A argon arc welding machine

Abstract

The present invention relates to the technical field of argon arc welding machines, specifically to an argon arc welding machine, comprising a box, an electric control box, and a gas cylinder, wherein the electric control box and the gas cylinder are both mounted on the inner bottom wall of the box; a transverse guide rail, wherein the transverse guide rail is fixedly mounted on the top wall of the box; a longitudinal guide rail, wherein the longitudinal guide rail is movably arranged on the transverse guide rail; and a welding head, wherein the welding head is movably arranged on the longitudinal guide rail, and the exhaust port of the gas cylinder is connected to the welding head. The present invention places the welding head in a closed space, and the airflow in the closed space is stable, so that the airflow column ejected from the welding head during operation will not be subjected to the impact force of the external airflow, thereby preventing the airflow column from being dispersed, and ensuring that the airflow column can isolate the welding point from contact with the external air; and even if the flow rate of the airflow ejected by the welding head is relatively low, a stable airflow column can be formed, and the exhaust volume of the gas cylinder can be reduced at this time.

Description

Technical Field

[0001] The invention relates to the technical field of argon arc welding machines, in particular to an argon arc welding machine. Background Art

[0002] Argon arc welding machine is a machine that uses argon arc welding, which uses high voltage breakdown to start the arc. Argon arc welding, or tungsten inert gas shielded arc welding, refers to a welding method that uses industrial tungsten or active tungsten as a non-melting electrode and inert gas (argon) as protection, referred to as TIG;

[0003] When using the argon arc welding machine, first connect the gas cylinder and the welding head, then open the gas cylinder, so that the argon gas in the gas cylinder is sprayed out from the bottom of the welding head, and the tungsten rod is wrapped with the air column. Then the tungsten rod is moved to the position above the welded part, and the arc is struck by electricity. Under the action of the air column, the air can be prevented from contacting the welded part and causing oxidation of the welded part.

[0004] The existing fully automatic argon arc welding machine only needs to place the two objects to be welded together on the welding table during operation. At this time, the electric guide rail can drive the welding head to the specified position and height, and then open the gas cylinder. The argon gas in the gas cylinder is sprayed from the bottom of the welding head to form an air flow column to protect the welding part, and then the arc is struck for welding;

[0005] In existing factories, factory buildings are usually built with colored steel tiles. Therefore, air conditioning cannot be used for cooling in summer. Only large fans can be used to cool the factory buildings to prevent workers from heatstroke. However, when the large fans are working, the air flow rate in the factory building is relatively high. At this time, the air flow column ejected by the welding gun will be impacted by the air flow. If the external air flow rate is too high, it is necessary to adjust the impact force of the air flow column ejected by the welding gun. The impact force needs to be increased to ensure that the air flow column is not dispersed by the external air flow. When the impact force is increased, the discharge of argon in the gas cylinder will be accelerated, thereby increasing the consumption of argon and causing waste.

[0006] Therefore, a argon arc welding machine is proposed. Summary of the invention

[0007] The object of the present invention is to provide an argon arc welding machine to solve the problem proposed in the above background technology that in the process of using large fans to cool down the factory in summer, the air flow rate in the factory is relatively fast, so it is necessary to adjust the exhaust speed of the welding gun to ensure that the air flow column discharged by the welding gun is not dispersed by the external air flow, and in this process, the exhaust volume of the gas cylinder is large, causing waste.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] An argon arc welding machine comprises a box body, an electric control box, and a gas cylinder, wherein the electric control box and the gas cylinder are both mounted on the inner bottom wall of the box body;

[0010] A transverse guide rail, wherein the transverse guide rail is fixedly mounted on the top wall of the box body;

[0011] A longitudinal guide rail, wherein the longitudinal guide rail is movably arranged on the transverse guide rail;

[0012] A welding head, wherein the welding head is movably arranged on the longitudinal guide rail, and the exhaust port of the gas cylinder is connected to the welding head;

[0013] Also includes:

[0014] An upper cover, the front end of which is open and fixedly mounted on the top wall of the box body;

[0015] A water tank, the water tank is fixedly inserted on the top wall of the upper cover;

[0016] A first cavity, wherein the first cavity is formed on the bottom wall of the water tank, and exhaust ports communicating with the outside are evenly formed on the top wall of the first cavity;

[0017] A U-shaped tube, wherein the U-shaped tube is vertically inserted into the side wall of the water tank, and one end of the U-shaped tube located in the water tank extends into the first cavity;

[0018] A first air pipe, wherein the first air pipe is horizontally fixed and inserted on the side wall of the upper cover, and one end of the first air pipe located outside the upper cover is connected to one end of the U-shaped pipe located outside the water tank;

[0019] The sealing mechanism is arranged on the box body and cooperates with the upper cover.

[0020] Before work, first fill the water tank with a sufficient amount of cold water. When two metal plates need to be welded, first insert the two metal plates into the clamping plates on the top wall of the box in turn, so that the two metal plates can be fixed together; under the action of the sealing mechanism, the space inside the upper cover is in a sealed state, and then the parameters of the electric control box are adjusted. At this time, the transverse guide rail drives the longitudinal guide rail to move to one end of the part that needs to be welded, and then the longitudinal guide rail drives the welding head to move downward. When the welding head moves to a specified height, start the gas cylinder. At this time, adjust the parameters of the electric control box again, and the welding head starts working; because the welding head is in a confined space and the airflow in the confined space is stable, the airflow column ejected from the welding head during work will not be affected by the impact force of the external airflow, thereby preventing the airflow column from being dispersed, which plays a role in ensuring that the airflow column can isolate the welding point from contact with the outside air; and even if the flow rate of the airflow ejected by the welding head is small, a stable airflow column can be formed. At this time, the exhaust volume of the gas cylinder can be reduced, which plays a role in saving gas.

