CN209886870U - Welding device for straight seam steel pipe - Google Patents

Abstract

The utility model relates to the field of steel pipe production equipment, in particular to a welding device for straight seam steel pipes. It includes a frame, a working panel arranged on the frame, and a welding assembly slidably arranged on the working panel; a positioning groove corresponding to the welding seam on the straight seam steel pipe to be welded is opened on the working panel, and the welding assembly includes a sliding assembly on the working panel. The sliding plate in the positioning groove, the upper end of the sliding plate is distributed above the positioning groove and fixed with a welding gun, the lower end of the sliding groove is distributed under the positioning groove and fixed with a nut, and the rack is provided with a lead screw and a nut installed in cooperation with the nut. The motor that drives the screw to rotate. The utility model does not occupy too much space inside the steel pipe in the welding of the inner welding seam of the straight seam steel pipe, avoids the influence of space limitation, and is especially suitable for the welding production of the small diameter straight seam steel pipe.

Description

A welding device for straight seam steel pipe

technical field

The utility model relates to the field of steel pipe production equipment, in particular to a welding device for straight seam steel pipes.

Background technique

In the production of straight seam steel pipes, firstly, steel strips or steel plates are used to deform into round, square or other shapes by bending, and then the welding seams formed on both sides of the steel plates or steel strips are welded and fixed, that is, the straight seam is obtained. Seam steel pipe. In some service conditions, it is required to weld the inside of the weld, which in turn requires the weld to be welded from the inside of the straight seam steel pipe. In the prior art, a seam tracking-pipe inner wall straight seam submerged arc welding machine has been developed for this welding requirement, but this device needs to occupy a large space inside the steel pipe, the use conditions are obviously limited by the space, and the research and development cost is high, which is not conducive to straight seam. Production and processing of seam steel pipes.

Utility model content

The utility model aims to provide a welding device for a straight seam steel pipe, which does not occupy too much space inside the steel pipe and avoids the influence of space limitation.

In order to solve the above technical problems, the technical scheme adopted by the present invention is as follows: a welding device for straight seam steel pipes includes a frame, a work panel arranged on the frame, and a welding assembly slidably arranged on the work panel; The working panel is provided with a positioning groove corresponding to the welding seam on the straight seam steel pipe to be welded. The welding assembly includes a sliding plate slidably arranged in the positioning groove. The upper end of the sliding plate is distributed above the positioning groove and is fixed with a welding torch. Nuts are arranged under the positioning grooves and fixed thereon, and a lead screw matched with the nut and a motor for driving the lead screw to rotate are arranged on the frame.

Preferably, the frame is provided with a positioning mechanism for clamping and fixing the straight seam steel pipe to be welded, the positioning mechanism includes a plurality of clamping supports fixed on the frame and located on both sides of the positioning groove, and each clamping support is provided with There are bolt holes perpendicular to the positioning grooves, and positioning bolts are matched and installed in the bolt holes, and a positioning pressure block is rotatably connected to one end of the positioning bolts toward the positioning grooves.

Preferably, the positioning pressure block is a rectangular block, so that the positioning pressure blocks located on both sides of the positioning groove cooperate with each other and are used for clamping the square steel pipe with straight seam to be welded.

Preferably, the positioning pressure block is a wedge-shaped block, so that the positioning pressure blocks located on both sides of the positioning groove cooperate with each other and are used to clamp the round steel pipe with straight seam to be welded.

Preferably, the two ends of the lead screw are respectively rotatably arranged in shaft seats fixed on the frame, and the motor is fixed to one of the shaft seats.

Preferably, a wire threading hole for connecting the welding wire to the welding torch is opened on the sliding plate.

beneficial effect

The utility model has a simple structure and is easy to implement. During the internal welding process of the straight seam steel pipe welding seam, only the end of the welding tongs extends into the inner cavity of the straight seam steel pipe, the inner space of the steel pipe is not excessively occupied, and the use conditions are less restricted. Suitable for internal welding of small diameter straight seam steel pipe welds.

