A argon arc welding machine for welding metal products

Abstract

The present invention relates to the technical field of argon arc welding, and discloses an argon arc welding machine for welding metal products, comprising an argon arc welding machine body, a handle fixedly connected to the top surface of the argon arc welding machine body, a foot pad fixedly connected to the bottom surface of the argon arc welding machine body, an interface fixedly connected to the front side surface of the argon arc welding machine body, an outer limit card frame fixedly connected to the front side surface of the argon arc welding machine body, and an inner limit card frame fixedly connected to the front side surface of the argon arc welding machine body. In the present invention, a protective shell can protect a welding gun joint and an interface to prevent the welding gun joint and the interface from being loosened by impact during welding, resulting in poor welding, thereby preventing welding errors and improving welding effects. A slot formed after two clamping tooth baffles are closed clamps a connecting line between the welding gun joint and the welding gun to prevent external force from dragging the connecting line and the connecting lines from being entangled with each other, thereby further preventing the welding gun joint from loosening.

Description

Technical Field

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

[0002] Argon arc welding machine is a machine that uses argon arc welding and adopts high-voltage breakdown arc starting method. Argon arc welding, also known as tungsten inert gas shielded arc welding, refers to a welding method using industrial tungsten or active tungsten as a non-melting electrode and inert gas as protection, referred to as TIG, and is generally used for welding thin plates of 6 to 10 mm and single-sided welding and double-sided forming of thick plates. In the prior art, the welding machine interface is generally exposed to the outside, and when the welding machine interface is connected to the welding gun joint, it is easily loosened by impact, resulting in poor welding and affecting the welding quality.

[0003] The patent with the announcement number CN115740693A discloses an argon arc welding machine, which specifically relates to an argon arc welding machine, including a carrier, a plurality of first hydraulic rods are arranged at the lower end of the carrier, the lower ends of the first hydraulic rods are all arranged with universal wheels, a fixing plate is arranged at the front and rear directions of the left end of the carrier, a limiting ring is arranged in the fixing plate, a connecting rod is arranged at the right end of the limiting ring, and the lower ends of the two connecting rods are arranged with the same workbench, a welding machine housing is arranged in the carrier, limiting grooves are arranged at the front and rear ends of the welding machine housing, and heat dissipation holes are opened on the limiting grooves, a limiting frame is arranged at the left end of the welding machine housing, and the limiting frame A dustproof net is arranged inside, a motor is arranged on the dustproof net, a rotating rod is arranged at the right end of the motor, and a plurality of fan blades are arranged on the right part of the rotating rod. The present invention realizes the convenient movement of the welding machine through a carrier and a universal wheel, realizes the rotation of the workbench through structures such as tracks, limit rings and connecting rods, and realizes heat dissipation through structures such as heat dissipation holes and fan blades. Although this patent solves the above problems, it still cannot protect the welding machine interface, and it is easy for the welding gun joint to loosen during use, resulting in poor welding and affecting the welding quality. Therefore, an argon arc welding machine for welding metal products is proposed to solve the above problems. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a argon arc welding machine for welding metal products in view of the deficiencies in the above-mentioned prior art.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: an argon arc welding machine for welding metal products, including an argon arc welding machine body, the top surface of the argon arc welding machine body is fixedly connected with a handle, the bottom surface of the argon arc welding machine body is fixedly connected with a foot pad, the front side of the argon arc welding machine body is fixedly connected with an interface, the front side of the argon arc welding machine body is fixedly connected with an outer limit card frame, the front side of the argon arc welding machine body is fixedly connected with an inner limit card frame, the inner surface of the outer limit card frame is clamped with a protective shell, the front side of the protective shell is fixedly connected with a limit card plate, adjustment grooves are opened on both sides of the protective shell, and the upper and lower sides of the inner wall of the protective shell are fixedly connected with an elastic telescopic rod, and the elastic telescopic rod One end away from the inner wall of the protective shell is fixedly connected with a connecting piece, the side of the connecting piece away from the argon arc welding machine body is fixedly connected with a toothed baffle, both sides of the toothed baffle are fixedly connected with guiding oblique rods, both sides of the protective shell are fixedly connected with fixed connecting plates, the side of the fixed connecting plate close to the argon arc welding machine body is fixedly connected with an elastic telescopic rod 2, the side of the elastic telescopic rod 2 close to the argon arc welding machine body is fixedly connected with a toggle block, the side of the toggle block close to the protective shell is fixedly connected with a sliding shaft, the end of the sliding shaft close to the guiding oblique rod is fixedly connected with a transmission column, the front side of the argon arc welding machine body is provided with a fixing device for quickly installing and disassembling the protective shell for protecting the interface and the welding gun joint, the argon arc welding machine body A protective device is provided on the front side of the body to prevent the welding gun joint and the interface from being damaged by overheating when they are connected, the inner surface of the protective shell and the outer surface of the inner limit card frame are in contact with each other, the tooth baffle plate and the inner surface of the limit card plate are slidably connected, the sliding shaft and the inner surface of the adjusting slide groove are slidably connected, and the inclined surfaces of the transmission column and the guide inclined plate are in contact with each other. Before inserting the welding gun joint into the interface, the protective shell is first inserted between the outer limit card frame and the inner limit card frame. The protective shell can protect the welding gun joint and the interface, and the slot formed by the closing of the upper and lower tooth baffles clamps the connecting line between the welding gun joint and the welding gun, and the toggle block is pushed toward the side close to the argon arc welding machine body, and the toggle block drives the sliding shaft in the adjusting slide groove to move close to the argon arc welding machine body. The toggle block drives the sliding shaft and the transmission column to move to the side away from the argon arc welding machine body, and the guide oblique rod loses the resistance of the transmission column. Then the elastic telescopic rod one elastically stretches and drives the upper and lower connecting parts closer to each other, and the connecting parts drive the two tooth baffles closer to each other, and finally close, and clamp the connecting line between the welding gun connector and the welding gun.

