Solid spinning spiral finned tube laser welding machine

Abstract

The invention relates to the technical field of spiral finned tube laser welding, in particular to a solid spinning spiral finned tube laser welding machine. Comprising a first base and a second base, a threaded rod is rotationally connected between the first base and the second base, and the threaded rod is in threaded connection with a machining assembly; the first motor drives the driving belt wheel to rotate, so that the machining assembly conducts welding operation of the spiral fins on the surface of the base tube while moving, and through the transmission relation between the driving belt wheel and the driven belt wheel, the base tube synchronously rotates while the machining assembly conducts moving machining; according to the spiral finned tube machining device, the machining assembly is arranged to meet the welding requirement of the spiral finned tube, movement of the machining assembly and rotation of the base tube are controlled at the same time through the same driving structure, the stability and consistency in the machining process are improved, the machining speed can be adjusted more conveniently, fin welding is more uniform, and the welding quality is effectively improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of laser welding of spiral finned tubes, and particularly relates to a solid-state spinning spiral finned tube laser welding machine. BACKGROUND

[0002] In order to improve the efficiency of heat exchange, different materials of fins are usually added to the surface of the heat exchanger tube to improve the efficiency of heat exchange. The welding method of the solid-state spinning spiral finned tube is to first press the steel strip through a die so that the steel strip is attached and wound on the surface of the base pipe, and then the steel strip is spirally welded to the base pipe through a laser welding method.

[0003] After searching, a Chinese authorized patent with the publication number CN112958648B and the publication date of June 18, 2024 discloses a solid-state spinning spiral finned tube laser welding forming equipment, which comprises a structural main body, the structural main body comprises a main machine table, a double-drive trolley is arranged on the main machine table, a steel pipe chuck for clamping a steel pipe is arranged on the double-drive trolley; a 3D speed difference rotary extrusion die is arranged for extruding and rotating a steel strip to automatically form a three-dimensional spiral fin; a laser welding mechanism is arranged for welding the fin on the steel pipe; a fin shaping mechanism is arranged for eliminating cracks and burrs on the surface of the fin generated in the forming process in a hot state; a tension control mechanism is arranged for controlling the reaction tension of the contact between the steel strip and the steel pipe; a starting die mechanism is arranged, and the starting die mechanism comprises a steel strip starting die and a steel strip corrector; the solid-state spinning spiral finned tube laser welding forming equipment has a finned tube produced with high corrosion resistance, high wear resistance, very low contact thermal resistance and ultra-high heat exchange efficiency.

[0004] However, the device still has the following defects: although the finned tube produced by the solid-state spinning spiral finned tube laser welding forming equipment has many advantages, during the fin welding process, the device drives the steel pipe to move while rotating the steel pipe synchronously through the double-drive trolley to complete the spiral welding of the steel strip. This processing method cannot guarantee the stability of the steel pipe during processing, and the speed values of the movement and rotation of the steel pipe are not easy to control, which may lead to uneven fin welding and affect the processing quality. SUMMARY

[0005] In view of the above problems, the application provides a solid-state spinning spiral finned tube laser welding machine, which comprises a first base and a second base, a threaded rod is rotatably connected between the first base and the second base, and a processing assembly is threadedly connected to the threaded rod.

[0006] The processing assembly comprises a sliding seat, a vertical plate and a U-shaped support are fixedly connected to the sliding seat, a horizontal plate is fixedly connected to the vertical plate, and a spinning and welding mechanism for pressing and welding the steel strip to the base pipe is arranged on the horizontal plate.

[0007] The U-shaped bracket is rotatably connected to an unwinding roller for feeding the steel strip;

[0008] A drive pulley for moving the processing components is rotatably connected to one side wall of the first base;

[0009] A first clamping mechanism for clamping one end of the base tube is fixedly connected to the first base, and a driven pulley for driving the base tube to rotate is rotatably connected to the first clamping mechanism.

[0010] Two sets of limiting posts are fixedly connected to one side wall of the second base. A movable base is sleeved on the two sets of limiting posts. A second clamping mechanism for clamping the other end of the base tube is fixedly connected to the movable base.

