Multi-branch pipe fitting welding auxiliary device

Abstract

The utility model discloses a multi-branch pipe fitting welding auxiliary device, which belongs to the technical field of welding auxiliary equipment, and comprises a fixing plate, a positioning frame and a positioning bolt, the fixing plate is provided with a limiting groove corresponding to a pipe fitting, the positioning frame comprises a positioning plate and more than two supporting legs, the positioning plate is provided with a through hole corresponding to a connecting hole on the pipe fitting, and the positioning plate is provided with a through hole corresponding to the connecting hole on the pipe fitting. Threaded holes are formed in the branch pipes, and positioning bolts connect the branch pipes to the positioning frame through the through holes. The auxiliary positioning device can be used for carrying out auxiliary positioning on a pipe fitting to be welded and a plurality of branch pipes, so that the welding efficiency and the welding quality are improved; the branch pipes can be positioned through the through holes and the positioning bolts, the branch pipes are prevented from running during welding, and the length uniformity of the welded branch pipes is guaranteed; the fixing plate can fix the pipe fitting through the limiting groove and the limiting column and can fix the positioning plate through the side plate, and the stability during welding is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding auxiliary equipment, and in particular relates to a multi-branch pipe welding auxiliary device. Background Art

[0002] When welding multi-branch pipe fittings, a main pipe fitting is usually used. Multiple connecting holes are opened on the pipe fitting. Branch pipes are welded to the connecting holes and connected to the main pipe fitting by welding to form a multi-branch pipe fitting. However, there are still some problems in the welding of existing branch pipes and pipe fittings. During welding, the branch pipe is placed on the pipe fitting in a single clamping manner, which is easy to move during welding, causing deviations in the positions of different branch pipes. The welding quality is unstable during welding, and different welding positions lead to different lengths of branch pipes, which affects the subsequent use of the multi-branch pipe fittings. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a multi-branch pipe fitting welding auxiliary device to effectively position the pipe fittings so as to improve the welding efficiency and welding quality of the multi-branch pipe fittings.

[0004] Technical solution: In order to solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0005] A multi-branch pipe welding auxiliary device is used to position a branch pipe and a pipe fitting. The pipe fitting is provided with a plurality of connection holes corresponding to the branch pipes. The device comprises a fixing plate for limiting the rolling of the pipe fitting, a positioning frame for being placed on the pipe fitting, and a positioning bolt for connecting with the branch pipe. The fixing plate is provided with a limiting groove corresponding to the pipe fitting. The positioning frame comprises a positioning plate and more than two legs. The positioning plate is provided with a through hole corresponding to the connection hole on the pipe fitting. The branch pipe is provided with a threaded hole. The positioning bolt connects the branch pipe to the positioning frame through the through hole.

[0006] Furthermore, the through hole includes a first-stage hole and a second-stage hole, the second-stage hole is located on a side of the positioning plate close to the pipe, and the aperture of the second-stage hole is larger than the aperture of the first-stage hole.

[0007] Furthermore, the head diameter of the positioning bolt is larger than the hole diameter of the first stage hole.

[0008] Furthermore, the pipe fitting is provided with a limiting hole, and the fixing plate is provided with a limiting column corresponding to the limiting hole.

[0009] Furthermore, the limiting column is detachably connected to the fixing plate.

[0010] Furthermore, the fixing plate is connected to a side plate, and the side plate is provided with limiting holes corresponding to the positioning plate.

[0011] Furthermore, an anti-slip layer is provided on the inner wall of the limiting hole.

[0012] Furthermore, the side plate is detachably connected to the fixing plate.

[0013] Furthermore, the supporting leg is provided with an arc-shaped groove corresponding to the pipe fitting.

