Argon filling protection device for argon arc welding

Abstract

The utility model belongs to the technical field of argon arc welding auxiliary devices, and particularly relates to an argon arc welding argon filling protection device which comprises a basic protection piece and an expansion protection frame. The foundation protection piece comprises a semi-arc-shaped bottom plate, semi-arc-shaped side plates connected to the two sides of the bottom plate, end plates arranged at the two ends of the bottom plate and an air inlet formed in the bottom plate in a penetrating mode, and the side plates, the end plates and the bottom plate define a protection groove body with the open outer end face. The whole expanding protection frame is in a semi-arc shape, the inner diameter of the expanding protection frame is the same as the outer diameter of the protection groove body, and the expanding protection frame is detachably connected to the outer end face of the protection groove body and used for adjusting the radius of the outermost circle of the protection device. The argon filling protection device is used for solving the technical problems that an existing argon filling protection device is large in plugging space, the inflation amount needs to be increased, and the production cost is high.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of argon arc welding auxiliary device, specifically relates to an argon arc welding argon filling protection device. BACKGROUND

[0002] The argon arc welding technology is a kind of welding technology based on the principle of ordinary electric arc welding, utilizes the protection of argon to metal welding material, makes welding material melt into liquid state to form molten pool on the base material to be welded by high current, and makes the base metal and welding material reach metallurgical combination, since argon is continuously sent in high-temperature melting welding, welding material cannot contact with oxygen in air, thereby preventing the oxidation of welding material, so that stainless steel, iron hardware metal can be welded.

[0003] For producing high-purity nitrogen and other high-purity gas tank, it is mostly welded, and the welding usually adopts argon arc welding process. At present, the protection device of argon arc welding is mostly to block the end of tubular raw material, and argon is filled in the blocked space, but the blocked space is large, the amount of gas used is large, and the production cost of the tank is increased. UTILITY MODEL CONTENT

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an argon arc welding argon filling protection device to solve the technical problems of large blocked space of the current argon filling protection device, large amount of gas needed, and high production cost.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: an argon arc welding argon filling protection device, the protection device includes a basic protection part and an enlarged protection frame, the basic protection part includes a semicircular bottom plate, semicircular side plates connected to both sides of the bottom plate, end plates provided at both ends of the bottom plate and gas inlet holes provided through the bottom plate, and the side plates, the end plates and the bottom plate enclose a protection groove body with an open outer end face, the enlarged protection frame is semicircular in whole and has the same inner diameter as the outer diameter of the protection groove body, and the enlarged protection frame can be detachably connected to the outer end face of the protection groove body to adjust the outermost radius of the protection device.

[0006] Preferably, the enlarged protection frame includes two semicircular extension side plates and two extension end plates, and the extension side plates correspond to the side plates and the extension end plates correspond to the end plates when connected with the protection groove body.

[0007] Preferably, the enlarged protection frame is provided with a limiting connecting lug close to the inner end face of the protection groove body to ensure the stability and sealing property of connection.

[0008] Preferably, the enlarged protection frame is provided with a sealing gasket away from the outer end face of the protection groove body.

[0009] Preferably, the side plates and the end plate outer end faces are provided with sealing gaskets.

[0010] Preferably, the protection device further comprises an adjustable support connected to the bottom plate, for supporting on the inner wall of the tubular raw material to be welded, away from the side wall of the tubular raw material.

[0011] Preferably, the adjustable support comprises a sleeve connected to the bottom plate, a telescopic rod telescopically connected in the sleeve, and a locking bolt passing through the sleeve and used for locking the telescopic rod.

[0012] Preferably, the end of the telescopic rod is provided with an arc-shaped support block.