The welding assembly in the utility model is driven by the motor-screw-nut, so that the welding assembly moves at a constant speed along the welding seam of the straight seam steel pipe, and the welding seam welding is completed during the movement, the operation is simple and the welding efficiency is high.

In a preferred embodiment of the present utility model, a positioning mechanism for positioning the straight seam steel pipe to be welded is also provided on the frame, and the positioning pressure block in the positioning mechanism can be rectangular, wedge-shaped or other shapes for clamping and fixing the square Steel pipes, round steel pipes or other types of steel pipes ensure the stability of the straight seam steel pipes to be welded during the welding process.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present utility model;

Fig. 2 is a three-dimensional schematic diagram of a square steel pipe with straight seam to be welded;

Fig. 3 is the top view of the workbench part in the utility model;

4 is a schematic three-dimensional structural diagram of a welding assembly part in the present invention;

Markings in the figure: 1. Positioning mechanism, 101, Positioning bolt, 102, Clamping support, 103, Positioning pressure block, 2. Steel pipe with straight seam to be welded, 3. Welding seam, 4. Positioning groove, 5. Welding assembly, 501 , Welding gun, 502, slide plate, 503, thread hole, 504, nut, 6, work panel, 7, axle seat, 8, motor, 9, lead screw, 10, frame.

Detailed ways

As shown in FIG. 1 , a welding device for straight seam steel pipes of the present invention includes a frame 10 , a work panel 6 arranged on the frame 10 , and a welding piece 5 slidably arranged on the work panel 6 .

As shown in FIG. 3 , the work panels 6 are rectangular and distributed horizontally on the frame 10 . Positioning grooves 4 distributed along the length direction of the work panel 6 are opened at the central position of the work panel 6 . The length of the positioning groove 4 is greater than the length of the straight seam steel pipe 2 to be welded, and is used to make the positioning groove 4 and the welding seam 3 on the straight seam steel pipe 2 to be welded (such as 2) alignment, so that the welding piece 5 slides along the length direction of the positioning groove 4, and the welding of the welding seam 3 is completed during the sliding process.

As shown in FIG. 4 , the welding piece 5 in the present invention includes a sliding plate 502 slidably arranged in the positioning groove 4 , and a welding torch 501 and a nut 504 respectively fixed on the sliding plate 502 . The middle part of the sliding plate 502 is slidingly matched with the positioning groove 4; the upper end of the sliding plate 502 is distributed above the positioning groove 4 and is fixed with the welding torch 501. The working end of the welding seam 3; the lower end of the chute is distributed under the positioning groove 4 and is fixed with a nut 504, and a lead screw 9 and a nut 504 are also provided on the frame 10 below the work panel 6. The motor 8 drives the screw 9 to rotate, and the rotation of the screw 9 drives the nut 504 - the sliding plate 502 - the welding torch 501 to slide synchronously, and the welding is completed during the sliding process. Both ends of the lead screw 9 are respectively rotatably arranged in the axle bases 7 fixed on the frame 10 , and the motor 8 is fixed to one of the axle bases 7 . A wire threading hole 503 for connecting the welding wire to the welding gun 501 is also opened on the sliding plate 502 .

In this embodiment, the frame 10 is further provided with a positioning mechanism 1 for clamping and fixing the straight seam steel pipe 2 to be welded. The positioning mechanism 1 includes a plurality of clamping supports 102 fixed on the frame 10 and located on both sides of the positioning groove 4. The clamping supports 102 are all provided with bolt holes perpendicular to the positioning groove 4, and the bolt holes are fitted with positioning holes. Bolt 101, one end of the positioning bolt 101 facing the positioning groove 4 is connected with a positioning pressure block 103, the positioning pressure block 103 is slidably arranged on the frame 10, and is rotatably connected with the positioning bolt 101, so that the positioning bolt 101 can be rotated to push or pull the positioning pressure The block 103 moves toward or away from the positioning groove 4 to achieve the purpose of clamping and fixing the straight seam steel pipe 2 to be welded.

