Rotary flange welding tool and welding method

Abstract

The present invention relates to the technical field of welding tooling, and discloses a rotary flange welding tooling and a welding method. The rotary flange welding tooling comprises two relatively arranged positioning members, the two positioning members have the same shape and size, and a plurality of support members are arranged at intervals between the two positioning members, the plurality of support members are arranged around the edges of the two positioning members, and the length of each support member is the same; the positioning member is a polygonal plate-like structure, and the first edges of the two positioning members form a first positioning surface with two adjacent support members, the first positioning surface is used to position the base of the rotary flange and spot weld with the base, the second edges of the two positioning members form a second positioning surface with the support members, the second positioning surface is used to position the rotating arm of the rotary flange, the third edges of the two positioning members form a third positioning surface with the support members, and the third positioning surface is used to position the adjustment plate of the rotary flange. Its beneficial effects: it can avoid the eccentricity of the rotary flange after welding, so that the yield rate of the rotary flange is higher.

Description

Technical Field

[0001] The invention relates to the technical field of welding tooling, and in particular to a rotary flange welding tooling and a welding method. Background Art

[0002] In the process of pipe connection, flange is the most commonly used pipe fitting. It is a part that connects pipes to each other and is connected to the pipe ends. Among them, swivel flange has the characteristics of high strength and ability to rotate, and is widely used. Currently, swivel flanges are all manufactured by welding.

[0003] However, currently, when welding the rotating flange, no auxiliary welding rotating flange welding tooling is used. Instead, the various components of the rotating flange are directly welded to form an integral rotating flange. The position and size of the welded rotating flange cannot be guaranteed, and the rotating flange is prone to eccentricity during rotation, resulting in a low yield of the welded rotating flange.

[0004] Therefore, there is an urgent need for a rotary flange welding tool and a welding method that can solve the above problems. Summary of the invention

[0005] An object of the present invention is to provide a rotary flange welding tool, which can avoid eccentricity of the rotary flange formed by welding, so as to increase the yield of the rotary flange.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A rotary flange welding tool, comprising:

[0008] Two positioning members are arranged opposite to each other, and the shapes and sizes of the two positioning members are the same, and a plurality of supporting members are arranged at intervals between the two positioning members, and the plurality of supporting members are arranged at the edges of the two positioning members, and the length of each of the supporting members is the same; the positioning member is a polygonal plate-like structure, and the first edges of the two positioning members form a first positioning surface with the two adjacent supporting members, and the first positioning surface is used to position the base of the rotating flange and is spot welded with the base, the second edges of the two positioning members form a second positioning surface with the supporting member, and the second positioning surface is used to position the rotating arm of the rotating flange, and the third edges of the two positioning members form a third positioning surface with the supporting member, and the third positioning surface is used to position the adjustment plate of the rotating flange.

[0009] Preferably, the second edge is disposed adjacent to the third edge, and a first notch is disposed at a connection between the second edge and the third edge.

[0010] Preferably, the first notch is an arc-shaped notch.

[0011] Preferably, a second notch is provided on each of the two first edges, and a connecting line between the two second notches passes through the center of a first circular hole on the base for mounting a reducer.

[0012] Preferably, a third notch is provided on each of the two third edges, and a connecting line between the two third notches passes through the center of a second circular hole on the adjustment plate for mounting the reducer.

[0013] Preferably, the second notch and the third notch are both arc-shaped openings.

[0014] Preferably, the positioning member and the supporting member are fixed by welding.

[0015] Preferably, the support member is a rod-shaped structure.

[0016] Another object of the present invention is to provide a welding method for a rotating flange, which can avoid eccentricity of the rotating flange formed by welding, so as to increase the yield of the rotating flange.

