A double-gun argon arc welding machine

Abstract

The present invention relates to the technical field of arc welders, and particularly relates to a double-gun argon arc welder, which includes a frame body. At the top end of the inner surface of the frame body, a welding mechanism is provided. At the bottom end of the inner surface of the frame body, a bottom plate is fixedly connected. At the center position of the upper outer surface of the bottom plate, a fixing seat is fixedly connected. The inside of the fixing seat is of a hollow structure. At the upper outer surface of the fixing seat, a chute is opened. Inside the chute, a slider is slidably connected. On the right outer surface of the fixing seat, a motor is fixedly connected. On the inner wall of the fixing seat away from the motor, a bearing groove is opened. Inside the bearing groove, a bearing is fixedly connected. The inner wall of the bearing is rotationally connected to the outer surface of a bidirectional reciprocating lead screw. This device can facilitate the user to fix circular pipes and interfaces with different diameters for welding, reduce the operation difficulty of welding, improve the welding effect of the interfaces, thereby improving the use efficiency of the device, and further improving the production rate in the factory.

Description

Technical Field

[0001] The present invention relates to the technical field of arc welders, and more particularly to a double-gun argon arc welder. Background Art

[0002] An arc welder, also known as an arc welding transformer, is a special transformer that converts the alternating current of the network voltage into a low-voltage alternating current suitable for arc welding, and is composed of a main transformer, the required regulating part, an indicating device, etc.

[0003] The existing patent (Publication No.: CN211727850U) is a two-way argon arc welder, including a frame, a conveying table, a jig, a jig positioning mechanism, a welding torch lifting mechanism, a welding torch horizontal turning mechanism, a welding torch vertical turning mechanism, a connecting plate, a cleaning mechanism and a welding torch. The welding torch lifting mechanism and the cleaning mechanism are fixed on the frame. The lifting end of the welding torch lifting mechanism is fixed with the welding torch horizontal turning mechanism. The output shaft of the welding torch horizontal turning mechanism is fixed on the connecting plate. The two ends of the connecting plate are respectively fixed with the welding torch vertical turning mechanism. The output shaft of the welding torch vertical turning mechanism is fixed with the welding torch. The conveying table is located below the welding torch. The jig positioning mechanism is fixed at the bottom of the conveying table, and the jig is placed on the conveying table. Among them, the welding torch lifting mechanism, the welding torch horizontal turning mechanism, the welding torch vertical turning mechanism and the welding torch are the structures adopted in this case.

[0004] In the process of implementing the present invention, it is found that at least the following problems in the prior art have not been solved: in the above device, when welding an upper interface on the upper end of a circular pipe, it is often inconvenient for the user to fix the interface and the circular pipe, resulting in a large gap between the circular pipe and the interface, affecting the welding effect. At the same time, when the welding torch adjusts the welding point, it is very easy to cause the separation of the interface and the circular pipe, thereby increasing the operation difficulty of the user and reducing the production rate in the factory.

[0005] Therefore, a double-gun argon arc welder is proposed. Summary of the Invention

[0006] The purpose of the present invention is to provide a double-gun argon arc welder. The technical problem to be solved by the present invention is that when welding an upper interface on the upper end of a circular pipe, it is often inconvenient for the user to fix the interface and the circular pipe, resulting in a large gap between the circular pipe and the interface, affecting the welding effect. At the same time, when the welding torch adjusts the welding point, it is very easy to cause the separation of the interface and the circular pipe, thereby increasing the operation difficulty of the user and reducing the production rate in the factory.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] A double-gun argon arc welding machine comprises a frame, a welding mechanism is arranged on the top of the inner surface of the frame, a bottom plate is fixedly connected to the bottom end of the inner surface of the frame, a fixing seat is fixedly connected to the center position of the upper outer surface of the bottom plate, the interior of the fixing seat is arranged as a hollow structure, a slide groove is arranged on the upper outer surface of the fixing seat, a slider is slidably connected to the interior of the slide groove, a motor is fixedly connected to the right outer surface of the fixing seat, a bearing groove is arranged on the inner wall of the fixing seat away from the motor, a bearing is fixedly connected to the inner wall of the bearing groove, and the inner wall of the bearing is rotatably connected to the outer surface of a bidirectional reciprocating screw rod. The other end of the bidirectional reciprocating screw is fixedly connected to the output shaft of the motor, and a primary bevel gear is fixedly connected to the center of the bidirectional reciprocating screw, and a secondary bevel gear is meshed with one side of the primary bevel gear. A rectangular groove is provided at the lower end of the fixed seat and below the secondary bevel gear, and a threaded rod is connected to the internal thread of the secondary bevel gear. The outer surface of the threaded rod is threadedly connected to the inner wall of the fixed seat, and the other end of the threaded rod penetrates the inner wall of the fixed seat and is fixedly connected to a fixing column at the center position of the outer surface of the upper end of the fixed seat, and telescopic mechanisms are symmetrically arranged below the fixing column and on both sides of the threaded rod.

