Welding argon filling protection auxiliary device

Abstract

The utility model relates to a welding argon filling protection auxiliary device, and belongs to the technical field of welding tools. The welding argon filling protection auxiliary device comprises a conveying trolley, a conveying rail which is in sliding fit with the conveying trolley and is installed in a stainless steel pipeline, an inflating mechanism and a lifting mechanism which is arranged on the conveying trolley and drives the inflating mechanism to ascend and descend. The inflation mechanism comprises an inflation base fixed to the lifting mechanism, an inflation head arranged at the top of the inflation base, an air conveying pipe arranged on the side wall of the inflation base and communicated with the inflation head and a sealing plug used for sealing the welding back hole, and the other end of the conveying pipe is communicated with a protection air source. The welding device has the effects of improving the welding quality and ensuring the physical and psychological health of operators.

Description

Technical Field

[0001] This application relates to the field of welding tooling technology, and in particular to an auxiliary device for argon purging protection during welding. Background Art

[0002] With the continuous development of modern industrial technology in my country, welding technologies for stainless steel and other materials have been widely applied in various fields, mainly due to their high strength, corrosion resistance, and aesthetic appeal. Stainless steel welding technology achieves atomic bonding by melting stainless steel materials during the welding process, thus connecting the stainless steel materials. This technology is widely used not only in construction, chemical, petroleum, food, and medical fields, but also plays an important role in shipbuilding, vehicles, automobiles, aerospace, and bridge construction.

[0003] In the welding process of stainless steel pipes, shielding gas is usually used to protect the back side of the weld to improve weld quality and reduce the probability of back oxidation. Shielding gas can effectively isolate air and reduce back oxidation. However, when welding stainless steel manifolds to flanges or stainless steel manifolds to branch pipes, the back side of the weld point is located inside the manifold, which presents a situation of limited space, poor gas diffusion, and a significant impact on the physical and mental health of operators. Utility Model Content

[0004] In order to improve welding quality and efficiency and ensure the physical and mental health of operators, this application provides a welding argon purging protection auxiliary device.

[0005] The welding argon purging protection auxiliary device provided in this application adopts the following technical solution:

[0006] An argon-filled welding protection auxiliary device includes a conveying trolley, a conveying track that slides and is installed in a stainless steel pipe, an inflation mechanism, and a lifting mechanism disposed on the conveying trolley and driving the inflation mechanism to rise and fall; the inflation mechanism includes an inflation seat fixed to the lifting mechanism, an inflation head disposed on the top of the inflation seat, a gas supply pipe disposed on the side wall of the inflation seat and communicating with the inflation head, and a sealing plug for sealing the welding back hole, the other end of the supply pipe being connected to a protective gas source.

[0007] By adopting the above technical solution, before welding, the conveying track is first installed inside the stainless steel pipe, and then the conveying trolley is driven to move back and forth on the conveying track. Through the lifting mechanism, the inflation mechanism is raised and lowered vertically, the inflation head is inserted into the welding back hole, the sealing plug and the inner wall of the welding back hole are sealed and abutted, and the protective gas source is turned on, so that the protective gas is delivered to the welding back hole. The device of this application only inflates the welding back hole, which has the effect of saving costs, improving welding efficiency and welding quality compared with the method of full inflation of protective gas. At the same time, it eliminates the need for operators to perform welding operations in a confined space, thus protecting the health of the operators.

[0008] Optionally, the bottom of the inflatable base is provided with multiple sets of locking studs and locking nuts that cooperate with the locking studs, and the lifting mechanism is provided with a mounting plate for placing the inflatable base, and the mounting plate has locking through holes that correspond one-to-one with the locking studs.

[0009] By adopting the above technical solution, the installation structure of the inflatable seat and the lifting mechanism is disclosed. The locking stud passes through the locking through hole, so that the inflatable seat is placed in close contact with the mounting plate. Then, the locking nut and the locking stud cooperate to lock and fix the inflatable seat and the lifting mechanism. The above installation structure is simple, easy to assemble, and has good connection stability.

[0010] Optionally, the sealing plug is sleeved on the inflation head, and the inflation head is provided with a clamping member for pressing the sealing plug. When the lifting mechanism drives the inflation head to rise, the sealing plug seals the welding back hole.

[0011] By adopting the above technical solution, the installation method of the sealing plug is disclosed. The sealing plug is installed on the inflation head by sleeve and fixed by the clamping component. The sealing plug can seal and block the welding back hole, reducing the leakage of protective gas.