[0011] Furthermore, a first motor is installed on one side wall of the first base, and the output end of the first motor is connected to the center of the driving pulley. Both the driven pulley and the driving pulley are fitted with belts.

[0012] Furthermore, an adjusting screw is rotatably connected to one side wall of the second base. The adjusting screw is threadedly connected to the movable base, and one end of the adjusting screw passes through the movable base and is fixedly connected to a handwheel.

[0013] Furthermore, the first clamping mechanism includes a clamping seat with a limiting groove. A rotating shaft is rotatably connected to the center of the inner wall of the limiting groove. One end of the rotating shaft passes through the clamping seat and is fixedly connected to the center of the driven pulley. The other end of the rotating shaft is fixedly connected to a four-jaw chuck. The four-jaw chuck is provided with four sets of jaws. The four sets of jaws are movably engaged with the inner wall of the base tube. A pressure sensor is installed on the side of each of the four sets of jaws near the inner wall of the base tube.

[0014] Furthermore, an angle adjustment mechanism is provided at the top of the horizontal plate. The angle adjustment mechanism includes a worm gear and two sets of fixed plates. The worm gear is rotatably connected to the horizontal plate, and the two sets of fixed plates are fixedly connected to the horizontal plate. A worm is rotatably connected between the two sets of fixed plates. The worm meshes with the worm gear. A second motor is mounted on one set of fixed plates. The output end of the second motor is drivenly connected to one end of the worm. One end of the worm passes through one set of fixed plates and is fixedly connected to a first synchronous pulley. A synchronous belt is sleeved on the first synchronous pulley. The other end of the synchronous belt is sleeved with a second synchronous pulley. The second synchronous pulley is rotatably connected to the side wall of the U-shaped bracket.

[0015] Furthermore, the top of the U-shaped bracket is provided with a first lead screw groove, in which a lead screw is rotatably connected. One end of the lead screw passes through the U-shaped bracket and is fixedly connected to the center of the second synchronous pulley. A steel belt positioning mechanism is threaded onto the lead screw.

[0016] Furthermore, the steel strip positioning mechanism includes a base, with an internally threaded block fixedly connected to the bottom end of the base. The internally threaded block is threadedly connected to a lead screw. Two sets of positioning sleeves are symmetrically arranged on the base. A second lead screw groove is opened on the base, and a bidirectional lead screw is rotatably connected in the second lead screw groove. A third motor is installed in the base, and the output end of the third motor is drivenly connected to one end of the bidirectional lead screw. Two sets of sliders are symmetrically threaded on the bidirectional lead screw. Limiting shafts are fixedly connected to both sets of sliders, and the two sets of positioning sleeves are respectively sleeved on the two sets of limiting shafts.

[0017] Furthermore, the spinning welding mechanism includes a mounting frame, an adjusting shaft is fixedly connected to the top of the mounting frame, the top of the adjusting shaft passes through the horizontal plate and is fixedly connected to the center of the worm gear, and a spinning die is installed at the bottom of the mounting frame.

[0018] Furthermore, clamping frames are fixedly connected to both sides of the mounting frame, and each set of clamping frames is connected to a damped rotating snap ring. A laser welding gun and a coolant nozzle are respectively snapped into the snap rings. The laser welding gun is electrically connected to a power source through a wire, and the coolant nozzle is connected to a liquid pump through a liquid guide pipe.

[0019] Furthermore, a long plate is fixedly connected between the first base and the second base, a toothed plate is fixedly connected to the long plate, a synchronous shaft is fixedly connected to the bottom end of the unwinding roller, and a gear is fixedly connected to the synchronous shaft after passing through the U-shaped bracket. The gear meshes with the toothed plate.

[0020] The beneficial effects of this invention are:

[0021] 1. The first motor drives the active pulley to rotate, causing the threaded rod to rotate synchronously. This allows the processing component to move horizontally between the first and second bases. While moving, the spiral fins are welded onto the surface of the base tube. Through the transmission relationship between the active and driven pulleys, the base tube rotates synchronously while the processing component moves, meeting the requirements for spiral finned tube welding. By controlling the movement of the processing component and the rotation of the base tube simultaneously through the same set of drive structures, the stability and consistency of the processing are improved, and the processing speed is more easily adjusted, resulting in more uniform fin welding and effectively improving the welding quality.