[0009] By adopting the above technical solution, the device can facilitate users to fix circular pipes of different diameters and interfaces for welding, reduce the difficulty of welding operation, improve the welding effect of the interface, thereby improving the use efficiency of the device and further increasing the production rate in the factory.

[0010] Preferably, the outer surfaces on both sides of the bidirectional reciprocating screw are threadedly connected with threaded seats, a push plate is fixedly connected to the upper side of the threaded seat close to the primary bevel gear, a spring is fixedly connected to the side of the push plate away from the primary bevel gear, the other end of the spring is fixedly connected to the slider, and a push rod is fixedly connected to the side of the push plate away from the spring.

[0011] By adopting the above technical solution, when the slider fixes the outer wall of the circular tube and the arc plate does not rest against the inner wall of the interface, the threaded seat continues to drive the push plate tension spring to move forward until the arc plate rests against the inner wall of the interface, which makes it convenient for users to fix circular tubes and interfaces of different diameters and perform welding.

[0012] Preferably, the telescopic mechanism includes a telescopic rod, a sleeve and a sealing ring, the lower end of the telescopic rod is fixedly connected to the upper end of the fixed seat, the outer wall of the telescopic rod is slidably connected to the sleeve, the upper end of the telescopic rod is fixedly connected to the sealing ring, the outer wall of the sealing ring is slidably connected to the inner wall of the sleeve, and the upper end of the sleeve is fixedly connected to the lower end of the fixed seat.

[0013] By adopting the above technical solution, by setting the telescopic mechanism, when it is convenient to sleeved the circular pipe outside the fixed column, the fixed column can be lowered and then the circular pipe can be sleeved outside the fixed column, which is convenient for installation. When the threaded rod drives the fixed column to move up and down, the inner wall of the sleeve will slide along the outer wall of the telescopic rod. By setting the sealing ring, the sealing performance inside the telescopic mechanism is enhanced.

[0014] Preferably, the chute and the slider are in a T-shaped structure and match each other.

[0015] By adopting the above technical solution, it can prevent the slider from falling off the threaded seat when sliding along the upper end of the threaded seat.

[0016] Preferably, an air delivery cavity is opened on one side of the inner surface of the chute close to the first-stage bevel gear. The air delivery cavity is in a C-shaped structure and penetrates through the telescopic mechanism and extends to the outer surface of the fixed column.

[0017] By adopting the above technical solution, when the user needs to weld the interface on the circular pipe, first sleeve the circular pipe outside the fixed column, then place the interface at the position where the circular pipe needs to be welded. Further, the user starts the motor, the output shaft of the motor drives the bidirectional reciprocating screw rod to rotate and drive the threaded seat to move, the threaded seat drives the slider to clamp the pipe. At this time, the push plate on the threaded seat drives the push rod to move into the air delivery cavity, thereby squeezing the gas in the air delivery cavity.

[0018] Preferably, a push rod is movably connected inside the air delivery cavity and inside the fixed seat. An actuating rod is movably connected inside the air delivery cavity. An arc-shaped plate is fixedly connected to the outside of the actuating rod and located outside the fixed seat.

[0019] By adopting the above technical solution, when the slider clamps the outer wall of the circular pipe fitting, the inner end of the push rod will not move to the inner end position of the air delivery cavity; when the slider clamps the circular pipe fitting, under the cooperation of the bidirectional reciprocating screw rod, the actuating rod in the air delivery cavity is forced to move to the outside of the fixed column, and then drives the arc-shaped plate to abut against the inside of the interface to achieve the fixing effect.