[0012] Optionally, the sealing plug has an installation hole that fits with the inflation head, and the installation hole, the inflation head, and the inflation seat are all coaxially arranged.

[0013] By adopting the above technical solution, the coaxial arrangement of the sealing plug, inflation head and inflation seat makes the overall stability of the inflation mechanism more ideal, ensuring the sealing effect of the sealing plug on the welded back hole.

[0014] Optionally, the side wall of the inflation head is provided with a threaded portion, and the clamping member is threadedly connected to the threaded portion.

[0015] By adopting the above technical solution, a pressing method for the pressing component is disclosed. Through the threaded part and the threaded engagement of the pressing component, the sealing plug is pressed tightly onto the inflation seat. The threaded connection method has the effects of simple operation and stable pressing.

[0016] Optionally, the sealing plug includes a plug portion that is inserted into the welding back hole and a sealing portion that abuts against the inner wall of the stainless steel tube, wherein the plug portion is in sealing contact with the inner wall of the welding back hole.

[0017] By adopting the above technical solution, the sealing plug includes an insertion part and a sealing part. The insertion part is inserted into the welded back hole and seals against the inner wall of the welded back hole. While ensuring the seal, it also enables the inflation mechanism and the stainless steel pipe to be inserted and fixed, thereby improving the stability during inflation.

[0018] Optionally, the outer diameter of the plug portion is adapted to the inner diameter of the welding back hole, and the end of the plug portion is provided with a guide slope.

[0019] By adopting the above technical solution and setting the guide slope, the air inflator and the welding back hole do not need to be completely coaxial to achieve the insertion of the sealing plug, which improves the efficiency of the sealing head being inserted into the welding back hole, thereby improving the welding efficiency.

[0020] Optionally, the outer diameter of the sealing part is larger than the inner diameter of the welding back hole.

[0021] By adopting the above technical solution, the outer diameter of the sealing part is larger than that of the welding back hole, so that after the insertion part is inserted, the sealing part can abut against the inner wall of the stainless steel pipe, thereby further improving the sealing effect.

[0022] Optionally, the end sidewall of the inflation head is uniformly provided with air outlet holes that communicate with the inner cavity.

[0023] By adopting the above technical solution, the gas outlet on the side wall of the protective gas filling head is output, thereby improving the efficiency of protective gas filling of the welding back hole.

[0024] Optionally, the conveying trolley includes a conveying frame and four sets of conveying pulleys rotatably mounted on the conveying frame. The lifting mechanism includes a mechanism vertically fixed to the top of the conveying frame. The conveying frame is provided with a fixing ring, and a push rod for pushing the conveying trolley is detachably mounted on the fixing ring.

[0025] By adopting the above technical solution, the structural composition of the conveying trolley and its movement method are disclosed, as well as the assembly and disassembly of the push rod and the fixing ring, which facilitates the daily storage and use of the conveying trolley.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. The welding argon purging protection auxiliary device of this application has the effects of saving costs, improving welding efficiency and welding quality, and eliminating the need for operators to perform welding operations in confined spaces, thus protecting the health of operators;

[0028] 2. This application achieves the installation of the air-filled base and the mounting plate through the cooperation of the locking stud, locking through hole and locking nut. The installation method is simple and the locking stability is strong.

[0029] 3. This application achieves double sealing during inflation by setting up a plug-in part and a sealing part, and the sealing effect is quite ideal. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the welding argon purging protection auxiliary device and the stainless steel pipe in an embodiment of this application.

[0031] Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application.

[0032] Figure 3 This is an exploded schematic diagram of the inflation mechanism and the lifting mechanism according to an embodiment of this application.

[0033] Figure 4 This is an exploded schematic diagram of the inflatable seat and sealing plug according to an embodiment of this application.

[0034] Explanation of reference numerals in the attached drawings: 1. Conveying trolley; 11. Conveying frame; 12. Conveying pulley; 13. Push rod; 14. Fixing ring; 141. Fixing screw hole; 2. Conveying track; 3. Inflation mechanism; 31. Inflation seat; 311. Locking stud; 312. Locking nut; 32. Inflation head; 321. Air supply part; 3211. Air outlet; 322. Threaded part; 33. Air supply pipe; 34. Sealing plug; 341. Mounting hole; 342. Insertion part; 3421. Guide slope; 343. Sealing part; 35. Pressing component; 36. Pressing gasket; 4. Lifting mechanism; 41. Mounting plate; 411. Locking through hole; 5. Stainless steel pipe; 51. Welding back hole. DETAILED DESCRIPTION

[0035] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0036] This application discloses a welding argon purging protection auxiliary device.

