction bin 911, and under the action of the pressure difference, external impurities are sucked in through the dust suction port 913 and transported to the interior of the dust suction bin 911 through the connecting pipe 912. The slag is collected and the impurities on the surface of the hull are cleaned and collected. While cleaning, the infrared heating tube 925 is started to heat the surface of the hull. The working principle of the infrared heating tube 925 is an existing mature technology and will not be introduced in detail here. After the temperature of the iron material increases, the viscosity of the molten pool metal decreases and the fluidity increases, which facilitates the escape of gas and the floating of slag, and reduces the occurrence of unfused slag during welding. Through the action of the pretreatment component 9, the split-type gas shielded welding machine integrates pretreatment, cleaning, and welding, which improves the welding quality while reducing the labor intensity of the staff, and solves the problem that most split-type gas shielded welding machines in the existing technology do not have a pretreatment function, which increases the labor intensity of the staff.

[0045] In the present invention, when a split-type gas shielded welding machine is needed to weld a ship hull, the driving mechanism 801 is first placed on the part to be welded, so that the driving wheel part of the driving mechanism 801 contacts the outer surface of the welding part, so that the multiple magnetic blocks 802 are adsorbed on the outer surface of the welding part, and then the driving mechanism 801 is started, and at the same time, the camera 807 is started through the external control system, and the specific position of the part to be welded is detected by the camera 807, and the detected signal is transmitted to the external control system. The driving mechanism 801 is started by the control system to drive the welding gun 4 to move until the end of the welding gun 4 rotates to the position corresponding to the part to be welded, and then the stepping motor 902 is started through the external control system to drive the screw rod 9 03 rotates, thereby driving the sliding frame 905 to move along the outer surface of the screw rod 903 toward the outside of the driving mechanism 801, thereby driving the two connecting rods 907 to move forward, thereby causing both ends of the elastic member 916 to be tapered and extended, thereby causing the two connecting rods 907 to squeeze the two corresponding squeezing balls 910 respectively, causing the two springs 909 to be squeezed and shortened, thereby causing the two dust collection bins 911 to move away from each other during the forward movement, until the two dust collection bins 911 move to both sides of the driving mechanism 801. At the same time, in the process of the sliding frame 905 moving forward, it also drives the moving rod 923 to move forward, thereby driving the two cleaning devices 924 to move forward to the outside of the driving mechanism 801 and set Between the outer surfaces of the two dust collection bins 911, during the cleaning process, the forward and reverse motors 920 are started to drive the driving rod 921 to rotate, and then the driving gear 922 is driven to rotate, thereby driving the driven gear 919 to rotate, so that the moving rod 923 is rotated, thereby cleaning the hull surface in all directions, and at the same time, the two negative pressure pumps 914 are started to extract gas into the interior of the two dust collection bins 911 through the two negative pressure pipes 915 respectively, so that negative pressure is generated in the dust collection bin 911, and under the action of the pressure difference, external impurities are sucked in through the dust collection port 913 and transported to the interior of the dust collection bin 911 through the connecting pipe 912 for collection. While cleaning, the infrared heating tube 925 is started to heat the surface of the hull. After the temperature of the iron material rises, The viscosity of the molten metal in the molten pool is reduced and its fluidity is enhanced, which facilitates gas overflow and slag floating, reducing the occurrence of unfused slag during welding. Then the welding power supply 2 can be started, and the switch valve of the gas tank 3 is opened at the same time, so that the shielding gas CO2 is ejected outward through the gas nozzle 6. At the same time, the drive motor 702 is started to drive the wire feeding wheel 703 to rotate, thereby unwinding the welding wire 704 on its surface and entering the interior of the welding gun 4 through the wire feeding hose 705. A voltage is applied between the nozzle of the welding gun 4 and the hull base material. When the tip of the welding wire 704 approaches the base material to a certain distance, the electric field strength exceeds the air ionization threshold, causing the gas molecules to ionize into electrons and positive ions, forming a conductive channel and generating an arc. The electrons and ions in the arc move at high speed under the action of the electric field.The collision of gas molecules and metal atoms converts electrical energy into thermal energy. The welding wire 704 is connected to the positive electrode and the base material is connected to the negative electrode. At this time, the arc heat is distributed as 30% for the welding wire 704 and 70% for the base material to ensure the penetration of the base material. When the welding current passes through the welding wire 704, resistance heat is generated. At the same time, the arc heat directly heats the tip of the welding wire 704. During the short-circuit transition, the molten droplets of the welding wire 704 transition in the form of fine particles, and the molten droplets are ejected axially to ensure uniform weld formation. The hull is welded, and at the same time, the drive mechanism 801 is continuously started through the external control system to make it move stably on the surface of the hull. Through the cooperation of camera 807, the hull surface is welded smoothly without the need for workers to hold the welding gun 4. In addition, during the hull welding process, since the hull surface is mostly curved and arc-shaped, when welding on curved surfaces, in order to further ensure that the welding gun 4 maintains contact with the hull surface, the servo motor 804 is activated by the control system, driving the drive shaft 805 to rotate, and then driving the limit block 806 to rotate, so that the welding gun 4 and the gas nozzle 6 rotate synchronously until the welding gun 4 maintains a suitable relative position with the hull surface.

