Adjustable square flange welding tool

Abstract

The utility model provides an adjustable square flange welding tool which is characterized in that limiting rails and T-shaped groove rails are arranged on a base in parallel, the limiting rails are arranged on the two sides of the base, the T-shaped groove rails are arranged on the inner sides of the limiting rails, a fixed seat and a movable seat are installed at the two ends of the base respectively, and the movable seat can slide left and right along the limiting rails and the T-shaped groove rails; the square tube supporting seat is mounted between the fixed seat and the movable seat and can slide left and right along the limiting track and the T-shaped groove track, a square tube is supported on the square tube supporting seat, and a round tube is supported on the round tube supporting seat; a movable positioning mechanism is installed on the movable seat and connected with the limiting rail, square flanges are installed on the inner sides of the fixed seat and the movable seat respectively and are coaxial, and the two ends of the square pipe are sleeved with the end faces of the square flanges respectively and welded. The tool can be adjusted through the fixed seat, the movable seat and the square pipe supporting seat of the welding tool and fixedly supports the pipe fitting, so that the two ends of the pipe fitting and the square flange end are accurately welded and positioned, movement and deformation are reduced, and the collinear percent of pass of horizontal lines of the pipe fitting is improved.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical processing technology, and relates to the welding of pipe fittings, specifically to an adjustable flange welding fixture. Background Technology

[0002] Currently, in machining, the welding of round pipe fittings employs manual arc welding, gas shielded welding, and automatic welding. For mass production and applications requiring high efficiency, automatic welding is generally preferred. Through mechanical devices and electronic control systems, automatic welding can precisely control the welding process, reducing human error and making it suitable for large-scale round pipe welding projects. However, the welding process for square or rectangular pipes still largely relies on manual arc welding, gas shielded welding, and laser welding. Due to the relatively special nature of square pipes, the fixtures and welding methods for fixing square pipes are under improvement. When mass-producing pipes of the same specifications or producing multiple sets of pipes of different lengths, the special characteristics of these pipes—square ends—require fixtures for positioning before welding. The workpiece is welded on the fixture to prevent movement or deformation of the square pipe during welding, resulting in a strong and non-deformable joint. Improving welding quality and efficiency still requires further development. Utility Model Content

[0003] The problem this utility model aims to solve is that the welding of existing mass-produced pipes of the same specifications, especially those with square flanges at both ends, is prone to movement or deformation during welding, particularly when using extended pipe processing and fixing fixtures. This results in the two flange sections not being parallel to each other, causing quality problems such as misalignment of the horizontal lines of the square pipe. The present invention provides an adjustable flange welding fixture. Through the fixed seat, movable seat, and square tube support seat of the welding fixture, the pipe fitting is adjustable and fixedly supported, ensuring accurate welding positioning of both ends of the pipe fitting with the flange ends, reducing movement and deformation, improving the horizontal alignment rate of the pipe fitting, meeting the pipe welding quality requirements, and addressing the issue of impacting mass production efficiency.

[0004] To solve the above technical problems, the technical solution adopted by this utility model is: an adjustable flange welding fixture, including a base, on which a limiting rail and a T-slot rail are arranged in parallel, the limiting rail is arranged on both sides of the base, the T-slot rail is arranged inside the limiting rail, and a fixed seat and a movable seat are respectively installed at both ends of the base, the movable seat can slide left and right along the limiting rail and the T-slot rail;

[0005] The movable seat has a roller at its bottom end that is positioned within a limiting track, and a double-ended screw nut is installed at its bottom end and positioned within a T-slot track.

[0006] A square tube support is provided on the base. The square tube support is installed between the fixed base and the movable base and can slide left and right along the limiting track and the T-slot track. The square tube support supports the square tube.

[0007] The movable seat is equipped with a movable positioning mechanism connected to the limiting rail. The fixed seat and the inner side of the movable seat are respectively equipped with flanges and are coaxial. The two ends of the square tube are respectively fitted into the flange end faces and welded.

