Flange welding fixing tool based on automatic circular seam welding machine

Abstract

A flange welding fixing tool based on an automatic circular seam welding machine comprises an extended clamping end and a flange fixing disc, the extended clamping end is in a hollow cylinder shape, a plurality of second fixing holes are formed in the end, close to the flange fixing disc, of the extended clamping end along the annular face, and a plurality of circles of hole positions are formed in the flange fixing disc. The hole site on the innermost side of the plurality of circles of hole sites is a first fixing hole, the outer circles of the plurality of circles of hole sites are mounting holes, the first fixing hole and the second fixing hole are matched in size and position, the extended clamping end and the flange fixing disc are fixed through a bolt, and the bolt penetrates through the first fixing hole and the second fixing hole to be fixed. According to the utility model, the existing automatic circular seam welding machine can be transformed to fix the flange, and the flange welding device is suitable for welding flanges of various specifications, and is simple in structure and simple and convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of flange welding fixing tooling, in particular to a flange welding fixing tooling based on an automatic circumferential seam welding machine. Background Art

[0002] Flange welding is an important way to connect pipelines. It is achieved by fixing two pipelines, pipe fittings or equipment on their respective welds, adding flange gaskets between the two welds, and fastening them together with bolts. Flange welding is easy to use and can withstand greater pressure. Manual welding is mostly used for flange welding in existing pipeline manufacturing. However, for such regular circumferential seams, the efficiency of manual welding is far less than expected, so automatic circumferential seam welding equipment is mostly used. During welding, the workpiece is clamped and rotated by a rotating worktable, and the position of the welding gun is relatively fixed to achieve automatic welding of the circumferential seam. However, due to the positional relationship between the rotating worktable and the welding gun, and the fact that the flange has no extra clamping part, the welding gun cannot be completely aligned with the weld. At the same time, clamping the pipe section is prone to deformation of the pipe section, affecting subsequent installation and use.

[0003] Chinese patent document CN117718629A discloses a positioning device for a pipe flange of a pressure vessel, comprising a lifting device, a fixing seat, a mounting assembly, a flange hole positioning assembly and a coaxial positioning assembly, wherein the fixing seat is fixedly arranged on the lifting device, and a support column is connected to the fixing seat; a rotating shaft is connected to the support column, and a mounting assembly and a positioning assembly for mounting the flange are arranged on the rotating shaft, and the coaxial positioning assembly is coaxially fixedly connected with the rotating shaft, and the device can improve the efficiency of pipe flange installation and positioning, thereby improving the efficiency of pipe flange welding. The utility model proposes a flange welding fixing tool based on an automatic circumferential seam welding machine. Utility Model Content

[0004] The utility model aims to provide a flange welding fixing tool based on an automatic circumferential seam welding machine, which can transform the existing automatic circumferential seam welding machine to fix the flange and is suitable for welding flanges of various specifications, has a simple structure and is easy to operate.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A flange welding fixing tool based on an automatic circumferential seam welding machine includes an extended clamping end and a flange fixing plate. The extended clamping end is a hollow cylindrical tube, which is connected to the automatic circumferential seam welding machine. The extended clamping end is close to the flange fixing plate at one end and is provided with a plurality of fixing holes 2 along the annular surface. The flange fixing plate is provided with a plurality of fixing holes 1 corresponding to the positions of the fixing holes 2. The flange fixing plate is also provided with a plurality of mounting holes for connecting the flange to be welded. The extended clamping end and the flange fixing plate are fixed by bolts, and the bolts are fixed through the fixing holes 1 and 2.

[0007] As a preferred technical solution, the flange fixing plate is fixedly connected to the flange via a fixing member, and the fixing member includes bolts and nuts, and the bolts are passed through the flange holes and the mounting holes and then tightened by the nuts.

[0008] Compared with the prior art, the utility model has the following beneficial effects:

[0009] 1. In the utility model, the flange welding fixture provides an extended clamping end for the automatic circumferential seam welding machine, which is convenient for the rotating workbench to clamp and fix the device, and the flange fixing plate can fix the flange, which is convenient for automatic welding of the welding gun.

[0010] 2. In the present invention, a plurality of mounting holes are provided on the flange fixing plate, which is suitable for welding flanges of various specifications, and the mounting holes on the flange fixing plate can be processed according to the specifications of the flanges.

