CN219617024U

CN219617024U - Bellows subassembly fixed-position welding frock

Info

Publication number: CN219617024U
Application number: CN202320291484.4U
Authority: CN
Inventors: 田青华
Original assignee: Jiangsu Aidi Electromechanical Equipment Industry Co ltd
Current assignee: Jiangsu Aidi Electromechanical Equipment Industry Co ltd
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-09-01
Anticipated expiration: 2033-02-22

Abstract

The utility model discloses a positioning welding tool for a corrugated pipe assembly, which comprises a flange limiting part, a corrugated pipe limiting part and a valve rod head limiting part, wherein an opening convenient to weld is formed between the corrugated pipe limiting part and the valve rod head limiting part, the outer side of the flange limiting part is a flange positioning surface, two to four first positioning pins are arranged on the flange positioning surface, a first limiting cavity is formed in the corrugated pipe limiting part and is matched with the outer diameter of a corrugated pipe to be welded, a second limiting cavity is formed in the valve rod head limiting part and is matched with the valve rod head, the valve rod head limiting part is provided with a first pin hole and a second pin hole which penetrate through the first pin hole and the second pin hole, the middle parts of the first pin hole and the second pin hole are communicated with the second limiting cavity, and the second positioning pins are sequentially inserted into the first pin hole, a valve rod head connecting hole and the second pin hole during welding and play a role in fixing the valve rod.

Description

Bellows subassembly fixed-position welding frock

Technical Field

The utility model relates to the field of welding tools, in particular to a positioning welding tool for a corrugated pipe assembly.

Background

With the rapid development of modern industries such as chemical industry, nuclear industry and the like, the pipelines with inflammable, explosive, extremely toxic and radioactive media are increasingly used, the valves used on the pipelines and devices have special strict requirements on the leakage sealing of the pipelines and devices, and the requirements on the leakage sealing of the pipelines and the devices are not met by using a common packing sealing device, so that a valve rod sealing structure with a corrugated pipe is needed. The bellows is typically joined to a flange or other feature on the valve cover by roll welding or argon arc welding. Part of products require that the flat surface milled at the top end of the valve rod is vertical to the milled plane of the flange at the tail end, and simultaneously, the flat surface milled at the top end of the valve rod is also in 90-degree relation with four holes of the flange, and if the valve rod, the end part, the corrugated pipe and the flange are directly welded, the process requirements are difficult to ensure.

Disclosure of Invention

The utility model aims to: the utility model aims to solve the technical problem of providing a positioning welding tool for a corrugated pipe assembly, aiming at the defects in the prior art.

In order to solve the technical problems, the utility model discloses a positioning welding tool for a corrugated pipe assembly, which comprises a flange limiting part, a corrugated pipe limiting part and a valve rod head limiting part, wherein an opening which is convenient to weld is arranged between the corrugated pipe limiting part and the valve rod head limiting part, the outer side of the flange limiting part is provided with a flange positioning surface, two to four first positioning pins are arranged on the flange positioning surface, a first limiting cavity is arranged in the corrugated pipe limiting part, the first limiting cavity is matched with the outer diameter of a corrugated pipe to be welded, a second limiting cavity is arranged in the valve rod head limiting part, the second limiting cavity is matched with the valve rod head, the valve rod head limiting part is provided with a first pin hole and a second pin hole which penetrate through, the middle parts of the first pin hole and the second pin hole are communicated with the second limiting cavity, and the positioning pin is further provided with a second positioning pin, and the second positioning pin is sequentially inserted into the first pin hole, the valve rod head connecting hole and the second pin hole during welding to fix the valve rod.

In the utility model, the position of the first positioning pin is matched with the flange to be welded, and the first positioning pin is used for limiting the flange and preventing rotation during welding.

In the utility model, the sizes of the first pin hole and the second pin hole are matched with the valve rod head.

In the utility model, the first positioning pin is vertical to the flange limiting part, and the size of the first positioning pin is matched with the flange to be welded.

The beneficial effects are that: in the welding operation of the valve rod, the utility model can ensure that the plane of the valve rod is vertical to the section of the flange, and the quality of the welded product completely meets the requirements of drawing.

Drawings

The foregoing and/or other advantages of the utility model will become more apparent from the following detailed description of the utility model when taken in conjunction with the accompanying drawings and detailed description.

FIG. 1 is a front view of a tooling;

FIG. 2 is a front view of a second tool;

FIG. 3 is a side view of a tooling;

fig. 4 is a schematic view of the parts to be welded.