[0017] To achieve this object, the present invention adopts the following technical solutions:

[0018] A method for welding a rotary flange, based on the rotary flange welding tool as described above, comprises the following steps:

[0019] S1: abutting the top end surface of the base of the rotating flange against the first positioning surface, and making the top end surface of the base located at the middle position of the first positioning surface, and spot welding the base to the first positioning surface;

[0020] S2: abutting the rotating arm of the rotating flange against the second positioning surface, and making the two arm sides of the rotating arm respectively located on the two second edges, so that the part of the rotating arm that is not abutting against the second positioning surface contacts the base and is spot welded;

[0021] S3: inserting the adjustment plate on the rotating flange into the gap between the top end surface of the rotating arm and the third positioning surface, and spot welding the adjustment plate to the top end surface of the rotating arm;

[0022] S4: re-welding the spot welding portion between the base and the rotating arm and the spot welding portion between the adjustment plate and the top end surface of the rotating arm.

[0023] Preferably, the welding method of the rotating flange further comprises the following steps:

[0024] The spot-welded portion of the base and the first positioning surface is separated by a grinder, and the entire rotating flange is removed from the rotating flange welding tooling.

[0025] The beneficial effects of the present invention are:

[0026] A plurality of support members are arranged at intervals between two relatively arranged positioning members, and the plurality of support members are arranged at the edges of the two positioning members. The positioning members are polygonal plate-shaped structures, and the first edges of the two positioning members form a first positioning surface with the two adjacent support members, the second edges of the two positioning members form a second positioning surface with the support members, and the third edges of the two positioning members form a third positioning surface with the support members; when positioning and welding the rotating flange, the top end surface of the base of the rotating flange is abutted against the first positioning surface, and the top end surface of the base is located at the middle position of the first positioning surface, and the base is spot welded to the first positioning surface to fix the base and prevent the base from sliding during subsequent welding; then the rotating arm of the rotating flange is abutted against the second positioning surface, and the two arm sides of the rotating arm are respectively located on the two second edges, so that the rotating arm that is not in contact with the second positioning surface The part where the positioning surfaces abut is in contact with the base and spot welded to locate the positional relationship between the rotating arm and the base; finally, the adjusting plate on the rotating flange is inserted into the gap between the top end surface of the rotating arm and the third positioning surface, and the adjusting plate is spot welded to the top end surface of the rotating arm to locate the positional relationship between the adjusting plate and the rotating arm; the various parts of the rotating flange are precisely positioned before welding, which can ensure the position and size of the rotating flange and reduce the difficulty of welding; at the same time, the shapes and sizes of the two positioning parts are the same, and the lengths of each support part are the same, so that the two positioning parts can be parallel to each other, so that the first positioning surface, the second positioning surface and the third positioning surface formed are all coplanar, which can avoid eccentricity of the rotating flange during rotation, so that the yield rate of the rotating flange formed by the rotating flange welding tooling is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the rotary flange welding tool provided by the present invention;

[0028] Figure 2 The figure is a schematic diagram of assembling the rotary flange welding tool and the rotary flange provided by the present invention.

[0029] In the figure:

[0030] 1-rotating flange welding tool; 11-positioning piece; 12-supporting piece; 13-first edge; 131-second notch; 15-second edge; 17-third edge; 171-third notch; 19-first notch;

[0031] 2-rotating flange; 21-base; 22-rotating arm; 23-adjusting plate. DETAILED DESCRIPTION

[0032] In order to make the technical problem solved by the present invention, the technical solution adopted and the technical effect achieved more clearly, the technical solution of the present invention is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the structure or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0036] Embodiment 1

[0037] This embodiment proposes a rotating flange welding tool, which can accurately position the rotating flange so that the position relationship of the rotating flange formed by welding is better. At the same time, no eccentricity will occur during the rotation process, which can increase the yield of the rotating flange formed by welding.