[0021] During the working process, the gas content inside the sealed upper cover gradually increases. At this time, the gas in the sealed space passes through the first air pipe. Since one end of the U-shaped tube is inserted in the water tank, the airflow flowing into the U-shaped tube from the first air pipe will be discharged from the end of the U-shaped tube located in the first cavity. At this time, the gas discharged from the U-shaped tube floats upward in the form of bubbles and then discharged to the outside. Under the action of water in the water tank, one-way discharge is achieved, which prevents the outside air from entering the upper cover and causing unstable airflow in the upper cover; after the gas in the upper cover is discharged, the pressure in the upper cover is in a stable state, which prevents the pressure in the upper cover from being too high, causing the airflow ejected from the welding head to be unable to form an airflow column.

[0022] At the same time, the U-shaped tube extends to the interior of the first cavity. At this time, the gas exhausted from the U-shaped tube first enters the first cavity, and then passes through the multiple exhaust ports on the top wall of the first cavity to enter the water tank. Since the exhaust ports are evenly distributed on the bottom wall of the water tank, the contact area between the bubbles and the water is increased, so that the water in the entire water tank is slowly heated up. Since the surface area of ​​the water tank is large, a large area of ​​medium-temperature water can be naturally cooled, which can prevent the water in a certain part from rapidly heating up and evaporating, thereby playing a role in saving water.

[0023] Preferably, the sealing mechanism comprises a bracket with an opening at the top which is vertically fixedly mounted on the front wall of the box body, a slide groove is provided on the bracket, and a baffle is vertically and movably provided in the slide groove.

[0024] When the metal plate needs to be welded, first push the baffle downwards. At this time, the baffle moves downwards along the slide groove on the bracket, so that the opening at the front end of the upper cover will be exposed, and the staff can now place the metal plate in the designated position; after the metal plate is placed, pull the baffle upwards. When the top of the baffle is at the same level as the top of the upper cover, the baffle completely blocks the opening at the front end of the upper cover, and the upper cover can be in a sealed state.

[0025] Preferably, an insertion rod is vertically fixedly mounted on the top wall of the baffle, and a stopper is movably sleeved on the insertion rod.

[0026] Since the stopper is movably mounted on the plug rod, the stopper can rotate around the plug rod. When the top of the baffle plate and the top of the upper cover are in the same horizontal plane, the stopper is rotated to make the bottom wall of the baffle plate contact with the top wall of the upper cover. Therefore, under the action of gravity, the baffle plate pulls the plug rod downward, and the plug rod presses the stopper downward. However, the baffle plate contacts the top wall of the upper cover, so the baffle plate cannot move downward. Under the action of the plug rod, the baffle plate is also fixed, thereby playing the role of fixing the baffle plate.

[0027] Preferably, a horizontal tube is fixedly installed in the water tank, a plurality of heat conducting tubes connected to the horizontal tube are vertically inserted on the horizontal tube, and the top of the heat conducting tube is located above the water surface, and an air supply mechanism for allowing air in the horizontal tube to flow is provided on the box body.

[0028] During the working process, the gas passing through the water tank will exchange heat with the water under the action of heat exchange when it comes into contact with the water, thereby causing the water temperature to rise. Since the cross pipe is located in the water and part of the heat pipe is also located in the water, the heat in the water will be transferred to the cross pipe and the heat pipe under the action of heat exchange. At this time, under the action of the air supply mechanism, the air flow in the cross pipe flows and passes through the heat pipe and then is discharged. In this process, the air flow with a lower temperature comes into contact with the cross pipe and the heat pipe with a higher temperature. Under the action of heat exchange, the air flow will absorb the heat of the cross pipe and the heat pipe. Therefore, the temperature of the cross pipe and the heat pipe is low. At this time, they can continue to absorb heat in the water, thereby preventing the water in the water tank from evaporating quickly, thereby saving water.

[0029] Preferably, the air supply mechanism includes an installation box vertically fixed on the right side wall of the box body, a piston plate is movably provided in the installation box, an elastic air bag is fixedly installed between the bottom wall of the piston plate and the inner bottom wall of the installation box, a first one-way valve that can only allow air to enter and a second one-way valve that can only allow air to escape are respectively fixedly installed on the bottom wall and side walls of the elastic air bag, a second air pipe connected to a cross pipe is fixedly installed on the second one-way valve, a guide hole connected to the installation box is opened on the side wall of the upper cover, a metal wire is fixedly installed on the top wall of the piston plate, the metal wire passes through the guide hole and is fixedly connected to the longitudinal guide rail.

[0030] When doing preparation work, move the longitudinal guide rail to the leftmost end of the transverse guide rail. At this time, the longitudinal guide rail pulls the metal wire, the metal wire pulls the piston plate, and the piston plate pulls the elastic airbag. Therefore, the elastic airbag inhales air through the first one-way valve, thereby absorbing a large amount of air in the elastic airbag.

[0031] During operation, the longitudinal guide rail moves to the right along the transverse guide rail. Since the stretched elastic airbag has a tendency to recover, the elastic airbag gradually shrinks during this process. Under the action of the second one-way valve, the gas in the elastic airbag passes through the second air pipe into the transverse pipe, thereby providing gas for the transverse pipe.