[0022] 2. The second motor drives the worm gear to rotate, causing the worm wheel to rotate synchronously, thereby adjusting the angle of the spinning welding mechanism. The worm gear drives the first synchronous wheel to rotate, which in turn drives the second synchronous wheel to rotate synchronously. The second synchronous wheel then drives the lead screw to rotate, causing the steel strip positioning mechanism to move along the surface of the first lead screw groove. This ensures that the offset angle of the portion of the steel strip located between the steel strip positioning mechanism and the spinning welding mechanism is consistent with the angle of the spinning welding mechanism, thereby improving the smoothness of steel strip welding and preventing the steel strip from twisting and wrinkling due to the difference in angles between the two mechanisms.

[0023] 3. When the processing components are moving, the sliding seat drives the U-shaped bracket to move, and the gear meshes with the toothed plate to drive the synchronous shaft to rotate synchronously, so that the unwinding roller performs the steel strip feeding operation synchronously. This allows the steel strip to be fed synchronously while welding, so as to maintain the consistency of the steel strip tension and improve the welding effect.

[0024] 4. The second motor drives the worm gear to rotate, causing the worm wheel to rotate synchronously, thereby adjusting the angle of the spinning welding mechanism. The worm gear drives the first synchronous wheel to rotate, which in turn drives the second synchronous wheel to rotate synchronously. The second synchronous wheel then drives the lead screw to rotate, causing the steel strip positioning mechanism to move along the surface of the first lead screw groove. This ensures that the offset angle of the portion of the steel strip located between the steel strip positioning mechanism and the spinning welding mechanism is consistent with the angle of the spinning welding mechanism, thereby improving the smoothness of steel strip welding and preventing the steel strip from twisting and wrinkling due to the difference in angles between the two mechanisms. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the main structure according to an embodiment of the present invention is shown;

[0027] Figure 2 Another angle of the main structure according to an embodiment of the present invention is shown;

[0028] Figure 3 A schematic diagram of the structure of the first clamping mechanism according to an embodiment of the present invention is shown;

[0029] Figure 4 A schematic diagram of the processing component structure according to an embodiment of the present invention is shown;

[0030] Figure 5 A schematic diagram of the structure on the U-shaped plate according to an embodiment of the present invention is shown;

[0031] Figure 6 A schematic diagram of the steel strip positioning mechanism according to an embodiment of the present invention is shown;

[0032] Figure 7 An exploded view of a steel strip positioning mechanism according to an embodiment of the present invention is shown;

[0033] Figure 8 A schematic diagram of a spinning welding mechanism according to an embodiment of the present invention is shown.

[0034] In the diagram: 1. First base; 2. Second base; 3. First motor; 4. Drive pulley; 5. First clamping mechanism; 501. Clamping seat; 502. Limiting groove; 503. Rotating shaft; 504. Four-jaw chuck; 505. Clamping jaw; 506. Pressure sensor; 6. Driven pulley; 7. Belt; 8. Long plate; 9. Toothed plate; 10. Limiting post; 11. Moving base; 12. Second clamping mechanism; 13. Adjusting screw; 14. Handwheel; 15. Threaded rod; 16. Machining component; 1601. Sliding seat; 16011. Sliding hole; 16012. Threaded hole; 1602. Vertical plate; 1603. U-shaped bracket; 16031. First screw groove; 1604. Horizontal plate; 1605. Angle adjustment mechanism; 16051. Worm gear; 16052. Fixed plate; 16053. Worm gear; 16054, Second motor; 16055, First synchronous pulley; 16056, Synchronous belt; 16057, Second synchronous pulley; 1606, Spinning and welding mechanism; 16061, Mounting bracket; 16062, Adjusting shaft; 16063, Spinning die; 16064, Clamping bracket; 16065, Snap-fit ​​ring; 16066, Laser welding gun; 16067, Coolant nozzle; 1607, Unwinding roller; 1608, Synchronous shaft; 1609, Gear; 1610, Lead screw; 1611, Steel strip positioning mechanism; 16111, Base; 16112, Internal threaded block; 16113, Positioning sleeve; 16114, Second lead screw groove; 16115, Bidirectional lead screw; 16116, Slider; 16117, Limiting shaft; 16118, Third motor; 17, Sliding shaft. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] This invention provides a solid-state spun spiral finned tube laser welding machine, including a first base 1 and a second base 2; for example, such as...Figure 1 and Figure 2 As shown.