[0006] Preferably, the fixing device includes a slot column, a spring, a clamping rod, and a clamping hole, the slot column is fixedly connected to the front side surface of the inner limit clamping frame, the spring is fixedly connected to the inner wall of the slot column, the clamping rod is fixedly connected to one end of the spring close to the protective shell, and the clamping hole is arranged on both sides of the protective shell, and the fixing device also includes a movable slide groove, a slide rod, a guide inclined plate, and a transmission inclined plate, the movable slide groove is arranged on the circumferential surface of the slot column, the slide rod is slidably connected to the inner surface of the movable slide groove, the guide inclined plate is fixedly connected to one end of the slide rod away from the slot column, the transmission inclined plate is fixedly connected to one end of the transmission column close to the guide inclined plate, the clamping rod is slidably connected to the inner wall of the slot column, and the clamping rod and the end of the slide rod close to the slot column are fixedly connected Then, the inclined surface of the transmission inclined plate and the inclined surface of the guide inclined plate contact each other, and after the protective shell is inserted between the outer limit card frame and the inner limit card frame, the card hole is aligned with the slot hole of the card slot column. At this time, the spring pops out the card rod, so that the card rod is inserted into the card hole, and then the protective shell is locked. When the transmission column moves to the side close to the argon arc welding machine body, it drives the transmission inclined plate to move. The transmission inclined plate pushes the guide inclined plate to move to the side away from the inner wall of the protective shell through the guidance of the inclined surface. The guide inclined plate drives the sliding rod to slide in the movable sliding groove to the side away from the inner wall of the protective shell, and the sliding rod drives the card rod to disengage from the card hole and away from the inner wall of the protective shell. At this time, the protective shell loses the locking of the card rod and can be quickly pulled out from between the outer limit card frame and the inner limit card frame.