[0032] Preferably, a mounting rod is horizontally rotatably installed in the water tank, a plurality of stirring blades are vertically fixedly installed on the mounting rod, and a driving mechanism for driving the mounting rod to rotate is provided on the upper cover.

[0033] Under the action of the driving mechanism, the mounting rod drives the stirring blade to rotate. During the rotation, the stirring blade hits the water in the water tank. At this time, the water in the water tank flows slowly. During the flow of water, the contact probability between the water in the water tank and the cross tube and the heat conduction tube is increased, thereby improving the heat dissipation rate and preventing the rapid evaporation of water.

[0034] Preferably, the driving mechanism comprises a mounting block fixedly mounted on the side wall of the upper cover, the mounting block is provided with a circular second cavity, a turntable is rotatably mounted in the second cavity, one end of the mounting rod extends outside the water tank and is fixedly connected to the center of the turntable, a plurality of third cavities are evenly provided on the turntable, and the plurality of third cavities are evenly distributed on the turntable with the center of the turntable as the center, a counterweight block made of metal material is movably arranged in each of the third cavities, a memory alloy wire is fixedly mounted between the side wall of the third cavity close to the center of the turntable and the counterweight block, a heat conducting sheet extending into the second cavity is inserted on the side wall of each of the third cavities close to the air flow channel, an air flow channel is provided on the mounting block, the top end of the air flow channel is connected to the portion of the U-shaped tube located outside the water tank, the bottom end of the air flow channel is connected to one end of the first air pipe located outside the upper cover, a through hole connected to the air flow channel is provided on the side wall of the second cavity, and the through hole and the center of the turntable are in the same horizontal plane.

[0035] In the initial state, the memory alloy wire contracts and drives the counterweight to move to a position close to the center of the turntable; during the welding process, the discharged airflow passes through the airflow channel, so the temperature in the airflow channel is relatively high. Since the airflow channel is connected to the second cavity through the through hole, the temperature in the third cavity close to the through hole on the turntable increases under the action of the heat conductive sheet. Since the counterweight made of metal has good thermal conductivity, the memory alloy wire will be heated. The heated memory alloy wire pushes the counterweight to move to the end of the third cavity away from the center during the stretching process. Therefore, the part close to the through hole on the turntable is heavier, so this part will have a tendency to move downward. Since the turntable is rotatably installed in the second cavity, the turntable will rotate during the downward movement of this part. During the rotation process, under the action of heat exchange, the temperature of the stretched memory alloy wire gradually decreases, so the memory alloy wire contracts and drives the counterweight back to a position close to the center of the turntable, so the turntable will be able to rotate normally, and the mounting rod is fixedly connected to the center of the turntable, so the turntable will drive the mounting rod to rotate during the rotation process, thus playing a role in driving the mounting rod to rotate.

[0036] Preferably, a heat dissipation hole communicating with the second cavity is formed on the bottom wall of the mounting block.

[0037] When the memory alloy wire in the third cavity near the through hole stretches, the turntable starts to rotate. When the turntable drives the third cavity to rotate to the bottom end of the second cavity, the heat conductive sheet is exposed in the heat dissipation hole. At this time, the heat in the third cavity will be quickly dissipated to the outside, so the memory alloy wire can shrink quickly. Therefore, when the memory alloy wire in the third cavity shrinks, it can drive the counterweight block to move to a position close to the center of the turntable, so that only the part of the turntable close to the through hole is heavier, which plays a role in increasing the rotation speed of the turntable.

[0038] Preferably, a fixing rod is fixedly installed at a position in the installation box that is in the same horizontal plane as the guide hole, a guide wheel is sleeved on the fixing rod, and the metal wire passes through the top wall of the guide wheel.

[0039] When the longitudinal guide rail drives the metal wire to move, the metal wire moves along the surface of the guide wheel. At this time, the metal wire can drive the guide wheel to rotate. Therefore, the friction between the metal wire and the guide wheel is rolling friction. Compared with directly making the metal wire slide along the guide hole, the friction force on the metal wire is reduced, thereby extending the service life of the metal wire.

[0040] Preferably, the stretching length of the elastic airbag is greater than the path length of the longitudinal guide rail moving on the transverse guide rail.

[0041] In the initial state, the longitudinal guide rail is located at the rightmost end of the transverse guide rail. At this time, the elastic airbag is contracted and the metal wire is in a taut state. When the longitudinal guide rail moves to the left, the elastic airbag gradually stretches under the action of the metal wire and the piston plate. When the longitudinal guide rail moves to the leftmost end of the transverse guide rail, the elastic airbag still has not reached the maximum stretching limit, thus preventing the elastic airbag from being stretched.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] 1. The welding head is in a closed space, and the airflow in the closed space is stable. Therefore, the airflow column ejected from the welding head during operation will not be affected by the impact of the external airflow, thereby preventing the airflow column from being dispersed, and ensuring that the airflow column can isolate the welding point from the external air; and even if the flow rate of the airflow ejected from the welding head is small, a stable airflow column can be formed, which can reduce the exhaust volume of the gas cylinder.

[0044] 2. The airflow with lower temperature contacts with the transverse tube and heat conducting tube with higher temperature. Under the action of heat exchange, the airflow will absorb the heat of the transverse tube and heat conducting tube. Therefore, the temperature of the transverse tube and heat conducting tube is lower. At this time, they can continuously absorb the heat in the water, thereby preventing the water in the water tank from evaporating quickly.