[0037] A first motor 3 is installed on one side wall of the first base 1, and a drive pulley 4 is rotatably connected to one side wall of the first base 1. The center of the drive pulley 4 is connected to the output end of the first motor 3. A first clamping mechanism 5 is fixedly connected to the first base 1, and a driven pulley 6 is rotatably connected to the first clamping mechanism 5. Both the driven pulley 6 and the drive pulley 4 are fitted with belts 7.

[0038] A long plate 8 is fixedly connected between the first base 1 and the second base 2, and a toothed plate 9 is fixedly connected to the long plate 8.

[0039] Two sets of limiting posts 10 are fixedly connected to one side wall of the second base 2 and the end away from the first base 1. A movable base 11 is sleeved on the two sets of limiting posts 10. A second clamping mechanism 12 is fixedly connected to the movable base 11. The second clamping mechanism 12 and the first clamping mechanism 5 have the same structure and size. A base tube is movably connected between the second clamping mechanism 12 and the first clamping mechanism 5.

[0040] An adjusting screw 13 is rotatably connected to one side wall of the second base 2. The adjusting screw 13 is threadedly connected to the movable base 11, and one end of the adjusting screw 13 passes through the movable base 11 and is fixedly connected to a handwheel 14.

[0041] A threaded rod 15 is rotatably connected between the first base 1 and the second base 2. One end of the threaded rod 15 passes through the first base 1 and is fixedly connected to the center of the drive pulley 4. A processing component 16 is threadedly connected to the threaded rod 15. Two sets of sliding shafts 17 are fixedly connected between the first base 1 and the second base 2. The two sets of sliding shafts 17 are movably fitted with the processing component 16.

[0042] Specifically, before installing or replacing the base tube, the movable base 11 is moved away from the second base 2 by rotating the handwheel 14, and the base tube is placed between the first base 1 and the second base 2, so that the first clamping mechanism 5 clamps one end of the base tube. The movable base 11 is moved closer to the second base 2 by rotating the handwheel 14, so that the second clamping mechanism 12 clamps the other end of the base tube, thereby achieving clamping and limiting of both ends of the base tube, making the base tube more stable during processing.

[0043] Furthermore, the first motor 3 drives the active pulley 4 to rotate, causing the threaded rod 15 to rotate synchronously, thereby causing the processing component 16 to move horizontally between the first base 1 and the second base 2. While moving, the spiral fins are welded on the surface of the base tube. The processing component 16 moves to process instead of the traditional method of dragging the base tube, which improves the stability of the processing process and thus improves the processing quality.

[0044] The first clamping mechanism 5 includes a clamping seat 501; for example, such as Figure 3 As shown.

[0045] The clamping seat 501 has a limiting groove 502. A rotating shaft 503 is rotatably connected to the center of the inner wall of the limiting groove 502. One end of the rotating shaft 503 passes through the clamping seat 501 and is fixedly connected to the center of the driven pulley 6. The other end of the rotating shaft 503 is fixedly connected to a four-jaw chuck 504. The four-jaw chuck 504 is provided with four sets of jaws 505. The four sets of jaws 505 are movably engaged with the inner wall of the base tube. A pressure sensor 506 is installed on the side of each of the four sets of jaws 505 near the inner wall of the base tube.

[0046] Specifically, by adjusting the distance between the four sets of grippers 505, the inner wall of the base tube is clamped. The pressure sensor 506 detects the pressure between the grippers 505 and the base tube. Based on the pressure value fed back by the pressure sensor 506, the clamping force on the base tube is adjusted to avoid excessive clamping force causing deformation of the base tube and insufficient clamping force causing instability. Furthermore, the internal clamping method avoids obstructing the outer surface of the base tube and affecting the processing.

