Head and tail frame welding positioner suitable for pipe flanges of different sizes

Abstract

The invention discloses a head and tail frame welding positioner suitable for pipe flanges of different sizes. The head and tail frame welding positioner comprises a positioner driving end, a positioner driven end, a fixed base and a movable base. The movable base is additionally arranged, so that the driven end of the positioner can do linear motion in the horizontal direction, and the head and tail frame welding positioner can meet the welding requirements of pipe flanges with different lengths; the pneumatic chuck is additionally arranged at the driving end of the positioner, so that the head and tail frame welding positioner can meet the welding requirements of pipe flanges with different diameters, meanwhile, workpieces are automatically clamped and positioned, and the mounting efficiency of the workpieces is improved; the servo motor is arranged on the movable base, and the gear, the rack and the sliding block guide rail are utilized, so that rapid and efficient movement of the driven end of the positioner is achieved, and the workpiece positioning and fixing efficiency is improved.

Description

Technical Field

[0001] The present invention relates to a welding positioner, specifically a head and tail frame welding positioner suitable for pipe flanges of different sizes, belonging to the technical field of welding equipment. Background Art

[0002] Pipe flanges, as welded parts for connecting air ducts and water pipes, are widely used in industrial fields such as coal mines. Traditional pipe flange welding mainly relies on manual operation, with low efficiency and being greatly affected by the technical level of welders, making it difficult to ensure welding quality and stability. The head and tail frame positioner is a mechanical device used for welding operations. It is mainly used to change the welding position of workpieces to facilitate welding operations.

[0003] In the prior art, such as a segmented drum flange welding positioner disclosed in the publication number CN116652514A, which includes a double-column gantry, a cross beam, a rotary lifting mechanism, and a clamping platform; both columns of the double-column gantry are provided with lifting grooves, and the vertical notches of the two lifting grooves correspond to each other. A rotary lifting mechanism is provided in each of the two lifting grooves, and the two rotary lifting mechanisms are respectively fixedly connected to one end of the cross beam. A clamping platform for clamping multiple segments of drum flanges is provided in the middle of the cross beam; it can improve the welding efficiency of segmented drum flanges. However, for existing welding positioners, they usually have fixed clamping dimensions, and the distance between the two clamping ends is usually fixed and unchanged. Moreover, the fixed method is usually not suitable for the welding requirements of pipe flanges of different sizes. Therefore, in order to meet the welding requirements of various pipe flanges of different sizes and the welding requirements of tee pipe flanges and multi-way pipe flanges, the present application proposes a head and tail frame welding positioner suitable for pipe flanges of different sizes. Summary of the Invention

[0004] The purpose of the present invention is to provide a head and tail frame welding positioner suitable for pipe flanges of different sizes in order to solve at least one of the above technical problems.

[0005] The present invention realizes the above purpose through the following technical solutions: A head and tail frame welding positioner suitable for pipe flanges of different sizes includes a driving end of the positioner, a driven end of the positioner, and a fixed base. The driving end of the positioner is fixedly connected to one end of the fixed base, and the driven end of the positioner is movably connected to the other end of the fixed base. The driven end of the positioner makes a linear reciprocating movement along the fixed base; A pneumatic chuck is connected to the side of the driving end of the positioner close to the driven end, and a driven end center is fixedly connected to the upper end of the driven end of the positioner.

[0006] As a further solution of the present invention: The pneumatic chuck is fixed to the upper part of the driving end of the positioner by threaded connection, and the pneumatic chuck and the driven end center are coaxially arranged.

[0007] As a further solution of the present invention: The fixed base is fixed to the ground, a movable base is movably connected to the fixed base, and the bottom end of the driven end of the positioner is fixedly connected to the movable base.

[0008] As a further solution of the present invention: The movable base includes a movable base backing plate and a movable base main board, and the welding positions of the movable base backing plate on the upper board surface of the movable base main board are located at the four corners of the driven end of the positioner.

[0009] As a further solution of the present invention: The lower board surface of the movable base main board is connected with sliders, the fixed base is provided with moving slots, and guide rails are respectively connected to the two side walls of the moving slots, and the sliders are movably clamped on the guide rails.

[0010] As a further solution of the present invention: The connection positions of the sliders are respectively located on both sides of the movable base main board, and two sliders are connected to each side of the movable base main board, and the two guide rails are arranged in parallel with equal height and equal length.