[0045] 3. When the longitudinal guide rail moves to the left, the elastic airbag gradually stretches under the action of the metal wire and the piston plate. When the longitudinal guide rail moves to the leftmost end of the transverse guide rail, the elastic airbag still has not reached the maximum stretching limit, thus preventing the elastic airbag from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0047] Figure 2 It is an enlarged view of A of the present invention;

[0048] Figure 3 It is a structural schematic diagram of the front side of the present invention;

[0049] Figure 4 It is a schematic diagram of the top view structure of the present invention;

[0050] Figure 5 It is a front cross-sectional view of the present invention;

[0051] Figure 6 It is an enlarged view of B of the present invention;

[0052] Figure 7 is a cross-sectional view of a mounting block of the present invention;

[0053] Figure 8 It is a schematic diagram of the structure of the support of the present invention;

[0054] Fig. 9 It is a schematic diagram of the combined structure of the fixing rod and the guide wheel of the present invention.

[0055] In the figure: 1. box body; 2. electric control box; 3. gas cylinder; 4. horizontal guide rail; 5. longitudinal guide rail; 6. welding head; 7. upper cover; 8. water tank; 9. U-shaped tube; 10. first air pipe; 11. bracket; 12. baffle plate; 13. plug rod; 14. block; 15. horizontal tube; 16. heat pipe; 17. installation box; 18. piston plate; 19. elastic air bag; 20. first one-way valve; 21. second one-way valve; 22. second air pipe; 23. metal wire; 24. mounting rod; 25. stirring blade; 26. mounting block; 27. turntable; 28. counterweight block; 29. ​​memory alloy wire; 30. heat conducting sheet; 31. fixing rod; 32. guide wheel. DETAILED DESCRIPTION

[0056] 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.

[0057] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0058] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] The embodiment of the present invention provides an argon arc welding machine, which solves the technical problem that when the external air flow rate is high, the existing argon arc welding machine needs to adjust the flow rate of argon gas discharged from the welding gun to prevent the air flow column from being dispersed by the external air flow, thereby resulting in a large consumption of argon gas and causing waste.

[0060] The technical solution in the embodiment of the present invention is to solve the above technical problems. The general idea is as follows: an upper cover is arranged on the top wall of the welding table, and the welding table is surrounded by the upper cover. After the metal plate to be welded is placed at a designated position, the opening at the front end of the upper cover is sealed by a baffle, so that the welding head and the metal plate are in a sealed space. Therefore, the flow rate of the gas ejected from the welding head does not need to be too large and a stable air flow column can be formed, thereby preventing the welding part from being oxidized and reducing the consumption of argon gas.

[0061] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0062] See also Figures 1 to 8 The present invention provides a argon arc welding machine, and the technical solution is as follows:

[0063] An argon arc welding machine comprises a box body 1, an electric control box 2, and a gas cylinder 3, wherein the electric control box 2 and the gas cylinder 3 are both installed on the inner bottom wall of the box body 1;

[0064] A transverse guide rail 4, which is fixedly mounted on the top wall of the box body 1;

[0065] A longitudinal guide rail 5, the longitudinal guide rail 5 is movably arranged on the transverse guide rail 4;

[0066] A welding head 6, which is movably arranged on the longitudinal guide rail 5, and the exhaust port of the gas cylinder 3 is connected to the welding head 6;

[0067] Also includes:

[0068] An upper cover 7, the front end of which is open, and the upper cover 7 is fixedly mounted on the top wall of the box body 1;

[0069] A water tank 8, which is fixedly inserted on the top wall of the upper cover 7;

[0070] A first cavity, the first cavity is opened on the bottom wall of the water tank 8, and exhaust ports communicating with the outside are evenly opened on the top wall of the first cavity;

[0071] A U-shaped tube 9, the U-shaped tube 9 is vertically inserted on the side wall of the water tank 8, and one end of the U-shaped tube 9 located in the water tank 8 extends into the first cavity;

[0072] A first air pipe 10, the first air pipe 10 is horizontally fixed and inserted on the side wall of the upper cover 7, and one end of the first air pipe 10 located outside the upper cover 7 is connected to one end of the U-shaped pipe 9 located outside the water tank 8;

[0073] The sealing mechanism is arranged on the box body 1 and cooperates with the upper cover 7 .

[0074] Before work, first fill the water tank 8 with a sufficient amount of cold water. When two metal plates need to be welded, first insert the two metal plates into the card plate on the top wall of the box body 1 in sequence, so that the two metal plates can be fixed together; under the action of the sealing mechanism, the space in the upper cover 7 is in a sealed state, and then the parameters of the electric control box 2 are adjusted. At this time, the transverse guide rail 4 drives the longitudinal guide rail 5 to move to one end of the part that needs to be welded, and then the longitudinal guide rail 5 drives the welding head 6 to move downward. After the welding head 6 moves to the specified height, the gas cylinder 3 is started. At this time, the parameters of the electric control box 2 are adjusted again, and the welding head 6 starts to work; because the welding head 6 is in a confined space and the airflow in the confined space is stable, the airflow column ejected from the welding head 6 during the working process will not be affected by the impact force of the external airflow, thereby preventing the airflow column from being dispersed, and ensuring that the airflow column can isolate the welding point from contact with the external air; and even if the flow rate of the airflow ejected by the welding head 6 is small, a stable airflow column can be formed. At this time, the exhaust volume of the gas cylinder 3 can be reduced, which plays a role in saving gas.