[0007] Preferably, the protection device includes a ventilation net, a cleaning roller, and a rotating rod. The ventilation net is fixedly connected to the upper and lower inner surfaces of the protective shell, the rotating rod is arranged inside the protective shell, and the cleaning roller is fixedly connected to the circumferential surface of the rotating rod. The protection device also includes a connecting rod, a snap ring, a roller, and a friction guide. The connecting rod is fixedly connected to the upper and lower sides of the transmission inclined plate, the snap ring is fixedly connected to the end of the connecting rod away from the transmission inclined plate, the roller is fixedly connected to both ends of the circumferential surface of the rotating rod, and the friction guide is fixedly connected to the upper and lower sides of the inner wall of the protective shell. The rotating rod and the inner surface of the snap ring are rotatably connected, and the circumferential surface of the roller and the inner surface of the friction guide are in contact with each other. The circumferential surface of the cleaning roller and one side of the ventilation net are in contact with each other. When the argon arc welding machine body is working, heat is generated at the connection between the interface and the welding gun joint. The heat is quickly conducted from the ventilation net to the outside of the device and dissipated. When the transmission inclined plate moves, it drives the connecting rod to move, the connecting rod drives the retaining ring to move, the retaining ring drives the rotating rod to move, and the rotating rod drives the cleaning roller to move. When the cleaning roller moves, it contacts the ventilation net and generates friction. When the cleaning roller rubs against the ventilation net, the dust and impurities stuck on the ventilation net are swept away. When the rotating rod moves, it drives the roller to roll in the friction guide rail, the roller drives the rotating rod to rotate in the retaining ring, and the rotating rod drives the cleaning roller to rotate. When the cleaning roller rotates, the friction and contact efficiency between the cleaning roller and the ventilation net are enhanced.

[0008] The present invention adopts the above technical solution to bring the following beneficial effects:

[0009] 1. The argon arc welding machine used for welding metal products has a protective shell that can protect the welding gun joint and interface to prevent the welding gun joint and interface from being impacted and loosened during welding, resulting in unsmooth welding, thereby preventing welding errors and improving welding effects. The slot formed after the two tooth baffles are closed clamps the connecting wire between the welding gun joint and the welding gun to prevent external force from dragging the connecting wire and the connecting wire from being entangled with each other, further preventing the welding gun joint from loosening. The connecting piece drives the two tooth baffles to approach each other, and finally closes, and clamps the connecting wire between the welding gun joint and the welding gun, thereby improving ease of use.

[0010] 2. The argon arc welding machine used for welding metal products has a clamping rod inserted into the clamping hole to lock the protective shell, thereby improving the tightness of the connection between the protective shell and the outer limit clamping frame and the inner limit clamping frame, avoiding the protective shell from falling off due to impact, and improving the protective effect of the protective shell. After the protective shell loses the lock of the clamping rod, it can be quickly pulled out from between the outer limit clamping frame and the inner limit clamping frame, making it easier to disassemble the protective shell, and facilitating the staff to check the interface after disassembling the protective shell, further improving the ease of use of the device.

[0011] 3. The argon arc welding machine used for welding metal products can quickly transfer heat from the ventilation net to the outside of the device for dissipation, avoiding overheating of the interface and welding gun joint due to heat accumulation, and improving the protection effect of the interface and welding gun joint. When the cleaning roller rubs against the ventilation net, it can sweep away dust and impurities stuck on the ventilation net to prevent the ventilation net from being blocked, thereby improving the heat dissipation effect of the ventilation net. When the cleaning roller rotates, it enhances the friction and contact efficiency between the cleaning roller and the ventilation net, thereby improving the cleaning efficiency and further improving the heat dissipation effect of the ventilation net. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional overall structure of the present invention;

[0013] Figure 2 It is a schematic diagram of the front side cross-sectional three-dimensional structure of the present invention;

[0014] Figure 3 It is a schematic diagram of the front side cross-sectional three-dimensional structure of the protective housing of the present invention;

[0015] Figure 4 For the present invention Figure 3 A is a schematic diagram of the enlarged structure of the middle part;

[0016] Figure 5 It is a schematic diagram of the front side cross-sectional three-dimensional structure of the latch baffle of the present invention;

[0017] Figure 6 It is a schematic diagram of the front side cross-sectional three-dimensional structure of the fixing device of the present invention;

[0018] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure of B;

[0019] Figure 8 It is a schematic diagram of the front side cross-sectional three-dimensional structure of the protection device of the present invention.