[0008] Preferably, a circular tube support is provided on the base, the circular tube support supports the circular tube, and the two ends of the circular tube are respectively welded to the flange end face.

[0009] Preferably, multiple square tubes are supported side by side on the square tube support base, and the two ends of the square tubes are respectively fitted into the flange end face and welded.

[0010] Preferably, the bottom end of the movable seat is equipped with a double-ended screw nut, which is a locking nut or a T-nut and is set in a T-slot track.

[0011] Preferably, the movable seat is equipped with a positioning pin that connects to the limiting rail.

[0012] The advantages and positive effects of this utility model are:

[0013] 1. The adjustable flange welding fixture of this utility model has a fixed seat and a movable seat installed at both ends of the base. The adjustable movable seat slides left and right along the limiting track and the T-slot track and is fixedly installed on the base. The flange is fixedly installed on the inner side of the fixed seat and the movable seat respectively. The two ends of the upper tube of the square tube support are tightly welded to the end face of the flange respectively. The holes on the flanges on the inner side of the fixed seat and the movable seat are coaxial and coaxial with the square tube.

[0014] 2. This utility model of adjustable flange welding fixture uses a parallel setting of limiting rails and T-slot rails on the base. The movable seat and square tube support seat can slide left and right along the limiting rails and T-slot rails and can be adjusted. The square tube support seat is installed between the fixed seat and the movable seat, and supports the square tube. It is suitable for welding flanges at both ends of extra-long square tubes, so that the fixed seat, movable seat and the middle square tube support seat are kept on the same axis. The fixed seat and movable seat at both ends of the base are fixed to the flanges. The flange end faces are kept parallel to each other and the flanges are perpendicular to the square tube. The welding fixture makes the welding pipe positioning accurate and improves the qualification rate of the horizontal line collinearity between the square tube and the flange.

[0015] 3. This utility model of adjustable flange welding fixture uses a movable seat with a movable positioning mechanism and positioning pin installed at the bottom, which can be fixed on the limit track. The movable seat is equipped with a double-ended screw nut at the bottom and set in the T-shaped track. Adjusting and fixing the movable seat and the fixed seat facilitates parallel welding of the flange end faces. It is suitable for mass production of pipes of the same specifications and welding of pipes with square flanges at both ends. The processing and fixing fixture reduces the movement and deformation of square tubes during welding, thus meeting the welding quality requirements of pipe fittings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an adjustable flange welding fixture structure.

[0017] 1-Base, 2-Fixed seat, 3-Positioning pin, 4-Locking screw, 5-Flange, 6-Square tube support, 7-Modible seat, 8-Modible positioning mechanism, 9-Roller, 10-Double-ended screw nut, 11-T-slot track, 12-Limit track, 13-Round tube support. Detailed Implementation

[0018] To better understand this utility model, the following description, in conjunction with specific embodiments, will further illustrate this utility model.

[0019] See Figure 1 This utility model provides an adjustable welding fixture for flanges. It is suitable for mass production of pipes of the same specifications and for welding pipes with square flanges at both ends.

[0020] The flange is rectangular in shape and square in diameter. Prepare a square hole flange 5.

[0021] A long steel plate base 1 has a limiting rail 12 and a T-slot rail 11 fixedly mounted on it in parallel along its length. The limiting rail 12 is fixedly mounted on both sides of the base 1 in the length direction. The limiting rail 12 is made into an L-shaped rail, with one side serving as a limiting baffle. The T-slot rail 11 is installed in parallel on the inner side of the limiting rail 12.