[0020] Preferably, air plugs are fixedly connected to the outer surfaces of the push rod and the actuating rod and located inside the air delivery cavity.

[0021] By adopting the above technical solution, by setting air plugs on the outer surfaces of the push rod and the actuating rod, the airtightness inside the air delivery cavity can be improved, and further the fixing effect of the pipe and the interface can be improved.

[0022] Preferably, the side of the slider close to the fixed seat is set as an arc-shaped structure. Ceramic fiber cloths are provided on the outer surfaces of the slider and the arc-shaped plate.

[0023] By adopting the above technical solution, by setting one side of the slider as an arc structure, the contact area between the slider and the circular pipe can be increased, making the clamping more stable. By setting ceramic fiber cloth on the slider and the arc plate, the hard contact between the slider and the arc plate on the pipe and the interface can be reduced.

[0024] Preferably, the amount of gas extruded during the movement of the push rod is greater than the amount of gas required to compensate for the internal negative pressure during the upward movement of the sleeve.

[0025] By adopting the above technical solution, since the amount of gas extruded during the movement of the push rod is greater than the amount of gas required to compensate for the internal negative pressure when the sleeve moves upward, it can prevent the area inside the sleeve above the sealing ring of the telescopic rod from increasing to form a negative pressure during the upward movement of the threaded rod driving the fixed column. At this time, the threaded seat moves inward to drive the push rod to move inward, which will extrude the gas in the air delivery cavity. The gas moves upward to compensate for the gas in the sleeve, resulting in the movable rod being unable to move outward from the fixed column. Therefore, it can be ensured that the amount of gas extruded during the movement of the push rod can drive the arc plate to move outward until it fixes the inner wall of the circular pipe in addition to compensating for the gas inside the sleeve.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] 1. In the present invention, by adding a series of structural components such as a fixed seat, a slider, an air delivery cavity, and a movable rod to the device, when the user needs to weld an interface on a circular pipe, first, the circular pipe is sleeved outside the fixed column, and then the interface is placed at the position where the circular pipe needs to be welded. Further, the user starts the motor. The output shaft of the motor drives the bidirectional reciprocating screw rod to rotate. The bidirectional reciprocating screw rod drives the threaded seat to move, so that the slider slides along the inner wall of the chute to clamp and fix the circular pipe. At the same time, the first-stage bevel gear drives the second-stage bevel gear to rotate. The second-stage bevel gear drives the threaded rod to move upward. The threaded rod drives the fixed column to move upward. At this time, the push plate on the threaded seat drives the push rod to move into the air delivery cavity, thereby extruding the gas in the air delivery cavity. The gas in the air delivery cavity pushes the movable rod to move outward from the fixed column, and then drives the arc plate to reach the inside of the interface to achieve the fixing effect. By setting ceramic fiber cloth on the slider and the arc plate, the hard contact between the slider and the arc plate on the pipe and the interface can be reduced. At this time, the welding mechanism on the frame starts to weld the pipe and the interface, reducing the probability that the welding torch on the welding mechanism accidentally touches the interface during adjustment, resulting in the deviation of the interface position, thereby reducing the operation difficulty of welding, improving the use efficiency of the device, and further increasing the production rate in the factory.

[0028] 2. In the present invention, by setting the amount of gas extruded during the movement of the push rod to be greater than the amount of gas required to compensate for the internal negative pressure when the sleeve moves upward, it is possible to prevent the formation of negative pressure due to the increase in the internal area of the sleeve above the sealing ring of the telescopic rod during the upward movement of the threaded rod driving the fixed column. At this time, the threaded seat moves inward to drive the push rod to move inward, which will extrude the gas in the gas transmission cavity. The upward movement of the gas will compensate for the gas in the sleeve, resulting in the inability of the movable rod to move outward from the fixed column. Therefore, it can be ensured that the amount of gas extruded during the movement of the push rod can drive the arc-shaped plate to move outward until it fixes the inner wall of the circular pipe fitting in addition to compensating for the internal gas of the sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 is a schematic structural diagram of the present invention;

[0031] Figure 2 is a combined schematic diagram of the fixing seat and the fixed column of the present invention;

[0032] Figure 3 is a sectional structural schematic diagram of the fixing seat and the fixed column of the present invention.