[0020] In the figure: 1. Argon arc welding machine body; 2. Grip; 3. Foot pad; 4. Interface; 5. External limit card frame; 51. Internal limit card frame; 52. Protective shell; 53. Limit card plate; 54. Adjustment slide; 55. Elastic telescopic rod 1; 56. Connector; 57. Gear baffle; 58. Guide inclined rod; 59. Fixed connecting plate; 510. Elastic telescopic rod 2; 511. Toggle block; 512. Sliding shaft; 513. Transmission column; 6. Fixing device; 61. Slot column; 62. Spring; 63. Card rod; 64. Card hole; 65. Movable slide; 66. Slide rod; 67. Guide inclined plate; 68. Transmission inclined plate; 7. Protective device; 71. Ventilation net; 72. Cleaning roller; 73. Rotating rod; 74. Connecting rod; 75. Snap ring; 76. Roller; 77. Friction guide rail. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-Figure 8An embodiment of the present invention is: an argon arc welding machine for welding metal products, comprising an argon arc welding machine body 1, a handle 2 is fixedly connected to the top surface of the argon arc welding machine body 1, a foot pad 3 is fixedly connected to the bottom surface of the argon arc welding machine body 1, an interface 4 is fixedly connected to the front side of the argon arc welding machine body 1, an outer limit card frame 5 is fixedly connected to the front side of the argon arc welding machine body 1, an inner limit card frame 51 is fixedly connected to the front side of the argon arc welding machine body 1, a protective shell 52 is clamped on the inner surface of the outer limit card frame 5, a limit card plate 53 is fixedly connected to the front side of the protective shell 52, and adjustment slide grooves 54 are opened on both sides of the protective shell 52, The upper and lower sides of the inner wall of the protective shell 52 are fixedly connected with an elastic telescopic rod 1 55, and the end of the elastic telescopic rod 1 55 away from the inner wall of the protective shell 52 is fixedly connected with a connecting piece 56, and the side of the connecting piece 56 away from the argon arc welding machine body 1 is fixedly connected with a tooth baffle 57, and the two sides of the tooth baffle 57 are fixedly connected with guide inclined rods 58, and the two sides of the protective shell 52 are fixedly connected with fixed connecting plates 59, and the side of the fixed connecting plate 59 close to the argon arc welding machine body 1 is fixedly connected with an elastic telescopic rod 2 510, and the side of the elastic telescopic rod 2 510 close to the argon arc welding machine body 1 is fixedly connected with a toggle block 511, and the toggle block 511 is close to the A sliding shaft 512 is fixedly connected to one side of the protective shell 52, and a transmission column 513 is fixedly connected to one end of the sliding shaft 512 close to the guide inclined rod 58. A fixing device 6 for quickly installing and removing the protective shell 52 for protecting the interface 4 and the welding gun joint is provided on the front side of the argon arc welding machine body 1. A protective device 7 is provided on the front side of the argon arc welding machine body 1 to prevent the welding gun joint from being damaged by overheating when the interface 4 is connected. The inner surface of the protective shell 52 and the outer surface of the inner limit card frame 51 are in contact with each other, the tooth baffle plate 57 and the inner surface of the limit card plate 53 are slidably connected, and the sliding shaft 512 and the inner surface of the adjustment slide groove 54 are slidably connected. The inclined surfaces of the transmission column 513 and the guide inclined plate 67 are in contact with each other, and the protective shell 52 can protect the welding gun joint and the interface 4 to prevent the welding gun joint and the interface 4 from being impacted and loosened during welding, resulting in unsmooth welding, thereby preventing welding errors and improving the welding effect. The slot formed after the two tooth baffles 57 are closed clamps the connecting wire between the welding gun joint and the welding gun to prevent the external force from dragging the connecting wire and the connecting wire from being entangled with each other, further preventing the welding gun joint from loosening, and the connecting piece 56 drives the two tooth baffles 57 to approach each other, and finally closes, and clamps the connecting wire between the welding gun joint and the welding gun, thereby improving the convenience of use.

