Rectangular tube welding jig

Abstract

The utility model relates to the field of square tube welding, specifically discloses a rectangular tube welding clamp, including two symmetrical setting base, two base upside are provided with two symmetrical setting positioning board, positioning board is connected on two base slidingly, positioning board is used for placing square tube, positioning board is provided with positioning table, and the positioning table is perpendicular to the sliding direction of positioning board, and the both ends of the positioning table are rotatably connected with threaded sleeve, the utility model places square tube through two positioning boards, and the both ends of rectangular tube are placed on two positioning boards respectively, so as to ensure that the both ends of rectangular tube keep stable when welding, and the square tube of perpendicular welding is placed at the both ends of rectangular tube, the square tube is clamped inwards through the positioning table of both sides, so that the square tube can keep stable when welding, so as to simplify square tube positioning and clamping steps, improve square tube welding efficiency, and if square tube needs to be welded on C-shaped steel, then the positioning table is clamped into C-shaped steel, and the C-shaped steel is supported by using wedge block, so as to ensure the stability of C-shaped steel.

Description

Technical Field

[0001] This utility model relates to the field of square tube welding, specifically a rectangular tube welding fixture. Background Technology

[0002] When performing vertical welding on square tubes, in order to ensure welding accuracy, it is often necessary to position the square tubes using a clamp. Traditional positioning clamps require fixing two sections of square tubes separately and adjusting them to a vertical position before welding can be performed. This makes the square tube clamping and positioning process cumbersome and affects welding efficiency. Moreover, when welding long square tubes, since traditional square tube clamps can only fix one end to be welded, unstable fixing is prone to occur, thus affecting welding accuracy. Utility Model Content

[0003] The purpose of this utility model is to provide a rectangular tube welding fixture to overcome the above-mentioned defects in the prior art.

[0004] According to the present invention, a rectangular tube welding fixture includes two symmetrically arranged bases. Two symmetrically arranged positioning plates are arranged on the upper side of the two bases. The positioning plates are slidably connected to the two bases. The positioning plates are used to place the rectangular tube. The positioning plates are provided with positioning platforms. The positioning platforms are perpendicular to the sliding direction of the positioning plates. Threaded sleeves are rotatably connected to both ends of the positioning platforms. Screws are threadedly connected to the threaded sleeves. The screws are fixed to the upper surface of the positioning plates. The two positioning platforms can clamp the rectangular tube between them. Preferably, a guide rail is fixedly provided on the upper end face of the base, and clamping plates located on both sides of the guide rail are fixedly provided on the lower end face of the positioning plate. A limiting groove is provided on the side of the guide rail near the clamping plate, and a limiting protrusion is fixedly provided on the side of the clamping plate near the guide rail. The limiting protrusion slides in the limiting groove, and a limiting bolt that penetrates the positioning plate is threadedly connected to the positioning plate. The limiting bolt can abut against the upper end face of the guide rail.

[0005] Preferably, the positioning platform has a hollow cavity inside, and the upper and lower side walls of the cavity are provided with sliding grooves. A sliding plate is slidably connected in the cavity of the positioning platform. The upper and lower end faces of the sliding plate are fixed with protrusions that slide in the sliding grooves. Two symmetrically arranged wedge blocks are provided on the upper and lower sides of the positioning platform. The upper and lower wedge blocks are respectively fixed on the protrusions at the upper and lower ends of the sliding plate. The sides of the two wedge blocks at the same height that are close to each other are outwardly inclined slopes. The wedge blocks can be inserted into the gap between the C-shaped steel and the positioning platform.

[0006] Preferably, the positioning platform has two spring seats fixed inside the cavity, and the two sliding plates are located between the two spring seats. A spring is fixed between the sliding plate and the adjacent spring seat.

[0007] Preferably, the positioning plate has a vertical through groove, and the wedge-shaped block on the lower side slides in the through groove.

[0008] Preferably, the threaded sleeve is fixed with turntables at both the upper and lower ends, and the two turntables are located on the upper and lower sides of the positioning platform, respectively, and the diameter of the turntables is greater than the width of the positioning platform.

[0009] The beneficial effects of this utility model are as follows: This utility model uses two positioning plates to place the square tube, with both ends of the rectangular tube placed on the two positioning plates respectively, thereby ensuring that the ends of the rectangular tube remain stable during welding. The square tube to be welded vertically is placed at both ends of the rectangular tube, and the square tube is clamped inward by the positioning platforms on both sides, so that the square tube can remain stable during welding. This simplifies the square tube positioning and clamping steps and improves the square tube welding efficiency. At the same time, if it is necessary to weld the square tube to C-shaped steel, the positioning platform is inserted into the C-shaped steel, and the C-shaped steel is supported by wedge blocks to ensure the stability of the C-shaped steel. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This is a utility model Figure 1 Enlarged view of point B in the middle; Figure 4 This is a top view of the present invention; Figure 5 This is a utility model Figure 4 A cross-sectional view along the CC direction; Figure 6 This is a utility model Figure 5 Enlarged view of point E in the middle; Figure 7 This is a utility model Figure 4 A cross-sectional view along the DD direction; Figure 8 This is a utility model Figure 7 Enlarged diagram of point F in the middle.