[0033] Description of the reference numerals:

[0034] 1. Frame body; 2. Welding mechanism; 3. Base plate; 4. Fixing seat; 5. Chute; 6. Rectangular groove; 7. Bi-directional reciprocating screw rod; 8. Threaded seat; 9. Slide block; 10. Spring; 11. Push plate; 12. Push rod; 13. Gas transmission cavity; 14. Bearing groove; 15. Bearing; 16. First-stage bevel gear; 17. Second-stage bevel gear; 18. Motor; 19. Telescopic mechanism; 191. Telescopic rod; 192. Sleeve; 193. Sealing ring; 20. Threaded rod; 21. Fixed column; 22. Movable rod; 23. Arc-shaped plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The following will clearly and completely describe the technical solutions of the present invention in combination with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0036] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined. In addition, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. 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.

[0038] Please refer to Figures 1 to 3 , the present invention provides a technical solution:

[0039] such as Figures 1 to 3As shown, a double-gun argon arc welding machine includes a frame 1, a welding mechanism 2 is arranged on the top of the inner surface of the frame 1, a bottom plate 3 is fixedly connected to the bottom end of the inner surface of the frame 1, a fixing seat 4 is fixedly connected to the center position of the upper outer surface of the bottom plate 3, the interior of the fixing seat 4 is arranged as a hollow structure, a slide groove 5 is provided on the upper outer surface of the fixing seat 4, a slider 9 is slidably connected to the inside of the slide groove 5, a motor 18 is fixedly connected to the right outer surface of the fixing seat 4, a bearing groove 14 is provided on the inner wall of the side of the fixing seat 4 away from the motor 18, a bearing 15 is fixedly connected to the inner wall of the bearing groove 14, and the inner wall of the bearing 15 is rotatably connected to the outer surface of the bidirectional reciprocating screw rod 7, and the bidirectional reciprocating screw rod 7 is rotatably connected to the inner wall of the bearing groove 14. The other end of the multi-thread rod 7 is fixedly connected to the output shaft of the motor 18, and a primary bevel gear 16 is fixedly connected to the center of the bidirectional reciprocating thread rod 7, and a secondary bevel gear 17 is meshed on one side of the primary bevel gear 16. A rectangular groove 6 is provided at the lower end of the fixed seat and below the secondary bevel gear 17. A threaded rod 20 is connected to the internal thread of the secondary bevel gear 17, and the outer surface of the threaded rod 20 is threadedly connected to the inner wall of the fixed seat 4. The other end of the threaded rod 20 passes through the inner wall of the fixed seat 4 and is fixedly connected to a fixed column 21 at the center of the upper outer surface of the fixed seat 4. A telescopic mechanism 19 is symmetrically arranged below the fixed column 21 and on both sides of the threaded rod 20.

[0040] By adopting the above technical solution, the device can facilitate users to fix circular pipes of different diameters and interfaces for welding, reduce the difficulty of welding operation, improve the welding effect of the interface, thereby improving the use efficiency of the device and further increasing the production rate in the factory.

[0041] As an embodiment of the present invention, the outer surfaces of both sides of the bidirectional reciprocating screw 7 are threadedly connected with a threaded seat 8, the upper side of the threaded seat 8 close to the first-stage bevel gear 16 is fixedly connected with a push plate 11, the side of the push plate 11 away from the first-stage bevel gear 16 is fixedly connected with a spring 10, the other end of the spring 10 is fixedly connected to the slider 9, and the side of the push plate 11 away from the spring 10 is fixedly connected with a push rod 12.

[0042] By adopting the above technical solution, when the slider 9 fixes the outer wall of the circular tube and the arc plate 23 does not abut against the inner wall of the interface, the threaded seat 8 continues to drive the push plate 11 to stretch the spring 10 forward until the arc plate 23 abuts against the inner wall of the interface, which is convenient for users to fix circular tubes and interfaces of different diameters and perform welding.

[0043] As an embodiment of the present invention, the telescopic mechanism 19 includes a telescopic rod 191, a sleeve 192 and a sealing ring 193. The lower end of the telescopic rod 191 is fixedly connected to the upper end of the fixed seat 4. The outer wall of the telescopic rod 191 is slidably connected to the sleeve 192. The upper end of the telescopic rod 191 is fixedly connected to the sealing ring 193. The outer wall of the sealing ring 193 is slidably connected to the inner wall of the sleeve 192. The lower end of the sleeve 192 is fixedly connected to the upper end of the fixed seat 4.