[0014] Beneficial effects: Compared with the prior art, the utility model has the following advantages:

[0015] 1. By setting the fixing plate, positioning frame and positioning bolts, the pipes and multiple branches waiting for welding can be positioned auxiliaryly, thus improving the welding efficiency and welding quality;

[0016] 2. Through holes are set on the positioning plate, including the first-stage holes and the second-stage holes. The through holes and positioning bolts can position the branch pipes to prevent the branch pipes from moving during welding and ensure that the length of the branch pipes is uniform after welding;

[0017] 3. The fixing plate can fix the pipe fittings through the limiting grooves and limiting columns, and the positioning plate can be fixed through the side plate to ensure stability during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the device according to an embodiment of the present invention;

[0019] Figure 2 It is a schematic diagram of the pipe fitting structure;

[0020] Figure 3 It is a schematic diagram of the branch pipe structure;

[0021] Figure 4 1. It is a schematic diagram of the top view of the positioning frame structure;

[0022] Figure 5 is a schematic diagram of the side structure of the device of the embodiment;

[0023] Figure 6 is a schematic diagram of a cross-sectional structure of a through hole in an embodiment;

[0024] Figure 7 It is a schematic diagram of the cross-sectional structure of the connection between the positioning bolt and the branch pipe in the embodiment. DETAILED DESCRIPTION

[0025] The present invention will be further explained below in conjunction with specific embodiments. The embodiments are implemented based on the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0026] like Figure 1 , Figure 2 and Figure 3As shown, the utility model is a multi-branch pipe welding auxiliary device, which is used to position multiple branch pipes 9 and pipe fittings 8 to facilitate subsequent welding connection of the branch pipes 9 and pipe fittings 8. The pipe fitting 8 is a hollow cylinder, and the branch pipe 9 is a small hollow cylinder. The upper end of the branch pipe 9 is hexagonal, and the upper end of the branch pipe 9 is provided with an internal threaded hole. The pipe fitting 8 is provided with multiple connecting holes 81 corresponding to the branch pipe 9, and the connecting holes 81 are arranged at equal distances on the pipe fitting 8. During welding, the lower end of the branch pipe 9 is welded to the pipe fitting 8 at the connecting hole 81, so that the multiple branch pipes 9 form multiple branches of the pipe fitting 8.

[0027] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the device includes a fixing plate 1, a positioning frame 2 and a positioning bolt 3. The fixing plate 1 is provided with a limiting groove 11 corresponding to the pipe fitting 8. When in use, the pipe fitting 8 is placed on the limiting groove 11 to prevent the pipe fitting 8 from rolling during welding. The pipe fitting 8 is provided with a limiting hole 82, and the fixing plate 1 is provided with a limiting column 101 corresponding to the limiting hole 82. When the pipe fitting 8 is placed on the limiting groove 11, the limiting column 101 is inserted into the limiting hole 82 to fix the pipe fitting 8. The limiting column 101 is detachably connected to the fixing plate 1 by a threaded connection, so that different limiting columns 101 can be replaced or not used. The diameter of the threaded part at the lower end of different limiting columns 101 remains unchanged, and the diameter of the upper end changes, so that limiting columns 101 with different diameters can be replaced according to different limiting holes 82.

[0028] like Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the positioning frame 2 is placed on the pipe fitting 8 when in use. The positioning frame 2 includes a positioning plate 21 and two legs 22. The positioning plate 21 is a rectangular plate. The legs 22 are arranged perpendicular to the positioning plate 21. The legs 22 are provided with arc-shaped grooves corresponding to the pipe fitting 8, so that the positioning frame 2 can be stably placed on the pipe fitting 8. The positioning plate 21 is provided with a through hole 4 corresponding to the connecting hole 81 on the pipe fitting 8. When the positioning frame 2 is placed on the pipe fitting 8, the through hole 4 is located above the corresponding connecting hole 81. The through hole 4 includes a first-stage hole 41 in the upper part and a second-stage hole 42 in the lower part. When the positioning frame 2 is placed on the pipe fitting 8, the second-stage hole 42 is located on the side of the positioning plate 21 close to the pipe fitting 8. The first-stage hole 41 is a circular hole. The shape of the second-stage hole 42 corresponds to the shape of the upper end of the branch pipe 9. The second-stage hole 42 is a hexagonal hole, and the second-stage hole The aperture of 42 is larger than that of the first-stage hole 41. When in use, the branch pipe 9 is inserted into the second-stage hole 42 from below, and the positioning bolt 3 is inserted into the first-stage hole 41 from above. The head diameter of the positioning bolt 3 is larger than the aperture of the first-stage hole 41. The external thread of the positioning bolt 3 corresponds to the internal threaded hole at the upper end of the branch pipe 9. The positioning bolt 3 is threadedly connected to the branch pipe 9, so that the positioning bolt 3 connects the branch pipe 9 to the positioning frame 2 through the through hole 4. Multiple branch pipes 9 are fixed by multiple positioning bolts 3, so that the distances from multiple branch pipes 9 to the pipe fitting 8 are fixed. After welding, there will be no situation where multiple branch pipes 9 are of different lengths. At the same time, since the branch pipe 9 is fixed by the positioning bolt 3, the lower end of the branch pipe 9 is in contact with the connecting hole 81 but is not directly placed on the connecting hole 81, and will not run during welding, thereby ensuring the molding quality of the branch pipe 9 and the pipe fitting 8 after welding, and the welding effect is good.