[0047] Furthermore, the driven pulley 6 drives the four-jaw chuck 504 to rotate, thereby causing the base tube to rotate synchronously. That is, through the transmission relationship between the driving pulley 4 and the driven pulley 6, the base tube rotates synchronously while the processing component 16 moves for processing, in order to meet the requirements of spiral finned tube welding. The first motor 3 of the same drive structure simultaneously controls the movement of the processing component 16 and the rotation of the base tube, which improves the consistency of the processing process and makes it easier to adjust the processing speed. Moreover, by setting the size difference between the driving pulley 4 and the driven pulley 6, the rotation speed of the base tube is reduced on the one hand, and the speed of movement of the processing component 16 matches the speed of rotation of the base tube on the other hand, thereby improving the processing accuracy.

[0048] The processing component 16 includes a sliding seat 1601; for example, such as Figure 4 and Figure 5 As shown.

[0049] A vertical plate 1602 and a U-shaped bracket 1603 are fixedly connected to the sliding seat 1601. A horizontal plate 1604 is fixedly connected to the top of the vertical plate 1602. An angle adjustment mechanism 1605 is provided at the top of the horizontal plate 1604. A spinning and welding mechanism 1606 is provided at the bottom of the horizontal plate 1604.

[0050] The angle adjustment mechanism 1605 includes a worm gear 16051 and two sets of fixed plates 16052. The worm gear 16051 is rotatably connected to a horizontal plate 1604, and the two sets of fixed plates 16052 are fixedly connected to the horizontal plate 1604. A worm 16053 is rotatably connected between the two sets of fixed plates 16052. The worm 16053 is meshed with the worm gear 16051. A second motor 16054 is mounted on one set of fixed plates 16052. The output end of the second motor 16054 is connected to one end of the worm 16053. One end of the worm 16053 passes through one set of fixed plates 16052 and is fixedly connected to a first synchronous pulley 16055. A synchronous belt 16056 is sleeved on the first synchronous pulley 16055. The other end of the synchronous belt 16056 is sleeved with a second synchronous pulley 16057. The second synchronous pulley 16057 is rotatably connected to the side wall of the U-shaped bracket 1603.

[0051] Specifically, the second motor 16054 drives the worm gear 16053 to rotate, causing the worm wheel 16051 to rotate synchronously, thereby adjusting the angle of the spinning welding mechanism 1606. The worm gear 16053 drives the first synchronous wheel 16055 to rotate, causing the second synchronous wheel 16057 to rotate synchronously.

[0052] The top end of the U-shaped bracket 1603 is rotatably connected to an unwinding roller 1607, on which a steel strip is wound. The bottom end of the unwinding roller 1607 is fixedly connected to a synchronous shaft 1608. The synchronous shaft 1608 passes through the U-shaped bracket 1603 and is fixedly connected to a gear 1609. The gear 1609 meshes with a toothed plate 9.

[0053] Specifically, while the sliding seat 1601 drives the U-shaped bracket 1603 to move, the gear 1609 meshes with the toothed plate 9, causing the gear 1609 to drive the synchronous shaft 1608 to rotate synchronously, thereby enabling the unwinding roller 1607 to perform the steel strip unwinding operation synchronously, so that the steel strip is unwound simultaneously while being welded, in order to maintain the consistency of tension.

[0054] The top of the U-shaped bracket 1603 is provided with a first lead screw groove 16031, and a lead screw 1610 is rotatably connected in the first lead screw groove 16031. One end of the lead screw 1610 passes through the U-shaped bracket 1603 and is fixedly connected to the center of the second synchronous pulley 16057. A steel belt positioning mechanism 1611 is threaded onto the lead screw 1610.

[0055] Specifically, the second synchronous pulley 16057 drives the lead screw 1610 to rotate, causing the steel strip positioning mechanism 1611 to move along the surface of the first lead screw groove 16031. This ensures that the offset angle of the portion of the steel strip located between the steel strip positioning mechanism 1611 and the spinning welding mechanism 1606 is consistent with the angle of the spinning welding mechanism 1606, thereby improving the smoothness of steel strip welding and preventing the steel strip from twisting and wrinkling due to the different angles of the two.