[0023] Working principle: before inserting the welding gun joint into the interface 4, first insert the protective shell 52 between the outer limit card frame 5 and the inner limit card frame 51, the protective shell 52 can protect the welding gun joint and the interface 4 to prevent the welding gun joint and the interface 4 from being hit and loosened during welding, resulting in unsmooth welding, thereby preventing welding errors and improving the welding effect. The slot formed after the upper and lower tooth baffles 57 are closed clamps the connecting wire between the welding gun joint and the welding gun to prevent the connecting wire from being dragged by external force and the connecting wire from being entangled with each other, further preventing the welding gun joint from loosening, and pushing the toggle block 511 toward the side close to the argon arc welding machine body 1, the toggle block 511 drives the sliding shaft 512 to slide in the adjusting slide groove 54 toward the side close to the argon arc welding machine body 1, and the sliding shaft 512 drives the transmission column 513 to move toward the side close to the argon arc welding machine body 1 The guide inclined rod 58 loses the resistance of the transmission column 513, and then the elastic telescopic rod 1 55 elastically stretches to drive the upper and lower connecting members 56 to approach each other, and the connecting member 56 drives the two tooth baffles 57 to approach each other, and finally closes, and clamps the connecting line between the welding gun connector and the welding gun, thereby improving the convenience of use.

[0024] See also Figure 1-Figure 8On the basis of the above embodiment, in another embodiment of the present invention, the fixing device 6 includes a slot column 61, a spring 62, a clamping rod 63, and a clamping hole 64. The slot column 61 is fixedly connected to the front side of the inner limit clamping frame 51, the spring 62 is fixedly connected to the inner wall of the slot column 61, the clamping rod 63 is fixedly connected to the end of the spring 62 close to the protective shell 52, and the clamping hole 64 is provided on both sides of the protective shell 52. The fixing device 6 also includes a movable slide 65, a slide rod 66, a guide inclined plate 67, and a transmission inclined plate 68. The movable slide 65 is provided on the circumferential surface of the slot column 61, the slide rod 66 is slidably connected to the inner surface of the movable slide 65, the guide inclined plate 67 is fixedly connected to the end of the slide rod 66 away from the slot column 61, and the transmission inclined plate 68 is fixedly connected to the transmission column 513 close to the guide inclined plate At one end of the plate 67, the card rod 63 is slidably connected to the inner wall of the card slot column 61, the card rod 63 and the end of the slide rod 66 close to the card slot column 61 are fixedly connected, the inclined surface of the transmission inclined plate 68 and the inclined surface of the guide inclined plate 67 are in contact with each other, and the card rod 63 is inserted into the card hole 64 to lock the protective shell 52, thereby improving the tightness of the connection between the protective shell 52 and the outer limit card frame 5 and the inner limit card frame 51, avoiding the protective shell 52 from falling off due to impact, and improving the protective effect of the protective shell 52. After the protective shell 52 loses the lock of the card rod 63, it can be quickly pulled out from between the outer limit card frame 5 and the inner limit card frame 51, making it easier to disassemble the protective shell 52, and facilitating the staff to inspect the interface 4 after disassembling the protective shell 52, further improving the convenience of use of the device.

[0025] Working principle: After the protective shell 52 is inserted between the outer limit card frame 5 and the inner limit card frame 51, the card hole 64 is aligned with the slot hole of the card slot column 61. At this time, the spring 62 pops out the card rod 63, so that the card rod 63 is inserted into the card hole 64, and then the protective shell 52 is locked, which improves the tightness of the connection between the protective shell 52 and the outer limit card frame 5 and the inner limit card frame 51, avoids the protective shell 52 from falling off due to impact, and improves the protective effect of the protective shell 52. When the transmission column 513 moves to the side close to the argon arc welding machine body 1, it drives the transmission inclined plate 68 to move, and the transmission inclined plate 68 passes The guide of the inclined surface pushes the guide inclined plate 67 to move to the side away from the inner wall of the protective shell 52, and the guide inclined plate 67 drives the slide bar 66 to slide in the movable slide groove 65 to the side away from the inner wall of the protective shell 52, and the slide bar 66 then drives the clamping rod 63 to disengage from the clamping hole 64 and away from the inner wall of the protective shell 52. At this time, the protective shell 52 loses the lock of the clamping rod 63 and can be quickly pulled out from between the outer limit clamp frame 5 and the inner limit clamp frame 51, making it easier to disassemble the protective shell 52, and it is convenient for the staff to check the interface 4 after disassembling the protective shell 52, further improving the convenience of use of the device.