[0011] In the picture: 10. Base; 11. Guide rail; 111. Limiting groove; 20. Positioning plate; 201. Through groove; 21. Knob; 22. Positioning platform; 221. Slide groove; 23. Clamping plate; 24. Limiting bolt; 25. Limiting protrusion; 30. Threaded sleeve; 31. Turntable; 32. Screw; 40. Wedge block; 50. Sliding plate; 51. Spring seat; 52. Spring. Detailed Implementation

[0012] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are merely simplified descriptions for the convenience of describing this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0013] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific implementations of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model. As used herein, the terms up / down and left / right are not limited to their strict geometric definitions, but rather include tolerances for reasonable and inconsistent machining or human errors. The specific features of this rectangular tube welding fixture are described in detail below: One embodiment of this utility model: Reference Figures 1-8 This utility model provides a rectangular tube welding fixture, including two symmetrically arranged bases 10. Two symmetrically arranged positioning plates 20 are arranged on the upper side of the two bases 10. The positioning plates 20 are slidably connected to the two bases 10 and are used to place the rectangular tube. The positioning plates 20 are provided with positioning platforms 22, which are perpendicular to the sliding direction of the positioning plates 20. Threaded sleeves 30 are rotatably connected to both ends of the positioning platforms 22. Screws 32 are threadedly connected to the threaded sleeves 30. The screws 32 are fixed to the upper end face of the positioning plates 20. The two positioning platforms 22 can clamp the rectangular tube between them. A guide rail 11 is fixedly mounted on the upper end face of the base 10, and clamping plates 23 located on both sides of the guide rail 11 are fixedly mounted on the lower end face of the positioning plate 20. A limiting groove 111 is opened on the side of the guide rail 11 near the clamping plate 23. A limiting protrusion 25 is fixedly mounted on the side of the clamping plate 23 near the guide rail 11. The limiting protrusion 25 slides in the limiting groove 111. A limiting bolt 24 that penetrates vertically through the positioning plate 20 is threaded onto the positioning plate 20. The limiting bolt 24 can abut against the upper end face of the guide rail 11. A knob 21 is fixed on the upper end of the limiting bolt 24.

[0014] Reference Figure 6The positioning platform 22 is hollow, forming a cavity. Sliding grooves 221 are provided on both the upper and lower side walls of the cavity. A sliding plate 50 is slidably connected in the cavity of the positioning platform 22. The upper and lower end faces of the sliding plate 50 are fixed with protrusions that slide in the sliding grooves 221. Two symmetrically arranged wedge blocks 40 are provided on both the upper and lower sides of the positioning platform 22. The upper and lower wedge blocks 40 are respectively fixed on the protrusions at the upper and lower ends of the sliding plate 50. The sides of the two wedge blocks 40 at the same height that are close to each other are inclined outwards. The wedge blocks 40 can be inserted into the gap between the C-shaped steel and the positioning platform 22. The sliding cooperation between the sliding plate 50 and the cavity of the positioning platform 22 ensures the stability of the wedge blocks 40 during the sliding process. By using the wedge blocks 40 to abut against the two ends of the C-shaped steel, the C-shaped steel can be stably positioned on the positioning platform 22.

[0015] Reference Figure 6 The positioning platform 22 has two spring seats 51 fixed inside the cavity, and two sliding plates 50 are located between the two spring seats 51. A spring 52 is fixed between the sliding plate 50 and the adjacent spring seat 51. Through the elastic force of the spring 52, the wedge blocks 40 on both sides of the C-shaped steel can automatically clamp the C-shaped steel.

[0016] Reference Figure 6 The positioning plate 20 has a vertical through groove 201, and the wedge-shaped block 40 on the lower side slides in the through groove 201.

[0017] Reference Figure 2 , Figure 6 The threaded sleeve 30 has a turntable 31 fixed at both the upper and lower ends. The two turntables 31 are located on the upper and lower sides of the positioning table 22 respectively. The diameter of the turntable 31 is larger than the width of the positioning table 22. This arrangement makes it easier to rotate the turntable 31, thereby allowing the threaded sleeve 30 to rotate.

[0018] In use, the distance between the two positioning plates 20 is adjusted according to the length of the rectangular tube, and then the two ends of the rectangular tube are placed on the two positioning plates 20 respectively.