[0038] Specifically, Figure 1 and Figure 2As shown, the rotary flange welding tool 1 includes two positioning members 11 arranged opposite to each other. The shapes and sizes of the two positioning members 11 are the same, that is, the two positioning members 11 are of the same structure; and a plurality of support members 12 are arranged at intervals between the two positioning members 11, and the plurality of support members 12 are arranged in an annular manner at each edge of the two positioning members 11, that is, the two ends of the support member 12 are respectively arranged at the two edges of the two positioning members 11, and the length of each support member 12 is the same; the positioning member 11 is a polygonal plate-like structure, and the first edges 13 of the two positioning members 11 form a first positioning surface (not shown in the figure) with the two adjacent support members 12, and the first positioning surface is used to position the base 21 of the rotary flange 2 and to be in contact with the base 21. The seat 21 is spot welded so that the base 21 can remain stationary during the subsequent welding process to provide a position reference for welding; the second edges 15 of the two positioning members 11 and the support member 12 form a second positioning surface (not shown in the figure), and the second positioning surface is used to position the rotating arm 22 of the rotating flange 2, so that the part of the rotating arm 22 located on the second positioning surface can contact the base 21, thereby positioning the position relationship between the rotating arm 22 and the base 21; the third edges 17 of the two positioning members 11 and the support member 12 form a third positioning surface (not shown in the figure), and the third positioning surface is used to position the adjustment plate 23 of the rotating flange 2. Among them, the structure of the rotating flange 2 is a common flange structure in the prior art, so the various structures and functions of the rotating flange 2 are not described in detail here.

[0039] A plurality of support members 12 are arranged at intervals between two oppositely arranged positioning members 11, and the plurality of support members 12 are arranged around the edges of the two positioning members 11. The positioning members 11 are polygonal plate-shaped structures, and the first edges 13 of the two positioning members 11 form a first positioning surface with the two adjacent support members 12, the second edges 15 of the two positioning members 11 form a second positioning surface with the support members 12, and the third edges 17 of the two positioning members 11 form a third positioning surface with the support members 12; when positioning and welding the rotating flange 2, the top end surface of the base 21 of the rotating flange 2 is abutted against the first positioning surface, and the top end surface of the base 21 is located at the middle position of the first positioning surface, and the base 21 is spot welded to the first positioning surface to fix the base 21, so as to prevent the base 2 1 slips during the subsequent welding process; then the rotating arm 22 of the rotating flange 2 is abutted against the second positioning surface, and the two arm sides of the rotating arm 22 are respectively located on the two second edges 15, so that the part of the rotating arm 22 that is not abutted against the second positioning surface is in contact with the base 21 and spot welded to locate the positional relationship between the rotating arm 22 and the base 21; finally, the adjusting plate 23 on the rotating flange 2 is inserted into the gap between the top end surface of the rotating arm 22 and the third positioning surface, and the adjusting plate 23 is spot welded to the top end surface of the rotating arm 22 to locate the positional relationship between the adjusting plate 23 and the rotating arm 22; it is achieved that each part of the rotating flange 2 is accurately positioned before welding, which can ensure the position and size of the rotating flange 2 and reduce the difficulty of welding.

[0040] At the same time, by making the shapes and sizes of the two positioning members 11 the same, and the lengths of each support member 12 the same, the two positioning members 11 can be parallel to each other, so that the two edges arranged oppositely on the two positioning members 11 can be relatively parallel, so that the first positioning surface, the second positioning surface and the third positioning surface formed are all coplanar, so that the eccentricity of the rotating flange 2 can be avoided when rotating, so that the yield rate of the rotating flange 2 formed by the rotating flange welding tool 1 is high. Among them, the size and shape of the positioning member 11 are matched with the size and shape of the rotating flange 2 to be welded, so that the rotating flange 2 can fit more closely with the rotating flange welding tool 1. In this embodiment, the positioning member 11 is fixed to the support member 12 by welding. In this embodiment, the support member 12 is a rod-shaped structure. In this embodiment, the number of the support members 12 is set to six. In other embodiments, the number of the support members 12 can also be set to other numbers. The specific number of settings needs to be determined according to the specific shape structure of the positioning member 11 and the support needs between the two positioning members 11.

[0041] Furthermore, if Figure 1As shown, the second edge 15 is arranged adjacent to the third edge 17, and a first notch 19 is arranged at the connection between the second edge 15 and the third edge 17, and the opening direction of the first notch 19 is close to the second edge 15 / the third edge 17. By arranging the first notch 19 at the connection between the second edge 15 and the third edge 17, it is possible to avoid interference between the corners on the rotating arm 22 and the adjusting plate 23 and the second edge 15 or the third edge 17, and it is possible to avoid the corners on the rotating arm 22 and the adjusting plate 23 from hitting the second edge 15 or the third edge 17, and it is possible to better protect the rotating flange 2 from damage. In this embodiment, the first notch 19 is an arc-shaped notch. The arc-shaped notch can better protect the rotating flange 2 from damage.