[0026] See also Figure 1-Figure 8On the basis of the above embodiment, in another embodiment of the present invention, the protection device 7 includes a ventilation net 71, a cleaning roller 72, and a rotating rod 73. The ventilation net 71 is fixedly connected to the inner surfaces of the upper and lower sides of the protective shell 52. The rotating rod 73 is arranged inside the protective shell 52. The cleaning roller 72 is fixedly connected to the circumferential surface of the rotating rod 73. The protection device 7 also includes a connecting rod 74, a snap ring 75, a roller 76, and a friction guide rail 77. The connecting rod 74 is fixedly connected to the upper and lower sides of the transmission inclined plate 68. The snap ring 75 is fixedly connected to one end of the connecting rod 74 away from the transmission inclined plate 68. The roller 76 is fixedly connected to both ends of the circumferential surface of the rotating rod 73. The friction guide rail 77 is fixedly connected to the upper and lower sides of the inner wall of the protective shell 52. 3 is rotatably connected to the inner surface of the retaining ring 75, the circumferential surface of the roller 76 and the inner surface of the friction guide rail 77 are in contact with each other, the circumferential surface of the cleaning roller 72 and one side of the ventilation net 71 are in contact with each other, and the heat is quickly transferred from the ventilation net 71 to the outside of the device for dissipation, thereby avoiding heat accumulation and overheating of the interface 4 and the welding gun joint, and improving the protection effect of the interface 4 and the welding gun joint. When the cleaning roller 72 rubs against the ventilation net 71, the dust and impurities stuck on the ventilation net 71 are swept away to prevent the ventilation net 71 from being blocked, thereby improving the heat dissipation effect of the ventilation net 71. When the cleaning roller 72 rotates, the friction and contact efficiency between the cleaning roller 72 and the ventilation net 71 are enhanced, thereby improving the cleaning efficiency, and further improving the heat dissipation effect of the ventilation net 71.

[0027] Working principle: When the argon arc welding machine body 1 is working, heat is generated at the connection between the interface 4 and the welding gun joint. The heat is quickly transferred from the ventilation net 71 to the outside of the device and dissipated, avoiding heat accumulation and overheating of the interface 4 and the welding gun joint, thereby improving the protection effect of the interface 4 and the welding gun joint. When the transmission inclined plate 68 moves, it drives the connecting rod 74 to move, the connecting rod 74 drives the retaining ring 75 to move, the retaining ring 75 drives the rotating rod 73 to move, and the rotating rod 73 drives the cleaning roller 72 to move. When the cleaning roller 72 moves, it contacts the ventilation net 71 and generates friction. When the cleaning roller 72 rubs against the ventilation net 71, the dust and impurities stuck on the ventilation net 71 are swept away to prevent the ventilation net 71 from being blocked, thereby improving the heat dissipation effect of the ventilation net 71. When the rotating rod 73 moves, it drives the roller 76 to roll in the friction guide rail 77. The roller 76 drives the rotating rod 73 to rotate in the retaining ring 75. The rotating rod 73 drives the cleaning roller 72 to rotate. When the cleaning roller 72 rotates, the friction and contact efficiency between the cleaning roller 72 and the ventilation net 71 are enhanced, thereby improving the cleaning efficiency and further improving the heat dissipation effect of the ventilation net 71.