[0046] The wiring diagram of the welding power supply 2, welding gun 4, gas nozzle 6, drive motor 702, drive mechanism 801, servo motor 804, camera 807, stepper motor 902, negative pressure pump 914, forward and reverse motor 920 and infrared heating tube 925 in the present invention is common knowledge in the field. Its working principle is already known technology, and its model is selected according to actual use. Therefore, the control method and wiring layout of the welding power supply 2, welding gun 4, gas nozzle 6, drive motor 702, drive mechanism 801, servo motor 804, camera 807, stepper motor 902, negative pressure pump 914, forward and reverse motor 920 and infrared heating tube 925 will not be explained in detail.

[0047] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A split-type gas shielded welding machine, comprising a base plate (1), a welding power source (2) being arranged near one side edge of the top of the base plate (1), one end of the welding power source (2) being coupled to a welding gun (4) via a wire, a gas tank (3) for supplying shielding gas to the welding gun (4) being arranged near the center of the top of the base plate (1), and characterized in that: A positioning assembly (8) for positioning the welding gun (4) is provided at the top of the base plate (1) near the front surface, and a pretreatment assembly (9) for performing preliminary treatment on the weld is provided at the bottom of the positioning assembly (8); The pretreatment component (9) includes a guard plate bracket (901), and two cleaning devices (924) for cleaning impurities on the surface of the object to be welded are arranged on the outer surface of the guard plate bracket (901). An infrared heating tube (925) for heating and pretreating the welding part is arranged between the outer surfaces of the two cleaning devices (924). A dust collection bin (911) for collecting impurities is arranged on the outer surfaces of the two cleaning devices (924). The two cleaning devices (924) clean dust on the surface of the welding part and heat and pretreat the welding part through the infrared heating tube (925). At the same time, the cleaned impurities are collected into the inside of the two dust collection bins (911) under the action of negative pressure.

2. The split type gas shielded welding machine according to claim 1, characterized in that: The pretreatment assembly (9) further comprises a stepper motor (902), the output ends of the stepper motor (902) are fixedly connected to a screw rod (903), a limiting tube (904) is fixedly installed between the opposite inner walls of the guard plate bracket (901), and a sliding frame (905) is threadedly sleeved on the outer surface of the screw rod (903).

3. The split type gas shielded welding machine according to claim 2, characterized in that: Vertical rods (906) are fixedly installed between the opposite inner walls of the sliding frame (905) near the edges on both sides, and connecting rods (907) are rotatably sleeved on the outer surfaces of the two vertical rods (906). Load-bearing frames (908) are fixed to the outer surface of the guard plate bracket (901) near the edges on both sides, and springs (909) are provided on the inner walls of the two load-bearing frames (908), and one end of the two springs (909) is provided with an extrusion ball (910).

4. The split type gas shielded welding machine according to claim 3, characterized in that: The outer surfaces of the two dust collection bins (911) are fixedly connected to a connecting pipe (912), one end of each of the two connecting pipes (912) is fixedly connected to a dust collection port (913), the outer surfaces of the two dust collection bins (911) are fixedly mounted with a negative pressure pump (914) via screws, the output ends of the two negative pressure pumps (914) are fixedly connected to a negative pressure pipe (915), an elastic member (916) is provided between the outer surfaces of the two connecting rods (907), and a supporting frame (917) is fixedly mounted on the outer surface of the sliding frame (905).

5. The split type gas shielded welding machine according to claim 4, characterized in that: The interior of the carrier (917) is rotatably connected to a positioning tube (918), the outer surface of the positioning tube (918) is fixedly sleeved with a driven gear (919), the outer surface of the sliding frame (905) is fixedly mounted with a forward and reverse motor (920) by screws, the output end of the forward and reverse motor (920) is fixedly connected to a driving rod (921), the outer surface of the driving rod (921) is fixedly sleeved with a driving gear (922), and the outer surface of the positioning tube (918) is fixedly sleeved with a moving rod (923).

6. The split type gas shielded welding machine according to claim 5, characterized in that: The outer surface of the stepper motor (902) is fixedly connected to the inner wall of the guard plate bracket (901) by screws, one end of the screw rod (903) is movable and penetrates to the outside of the guard plate bracket (901), the inner wall of the sliding frame (905) is slidably connected to the outer surface of the limiting tube (904), the outer surface of the sliding frame (905) is slidably connected to the inner wall of the guard plate bracket (901), one end of the two connecting rods (907) is movable and penetrates to the outside of the two load-bearing frames (908), and one end of the two springs (909) is fixedly connected to the inner walls of the two load-bearing frames (908).