[0042] Specifically, Figure 1 As shown, a second notch 131 is provided on each of the two first edges 13, and the line between the two second notches 131 passes through the center of the first circular hole on the base 21 for installing the reducer; and a third notch 171 is provided on each of the two third edges 17, and the line between the two third notches 171 passes through the center of the second circular hole on the adjustment plate 23 for installing the reducer. By providing the second notch 131 and the third notch 171, the installation positions of the first circular hole and the second circular hole can be better verified, and the eccentricity of the rotating flange 2 during rotation can be better avoided. In this embodiment, the second notch 131 and the third notch 171 are both arc-shaped openings.

[0043] Embodiment 2

[0044] In this embodiment, a welding method for a rotating flange based on the rotating flange welding tool in the first embodiment is proposed, which includes the following steps:

[0045] S1: Abutting the top end surface of the base 21 of the rotating flange 2 against the first positioning surface, and making the top end surface of the base 21 located at the middle position of the first positioning surface, and spot welding the base 21 to the first positioning surface;

[0046] S2: The rotating arm 22 of the rotating flange 2 is brought into contact with the second positioning surface, and the two arm sides of the rotating arm 22 are respectively located on the two second edges 15, so that the portion of the rotating arm 22 that is not in contact with the second positioning surface is in contact with the base 21 and spot welded;

[0047] S3: inserting the adjustment plate 23 on the rotating flange 2 into the gap between the top surface of the rotating arm 22 and the third positioning surface, and spot welding the adjustment plate 23 to the top surface of the rotating arm 22;

[0048] S4: The spot welding portion between the base 21 and the rotating arm 22 and the spot welding portion between the adjustment plate 23 and the top end surface of the rotating arm 22 are welded again.

[0049] Among them, the welding method of the rotating flange also includes the following steps: separating the base 21 and the first positioning surface spot-welded part by a grinder, and removing the entire rotating flange welding tool 1 from the welded rotating flange 2 to form a complete and independent rotating flange 2.

[0050] The specific steps of the welding method of the rotating flange in this embodiment are as follows: first, the top end surface of the base 21 of the rotating flange 2 is tightly abutted against the first positioning surface, and the top end surface of the base 21 is located in the middle position of the first positioning surface; at the same time, the connecting line between the two second notches 131 on the two first edges 13 passes through the center of the first circular hole on the base 21 for installing the reducer; and the base 21 is spot welded on the first positioning surface to prevent the base 21 from sliding relative to the first positioning surface, thereby ensuring the accuracy of the positional relationship of the base 21 relative to the first positioning surface.

[0051] Then, the rotating arm 22 of the rotating flange 2 is tightly abutted against the second positioning surface, and the two arm sides of the rotating arm 22 are respectively located on the two second edges 15, so that the part of the rotating arm 22 that is not abutted against the second positioning surface can contact the base 21, and the contacting parts of the two are spot welded, so as to ensure the accuracy of the positional relationship of the rotating arm 22 relative to the base 21; then the adjusting plate 23 on the rotating flange 2 is inserted into the gap between the top end surface of the rotating arm 22 and the third positioning surface, so that the corners formed by the adjacent edges of the adjusting plate 23 or the rotating arm 22 can be located in the first notch 19 to avoid bumping against the corners; at the same time, the connecting line between the two third notches 171 on the two third edges 17 can pass through the center of the second circular hole on the adjusting plate 23 for installing the reducer; and the adjusting plate 23 is welded to the top end surface of the rotating arm 22 by spot welding; thereby completing the positioning work of the positional relationship between the base 21, the rotating arm 22 and the adjusting plate 23 on the rotating flange 2.

[0052] Finally, the spot welding parts between the base 21 and the rotating arm 22 and the spot welding parts between the adjusting plate 23 and the top surface of the rotating arm 22 are welded again for reinforcement, so that the base 21, the rotating arm 22 and the adjusting plate 23 can be welded to form a complete rotating flange 2; then the spot welding parts of the base 21 and the first positioning surface are ground and separated by a grinder to remove the entire rotating flange 2 formed by welding from the rotating flange welding tooling 1 to form a complete and independent rotating flange 2.