[0011] As a further solution of the present invention: A boss support plate is fixedly connected to the rail body on the side of the guide rail close to the driven end of the positioner, a boss and a contact b support plate are fixedly connected to the boss support plate, a roller frame and a contact a support plate are connected to the side plate body of the movable base main board close to the driven end of the positioner, a roller is rotatably connected to the roller frame, the installation positions of the roller and the boss are located on the same straight line, the contact a support plate and the contact b support plate are arranged in a staggered manner, and a contact a is installed on the contact a support plate, and a contact b is installed on the contact b support plate.

[0012] As a further solution of the present invention: A servo motor is fixedly connected to the movable base main board of the movable base, a gear is fixed to the output end of the servo motor, a rack is provided on the inner side wall of the guide rail, and the rack meshes with the gear.

[0013] As a further solution of the present invention: A positioning block is arranged on one side of the servo motor body, a countersunk head bolt is connected to the positioning block, the positioning block is fixedly connected to the movable base main board through the countersunk head bolt, a number of hexagon bolts are threadedly penetrated through the block body of the positioning block, the front ends of the hexagon bolts abut against the body of the servo motor, a hexagon nut is threadedly sleeved on the bolt rod of the hexagon bolt, and the hexagon nut is closely attached to one side of the positioning block.

[0014] The beneficial effects of the present invention are as follows: 1) By adding a movable base in the present invention, the driven end of the positioner can make a linear motion in the horizontal direction, and the head and tail frame welding positioner can meet the welding requirements of different lengths of pipe flanges; 2) By adding a pneumatic chuck to the driving end of the positioner in the present invention, the head and tail frame welding positioner can meet the welding requirements of different diameters of pipe flanges, and at the same time, automatic clamping and positioning of workpieces are realized, and the installation efficiency of workpieces is improved; 3) A servo motor is provided on the mobile base of the present invention, and the rapid and efficient movement of the driven end of the positioner is realized by using a gear-rack and a slider guide rail, improving the efficiency of workpiece positioning and fixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the structure of the driven end of the positioner of the present invention; Figure 3 is a schematic diagram of the structure of the mobile base of the positioner of the present invention; Figure 4 is a schematic diagram of a partial structure of the fixed base of the present invention; Figure 5 is a schematic diagram of a partial structure of the mobile base of the present invention; In the figure: 1, the driving end of the positioner; 2, pneumatic chuck; 3, fixed base; 4, driven end of the positioner; 5, mobile base; 6, servo motor; 7, driven end center; 8, mobile base backing plate; 9, mobile base main board; 10, slider; 11, guide rail; 12, rack; 13, roller frame; 14, roller; 15, boss; 16, contact a support plate; 17, contact a; 18, contact b; 19, contact b support plate; 20, boss support plate; 21, countersunk head bolt; 22, hexagon bolt; 23, hexagon nut; 24, positioning block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0017] Embodiment 1, as Figures 1 to 5 shown, a head and tail frame welding positioner adapted to different sizes of pipe flanges includes a driving end 1 of the positioner, a driven end 4 of the positioner, and a fixed base 3. The driving end 1 of the positioner is fixedly connected to one end of the fixed base 3, and the driven end 4 of the positioner is movably connected to the other end of the fixed base 3. The driven end 4 of the positioner makes a linear reciprocating movement along the fixed base 3; A pneumatic chuck 2 is connected to the side of the driving end 1 of the positioner close to the driven end 4. A driven end center 7 is fixedly connected to the upper end of the driven end 4 of the positioner. Different sizes of pipe flanges can be clamped and fixed through the pneumatic chuck 2, and the provided driven end center 7 can move and adjust relative to the pneumatic chuck 2 under the drive of the linear reciprocating movement of the driven end 4 of the positioner, so as to adapt to the welding requirements of different lengths of pipe flanges.

[0018] Embodiment 2. In addition to all the technical features in Embodiment 1, this embodiment further includes: The pneumatic chuck 2 is fixedly connected to the upper part of the active end 1 of the positioner through threaded connection, and the pneumatic chuck 2 and the driven end center 7 are coaxially arranged. The pneumatic chuck 2 provides a clamping force, which can quickly clamp the workpiece, and the coaxial arrangement is adopted so as to be able to coaxially align one end of the pipe flange with the positioner center 7 and the other end of the pipe flange with the pneumatic chuck 2, avoiding equipment damage caused by coaxiality deviation.