[0044] By adopting the above technical solution, by providing the telescopic mechanism 19, when the circular pipe is sleeved outside the fixed column 21, the fixed column 21 can be lowered and then the circular pipe can be sleeved outside the fixed column 21, which is convenient for installation. When the threaded rod 20 drives the fixed column 21 to move up and down, the inner wall of the sleeve 192 will slide along the outer wall of the telescopic rod 191. By providing the sealing ring 193, the sealing performance inside the telescopic mechanism 19 is enhanced.

[0045] As an embodiment of the present invention, the chute 5 and the slider 9 are in a T-shaped structure and fit with each other.

[0046] By adopting the above technical solution, it can prevent the slider 9 from falling off the threaded seat 8 when sliding along the upper end of the threaded seat 8.

[0047] As an embodiment of the present invention, an air delivery cavity 13 is provided on the inner surface of the chute 5 near the first-stage bevel gear 16. The air delivery cavity 13 is in a C-shaped structure and penetrates through the telescopic mechanism 19 and extends to the outer surface of the fixed column 21.

[0048] By adopting the above technical solution, when the user needs to weld the interface on the circular pipe, first the circular pipe is sleeved outside the fixed column 21, and then the interface is placed at the position where the circular pipe needs to be welded. Further, the user starts the motor 18, and the output shaft of the motor 18 drives the bidirectional reciprocating screw rod 7 to rotate and drive the threaded seat 8 to move. The threaded seat 8 drives the slider 9 to clamp the pipe. At this time, the push plate 11 on the threaded seat 8 drives the push rod 12 to move into the air delivery cavity 13, thereby squeezing the gas in the air delivery cavity 13.

[0049] As an embodiment of the present invention, a push rod 12 is movably connected inside the air delivery cavity 13 and inside the fixed seat 4. An activity rod 22 is movably connected inside the air delivery cavity 13. The activity rod 22 is fixedly connected to an arc-shaped plate 23 outside the fixed seat 4.

[0050] By adopting the above technical solution, when the slider 9 clamps the outer wall of the circular pipe fitting, the inner end of the push rod 12 will not move to the position of the inner end of the air delivery cavity 13; after the slider 9 clamps the circular pipe fitting, under the cooperation of the bidirectional reciprocating lead screw 7, the push rod 12 in the air delivery cavity 13 is forced to extrude the gas to move the movable rod 22 outward from the fixed column 21, and then drive the arc-shaped plate 23 to reach the inside of the interface, so as to achieve the fixing effect.

[0051] As an embodiment of the present invention, air plugs are fixedly connected to the outer surface of the push rod 12 and the outer surface of the movable rod 22 and located inside the air delivery cavity 13.

[0052] By adopting the above technical solution, by arranging air plugs on the outer surfaces of the push rod 12 and the movable rod 22, the air tightness inside the air delivery cavity 13 can be improved, and further the fixing effect of the pipe and the interface can be improved.

[0053] As an embodiment of the present invention, the side of the slider 9 close to the fixed seat 4 is provided with an arc-shaped structure, and ceramic fiber cloths are arranged on the outer surface of the slider 9 and the outer surface of the arc-shaped plate 23.

[0054] By adopting the above technical solution, by arranging one side of the slider 9 in an arc-shaped structure, the contact area between the slider 9 and the circular pipe can be increased, making the clamping more stable. By arranging ceramic fiber cloths on the slider 9 and the arc-shaped plate 23, the hard contact between the slider 9 and the arc-shaped plate 23 on the pipe and the interface can be reduced.

[0055] As an embodiment of the present invention, the amount of gas extruded during the movement of the push rod 12 is greater than the amount of gas required to compensate for the internal negative pressure during the upward movement of the sleeve 192.

[0056] By adopting the above technical solution, since the amount of gas extruded during the movement of the push rod 12 is greater than the amount of gas required to compensate for the internal negative pressure when the sleeve 192 moves upward, it can prevent the area inside the sleeve 192 above the sealing ring 193 of the telescopic rod 191 from increasing to form a negative pressure during the upward movement of the threaded rod 20 driving the fixed column 21. At this time, when the threaded seat 8 moves inward to drive the push rod 12 to move inward, the gas in the air delivery cavity 13 will be extruded, and the upward movement of the gas will compensate for the gas in the sleeve 192, resulting in the movable rod 22 being unable to move outward from the fixed column 21. Thus, it can be ensured that the amount of gas extruded during the movement of the push rod 12 can drive the arc-shaped plate 23 to move outward until it fixes the inner wall of the circular pipe fitting in addition to compensating for the gas inside the sleeve 192.