[0019] Then place the square tube or C-shaped steel to be welded on the positioning table 22.

[0020] If the workpiece to be welded is a square tube, simply place the positioning table 22 against the square tube to be welded, rotate the turntable 31 to rotate the threaded sleeve 30, and then move the threaded sleeve 30 up or down along the screw 32 to adjust the height of the positioning table 22. This ensures that the positioning table 22 can abut against the middle position of the square tube to be welded, thus ensuring that the square tube to be welded and the rectangular tube are subjected to uniform force when they abut against each other, and thus ensuring the welding accuracy of the square tube to be welded. Move the positioning table 22 closer to the rectangular tube until the rectangular tube abuts against the square tube to be welded, then rotate the knob 21 to make the lower end of the limit bolt 24 abut against the upper end face of the guide rail 11, thereby restricting the movement of the positioning plate 20 and ensuring accurate positioning of the rectangular tube and the square tube to be welded during welding.

[0021] After welding is completed on the side of the rectangular tube that abuts against the positioning plate 20, loosen the limiting bolt 24, move the positioning plate 20, rotate the rectangular tube and the square tube to be welded 180 degrees, and then move the positioning plate 20 again so that the positioning table 22 abuts against the square tube to be welded, and complete the welding of the remaining side.

[0022] If the workpiece to be welded is a C-shaped steel, after adjusting the positioning table 22 to the middle position in the vertical direction of the C-shaped steel, the wedge block 40 will abut against the two ends of the C-shaped steel under the elastic force of the spring 52, thereby clamping and fixing the C-shaped steel and ensuring the stability of the C-shaped steel during welding.

[0023] Those skilled in the art will appreciate that various modifications to the above embodiments can be made without departing from the overall spirit and concept of this utility model. All such modifications fall within the protection scope of this utility model. The protection scheme of this utility model is defined by the appended claims.

Claims

1. A rectangular tube welding fixture, characterized in that: The device includes two symmetrically arranged bases (10), and two symmetrically arranged positioning plates (20) are provided on the upper side of the two bases (10). The positioning plates (20) are slidably connected to the two bases (10). The positioning plates (20) are used to place square tubes. The positioning plates (20) are provided with positioning platforms (22). The positioning platforms (22) are perpendicular to the sliding direction of the positioning plates (20). The two ends of the positioning platforms (22) are rotatably connected with threaded sleeves (30). The threaded sleeves (30) are threadedly connected with screws (32). The screws (32) are fixed on the upper surface of the positioning plates (20). The two positioning platforms (22) can clamp the square tubes between them. The upper end face of the base (10) is fixed with a guide rail (11), and the lower end face of the positioning plate (20) is fixed with clamping plates (23) located on both sides of the guide rail (11). The side of the guide rail (11) near the clamping plate (23) is provided with a limiting groove (111). The side of the clamping plate (23) near the guide rail (11) is fixed with a limiting protrusion (25). The limiting protrusion (25) slides in the limiting groove (111). The positioning plate (20) is threaded with a limiting bolt (24) that penetrates the positioning plate (20) vertically. The limiting bolt (24) can abut against the upper end face of the guide rail (11).

2. A rectangular tube welding fixture according to claim 1, characterized in that: The positioning platform (22) is hollow inside to form a cavity. The upper and lower side walls of the cavity of the positioning platform (22) are provided with sliding grooves (221). A sliding plate (50) is slidably connected in the cavity of the positioning platform (22). The upper and lower end faces of the sliding plate (50) are fixed with protrusions that slide in the sliding grooves (221). Two symmetrically arranged wedge blocks (40) are provided on the upper and lower sides of the positioning platform (22). The wedge blocks (40) on the upper and lower sides are respectively fixed on the protrusions at the upper and lower ends of the sliding plate (50). The two wedge blocks (40) at the same height have outward inclined slopes on the side that is close to each other. The wedge blocks (40) can be inserted into the gap between the C-shaped steel and the positioning platform (22).

3. A rectangular tube welding fixture according to claim 2, wherein: The positioning platform (22) has two spring seats (51) fixed inside the cavity, and two sliding plates (50) are located between the two spring seats (51). A spring (52) is fixed between the sliding plate (50) and the adjacent spring seat (51).

4. A rectangular tube welding fixture according to claim 2, characterized in that: The positioning plate (20) has a vertical through groove (201) and the wedge block (40) on the lower side slides in the through groove (201).

5. The rectangular tube welding fixture of claim 1, wherein: The threaded sleeve (30) has a turntable (31) fixed at both the upper and lower ends. The two turntables (31) are located on the upper and lower sides of the positioning table (22) respectively. The diameter of the turntable (31) is greater than the width of the positioning table (22).

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