[0019] The fixed base 3 is fixed to the ground. A moving base 5 is movably connected to the fixed base 3. The bottom end of the driven end 4 of the positioner is fixedly connected to the moving base 5, so that the driven end 4 of the positioner can be driven by the moving base 5 to move. The driven end 4 of the positioner being fixed on the moving base 5 can reduce the dependence on machining accuracy and assembly accuracy, thereby reducing the difficulty of machining and assembly, and the fixed base 3 provides stable horizontal support for the driven end 4 of the positioner and the moving base 5.

[0020] Embodiment 3. In addition to all the technical features in Embodiment 1, this embodiment further includes: The moving base 5 includes a moving base backing plate 8 and a moving base main board 9, and the welding position of the moving base backing plate 8 on the upper board surface of the moving base main board 9 is located at the four corners of the driven end 4 of the positioner, and the bottom end of the driven end 4 of the positioner can be fixed through the moving base backing plate 8, thereby ensuring the firm connection between the moving base main board 9 and the driven end 4 of the positioner.

[0021] The lower board surface of the moving base main board 9 is connected with sliders 10. The fixed base 3 is provided with moving slots, and guide rails 11 are respectively connected to the two side walls of the moving slots. The sliders 10 are movably clamped on the guide rails 11. By aligning and placing the sliders 10 on the guide rails 11, it can be ensured that the sliders 10 slide along the guide rails 11, and further the moving base main board 9 can realize linear track movement.

[0022] The connection positions of the sliders 10 are respectively located on both sides of the moving base main board 9, and two sliders 10 are connected to each side of the moving base main board 9. The two guide rails 11 are arranged in parallel with equal height and equal length.

[0023] On the rail body of the guide rail 11 near one side of the driven end 4 of the positioner, a boss support plate 20 is fixedly connected. On the boss support plate 20, a boss 15 and a contact b support plate 19 are fixedly connected. On the side plate body of the moving base main board 9 near one side of the driven end 4 of the positioner, a roller frame 13 and a contact a support plate 16 are connected. A roller 14 is rotatably connected to the roller frame 13. The installation positions of the roller 14 and the boss 15 are on the same straight line. The contact a support plate 16 and the contact b support plate 19 are arranged in a staggered manner. And a contact a 17 is installed on the contact a support plate 16, and a contact b 18 is installed on the contact b support plate 19. When it is necessary to reset the driven end 4 of the positioner, when the roller 14 moves to the position of the boss 15, the contact a 17 contacts the contact b 18, indicating that the driven end 4 of the positioner has moved in place, and the reset of the driven end 4 of the positioner is completed.

[0024] A servo motor 6 is fixedly connected to the moving base main board 9 of the moving base 5. A gear is fixed to the output end of the servo motor 6. A rack 12 is provided on the inner side wall of the guide rail 11, and the rack 12 meshes with the gear. The servo motor 6 can drive the gear to rotate, and then under the action of the gear and the rack 12, a driving force is provided for the moving base main board 9. And based on the forward and reverse rotation adjustment of the servo motor 6, the moving direction of the moving base 5 can be adjusted to realize the reciprocating movement of the driven end 4 of the positioner.

[0025] A positioning block 24 is arranged on one side of the body of the servo motor 6. A countersunk head bolt 21 is connected to the positioning block 24. The positioning block 24 is fixedly connected to the moving base main board 9 through the countersunk head bolt 21. A plurality of hexagon head bolts 22 are threadedly penetrated through the body of the positioning block 24. The front end of the hexagon head bolt 22 abuts against the body of the servo motor 6. A hexagon nut 23 is threadedly sleeved on the bolt rod of the hexagon head bolt 22, and the hexagon nut 23 is closely attached to one side of the positioning block 24. By screwing the hexagon head bolt 22, the front end of the hexagon head bolt 22 can firmly abut against the servo motor 6, so that the servo motor 6 can be firmly installed at a suitable position of the moving base 5, and the hexagon head bolt 22 can be locked by tightening the hexagon nut 23 to avoid the loosening of the hexagon head bolt 22 due to vibration during use.