[0029] like Figure 1 As shown, a side plate 5 is connected to one end of the fixing plate 1, and the side plate 5 is detachably connected to the fixing plate 1 by bolts. When the positioning frame 2 needs to be further fixed, the side plate 5 can be connected to the fixing plate 1. A limiting hole 51 corresponding to the positioning plate 21 is provided on the side plate 5. The limiting hole 51 is a rectangular hole. An anti-slip layer 501 is provided on the inner wall of the limiting hole 51. The anti-slip layer 501 is made of rubber material. When the positioning frame 2 is placed on the pipe fitting 8, one end of the positioning plate 21 is inserted into the limiting hole 51. The anti-slip layer 501 can limit the left and right position of the positioning plate 21. Moving the positioning plate 21 left and right can fine-tune the position of the positioning plate 21. The limiting hole 51 can limit the left and right position of the positioning frame 2 and prevent the positioning frame 2 from slipping off the pipe fitting 8, thereby improving the stability of the positioning frame 2 during welding operations.

[0030] After welding, the positioning bolts 3 on each branch pipe 9 are removed, and the positioning frame 2 is removed, so as to obtain a multi-branch pipe fitting after the branch pipes 9 and the pipe fittings 8 are welded.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A multi-branch pipe welding auxiliary device, used for positioning the branch pipe and the pipe fitting, the pipe fitting is provided with a plurality of connection holes corresponding to the branch pipes, characterized in that: The invention comprises a fixing plate (1) for limiting the rolling of the pipe, a positioning frame (2) for being placed on the pipe, and a positioning bolt (3) for being connected to the branch pipe, wherein the fixing plate (1) is provided with a limiting groove (11) corresponding to the pipe, the positioning frame (2) comprises a positioning plate (21) and two or more supporting legs (22), the positioning plate (21) is provided with a through hole (4) corresponding to the connecting hole on the pipe, the branch pipe is provided with a threaded hole, and the positioning bolt (3) connects the branch pipe to the positioning frame (2) through the through hole (4).

2. The multi-branch pipe welding auxiliary device according to claim 1, characterized in that: The through hole (4) comprises a first-stage hole (41) and a second-stage hole (42); the second-stage hole (42) is located on a side of the positioning plate (21) close to the pipe; the diameter of the second-stage hole (42) is larger than the diameter of the first-stage hole (41).

3. The multi-branch pipe welding auxiliary device according to claim 2, characterized in that: The head diameter of the positioning bolt (3) is larger than the hole diameter of the first stage hole (41).

4. The multi-branch pipe welding auxiliary device according to claim 1, characterized in that: The pipe is provided with a limiting hole, and the fixing plate (1) is provided with a limiting column (101) corresponding to the limiting hole.

5. The multi-branch pipe welding auxiliary device according to claim 4, characterized in that: The limiting column (101) is detachably connected to the fixing plate (1).

6. The multi-branch pipe welding auxiliary device according to claim 1, characterized in that: The fixing plate (1) is connected to a side plate (5), and the side plate (5) is provided with a limiting hole (51) corresponding to the positioning plate (21).

7. The multi-branch pipe welding auxiliary device according to claim 6, characterized in that: The inner wall of the limiting hole (51) is provided with an anti-slip layer (501).

8. The multi-branch pipe welding auxiliary device according to claim 6, characterized in that: The side plate (5) is detachably connected to the fixing plate (1).

9. The multi-branch pipe welding auxiliary device according to claim 1, characterized in that: The supporting leg (22) is provided with an arc-shaped groove corresponding to the pipe.

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