[0028] The present invention provides a argon arc welding machine for welding metal products. There are many methods and ways to implement the technical solution. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A argon arc welding machine for welding metal products, comprising a argon arc welding machine body (1), characterized in that: The top surface of the argon arc welding machine body (1) is fixedly connected to a handle (2), the bottom surface of the argon arc welding machine body (1) is fixedly connected to a foot pad (3), the front side surface of the argon arc welding machine body (1) is fixedly connected to an interface (4), the front side surface of the argon arc welding machine body (1) is fixedly connected to an external limit card frame (5), the front side surface of the argon arc welding machine body (1) is fixedly connected to an internal limit card frame (51), the inner surface of the external limit card frame (5) is clamped with a protective shell (52), the front side surface of the protective shell (52) is fixedly connected to a limit card plate (53), both sides of the protective shell (52) are provided with adjustment slots (54), and the upper and lower sides of the inner wall of the protective shell (52) are fixedly connected to an elastic telescopic rod (55), and the elastic telescopic rod (55) is away from the protective shell (5 2) One end of the inner wall is fixedly connected to a connecting piece (56), a side of the connecting piece (56) away from the argon arc welding machine body (1) is fixedly connected to a toothed baffle plate (57), both sides of the toothed baffle plate (57) are fixedly connected to guide inclined rods (58), both sides of the protective shell (52) are fixedly connected to fixed connecting plates (59), a side of the fixed connecting plate (59) close to the argon arc welding machine body (1) is fixedly connected to a second elastic telescopic rod (510), a side of the second elastic telescopic rod (510) close to the argon arc welding machine body (1) is fixedly connected to a toggle block (511), a side of the toggle block (511) close to the protective shell (52) is fixedly connected to a sliding shaft (512), and one end of the sliding shaft (512) close to the guide inclined rod (58) is fixedly connected to a transmission column (513); The front side of the argon arc welding machine body (1) is provided with a fixing device (6) for quickly installing and removing a protective housing (52) for protecting the interface (4) and the welding gun joint, and the front side of the argon arc welding machine body (1) is provided with a protection device (7) for preventing the welding gun joint and the interface (4) from being damaged by overheating when connected; The inner surface of the protective housing (52) and the outer surface of the inner limit clamping frame (51) are in contact with each other, the clamping tooth baffle (57) and the inner surface of the limit clamping plate (53) are slidably connected, the sliding shaft (512) and the inner surface of the adjustment slide groove (54) are slidably connected, and the inclined surfaces of the transmission column (513) and the guide inclined plate (67) are in contact with each other; The fixing device (6) comprises a slot column (61), a spring (62), a clamping rod (63), and a clamping hole (64); the slot column (61) is fixedly connected to the front side of the inner limit clamping frame (51); the spring (62) is fixedly connected to the inner wall of the slot column (61); the clamping rod (63) is fixedly connected to one end of the spring (62) close to the protective shell (52); and the clamping hole (64) is provided on both sides of the protective shell (52).

2. The argon arc welding machine for metal product welding according to claim 1, characterized in that: The fixing device (6) further comprises a movable slide groove (65), a slide rod (66), a guide inclined plate (67), and a transmission inclined plate (68); the movable slide groove (65) is formed on the circumferential surface of the slot column (61); the slide rod (66) is slidably connected to the inner surface of the movable slide groove (65); the guide inclined plate (67) is fixedly connected to one end of the slide rod (66) away from the slot column (61); and the transmission inclined plate (68) is fixedly connected to one end of the transmission column (513) close to the guide inclined plate (67).

3. The argon arc welding machine for metal product welding according to claim 2, characterized in that: The clamping rod (63) is slidably connected to the inner wall of the clamping slot column (61); the clamping rod (63) is fixedly connected to one end of the sliding rod (66) close to the clamping slot column (61); and the inclined surface of the transmission inclined plate (68) and the inclined surface of the guide inclined plate (67) are in contact with each other.

4. The argon arc welding machine for metal product welding according to claim 3, characterized in that: The protective device (7) comprises a ventilation net (71), a cleaning roller (72), and a rotating rod (73); the ventilation net (71) is fixedly connected to the upper and lower inner surfaces of the protective shell (52); the rotating rod (73) is arranged inside the protective shell (52); and the cleaning roller (72) is fixedly connected to the circumferential surface of the rotating rod (73).

5. The argon arc welding machine for metal product welding according to claim 4, characterized in that: The protection device (7) further comprises a connecting rod (74), a snap ring (75), a roller (76), and a friction guide rail (77); the connecting rod (74) is fixedly connected to upper and lower sides of the transmission inclined plate (68); the snap ring (75) is fixedly connected to an end of the connecting rod (74) away from the transmission inclined plate (68); the roller (76) is fixedly connected to both ends of the circumferential surface of the rotating rod (73); and the friction guide rail (77) is fixedly connected to upper and lower sides of the inner wall of the protective housing (52).

6. The argon arc welding machine for metal product welding according to claim 5, characterized in that: The rotating rod (73) and the inner surface of the clamping ring (75) are rotatably connected, the circumferential surface of the roller (76) and the inner surface of the friction guide rail (77) are in contact with each other, and the circumferential surface of the cleaning roller (72) and one side of the ventilation net (71) are in contact with each other.

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