[0075] During the working process, the gas content inside the sealed upper cover 7 gradually increases. At this time, the gas in the sealed space passes through the first air pipe 10. Since one end of the U-shaped tube 9 is inserted in the water tank 8, the airflow flowing into the U-shaped tube 9 from the first air pipe 10 will be discharged from the end of the U-shaped tube 9 located in the first cavity. At this time, the gas discharged from the U-shaped tube 9 floats upward in the form of bubbles and then discharged to the outside. Under the action of water in the water tank 8, one-way discharge is achieved, which prevents the outside air from entering the upper cover 7 and causing the airflow in the upper cover 7 to be unstable; after the gas in the upper cover 7 is discharged, the pressure in the upper cover 7 is in a stable state, which prevents the pressure in the upper cover 7 from being too high, causing the airflow ejected from the welding head 6 to be unable to form an airflow column.

[0076] At the same time, the U-shaped tube 9 extends to the interior of the first cavity. At this time, the gas discharged from the U-shaped tube 9 first enters the first cavity, and then passes through the multiple exhaust ports on the top wall of the first cavity to enter the water tank 8. Since the exhaust ports are evenly distributed on the bottom wall of the water tank 8, the contact area between the bubbles and the water is increased, so that the water in the entire water tank 8 is slowly heated up. Since the surface area of ​​the water tank 8 is large, a large area of ​​medium-temperature water can be naturally cooled, which can prevent the water in a certain part from rapidly heating up and evaporating, thereby playing a role in saving water.

[0077] As an embodiment of the present invention, refer to Figure 1 , Figure 3 The sealing mechanism comprises a bracket 11 with an opening at the top which is vertically fixedly mounted on the front wall of the box body 1. A slide groove is provided on the bracket 11, and a baffle 12 is vertically movably provided in the slide groove.

[0078] When the metal plate needs to be welded, the baffle 12 is first pushed downward. At this time, the baffle 12 moves downward along the slide groove on the bracket 11, so that the opening at the front end of the upper cover 7 will be exposed, and the staff can place the metal plate at the designated position; after the metal plate is placed, the baffle 12 is pulled upward. When the top of the baffle 12 is at the same horizontal plane as the top of the upper cover 7, the baffle 12 completely blocks the opening at the front end of the upper cover 7, and the upper cover 7 can be in a sealed state.

[0079] As an embodiment of the present invention, refer to Figure 2 A plug rod 13 is vertically fixedly installed on the top wall of the baffle 12, and a stopper 14 is movably sleeved on the plug rod 13.

[0080] Since the stopper 14 is movably mounted on the plug rod 13, the stopper 14 can rotate around the plug rod 13. When the top of the baffle 12 and the top of the upper cover 7 are in the same horizontal plane, the stopper 14 is rotated to make the bottom wall of the stopper 14 contact with the top wall of the upper cover 7. Therefore, under the action of gravity, the baffle 12 pulls the plug rod 13 downward, and the plug rod 13 presses the stopper 14 downward. However, the stopper 14 contacts with the top wall of the upper cover 7, so the stopper 14 cannot move downward. Under the action of the plug rod 13, the baffle 12 is also fixed, thereby playing the role of fixing the baffle 12.

[0081] As an embodiment of the present invention, refer to Figure 4 A horizontal pipe 15 is fixedly installed horizontally in the water tank 8, and a plurality of heat conducting pipes 16 connected to the horizontal pipe 15 are vertically inserted on the horizontal pipe 15, and the top of the heat conducting pipe 16 is located above the water surface. An air supply mechanism for making the air in the horizontal pipe 15 flow is provided on the box body 1.

[0082] During operation, the gas passing through the water tank 8 will exchange heat with the water under the action of heat exchange when it comes into contact with the water, thereby causing the water temperature to rise. Since the cross tube 15 is located in the water, and part of the heat pipe 16 is also located in the water, the heat in the water will be transferred to the cross tube 15 and the heat pipe 16 under the action of heat exchange. At this time, under the action of the air supply mechanism, the air flow in the cross tube 15 flows and passes through the heat pipe 16 and then is discharged. In this process, the air flow with a lower temperature comes into contact with the cross tube 15 and the heat pipe 16 with a higher temperature. Under the action of heat exchange, the air flow will absorb the heat of the cross tube 15 and the heat pipe 16. Therefore, the temperature of the cross tube 15 and the heat pipe 16 is relatively low. At this time, the heat in the water can be continuously absorbed, thereby preventing the water in the water tank 8 from evaporating quickly, thereby saving water.

[0083] As an embodiment of the present invention, refer to Figure 5 , Figure 6 The air supply mechanism includes a mounting box 17 vertically fixedly mounted on the right side wall of the box body 1, a piston plate 18 is movably provided in the mounting box 17, an elastic air bag 19 is fixedly mounted between the bottom wall of the piston plate 18 and the inner bottom wall of the mounting box 17, a first one-way valve 20 that can only allow air to enter and a second one-way valve 21 that can only allow air to be exhausted are respectively fixedly mounted on the bottom wall and side wall of the elastic air bag 19, a second air pipe 22 that is connected to the cross pipe 15 is fixedly mounted on the second one-way valve 21, a guide hole that is connected to the mounting box 17 is opened on the side wall of the upper cover 7, a metal wire 23 is fixedly mounted on the top wall of the piston plate 18, the metal wire 23 passes through the guide hole and is fixedly connected to the longitudinal guide rail 5.