[0022] A fixed seat 2 and a movable seat 7 are respectively installed at both ends of the base 1. A flange 5 is installed on the inner side of the fixed seat 2 and the movable seat 7 and they are coaxial. The flange 5 with a square hole is selected for welding. The inner side of the fixed seat 2 and the movable seat 7 is consistent with the rectangle of the flange 5. The fixed seat 2 is fixed to the base 1 by locking screws 4 and positioning pins 3. A roller 9 is installed at the bottom of the movable seat 7 in the limiting rail 12. The roller 9 is limited to move by the L-shaped baffle of the limiting rail 12. The bottom of the movable seat 7 moves in the T-slot rail 11 by installing a double-ended screw nut 10, i.e., a locking nut and a T-nut. The movable seat 7 can slide left and right along the limiting rail 12 and the T-slot rail 11. When the welding fixture is working, a movable positioning mechanism 8 and a positioning pin 3 are installed at both ends of the movable seat 7 and connected to the limiting rail 12 to fix the movable seat 7 on the base 1.

[0023] On the base 1, a square tube support seat 6 is installed between the fixed seat 2 and the movable seat 7. A roller 9 is installed at the bottom of the square tube support seat 6 within the limiting rail 12 and can slide left and right along the limiting rail 12 and the T-slot rail 11. The roller 9 is limited by the L-shaped baffle of the limiting rail 12. The bottom of the square tube support seat 6 moves within the T-slot rail 11 by installing a double-ended screw nut 10 (i.e., a locking nut) and a T-nut. The square tube support seat 6 is made into a rectangular seat with square holes. Square tubes pass through the square holes, and the support seat supports four square tubes. When the welding fixture is working, the movable positioning mechanism 8 and the positioning pin 3 installed at both ends of the square tube support seat 6 are connected to the limiting rail 12 to fix the square tube support seat 6 on the base 1.

[0024] On the welding fixture, flanges 5 are installed on the inner sides of the fixed seat 2 and the movable seat 7 respectively and are coaxial. The two ends of the square tube that passes through the square tube support seat 6 are respectively fitted onto the end faces of the flanges 5 and welded.

[0025] When mass-producing pipes of the same specifications, consisting of round pipes and square flanges at both ends, a round pipe support 13 is installed on the base 1. The round pipes are supported on the round pipe support 13, and both ends of the round pipes are fitted into the end faces of the flanges 5 and welded. This fixture is used for positioning before welding. The workpieces are welded on the fixture, and after welding, they are removed from the fixture.

[0026] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made within the scope of this utility model should still fall within the scope of this patent.

Claims

1. An adjustable flange welding fixture, comprising a base, characterized in that: The base is provided with a limiting rail and a T-slot rail in parallel. The limiting rail is provided on both sides of the base, and the T-slot rail is provided inside the limiting rail. A fixed seat and a movable seat are respectively installed at both ends of the base. The movable seat can slide left and right along the limiting rail and the T-slot rail. The movable seat has a roller at its bottom end that is positioned within a limiting track, and a double-ended screw nut is installed at its bottom end and positioned within a T-slot track. A square tube support is provided on the base. The square tube support is installed between the fixed base and the movable base and can slide left and right along the limiting track and the T-slot track. The square tube support supports the square tube. The movable seat is equipped with a movable positioning mechanism connected to the limiting rail. The fixed seat and the inner side of the movable seat are respectively equipped with flanges and are coaxial. The two ends of the square tube are respectively fitted into the flange end faces and welded.

2. The adjustable flange welding fixture according to claim 1, characterized in that: A circular tube support is provided on the base, and a circular tube is supported on the circular tube support. The two ends of the circular tube are respectively welded to the flange end face.

3. The adjustable flange welding fixture according to claim 1, characterized in that: Multiple square tubes are supported side by side on the square tube support base, and the two ends of the square tubes are respectively fitted into the flange end face and welded.

4. The adjustable flange welding fixture according to claim 1, characterized in that: The bottom of the movable seat is equipped with a double-ended screw nut, which is a locking nut and a T-nut, and is set in the T-slot track.

5. The adjustable flange welding fixture according to claim 1, characterized in that: The movable seat is equipped with a positioning pin that connects to the limiting rail.

Images