[0056] The steel strip positioning mechanism 1611 includes a base 16111; for example, such as Figure 6 and Figure 7 As shown.

[0057] The bottom end of the base 16111 is fixedly connected to an internal thread block 16112, which is threadedly connected to the lead screw 1610. Two sets of positioning sleeves 16113 are symmetrically arranged on the base 16111. A second lead screw groove 16114 is opened on the base 16111, and a bidirectional lead screw 16115 is rotatably connected in the second lead screw groove 16114. A third motor 16118 is installed in the base 16111, and the output end of the third motor 16118 is connected to one end of the bidirectional lead screw 16115. Two sets of sliders 16116 are symmetrically threaded on the bidirectional lead screw 16115. Limiting shafts 16117 are fixedly connected to both sets of sliders 16116. The two sets of positioning sleeves 16113 are respectively sleeved on the two sets of limiting shafts 16117.

[0058] Specifically, the third motor 16118 drives the bidirectional lead screw 16115 to rotate, causing the two sets of sliders 16116 to move synchronously in opposite directions, thereby adjusting the distance between the two sets of positioning sleeves 16113. This allows the two sets of positioning sleeves 16113 to fit and limit the two sides of steel strips of different thicknesses, thereby improving the flatness of the steel strip and facilitating the adjustment of the steel strip discharge angle.

[0059] The spinning welding mechanism includes a mounting bracket 16061; exemplarily, such as... Figure 8 As shown.

[0060] An adjusting shaft 16062 is fixedly connected to the top of the mounting bracket 16061. The top of the adjusting shaft 16062 passes through the horizontal plate 1604 and is fixedly connected to the center of the worm gear 16051. A spinning die 16063 is installed at the bottom of the mounting bracket 16061. Clamping brackets 16064 are fixedly connected to both side walls of the mounting bracket 16061. Each of the two sets of clamping brackets 16064 is connected to a damped rotating snap ring 16065. A laser welding gun 16066 and a coolant nozzle 16067 are respectively snapped into the two sets of snap rings 16065. The laser welding gun 16066 is electrically connected to a power source through a wire. The coolant nozzle 16067 is connected to a liquid pump through a liquid guide pipe.

[0061] Specifically, the steel strip is shaped into spiral fins using a spinning die 16063, and the spiral fins are welded to the surface of the base tube using a laser welding gun 16066. Coolant is sprayed onto the processing position through a coolant nozzle 16067, which allows the spiral fins to cool down and solidify quickly while preventing weld spatter. The mounting bracket 16061 is rotated by a worm gear, which synchronizes the angle values ​​of the spinning die 16063 and the laser welding gun 16066, making the welding angle consistent with the angle of the steel strip, thus effectively improving the welding effect.

[0062] The working principle of the solid-state spun spiral finned tube laser welding machine proposed in this invention is as follows:

[0063] Before installing or replacing the base tube, rotate the handwheel 14 to move the movable base 11 away from the second base 2, place the base tube between the first base 1 and the second base 2, and the first clamping mechanism 5 clamps one end of the base tube. Rotate the handwheel 14 to move the movable base 11 closer to the second base 2, and the second clamping mechanism 12 clamps the other end of the base tube, thereby achieving clamping and limiting of both ends of the base tube, making the base tube more stable during processing.

[0064] By adjusting the distance between the four sets of grippers 505, the inner wall of the base tube is clamped. The pressure sensor 506 detects the pressure between the grippers 505 and the base tube. Based on the pressure value fed back by the pressure sensor 506, the clamping force on the base tube is adjusted to avoid excessive clamping force causing deformation of the base tube and insufficient clamping force causing instability. Furthermore, the internal clamping method avoids obstructing the outer surface of the base tube and affecting the processing.