[0037] Reference Figure 1 A welding argon-filled protective auxiliary device includes a conveying trolley 1, a conveying track 2 that slides and cooperates with the conveying trolley 1, an inflation mechanism 3, and a lifting mechanism 4 installed on the conveying trolley 1 and driving the inflation mechanism 3 to rise and fall. This device is used to fill protective gas into a stainless steel pipe 5 during the welding process. The stainless steel pipe 5 has a plurality of welding back holes 51 evenly spaced along the axial direction for welding branch pipes.

[0038] Reference Figure 1 and Figure 2The conveying trolley 1 includes a conveying frame 11, four sets of conveying pulleys 12 rotatably mounted on the conveying frame 11, and a push rod 13 for pushing the conveying trolley 1. The conveying frame 11 is generally rectangular in shape. The conveying pulleys 12 are mounted on one side of the conveying frame 11 along its length and are rotatably engaged with the conveying frame 11 via bearings. A fixing ring 14 is welded and fixed to one side of the conveying frame 11 along its width. The fixing ring 14 has fixing screw holes 141 penetrating both end faces, and the fixing screw holes 141 are parallel to the length direction of the conveying frame 11.

[0039] The conveying track 2 is a double-track structure, which is connected by stainless steel square tubes. The end of the push rod 13 is threaded with a fixed thread, so that the operator can manually pull the push rod 13 to move the conveying trolley 1.

[0040] The lifting mechanism 4 is an existing electric push rod, which is fixed to the top of the conveyor frame 11 with the output shaft arranged vertically.

[0041] The inflation mechanism 3 includes an inflation seat 31 fixed to the output shaft of the lifting mechanism 4, an inflation head 32 disposed on the top of the inflation seat 31, an air supply pipe 33 disposed on the side wall of the inflation seat 31 and communicating with the inflation head 32, and a sealing plug 34 for sealing the welding back hole 51.

[0042] The inflatable base 31 is generally cylindrical, with multiple sets of locking studs 311 and locking nuts 312 threadedly engaged with them fixed to its bottom. The locking studs 311 are fixed by welding. The output shaft of the lifting mechanism 4 is fixed with a mounting plate 41 for mounting the inflatable base 31. The mounting plate 41 has locking through holes 411 that penetrate both end faces and correspond one-to-one with the locking studs 311. The fixed connection between the inflatable base 31 and the mounting plate 41 is achieved through the engagement of the locking studs 311 and the locking nuts 312.

[0043] The inflation head 32 is a vertically arranged hollow tube, and the inflation head 32 and the inflation base 31 are coaxially arranged. Part of the inflation head 32 is inserted into the inflation base 31, and part of it extends out of the top of the inflation base 31. The inflation head 32 and the inflation base 31 can be fixed by means of threads or welding. In this embodiment, the inflation head 32 and the inflation base 31 are fixed by welding.

[0044] The gas supply pipe 33 is fixed at an angle to the side wall of the inflation base 31. One end of the gas supply pipe 33 is connected to the bottom of the inflation head 32, and the other end is connected to a gas source storing protective gas. In this embodiment, the protective gas is argon.

[0045] Reference Figure 4The portion of the inflation head 32 extending out of the inflation base 31 consists of an air supply section 321 and a threaded section 322, arranged vertically from top to bottom. The top of the air supply section 321 is sealed, and its sidewalls are evenly provided with multiple air outlet holes 3211 that communicate with the inner cavity. The threaded section 322 is an external thread provided on the inflation head 32.

[0046] A sealing plug 34, made of rubber, is fitted onto the threaded portion 322 of the inflation head 32. The sealing plug 34 has mounting holes 341 extending through both end faces and allowing the inflation head 32 to pass through. The height of the sealing plug 34 is less than the length of the threaded portion 322, so that after the sealing plug 34 is installed on the inflation seat 31, part of the threaded portion 322 is exposed to the outside. A clamping member 35, threadedly engaged with the threaded portion 322, is mounted on the inflation head 32. The clamping member 35 and the threaded portion 322 cooperate to achieve a fixed connection between the sealing plug 34 and the inflation seat 31. A clamping washer 36 is also provided between the top surfaces of the clamping member 35 and the sealing plug 34 to further improve the clamping stability of the sealing plug 34.