[0013] The beneficial effects of the technical scheme of the utility model are as follows:

[0014] The semicircular arc-shaped protection groove body of the utility model is convenient for plugging the to-be-welded part of the tubular raw material, the plugging space is only the space in the protection groove body, the plugging space is small, the inflation amount is saved, and the production cost is reduced. By setting the detachable enlarged protection frame outside the protection groove body, according to the inner diameter of the tubular raw material to be welded, the enlarged protection frame with a suitable outer diameter is selected and connected to the outer end face of the protection groove body, so that the outer diameter of the protection device is increased, thereby adapting to the welding of tubular raw materials with different diameters, and the application range of the protection device is expanded. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is an embodiment of an argon arc welding argon filling protection device.

[0016] Figure 2 It is a schematic view of the base protection member from the top direction.

[0017] Figure 3 It is an embodiment of an argon arc welding argon filling protection device.

[0018] Figure 4 It is Figure 3 It is an enlarged schematic view of A in the middle.

[0019] Among them, Figures 1-4 1-base protection member, 11-side plate, 12-end plate, 13-sealing gasket, 14-air inlet hole, 15-bottom plate, 2-adjustable support, 21-locking bolt, 22-sleeve, 23-telescopic rod, 24-support block, 3-enlarged protection frame, 31-extended end plate, 32-extended side plate, 33-limiting connecting lug. DETAILED DESCRIPTION

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments, and do not limit the scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] The specific implementation method is as follows:

[0024] Example 1, such as Figures 1-4 As shown, an argon arc welding argon purging protection device includes a basic protection component 1 and an enlarged protection frame 3.

[0025] The basic protective component 1 includes a base plate 15, side plates 11, end plates 12, and an air inlet 14. Both the base plate 15 and side plates 11 are semi-circular arc-shaped, with the inner diameter of the side plates 11 being the same as the radius of the base plate 15. Two side plates 11 are provided and sealed to both sides of the base plate 15, and two end plates 12 are provided and respectively connected to both ends of the base plate 15. The two sides of the end plates 12 are connected to the side plates 11. Together, the side plates 11, end plates 12, and base plate 15 enclose a protective groove with an open outer end face; that is, the basic protective component 1 is generally semi-circular arc-shaped.

[0026] The enlarged protective frame 3 is semi-circular in shape, and its inner diameter is the same as the outer diameter of the protective tank. The enlarged protective frame 3 is detachably connected to the outer end face of the protective tank and is sealed, forming an argon-filled protective device with a larger outer diameter. In this embodiment, the basic protective component is equipped with multiple enlarged protective frames with different outer diameters. The inner diameters of the multiple enlarged protective frames are the same. By selecting enlarged protective frames with different outer diameters, argon-filled protective devices with different outer diameters can be assembled to adapt to the welding of tubular raw materials with different diameters.

[0027] The argon arc welding argon filling protection device according to the embodiment is used, according to the pipe diameter of the tubular raw material, the appropriate expansion protection frame 3 is selected to be connected with the basic protection piece 1, according to the pipe diameter, the basic protection piece 1 can also be used alone, the argon filling protection device is connected in the tubular raw material, is close to the inner wall of the pipe and straddles the two joints to be welded, argon is filled into the protection groove body through the air inlet hole, and the space required for the argon filling is only the space in the protection groove body, so that the plugging space is greatly reduced, the gas filling amount is saved, and the production cost is saved.

[0028] Further, the expansion protection frame 3 comprises two extension side plates 32 and two extension end plates 31. The extension side plate 32 is a semicircular arc shape. The extension end plate 31 is connected at the end of the two parallel arranged two extension side plates 32, so that the two extension side plates 32 and the two extension end plates 31 enclose a frame body which is a semicircular arc shape as a whole. When the expansion protection frame 3 is connected with the basic protection piece 1, the two extension side plates 32 correspondingly abut against the side plates 11, and the two extension end plates 31 correspondingly abut against the two end plates 12, so as to realize the detachable connection of the expansion protection frame 3 and the basic protection piece 1, and form an argon filling protection device with a larger outer diameter.

[0029] Further, the expansion protection frame 3 is provided with a limiting connecting lug 33 close to the inner end face of the protection groove body. Specifically, the connecting lug is arranged at the inner end face of the extension side plate 32 and the extension end plate 31, and encloses the limiting connecting lug 33. When the expansion protection frame 3 is connected with the basic protection piece 1, the limiting connecting lug is embedded in the inner wall of the protection groove body, so as to ensure the stability and sealing property of the connection.