7. The split type gas shielded welding machine according to claim 6, characterized in that: The other ends of the two springs (909) are fixedly connected to the outer surfaces of the two squeezing balls (910), one end of the two negative pressure tubes (915) is fixedly passed through the interior of the two dust collection bins (911), one end of the positioning tube (918) is movably passed through the interior of the sliding frame (905), the outer surface of the driven gear (919) is meshed with the outer surface of the driving gear (922), the outer surfaces of the two cleaning devices (924) are fixedly connected to the outer surface of the moving rod (923), and the infrared heating tube (925) is arranged inside the moving rod (923).

8. The split type gas shielded welding machine according to claim 7, characterized in that: The positioning assembly (8) includes a driving mechanism (801), wherein the outer surfaces of the four driving wheel parts in the driving mechanism (801) are each provided with a plurality of magnetic blocks (802), a pressure-resistant frame (803) is fixedly installed near the center of the outer surface of the driving mechanism (801), a servo motor (804) is fixedly installed on the outer surface of the pressure-resistant frame (803) by screws, a driving shaft (805) is fixed to the output end of the servo motor (804), and the two ends of the driving shaft (805) are respectively movable to the opposite exterior of the pressure-resistant frame (803), a limiting block (806) is fixedly sleeved on the outer surface of the driving shaft (805), the limiting block (806) is provided inside the pressure-resistant frame (803), and the inner wall of the limiting block (806) is fixedly connected to the outer surface of the welding gun (4) by screws, and a camera (807) is provided on the front surface of the driving mechanism (801).

9. The split type gas shielded welding machine according to claim 8, characterized in that: The outer surface of the gas tank (3) is fixedly connected to a delivery pipe (5), one end of the delivery pipe (5) is equipped with a gas nozzle (6), the outer surface of the gas nozzle (6) is fixedly connected to the outer surface of the welding gun (4) through an auxiliary frame, the outer surface of the base plate (1) is provided with a wire feeding assembly (7), the wire feeding assembly (7) includes a support frame (701), the bottom of the support frame (701) is fixedly connected to the top of the base plate (1), the outer surface of the support frame (701) is fixedly mounted with a drive motor (702) by screws, the drive motor (70 2) is fixedly connected to the output end thereof with a wire feeding wheel (703), and the two ends of the wire feeding wheel (703) are respectively movable and penetrate to the opposite exterior of the support frame (701), the outer surface of the wire feeding wheel (703) is wound with a welding wire (704), and the outer surface of the support frame (701) is coupled with a wire feeding hose (705), one end of the welding wire (704) penetrates into the interior of the wire feeding hose (705), one end of the wire feeding hose (705) is coupled to the outer surface of the welding gun (4), and one end of the welding wire (704) is coupled and connected to one end of the welding gun (4).

10. The method of using the split type gas shielded welding machine is characterized in that: The split-type gas shielded welding machine according to claim 9 is used, comprising the following steps: S1. When a split-type gas shielded welding machine is used to weld a ship hull, the driving mechanism (801) is first placed on the portion to be welded, so that the plurality of magnetic blocks (802) are adsorbed on the outer surface of the welded portion, the driving mechanism (801) is started, and the specific position of the portion to be welded is detected by a camera (807); S2. The end of the welding gun (4) is driven to rotate to a position corresponding to the part to be welded by the driving mechanism (801), and the two connecting rods (907) are driven to move forward by the stepping motor (902), thereby causing both ends of the elastic member (916) to be tapered and extended, thereby causing the two dust collection bins (911) to move forward until both dust collection bins (911) move to both sides of the driving mechanism (801); S3. While the sliding frame (905) is moving forward, the cleaning device (924) is also moved between the outer surfaces of the two dust collection bins (911), the forward and reverse motors (920) are started, driving the moving rod (923) to rotate back and forth, and the two negative pressure pumps (914) are started to generate negative pressure in the dust collection bin (911), so that impurities are adsorbed and collected inside the dust collection bin (911), and the infrared heating tube (925) is started at the same time; S4. The surface of the hull is heated, and then the welding power source (2) is started. At the same time, the switch valve of the gas tank (3) is opened, so that the protective gas CO2 is ejected outward through the gas nozzle (6). At the same time, the driving motor (702) is started, the welding wire (704) is released, and the hull is welded through the welding gun (4). When welding a curved surface, the servo motor (804) is used to drive the welding gun (4) and the gas nozzle (6) to rotate synchronously until the welding gun (4) and the hull surface maintain a suitable relative position.

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