[0047] The sealing plug 34 is shaped like a convex frustum, comprising, from top to bottom, an insertion portion 342 and a sealing portion 343. The outer diameter of the insertion portion 342 is adapted to the inner wall of the welding back hole 51, allowing it to be inserted into the welding back hole 51 and sealed against its inner wall. The outer diameter of the sealing portion 343 is larger than that of the insertion portion 342, enabling it to fit snugly against the inner wall of the stainless steel tube 5, further improving the sealing effect. To facilitate efficient insertion of the insertion portion 342, a guide slope 3421 is provided at the top of the insertion portion 342, so that the inflation head 32 does not need to be completely coaxial with the welding back hole 51 to insert the sealing plug 34, thus improving overall welding efficiency.

[0048] The implementation principle of the welding argon protection auxiliary device in this application embodiment is as follows: First, the conveying track 2 is placed in the stainless steel pipe 5 to be welded, the push rod 13 and the fixing ring 14 are threaded together, and then the push rod 13 is pushed so that the conveying trolley 1 moves on the conveying track 2. When the gas filling mechanism 3 corresponds to the welding back hole 51, the lifting mechanism 4 is activated so that the gas filling head 32 is sealed and inserted into the welding back hole 51. The protective gas is transported along the conveying pipe to the top of the gas filling head 32, and the gas is discharged from the gas outlet 3211 and evenly fills the welding back hole 51.

[0049] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A welding argon purging protection auxiliary device, characterized in that, It includes a conveying trolley (1), a conveying track (2) that slides and cooperates with the conveying trolley (1) and is installed in a stainless steel pipe (5), an inflation mechanism (3), and a lifting mechanism (4) that is set on the conveying trolley (1) and drives the inflation mechanism (3) to rise and fall; the inflation mechanism (3) includes an inflation seat (31) fixed to the lifting mechanism (4), an inflation head (32) set on the top of the inflation seat (31), an air supply pipe (33) set on the side wall of the inflation seat (31) and communicating with the inflation head (32), and a sealing plug (34) for sealing the welding back hole (51), and the other end of the air supply pipe (33) is connected to a protective air source.

2. The welding argon purging protection auxiliary device according to claim 1, characterized in that, The bottom of the inflatable base (31) is provided with multiple sets of locking studs (311) and locking nuts (312) that cooperate with the locking studs (311). The lifting mechanism (4) is provided with a mounting plate (41) for placing the inflatable base (31). The mounting plate (41) has locking through holes (411) that correspond one-to-one with the locking studs (311).

3. The welding argon purging protection auxiliary device according to claim 1, characterized in that, The sealing plug (34) is sleeved on the inflation head (32), and the inflation head (32) is provided with a clamping member (35) for pressing the sealing plug (34). When the lifting mechanism (4) drives the inflation head (32) to rise, the sealing plug (34) seals the welding back hole (51).

4. The welding argon purging protection auxiliary device according to claim 3, characterized in that, The sealing plug (34) has an installation hole (341) that fits with the inflation head (32). The installation hole (341), the inflation head (32) and the inflation seat (31) are all coaxially arranged.

5. The welding argon purging protection auxiliary device according to claim 3, characterized in that, The side wall of the inflation head (32) is provided with a threaded part (322), and the clamping member (35) is threadedly connected to the threaded part (322).

6. The welding argon purging protection auxiliary device according to claim 1, characterized in that, The sealing plug (34) includes a plug portion (342) inserted into the welding back hole (51) and a sealing portion (343) abutting against the inner wall of the stainless steel tube (5), wherein the plug portion (342) is in sealing contact with the inner wall of the welding back hole (51).

7. The welding argon purging protection auxiliary device according to claim 6, characterized in that, The outer diameter of the plug (342) is adapted to the inner diameter of the welding back hole (51), and the end of the plug (342) is provided with a guide slope (3421).

8. The welding argon purging protection auxiliary device according to claim 6, characterized in that, The outer diameter of the sealing part (343) is larger than the inner diameter of the welding back hole (51).

9. The welding argon purging protection auxiliary device according to claim 1, characterized in that, The end sidewall of the inflation head (32) is uniformly provided with air outlet holes (3211) that connect to the inner cavity.

10. The welding argon purging protection auxiliary device according to claim 1, characterized in that, The conveying trolley (1) includes a conveying frame (11) and four sets of conveying pulleys (12) rotatably mounted on the conveying frame (11). The lifting mechanism (4) includes a vertically fixed top of the conveying frame (11). The conveying frame (11) is provided with a fixing ring (14), and a push rod (13) for pushing the conveying trolley (1) is detached and installed on the fixing ring (14).

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