[0011] 3. In the utility model, the flange welding fixture has a simple structure, is easy to use and has a low cost, and can directly transform the existing automatic circumferential seam welding machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings:

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a side view of the utility model;

[0015] Figure 3 This is the AA cross-sectional view of the utility model;

[0016] The reference numerals are as follows:

[0017] Extended clamping end 1, flange fixing plate 2, fixing hole one 3, mounting hole 4, fixing hole two 5. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0020] In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, if the terms "set", "install", and "connect" appear, they 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 it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0021] Example

[0022] like Figure 1-3 As shown, a flange welding fixing tool based on an automatic circumferential seam welding machine includes an extended clamping end 1 and a flange fixing plate 2. The extended clamping end 1 is a hollow cylindrical tube, which is connected to the automatic circumferential seam welding machine. The end of the extended clamping end 1 close to the flange fixing plate 2 is provided with a plurality of fixing holes 5 along the annular surface. The flange fixing plate 2 is provided with a plurality of fixing holes 3 corresponding to the positions of the fixing holes 2. The flange fixing plate 2 is also provided with a plurality of mounting holes 4 for connecting the flange to be welded. The extended clamping end 1 and the flange fixing plate 2 are fixed by bolts, and the bolts pass through the fixing holes 1 3 and the fixing holes 2 5 for fixing.

[0023] It is worth mentioning that the extended clamping end 1 is used to connect with the automatic circumferential seam welding machine. The rotating worktable of the automatic circumferential seam welding machine clamps the extended clamping end 1 through a clamping pliers. The flange fixing plate 2 is used to fix the flange to facilitate flange welding. The mounting hole 4 is used to fix the flange on the flange fixing plate 2. The extended clamping end 1 is connected to the flange fixing plate 2 through the set fixing hole 1 3 and the fixing hole 2 5.

[0024] In particular, the size of the flange fixing plate 2 is not fixed and can be replaced according to the specifications of the flange. The positions and number of the mounting holes 5 on the flange fixing plate 2 are also not fixed and can be processed according to the specifications of the flange holes.

[0025] In some feasible embodiments, the flange fixing plate 2 is fixedly connected to the flange via a fixing member, and the fixing member includes a bolt and a nut, and the bolt passes through the flange hole and the mounting hole 4 and is tightened by the nut.

[0026] When in use, first fix the extended clamping end 1 of the fixing fixture on the rotating workbench of the automatic circumferential seam welding machine through a clamp, then place the flange and the flange fixing plate 2 coaxially, align the flange hole with the mounting hole 5, and use a fixing piece to fix the flange on the flange fixing plate 2, wherein the flange and the pipeline to be welded are connected in advance by spot welding. After the flange is fixed, start the automatic circumferential seam welding machine, and the rotating workbench of the automatic circumferential seam welding machine will drive the fixing fixture to rotate, and then drive the flange to rotate, and aim the welding gun at the joint between the flange and the pipeline. When the fixing fixture drives the flange to rotate, the welding gun is aimed at the joint for welding to complete the welding of the flange.

[0027] In addition, it should be understood that although this specification is described in accordance with the implementation methods, not every implementation method contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art. So far, each embodiment of the present disclosure has been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here. The scope of the present disclosure is defined by the attached claims.

Claims

1. A flange welding fixture based on an automatic circumferential seam welding machine, characterized in that: The invention comprises an extended clamping end (1) and a flange fixing plate (2), wherein the extended clamping end (1) is in the shape of a hollow cylindrical tube and is connected to an automatic circumferential seam welding machine. A plurality of fixing holes (5) are arranged along an annular surface at one end of the extended clamping end (1) close to the flange fixing plate (2), and a plurality of fixing holes (3) corresponding to the positions of the fixing holes (2) are arranged on the flange fixing plate (2). The flange fixing plate (2) is also provided with a plurality of mounting holes (4) for connecting the flange to be welded. The extended clamping end (1) and the flange fixing plate (2) are fixed by bolts, and the bolts pass through the fixing holes (3) and the fixing holes (5) for fixing.

2. According to claim 1, a flange welding fixture based on an automatic circumferential seam welding machine is characterized in that: The flange fixing plate (2) is fixedly connected to the flange via a fixing member, wherein the fixing member comprises a bolt and a nut, wherein the bolt passes through the flange hole and the mounting hole (4) and is then tightened by the nut.

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