[0053] Among them, due to manufacturing requirements and processing needs, it is also necessary to perform high-temperature annealing heat treatment on the rotating flange 2 formed by welding, and the rotating flange 2 after heat treatment is positioned again on the rotating flange welding tooling 1 so that the rotating flange 2 can be inspected; so that the base 21, the rotating arm 22 and the adjusting plate 23 of the rotating flange 2 can be tightly fitted with the first positioning surface, the second positioning surface and the third positioning surface on the rotating flange welding tooling 1 respectively, and the rotating arm 22 is centered left and right relative to the base 21; and at the same time, the line between the two second notches 131 on the two first edges 13 passes through the center of the first circular hole on the base 21 for installing the reducer, and the line between the two third notches 171 on the two third edges 17 can pass through the center of the second circular hole on the adjusting plate 23 for installing the reducer; so as to verify the rotating flange 2 after heat treatment again, so as to facilitate the next step of processing of the qualified rotating flange 2 after heat treatment.

[0054] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. A rotary flange welding tool, characterized in that: include: Two positioning members (11) are arranged opposite to each other, the two positioning members (11) have the same shape and size, and a plurality of support members (12) are arranged between the two positioning members (11) at intervals, the plurality of support members (12) are arranged around the edges of the two positioning members (11), and the length of each support member (12) is the same; the positioning member (11) is a polygonal plate-like structure, and the first edges (13) of the two positioning members (11) form a first positioning member with the two adjacent support members (12). The first positioning surface is used to position a base (21) of the rotating flange (2) and is spot welded to the base (21); the second edges (15) of the two positioning members (11) and the support member (12) form a second positioning surface; the second positioning surface is used to position a rotating arm (22) of the rotating flange (2); the third edges (17) of the two positioning members (11) and the support member (12) form a third positioning surface; the third positioning surface is used to position an adjustment plate (23) of the rotating flange (2); A second notch (131) is provided on each of the two first edges (13), and a line connecting the two second notches (131) passes through the center of a first circular hole on the base (21) for mounting a reducer; A third notch (171) is provided on each of the two third edges (17), and a line connecting the two third notches (171) passes through the center of a second circular hole on the adjustment plate (23) for mounting a reducer; The support member (12) is a rod-shaped structure.

2. The rotary flange welding tool as claimed in claim 1, characterized in that: The second edge (15) is arranged adjacent to the third edge (17), and a first notch (19) is arranged at the connection between the second edge (15) and the third edge (17).

3. The rotary flange welding tool as claimed in claim 2, characterized in that: The first notch (19) is an arc-shaped notch.

4. The rotary flange welding tool as claimed in claim 1, characterized in that: The second notch (131) and the third notch (171) are both arc-shaped openings.

5. The rotary flange welding tool as claimed in claim 1, characterized in that: The positioning member (11) and the supporting member (12) are fixed by welding.

6. A method for welding a rotary flange, based on the rotary flange welding tool as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: S1: abutting the top end surface of the base (21) of the rotating flange (2) against the first positioning surface, and making the top end surface of the base (21) located at the middle position of the first positioning surface, and spot welding the base (21) to the first positioning surface; S2: The rotating arm (22) of the rotating flange (2) is abutted against the second positioning surface, and the two arm sides of the rotating arm (22) are respectively located on the two second edges (15), so that the portion of the rotating arm (22) that is not abutted against the second positioning surface is in contact with the base (21) and spot welded; S3: inserting the adjustment plate (23) on the rotating flange (2) into the gap between the top end surface of the rotating arm (22) and the third positioning surface, and spot welding the adjustment plate (23) to the top end surface of the rotating arm (22); S4: re-welding the spot welding portion between the base (21) and the rotating arm (22) and the spot welding portion between the adjustment plate (23) and the top end surface of the rotating arm (22).

7. The welding method of a rotating flange according to claim 6, characterized in that: The welding method of the rotating flange further comprises the following steps: The spot-welded portion of the base (21) and the first positioning surface is separated by a grinder, and the entire rotating flange (2) is removed from the rotating flange welding tool (1).

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