[0065] The first motor 3 drives the drive pulley 4 to rotate, causing the threaded rod 15 to rotate synchronously. This allows the processing component 16 to move horizontally between the first base 1 and the second base 2. The drive pulley 4 drives the driven pulley 6 to rotate, causing the four-jaw chuck 504 to rotate and simultaneously rotate the base tube. In other words, through the transmission relationship between the drive pulley 4 and the driven pulley 6, the processing component 16 moves and processes while the base tube rotates synchronously to meet the requirements of spiral finned tube welding. The first motor 3, using the same drive structure, simultaneously controls the movement of the processing component 16 and the rotation of the base tube, improving the consistency of the processing process and making it easier to adjust the processing speed. Furthermore, the size difference between the drive pulley 4 and the driven pulley 6 reduces the rotation speed of the base tube and matches the speed of the movement of the processing component 16 with the rotation speed of the base tube, thereby improving the processing accuracy. Replacing the traditional dragging method with the moving processing component 16 improves the stability of the processing process and thus enhances the processing quality.

[0066] The steel strip is shaped into spiral fins using a spinning die 16063. The spiral fins are then welded to the surface of the base tube using a laser welding gun 16066. Coolant is sprayed onto the processing position through a coolant nozzle 16067, which rapidly cools and shapes the spiral fins while preventing weld spatter. A worm gear drives the mounting bracket 16061 to rotate, allowing the angle values ​​of the spinning die 16063 and the laser welding gun 16066 to change synchronously, ensuring that the welding angle is consistent with the direction of the steel strip and effectively improving the welding effect.

[0067] When the processing component 16 moves, the sliding seat 1601 drives the U-shaped bracket 1603 to move, and the gear 1609 meshes with the toothed plate 9, causing the gear 1609 to drive the synchronous shaft 1608 to rotate synchronously, thereby enabling the unwinding roller 1607 to perform the steel strip unwinding operation synchronously, so that the steel strip welding is carried out simultaneously and the unwinding is carried out synchronously to maintain the consistency of tension.

[0068] The second motor 16054 drives the worm gear 16053 to rotate, causing the worm wheel 16051 to rotate synchronously, thereby adjusting the angle of the spinning welding mechanism 1606. The worm gear 16053 drives the first synchronous wheel 16055 to rotate, causing the second synchronous wheel 16057 to rotate synchronously. The second synchronous wheel 16057 drives the lead screw 1610 to rotate, causing the steel strip positioning mechanism 1611 to move along the surface of the first lead screw groove 16031. This ensures that the offset angle of the portion of the steel strip located between the steel strip positioning mechanism 1611 and the spinning welding mechanism 1606 is consistent with the angle of the spinning welding mechanism 1606, thereby improving the smoothness of steel strip welding and preventing the steel strip from twisting and wrinkling due to the difference in angles.

[0069] The third motor 16118 drives the bidirectional lead screw 16115 to rotate, causing the two sets of sliders 16116 to move synchronously in opposite directions or in the opposite direction. This allows the distance between the two sets of positioning sleeves 16113 to be adjusted, enabling the two sets of positioning sleeves 16113 to fit and limit the two sides of steel strips of different thicknesses, thereby improving the flatness of the steel strip and facilitating the adjustment of the steel strip discharge angle.

[0070] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A solid-state spinning helical finned tube laser welding machine, comprising a first base and a second base, characterized in that: A threaded rod is rotatably connected between the first base and the second base, and a processing component is threadedly connected to the threaded rod. The processing assembly includes a sliding seat, on which a vertical plate and a U-shaped bracket are fixedly connected. A horizontal plate is fixedly connected to the vertical plate, and the horizontal plate is provided with a spinning welding mechanism for pressing the steel strip and welding the steel strip to the base pipe. The U-shaped bracket is rotatably connected to an unwinding roller for feeding the steel strip; A drive pulley for moving the processing components is rotatably connected to one side wall of the first base; A first clamping mechanism for clamping one end of the base tube is fixedly connected to the first base, and a driven pulley for driving the base tube to rotate is rotatably connected to the first clamping mechanism. Two sets of limiting posts are fixedly connected to one side wall of the second base. A movable base is sleeved on the two sets of limiting posts. A second clamping mechanism for clamping the other end of the base tube is fixedly connected to the movable base.

2. The solid-state spinning helical finned tube laser welding machine according to claim 1, characterized in that: A first motor is installed on one side wall of the first base. The output end of the first motor is connected to the center of the driving pulley. Both the driven pulley and the driving pulley are fitted with belts.