Reference numerals in the drawings: 1. the flange limiting part, 2, bellows limiting part, 3, valve rod head limiting part, 4, opening, 5, first locating pin, 6, first pinhole, 7, second pinhole, 8, second locating pin.

Detailed Description

Examples:

as shown in fig. 1, fig. 2 and fig. 3, the embodiment discloses a bellows assembly positioning welding fixture, including flange spacing portion 1, bellows spacing portion 2 and valve rod head spacing portion 3, be equipped with convenient welded opening 4 between bellows spacing portion and the valve rod head spacing portion, the flange spacing portion 1 outside is flange locating surface 1a, is equipped with two to four first locating pins 5 on the flange locating surface, and bellows spacing portion 2 inside is equipped with first spacing chamber 2a, and first spacing chamber 2a and the external diameter adaptation of waiting to weld the bellows, and valve rod head spacing portion 3 inside is equipped with second spacing chamber 3a, and second spacing chamber 3a and valve rod head adaptation, valve rod head spacing portion is equipped with first pinhole 6 and second pinhole 7 that run through, and first pinhole 6 and second pinhole 7 middle part and second spacing chamber 3a intercommunication still include second locating pin 8, and second locating pin 8 inserts first pinhole 6, valve rod head connecting hole and second pinhole 7 in proper order during the welding plays the fixed action to the valve rod. The position of the first positioning pin is matched with the flange to be welded, and the first positioning pin is used for limiting the flange and preventing rotation during welding. The sizes of the first pin hole and the second pin hole are matched with the valve rod head. The first positioning pin is perpendicular to the flange limiting part, and the size of the first positioning pin is matched with the flange to be welded.

When the welding tool is used, as shown in fig. 4, the valve rod 15 is welded with the welding part 9, then the corrugated pipe 11 to be welded and the flange 12 to be welded are welded at will, then the valve rod 15 and the corrugated pipe 11 to be welded are simultaneously installed in the welding tool, so that the corrugated pipe 11 to be welded is aligned with the welding part 9, the first positioning pin 5 of the flange limiting part 1 is inserted into the connecting hole of the flange 12 to be welded for positioning, and then the second positioning pin 8 at the other end is sequentially inserted into the first pin hole 6, the valve rod head connecting hole and the second pin hole 7, so that the plane of the valve rod is basically ensured to be vertical to the section of the flange, and welding operation is performed.

The utility model provides a thought and a method for positioning welding tools for bellows components, and the method and the way for realizing the technical scheme are numerous, the above description is only a preferred embodiment of the utility model, and it should be pointed out that a plurality of improvements and modifications can be made to those skilled in the art without departing from the principle of the utility model, and the improvements and the modifications are also considered as the protection scope of the utility model. The components not explicitly described in this embodiment can be implemented by using the prior art.

Claims

1. The utility model provides a bellows subassembly fixed-position welding frock, its characterized in that, including spacing portion (1) of flange, spacing portion (2) of bellows and valve rod head spacing portion (3), be equipped with convenient welded opening (4) between spacing portion of bellows and the valve rod head spacing portion, the flange spacing portion (1) outside is flange locating surface (1 a), is equipped with two to four first locating pin (5) on the flange locating surface, the inside first spacing chamber (2 a) that is equipped with of bellows spacing portion (2), the external diameter adaptation of first spacing chamber (2 a) and waiting to weld the bellows, the inside second spacing chamber (3 a) that is equipped with of valve rod head spacing portion (3), second spacing chamber (3 a) and valve rod head adaptation, valve rod head spacing portion is equipped with first pinhole (6) and second pinhole (7) that run through, first pinhole (6) and second pinhole (7) middle part and second spacing chamber (3 a) intercommunication still include second locating pin (8), second locating pin (8) insert first pinhole (6), second locating pin (8) and second pinhole connection hole and second pinhole (7) play fixed action to the valve rod when welding.

2. The bellows assembly positioning welding tool of claim 1, wherein the first positioning pin is adapted to a flange to be welded for limiting the flange and preventing rotation during welding.

3. The bellows assembly weld fixture of claim 1, wherein the first pin bore and the second pin bore are sized to fit the valve stem head.

4. The bellows assembly positioning welding tool according to claim 1, wherein the first positioning pin is perpendicular to the flange limiting portion, and the first positioning pin is sized to fit the flange to be welded.