The positioning pressure block 103 can be a rectangular block, so that the positioning pressure blocks 103 located on both sides of the positioning groove 4 cooperate with each other and are used for clamping the square steel pipe 2 with straight seam to be welded. The positioning pressure blocks 103 are also wedge-shaped blocks, so that the positioning pressure blocks 103 located on both sides of the positioning groove 4 cooperate with each other to form a V-shaped groove, and are used for clamping the circular straight seam steel pipe 2 to be welded. The positioning pressure block 103 can also be designed in other shapes, so as to be suitable for clamping and fixing the straight seam steel pipe 2 to be welded in other shapes.

In the specific implementation of the present invention, firstly, the straight seam steel pipe 2 to be welded is placed on the work panel 6 in the manner of the welding seam 3 to its positioning groove 4, and the straight seam steel pipe 2 to be welded is clamped and fixed by the positioning mechanism 1; Then the lead screw 9 is driven by the motor 8 to rotate to make the welding piece 5 slide out of the inner cavity of the straight seam steel pipe 2 to be welded as a whole; finally, the motor 8 is controlled to reverse, and the welding piece 5 is controlled to be complete along the length direction of the straight seam steel pipe 2 to be welded. It slides through the straight seam steel pipe 2 to be welded, and the welding of the welding seam 3 is completed by the welding torch 501 during the sliding process.

Claims (6)

1. A welding device for straight seam steel pipes, characterized in that it comprises a frame (10), a work panel (6) arranged on the frame (10), and a welding device slidably arranged on the work panel (6). The assembly (5); a positioning groove (4) corresponding to the welding seam (3) on the straight seam steel pipe (2) to be welded is opened on the working panel (6), and the welding assembly (5) comprises a positioning groove ( The sliding plate (502) in 4), the upper end of the sliding plate (502) is distributed above the positioning groove (4) and is fixed with a welding torch (501), and the lower end of the sliding groove is distributed under the positioning groove (4) and is fixed with a nut ( 504), the frame (10) is provided with a lead screw (9) fitted with the nut (504) and a motor (8) for driving the lead screw (9) to rotate. 2 . The welding device for straight seam steel pipes according to claim 1 , wherein a positioning mechanism ( 1 ) for clamping and fixing the straight seam steel pipes ( 2 ) to be welded is provided on the frame ( 10 ). 3 . ), the positioning mechanism (1) includes a plurality of clamping supports (102) fixed on the frame (10) and located on both sides of the positioning groove (4), and the clamping supports (102) are provided with vertical positioning grooves (4) bolt holes, a positioning bolt (101) is fitted in the bolt hole, and a positioning pressure block (103) is rotatably connected to one end of the positioning bolt (101) toward the positioning groove (4). 3. A welding device for straight seam steel pipes according to claim 2, characterized in that: the positioning pressure block (103) is a rectangular block, so that the positioning pressure blocks (103) located on both sides of the positioning groove (4) ) are matched with each other and are used to hold square steel pipes (2) with straight seams to be welded. 4. A welding device for straight seam steel pipes according to claim 2, characterized in that: the positioning pressure blocks (103) are wedge-shaped blocks, so that the positioning pressure blocks (103) located on both sides of the positioning groove (4) ) are matched with each other and are used to hold the circular straight seam steel pipe (2) to be welded. 5. A welding device for straight seam steel pipes according to claim 1, characterized in that: both ends of the lead screw (9) are respectively rotatably arranged on the shaft seat (7) fixed on the frame (10). In the middle, the motor (8) is fixed to one of the shaft seats (7). 6 . The welding device for straight seam steel pipes according to claim 1 , wherein a wire threading hole ( 503 ) for connecting the welding wire to the welding torch ( 501 ) is opened on the sliding plate ( 502 ). 7 .

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