[0084] During the preparation work, the longitudinal guide rail 5 is moved to the leftmost end of the transverse guide rail 4. At this time, the longitudinal guide rail 5 pulls the metal wire 23, the metal wire 23 pulls the piston plate 18, and the piston plate 18 pulls the elastic airbag 19. Therefore, the elastic airbag 19 inhales air through the first one-way valve 20, so that a large amount of air is absorbed into the elastic airbag 19.

[0085] During operation, the longitudinal guide rail 5 moves to the right along the transverse guide rail 4. Since the stretched elastic airbag 19 has a tendency to recover, the elastic airbag 19 gradually shrinks during this process. Under the action of the second one-way valve 21, the gas in the elastic airbag 19 passes through the second air pipe 22 and enters the transverse tube 15, thereby providing gas for the transverse tube 15.

[0086] As an embodiment of the present invention, refer to Figure 4 A mounting rod 24 is horizontally rotatably mounted in the water tank 8 , a plurality of stirring blades 25 are vertically fixedly mounted on the mounting rod 24 , and a driving mechanism for driving the mounting rod 24 to rotate is provided on the upper cover 7 .

[0087] Under the action of the driving mechanism, the mounting rod 24 drives the stirring blade 25 to rotate. During the rotation, the stirring blade 25 hits the water in the water tank 8. At this time, the water in the water tank 8 flows slowly. During the flow of water, the contact probability between the water in the water tank 8 and the cross tube 15 and the heat conducting tube 16 is increased, thereby improving the heat dissipation rate and preventing the rapid evaporation of water.

[0088] As an embodiment of the present invention, refer to Figure 7 The driving mechanism includes a mounting block 26 fixedly mounted on the side wall of the upper cover 7, a circular second cavity is formed on the mounting block 26, a turntable 27 is rotatably mounted in the second cavity, one end of the mounting rod 24 extends outside the water tank 8 and is fixedly connected to the center of the turntable 27, a plurality of third cavities are evenly formed on the turntable 27, and the plurality of third cavities are evenly distributed on the turntable 27 with the center of the turntable 27 as the center, a metal counterweight 28 is movably arranged in each third cavity, and the third cavity is close to the turntable 27. A memory alloy wire 29 is fixedly installed between the side wall of the center and the counterweight block 28, a heat conductive sheet 30 extending into the second cavity is inserted on the side wall of each third cavity close to the air flow channel, an air flow channel is opened on the mounting block 26, the top of the air flow channel is connected to the part of the U-shaped tube 9 located outside the water tank 8, the bottom end of the air flow channel is connected to one end of the first air pipe 10 located outside the upper cover 7, a through hole connected to the air flow channel is opened on the side wall of the second cavity, and the through hole and the center of the turntable 27 are in the same horizontal plane.

[0089] In the initial state, the memory alloy wire 29 contracts and drives the counterweight block 28 to move to a position close to the center of the turntable 27; during the welding process, the discharged airflow passes through the airflow channel, so the temperature in the airflow channel is relatively high. Since the airflow channel is connected to the second cavity through the through hole, under the action of the heat conductive sheet 30, the temperature in the third cavity close to the through hole on the turntable 27 rises. Since the counterweight block 28 made of metal has good thermal conductivity, the memory alloy wire 29 will be heated. The heated memory alloy wire 29 pushes the counterweight block 28 to move to the end of the third cavity away from the center of the circle during the stretching process. Therefore, the heat conductive sheet 30 on the turntable 27 close to the through hole increases. The part of the hole is heavier, so this part will have a tendency to move downward. Since the turntable 27 is rotatably installed in the second cavity, the turntable 27 will rotate during the downward movement of this part. During the rotation, under the action of heat exchange, the temperature of the stretched memory alloy wire 29 gradually decreases, so the memory alloy wire 29 contracts and drives the counterweight block 28 back to a position close to the center of the turntable 27. Therefore, the turntable 27 will be able to rotate normally, and the mounting rod 24 is fixedly connected to the center of the turntable 27. Therefore, the turntable 27 will drive the mounting rod 24 to rotate during the rotation, thereby playing a role in driving the mounting rod 24 to rotate.

[0090] As an embodiment of the present invention, refer to Figure 7 A heat dissipation hole communicating with the second cavity is provided on the bottom wall of the mounting block 26 .

[0091] When the memory alloy wire 29 in the third cavity near the through hole stretches, the turntable 27 starts to rotate. When the turntable 27 drives the third cavity to rotate to the bottom end of the second cavity, the heat conductive sheet 30 is exposed in the heat dissipation hole. At this time, the heat in the third cavity will be quickly dissipated to the outside, so the memory alloy wire 29 can shrink quickly. Therefore, when the memory alloy wire 29 in the third cavity shrinks, it can drive the counterweight block 28 to move to a position close to the center of the turntable 27, so that only the part of the turntable 27 close to the through hole is heavier, which plays a role in increasing the rotation speed of the turntable 27.

[0092] As an embodiment of the present invention, refer to Figure 5 , Fig. 9 A fixing rod 31 is fixedly installed at a position in the installation box 17 at the same horizontal plane as the guide hole. A guide wheel 32 is sleeved on the fixing rod 31, and the metal wire 23 passes through the top wall of the guide wheel 32.