[0030] Further, the protection device further comprises an adjustable support piece 2, which is used to support the protection device on the inner wall of the tubular raw material to be welded, and support on the side wall of the tubular raw material away from the basic protection piece 1, so as to ensure the stability of the connection of the protection device in the tubular raw material.

[0031] Further, the adjustable support piece 2 comprises a sleeve 22, a telescopic rod 23 and a locking bolt 21. The sleeve 22 is connected vertically on the bottom plate 15, the telescopic rod 23 is telescopically sleeved in the sleeve 22, and the locking bolt 21 penetrates through the side wall of the sleeve 22 and abuts against and locks the telescopic rod 23, so as to realize the length adjustment and locking of the adjustable support piece 2, which is simple in structure and convenient to operate.

[0032] Further, an arc-shaped support block 24 is arranged at the end of the telescopic rod 23, and the arc-shaped arrangement makes the contact surface of the support block 24 with the inner wall of the tubular raw material large, so as to improve the support stability.

[0033] Embodiment 2, as Figures 1-4As shown in the figure, the argon arc welding argon filling protection device is different from the above-mentioned embodiments in that sealing gaskets 13 are arranged on the outer end surfaces of the enlarged protection frame 3, and the outer end surfaces of the side plates 11 and the end plates 12 are also provided with sealing gaskets 13, so as to ensure the sealing connection between the enlarged protection frame 3 and the base protection member 1 and the sealing between the argon filling protection device and the inner wall of the pipe body to be protected, and other structures are not described here.

[0034] The utility model has been described above in combination with the drawings, and obviously, the specific implementation of the utility model is not limited by the above-mentioned mode, as long as various non-essential improvements are adopted by using the technical scheme of the utility model, or the concept and technical scheme of the utility model are directly applied to other occasions without improvement, which are all within the protection scope of the utility model.

Claims

1. An argon arc welding argon filling protection device, characterized by, The protection device comprises a basic protection member and an extended protection frame. The basic protection member comprises a semicircular bottom plate, semicircular side plates connected to both sides of the bottom plate, end plates arranged at both ends of the bottom plate, and air inlet holes arranged through the bottom plate. The side plates, the end plates and the bottom plate enclose a protection groove body with an open outer end face. The extended protection frame is semicircular in shape and has the same inner diameter as the outer diameter of the protection groove body. The extended protection frame is detachably connected to the outer end face of the protection groove body and is used to adjust the outermost radius of the protection device.

2. The argon arc welding argon filling protection device according to claim 1, characterized in that, The extended protection frame comprises two semicircular extension side plates and two extension end plates. When connected to the protection groove body, the extension side plates correspond to the side plates and the extension end plates correspond to the end plates.

3. The argon arc welding argon shield device according to claim 2, wherein The extended protection frame is provided with a limiting connection lug near the inner end face of the protection groove body to ensure the stability and sealing of the connection.

4. The argon arc welding argon filling protection device according to claim 3, characterized in that, The extended protection frame is provided with a sealing gasket away from the outer end face of the protection groove body.

5. The argon arc welding argon shield according to claim 4, wherein The side plates and the end plates are provided with sealing gaskets on the outer end face.

6. The argon arc welding argon protection device according to any one of claims 1 to 5, characterized by The protection device further comprises an adjustable support member connected to the bottom plate. When the protection device is supported on the inner wall of a tubular raw material to be welded, the adjustable support member is supported on the side wall of the tubular raw material away from the basic protection member.

7. The argon arc welding argon shield according to claim 6, wherein The adjustable support member comprises a sleeve connected to the bottom plate, a telescopic rod telescopically connected in the sleeve, and a locking bolt passing through the sleeve and used to lock the telescopic rod.

8. The argon arc welding argon shield according to claim 7, wherein The end of the telescopic rod is provided with an arc-shaped support block.

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