[0057] Working principle: By adding a series of structural components such as a fixed seat 4, a slider 9, an air delivery cavity 13, and a movable rod 22 in this device, when the user needs to weld an interface onto a circular pipe, first, the circular pipe is sleeved outside the fixed column 21, and then the interface is placed at the position on the circular pipe where welding is required. Further, the user starts the motor 18, and the output shaft of the motor 18 drives the bidirectional reciprocating screw rod 7 to rotate. The bidirectional reciprocating screw rod 7 drives the two sets of threaded seats 8 to move towards each other, causing the slider 9 to slide along the inner wall of the chute 5 to clamp and fix the circular pipe. At the same time, the first-stage bevel gear 16 drives the second-stage bevel gear 17 to rotate, and the second-stage bevel gear 17 drives the threaded rod 20 to move upward. The threaded rod 20 drives the fixed column 21 to move upward. At this time, the push plate 11 on the threaded seat 8 drives the push rod 12 to move into the air delivery cavity 13, thereby squeezing the gas in the air delivery cavity 13. Since the amount of gas squeezed by the push rod 12 during movement is greater than the amount of gas required to compensate for the internal negative pressure when the sleeve 192 moves upward, the gas in the air delivery cavity 13 can be made to push the movable rod 22 to move outward from the fixed column 21, and then drive the arc-shaped plate 23 to abut against the inside of the interface to achieve a fixing effect. By providing ceramic fiber cloth on the slider 9 and the arc-shaped plate 23, the hard contact between the slider 9 and the arc-shaped plate 23 on the pipe and the interface can be reduced. At this time, the welding mechanism 2 on the frame 1 is activated to weld the pipe and the interface, reducing the probability that the welding torch on the welding mechanism 2 accidentally touches the interface during adjustment, resulting in the displacement of the interface position, thereby reducing the operation difficulty of welding, improving the use efficiency of the device, and further increasing the production rate in the factory.

[0058] The usage processes of the components of the welding mechanism 2 adopted in the present invention are all based on the background information provided by the present invention, and in cooperation with the description in the specification of the present invention, those skilled in the art can obtain their usage processes and corresponding usage effects, so they are not disclosed one by one.