[0093] When the longitudinal guide rail 5 drives the metal wire 23 to move, the metal wire 23 moves along the surface of the guide wheel 32. At this time, the metal wire 23 can drive the guide wheel 32 to rotate. Therefore, the friction between the metal wire 23 and the guide wheel 32 is rolling friction. Compared with directly making the metal wire 23 slide along the guide hole, the friction force on the metal wire 23 is reduced, thereby extending the service life of the metal wire 23.

[0094] As an embodiment of the present invention, refer to Figure 5 The stretching length of the elastic airbag 19 is greater than the path length of the longitudinal guide rail 5 moving on the transverse guide rail 4.

[0095] In the initial state, the longitudinal guide rail 5 is located at the rightmost end of the transverse guide rail 4. At this time, the elastic airbag 19 is contracted and the metal wire 23 is in a taut state. When the longitudinal guide rail 5 moves to the left, the elastic airbag 19 gradually stretches under the action of the metal wire 23 and the piston plate 18. When the longitudinal guide rail 5 moves to the leftmost end of the transverse guide rail 4, the elastic airbag 19 has not yet reached the maximum stretching limit, thereby preventing the elastic airbag 19 from being stretched.

[0096] Working principle: before work, first fill the water tank 8 with a sufficient amount of cold water. When two metal plates need to be welded, first insert the two metal plates into the card plate on the top wall of the box body 1 in turn, so that the two metal plates can be fixed together; under the action of the sealing mechanism, the space inside the upper cover 7 is in a sealed state, and then the parameters of the electric control box 2 are adjusted. At this time, the transverse guide rail 4 drives the longitudinal guide rail 5 to move to one end of the part that needs to be welded, and then the longitudinal guide rail 5 drives the welding head 6 to move downward. After the welding head 6 moves to the specified height, the gas cylinder 3 is started. At this time, the parameters of the electric control box 2 are adjusted again, and the welding head 6 starts to work; because the welding head 6 is in a confined space and the airflow in the confined space is stable, the airflow column ejected from the welding head 6 during the working process will not be affected by the impact force of the external airflow, thereby preventing the airflow column from being dispersed, and ensuring that the airflow column can isolate the welding point from contact with the outside air; and even if the flow rate of the airflow ejected by the welding head 6 is small, a stable airflow column can be formed. At this time, the exhaust volume of the gas cylinder 3 can be reduced, which plays a role in saving gas.

[0097] During the working process, the gas content inside the sealed upper cover 7 gradually increases. At this time, the gas in the sealed space passes through the first air pipe 10. Since one end of the U-shaped tube 9 is inserted in the water tank 8, the airflow flowing into the U-shaped tube 9 from the first air pipe 10 will be discharged from the end of the U-shaped tube 9 located in the first cavity. At this time, the gas discharged from the U-shaped tube 9 floats upward in the form of bubbles and then discharged to the outside. Under the action of water in the water tank 8, one-way discharge is achieved, which prevents the outside air from entering the upper cover 7 and causing the airflow in the upper cover 7 to be unstable; after the gas in the upper cover 7 is discharged, the pressure in the upper cover 7 is in a stable state, which prevents the pressure in the upper cover 7 from being too high, causing the airflow ejected from the welding head 6 to be unable to form an airflow column.

[0098] At the same time, the U-shaped tube 9 extends to the interior of the first cavity. At this time, the gas discharged from the U-shaped tube 9 first enters the first cavity, and then passes through the multiple exhaust ports on the top wall of the first cavity to enter the water tank 8. Since the exhaust ports are evenly distributed on the bottom wall of the water tank 8, the contact area between the bubbles and the water is increased, so that the water in the entire water tank 8 is slowly heated up. Since the surface area of ​​the water tank 8 is large, the medium-temperature water in a large area can be naturally cooled, and the water in a certain part can be prevented from rapidly heating up and evaporating, which plays a role in saving water. During the working process, the gas passing through the water tank 8 will exchange heat with the water under the action of heat exchange when contacting with the water, thereby causing the water temperature to rise. Since the cross tube 15 is located in the water, and part of the heat pipe 16 is also located in the water, the heat in the water will be transferred to the cross tube 15 and the heat pipe 16 under the action of heat exchange. On the tube 16, at this time, under the action of the air supply mechanism, the air flow in the cross tube 15 flows and passes through the heat-conducting tube 16 and then is discharged. In this process, the air flow with a lower temperature contacts the cross tube 15 and the heat-conducting tube 16 with a higher temperature. Under the action of heat exchange, the air flow will absorb the heat of the cross tube 15 and the heat-conducting tube 16. Therefore, the temperature of the cross tube 15 and the heat-conducting tube 16 is relatively low. At this time, the heat in the water can be continuously absorbed, thereby preventing the water in the water tank 8 from evaporating quickly, thereby playing a role in saving water; at the same time, under the action of the driving mechanism, the mounting rod 24 drives the stirring blade 25 to rotate. During the rotation, the stirring blade 25 hits the water in the water tank 8. At this time, the water in the water tank 8 flows slowly. During the flow of water, the contact probability of the water in the water tank 8 with the cross tube 15 and the heat-conducting tube 16 is increased, thereby improving the heat dissipation rate and playing a role in preventing the water from evaporating quickly.

[0099] The electrical components appearing in this article are all connected to the external main controller and 220V AC power through a transformer, and the main controller can be a conventional known device that controls a computer, etc. The product model provided by the present invention is only used for the technical solution according to the structural characteristics of the product. The product will be adjusted and modified after purchase to make it more matching and consistent with the technical solution of the present invention. It is a technical solution for the best application of the technical solution. The model of its product can be replaced and modified according to the required technical parameters, which is well known to technical personnel in this field. Therefore, technical personnel in this field can clearly obtain the corresponding use effect through the technical solution provided by the present invention.