[0026] When it is necessary to position the workpiece to be pre-welded, first measure the length of the workpiece, and then control the servo motor 6 to make the moving base 5 drive the driven end 4 of the positioner to move linearly towards the driving end 1 of the positioner. When the distance between the tip 7 of the driven end of the positioner and the pneumatic chuck 2 is equal to the length of the workpiece, the servo motor 6 stops working, and the moving base 5 and the driven end 4 of the positioner stop moving. When the relative positions of the main and driven ends of the positioner remain unchanged, align one end of the workpiece, i.e., the pipe flange, coaxially with the tip 7 of the positioner, and align the other end of the pipe flange coaxially with the pneumatic chuck 2, with partial overlap in the horizontal direction. When it is necessary to fix the workpiece, control the pneumatic chuck 2 and set an appropriate clamping force to clamp the workpiece to keep it fixed to ensure the welding accuracy. When it is necessary to change the radial angle of the pipe flange, control the rotation of the driving end 1 of the positioner to turn the workpiece to an appropriate angle for welding. When it is necessary to reset the driven end 4 of the positioner, the servo motor 6 runs at a low speed, and the driven end 4 of the positioner moves away from the driving end 1 of the positioner. When the roller device 13 passes over the boss 15, the contact a and the contact b come into contact, and the host computer receives the signal, and the servo motor 6 stops running, and the reset of the driven end 4 of the positioner is completed.

[0027] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0028] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A head and tail frame welding positioner adapted to pipe flanges of different sizes, comprising a positioner active end (1), a positioner driven end (4) and a fixed base (3), characterized in that: The active end (1) of the positioner is fixedly connected to one end of the fixed base (3), the passive end (4) of the positioner is movably connected to the other end of the fixed base (3), and the passive end (4) of the positioner moves back and forth in a straight line along the fixed base (3); A pneumatic chuck (2) is connected to a side of the active end (1) of the positioner close to the passive end (4) of the positioner, and a passive end top (7) is fixedly connected to the upper end of the passive end (4) of the positioner.

2. The head and tail frame welding positioner according to claim 1, characterized in that: The pneumatic chuck (2) is fixed to the upper end of the active end (1) of the positioner through a threaded connection, and the pneumatic chuck (2) and the driven end top (7) are arranged coaxially.

3. The head and tail frame welding positioner according to claim 1, characterized in that: The fixed base (3) is fixed to the ground, a movable base (5) is movably connected to the fixed base (3), and the bottom end of the driven end (4) of the positioner is fixedly connected to the movable base (5).

4. The head and tail frame welding positioner according to claim 3 is characterized in that: The mobile base (5) comprises a mobile base pad (8) and a mobile base main board (9), and the welding position of the mobile base pad (8) on the upper plate surface of the mobile base main board (9) is located at the four corners of the positioner driven end (4).

5. The head and tail frame welding positioner according to claim 4, characterized in that: The lower surface of the movable base mainboard (9) is connected to a slider (10), the fixed base (3) is provided with a movable slot, and the slot walls on both sides of the movable slot are respectively connected to guide rails (11), and the slider (10) is movably clamped on the guide rails (11).

6. The head and tail frame welding positioner according to claim 5, characterized in that: The connection positions of the sliders (10) are respectively located on both sides of the mobile base mainboard (9), and two sliders (10) are connected to each side of the mobile base mainboard (9), and the two guide rails (11) are arranged in parallel with equal height and length.

7. The head and tail frame welding positioner according to claim 6, characterized in that: A boss support plate (20) is fixedly connected to the rail body of the guide rail (11) on the side close to the driven end (4) of the positioner, and a boss (15) and a contact b support plate (19) are fixedly connected to the boss support plate (20). A roller frame (13) and a contact a support plate (16) are connected to the plate body of the movable base main board (9) on the side close to the driven end (4) of the positioner, and a roller (14) is rotatably connected to the roller frame (13). The installation positions of the roller (14) and the boss (15) are located in the same straight line. The contact a support plate (16) and the contact b support plate (19) are arranged in a staggered state, and the contact a (17) is installed on the contact a support plate (16), and the contact b (18) is installed on the contact b support plate (19).

8. The head and tail frame welding positioner according to claim 4, characterized in that: A servo motor (6) is fixedly connected to a mobile base mainboard (9) of the mobile base (5), a gear is fixed to the output end of the servo motor (6), a rack (12) is provided on the inner side wall of the guide rail (11), and the rack (12) is meshed with the gear.

9. The head and tail frame welding positioner according to claim 8, characterized in that: A positioning block (24) is provided on one side of the body of the servo motor (6), and a countersunk bolt (21) is connected to the positioning block (24). The positioning block (24) is fixedly connected to the mobile base mainboard (9) via the countersunk bolt (21). A plurality of hexagonal bolts (22) are threadedly connected to the body of the positioning block (24), and the front end of the hexagonal bolt (22) is against the body of the servo motor (6). A hexagonal nut (23) is threadedly sleeved on the bolt rod of the hexagonal bolt (22), and the hexagonal nut (23) is tightly attached to one side of the positioning block (24).

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