3. The solid-state spinning helical finned tube laser welding machine according to claim 1, characterized in that: An adjusting screw is rotatably connected to one side wall of the second base. The adjusting screw is threadedly connected to the movable base, and one end of the adjusting screw passes through the movable base and is fixedly connected to a handwheel.

4. The solid-state spinning spiral finned tube laser welding machine according to claim 1, characterized in that: The first clamping mechanism includes a clamping seat with a limiting groove. A rotating shaft is rotatably connected to the center of the inner wall of the limiting groove. One end of the rotating shaft passes through the clamping seat and is fixedly connected to the center of the driven pulley. The other end of the rotating shaft is fixedly connected to a four-jaw chuck. The four-jaw chuck is provided with four sets of jaws. The four sets of jaws are movably engaged with the inner wall of the base tube. A pressure sensor is installed on the side of each of the four sets of jaws near the inner wall of the base tube.

5. The solid-state spinning helical finned tube laser welding machine according to claim 1, characterized in that... An angle adjustment mechanism is provided at the top of the horizontal plate. The angle adjustment mechanism includes a worm gear and two sets of fixed plates. The worm gear is rotatably connected to the horizontal plate, and the two sets of fixed plates are fixedly connected to the horizontal plate. A worm is rotatably connected between the two sets of fixed plates. The worm meshes with the worm gear. A second motor is installed on one set of fixed plates. The output end of the second motor is connected to one end of the worm. One end of the worm passes through one set of fixed plates and is fixedly connected to a first synchronous pulley. A synchronous belt is sleeved on the first synchronous pulley. The other end of the synchronous belt is sleeved with a second synchronous pulley. The second synchronous pulley is rotatably connected to the side wall of the U-shaped bracket.

6. The solid-state spinning helical finned tube laser welding machine according to claim 5, characterized in that: The top of the U-shaped bracket is provided with a first lead screw groove, and a lead screw is rotatably connected in the first lead screw groove. One end of the lead screw passes through the U-shaped bracket and is fixedly connected to the center of the second synchronous pulley. A steel belt positioning mechanism is threaded onto the lead screw.

7. The solid-state spinning helical finned tube laser welding machine according to claim 6, characterized in that: The steel strip positioning mechanism includes a base, with an internally threaded block fixedly connected to the bottom end of the base. The internally threaded block is threadedly connected to a lead screw. Two sets of positioning sleeves are symmetrically arranged on the base. A second lead screw groove is opened on the base, and a bidirectional lead screw is rotatably connected in the second lead screw groove. A third motor is installed in the base, and the output end of the third motor is drivenly connected to one end of the bidirectional lead screw. Two sets of sliders are symmetrically threaded on the bidirectional lead screw. Limit shafts are fixedly connected to both sets of sliders, and the two sets of positioning sleeves are respectively sleeved on the two sets of limit shafts.

8. The solid-state spinning spiral finned tube laser welding machine according to claim 1, characterized in that: The spinning and welding mechanism includes a mounting frame, an adjusting shaft is fixedly connected to the top of the mounting frame, the top of the adjusting shaft passes through the horizontal plate and is fixedly connected to the center of the worm gear, and a spinning die is installed at the bottom of the mounting frame.

9. The solid-state spinning spiral finned tube laser welding machine according to claim 8, characterized in that: Both sides of the mounting frame are fixedly connected to clamping frames. Each set of clamping frames is connected to a damped rotating snap ring. A laser welding gun and a coolant nozzle are respectively snapped into the snap rings. The laser welding gun is electrically connected to a power source through a wire, and the coolant nozzle is connected to a liquid pump through a liquid guide pipe.

10. The solid-state spinning helical finned tube laser welding machine according to claim 1, characterized in that: A long plate is fixedly connected between the first base and the second base, and a toothed plate is fixedly connected to the long plate. A synchronous shaft is fixedly connected to the bottom end of the unwinding roller. The synchronous shaft passes through the U-shaped bracket and is fixedly connected to a gear. The gear meshes with the toothed plate.

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