[0100] 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. A argon arc welding machine, comprising: A box body (1), an electric control box (2), and a gas cylinder (3), wherein the electric control box (2) and the gas cylinder (3) are both mounted on the inner bottom wall of the box body (1); A transverse guide rail (4), wherein the transverse guide rail (4) is fixedly mounted on the top wall of the box body (1); A longitudinal guide rail (5), wherein the longitudinal guide rail (5) is movably arranged on the transverse guide rail (4); A welding head (6), the welding head (6) being movably arranged on the longitudinal guide rail (5), and the exhaust port of the gas cylinder (3) being connected to the welding head (6); It is characterized by: also including: An upper cover (7), the front end of the upper cover (7) is open, and the upper cover (7) is fixedly mounted on the top wall of the box body (1); A water tank (8), wherein the water tank (8) is fixedly inserted on the top wall of the upper cover (7); A first cavity, wherein the first cavity is formed on the bottom wall of the water tank (8), and exhaust ports communicating with the outside are evenly formed on the top wall of the first cavity; A U-shaped tube (9), wherein the U-shaped tube (9) is vertically inserted into the side wall of the water tank (8), and one end of the U-shaped tube (9) located in the water tank (8) extends into the first cavity; A first air pipe (10), the first air pipe (10) being fixedly inserted horizontally on the side wall of the upper cover (7), and one end of the first air pipe (10) located outside the upper cover (7) being connected to one end of the U-shaped pipe (9) located outside the water tank (8); A sealing mechanism, the sealing mechanism being arranged on the box body (1) and cooperating with the upper cover (7); The sealing mechanism comprises a bracket (11) with an opening at the top and vertically fixedly mounted on the front wall of the box body (1); a slide groove is provided on the bracket (11); a baffle (12) is vertically movably arranged in the slide groove; A plug rod (13) is vertically fixedly mounted on the top wall of the baffle (12), and a stopper (14) is movably sleeved on the plug rod (13); A horizontal tube (15) is fixedly installed in the water tank (8) horizontally, a plurality of heat-conducting tubes (16) connected to the horizontal tube (15) are vertically inserted on the horizontal tube (15), and the top ends of the heat-conducting tubes (16) are located above the water surface, and an air supply mechanism for allowing air in the horizontal tube (15) to flow is provided on the box body (1); The air supply mechanism comprises an installation box (17) vertically fixedly installed on the right side wall of the box body (1), a piston plate (18) is movably arranged in the installation box (17), an elastic air bag (19) is fixedly installed between the bottom wall of the piston plate (18) and the inner bottom wall of the installation box (17), a first one-way valve (20) that can only allow air to enter and a second one-way valve (21) that can only allow air to enter are fixedly installed on the bottom wall and side wall of the elastic air bag (19), a second air pipe (22) that is connected to the transverse pipe (15) is fixedly installed on the second one-way valve (21), a guide hole that is connected to the installation box (17) is opened on the side wall of the upper cover (7), a metal wire (23) is fixedly installed on the top wall of the piston plate (18), and the metal wire (23) passes through the guide hole and is fixedly connected to the longitudinal guide rail (5).

2. The argon arc welding machine according to claim 1, characterized in that: A mounting rod (24) is horizontally rotatably mounted in the water tank (8), a plurality of stirring blades (25) are vertically fixedly mounted on the mounting rod (24), and a driving mechanism for driving the mounting rod (24) to rotate is provided on the upper cover (7).

3. The argon arc welding machine according to claim 2, characterized in that: The driving mechanism comprises a mounting block (26) fixedly mounted on the side wall of the upper cover (7), the mounting block (26) being provided with a circular second cavity, a turntable (27) being rotatably mounted in the second cavity, one end of the mounting rod (24) extending outside the water tank (8) and being fixedly connected to the center of the turntable (27), a plurality of third cavities being evenly arranged on the turntable (27), the plurality of third cavities being evenly distributed on the turntable (27) with the center of the turntable (27) as the center, each of the third cavities being movably provided with a counterweight block (28) made of a metal material, and the third cavities being close to the turntable. A memory alloy wire (29) is fixedly installed between the side wall of the center of the circle (27) and the counterweight block (28); a heat conductive plate (30) extending into the second cavity is inserted on the side wall of each of the third cavities close to the air flow channel; an air flow channel is opened on the mounting block (26); the top end of the air flow channel is connected to the portion of the U-shaped tube (9) located outside the water tank (8); the bottom end of the air flow channel is connected to one end of the first air pipe (10) located outside the upper cover (7); a through hole connected to the air flow channel is opened on the side wall of the second cavity, and the through hole and the center of the circle of the turntable (27) are in the same horizontal plane.

4. The argon arc welding machine according to claim 3, characterized in that: A heat dissipation hole communicating with the second cavity is provided on the bottom wall of the mounting block (26).

5. The argon arc welding machine according to claim 1, characterized in that: A fixing rod (31) is fixedly installed in the installation box (17) at a position on the same horizontal plane as the guide hole, a guide wheel (32) is sleeved on the fixing rod (31), and the metal wire (23) passes through the top wall of the guide wheel (32).

6. The argon arc welding machine according to claim 1, characterized in that: The stretching length of the elastic airbag (19) is greater than the path length of the longitudinal guide rail (5) moving on the transverse guide rail (4).

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