[0059] The electrical components appearing in this text are all electrically connected to the external main controller and 220V mains through a transformer, and the main controller can be a conventional known device such as a computer for control. The product models provided by the present invention are only used according to the structural characteristics of the technical solution. The products will be adjusted and modified after purchase to make them more compatible and conform to the technical solution of the present invention. It is an optimal application technical solution of this technical solution. The product models can be replaced and modified according to the required technical parameters, which are well-known to those skilled in the art. Therefore, those skilled in the art can clearly obtain the corresponding usage effects through the technical solution provided by the present invention.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A double-gun argon arc welding machine, characterized in that: It includes a housing (1). At the top of the inner surface of the housing (1), a welding mechanism (2) is provided. At the bottom of the inner surface of the housing (1), a bottom plate (3) is fixedly connected. At the center of the upper outer surface of the bottom plate (3), a fixed seat (4) is fixedly connected. The inside of the fixed seat (4) is of a hollow structure. On the upper outer surface of the fixed seat (4), a chute (5) is provided. Inside the chute (5), a slider (9) is slidably connected. On the right outer surface of the fixed seat (4), a motor (18) is fixedly connected. On the inner wall of the fixed seat (4) on the side away from the motor (18), a bearing groove (14) is provided. On the inner wall of the bearing groove (14), a bearing (15) is fixedly connected. The inner wall of the bearing (15) is rotationally connected to the outer surface of a bidirectional reciprocating screw rod (7). The other end of the bidirectional reciprocating screw rod (7) is fixedly connected to the output shaft of the motor (18). At the center of the bidirectional reciprocating screw rod (7), a first-stage bevel gear (16) is fixedly connected. On one side of the first-stage bevel gear (16), a second-stage bevel gear (17) is meshed. At the lower end of the fixed seat and at a position below the second-stage bevel gear (17), a rectangular groove (6) is provided. The second-stage bevel gear (17) is internally threaded with a threaded rod (20). The outer surface of the threaded rod (20) is threadedly connected to the inner wall of the fixed seat (4). The other end of the threaded rod (20) penetrates the inner wall of the fixed seat (4) and is fixedly connected to a fixed column (21) at the center of the upper outer surface of the fixed seat (4). Below the fixed column (21) and on both sides of the threaded rod (20), telescopic mechanisms (19) are symmetrically arranged; On the outer surfaces on both sides of the bidirectional reciprocating screw rod (7), a threaded seat (8) is threadedly connected. Above the threaded seat (8) and on one side close to the first-stage bevel gear (16), a push plate (11) is fixedly connected. On the side of the push plate (11) away from the first-stage bevel gear (16), a spring (10) is fixedly connected. The other end of the spring (10) is fixedly connected to the slider (9). On the side of the push plate (11) away from the spring (10), a push rod (12) is fixedly connected; The telescopic mechanism (19) includes a telescopic rod (191), a sleeve (192), and a sealing ring (193). The lower end of the telescopic rod (191) is fixedly connected to the upper end of the fixed seat (4). The outer wall of the telescopic rod (191) is slidably connected to the sleeve (192). The upper end of the telescopic rod (191) is fixedly connected to the sealing ring (193). The outer wall of the sealing ring (193) is slidably connected to the inner wall of the sleeve (192). The lower end of the sleeve (192) is fixedly connected to the upper end of the fixed seat (4); On the inner surface of the chute (5) and on one side close to the first-stage bevel gear (16), an air delivery cavity (13) is provided. The air delivery cavity (13) is of a C-shaped structure and penetrates the telescopic mechanism (19) and extends to the outer surface of the fixed column (21); Inside the air delivery cavity (13) and inside the fixed seat (4), a push rod (12) is movably connected. Inside the air delivery cavity (13) and inside the movable column, a movable rod (22) is movably connected. The movable rod (22) is fixedly connected to an arc-shaped plate (23) outside the fixed seat (4). When the user needs to weld the interface onto the circular pipe, first, the circular pipe is sleeved outside the fixed column (21), and then the interface is placed at the position on the circular pipe where welding is required. Further, the user starts the motor (18). The output shaft of the motor (18) drives the bi-directional reciprocating lead screw (7) to rotate. The bi-directional reciprocating lead screw (7) drives the two sets of threaded seats (8) to move towards each other, causing the slider (9) to slide along the inner wall of the chute (5) to clamp and fix the circular pipe. At the same time, the first-stage bevel gear (16) drives the second-stage bevel gear (17) to rotate. The second-stage bevel gear (17) drives the threaded rod (20) to move upward. The threaded rod (20) drives the fixed column (21) to move upward. At this time, the push plate (11) on the threaded seat (8) drives the push rod (12) to move into the air delivery cavity (13), thereby squeezing the gas in the air delivery cavity (13). Since the amount of gas squeezed during the movement of the push rod (12) is greater than the amount of gas required to compensate for the internal negative pressure when the sleeve (192) moves upward, the gas in the air delivery cavity (13) can be made to push the movable rod (22) to move outside the fixed column (21), and then drive the arc-shaped plate (23) to reach inside the interface to achieve a fixing effect. By providing ceramic fiber cloth on the slider (9) and the arc-shaped plate (23), the hard contact between the slider (9) and the arc-shaped plate (23) on the pipe and the interface can be reduced. At this time, the welding mechanism (2) on the frame (1) is started to weld the pipe and the interface.

2. A double-gun argon arc welding machine according to claim 1, characterized in that: The chute (5) and the slider (9) are in a T-shaped structure and match each other.

3. A double-gun argon arc welding machine according to claim 1, characterized in that: On the outer surfaces of the push rod (12) and the movable rod (22) and inside the air delivery cavity (13), air plugs are fixedly connected.

4. A double-gun argon arc welding machine according to claim 1, characterized in that: One side of the slider (9) close to the fixed seat (4) is provided with an arc-shaped structure. Ceramic fiber cloth is provided on the outer surfaces of the slider (9) and the arc-shaped plate (23).

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