Solid-state steel tape 3d high speed spiral extrusion atomic flow laser welding apparatus

Abstract

This invention discloses a solid-state steel strip 3D high-speed spiral extrusion atomic flow laser welding equipment in the field of spiral finned tube production equipment. It includes a feeding mechanism, a processing mechanism, and a discharging mechanism. The feeding mechanism has a pipe rack for placing steel pipes towards one end of the processing mechanism and a strip reel for placing and conveying steel strips to one end of the processing mechanism. The processing mechanism has a panel and a processing frame fixed to the panel surface. The steel pipes on the pipe rack are inserted from the rear opening of the processing frame and extend to the front opening. The processing frame is also connected to a steel pipe clamping module, a steel strip cutting module, a steel strip tension damping module, a steel strip breaking module, a steel strip extrusion module, and a laser welding module. Multiple functional modules sequentially process the steel strip and weld it to the steel pipe. This not only strengthens the atomic density and hardness of the steel strip through extrusion, preventing wrinkles after deformation, but also makes the steel strip wound on the surface of the steel pipe more stable, improving the overall stability of the spiral finned tube.

Description

Technical Field

[0001] This invention relates to the technical field of spiral finned tube production equipment, specifically to a solid steel strip 3D high-speed spiral extrusion atomic flow laser welding equipment. Background Technology

[0002] As heat exchange elements, spiral finned tubes operate under conditions of high-temperature flue gas or various complex chemical processes. For example, finned tubes used in boiler heat exchangers operate in harsh environments with high temperatures, high pressures, and corrosive atmospheres. This requires finned tubes to have very high performance indicators, such as corrosion resistance, wear resistance, low contact thermal resistance, high stability, and anti-ash accumulation capabilities.

[0003] If 316LTi titanium alloy finned tubes could be used on ocean-going vessels, their repair costs could be significantly reduced and their heat exchange efficiency could be greatly improved.

[0004] Traditional spiral finned tubes mainly include the following types:

[0005] (1) Wrapped spiral fin

[0006] The finned tubes are simply wrapped around without welding, resulting in extremely low heat exchange efficiency and wasting a lot of energy. The manufacturing process requires oil or emulsion, which damages the environment and is not environmentally friendly.

[0007] (2) High-frequency welded spiral fins

[0008] High-frequency welded spiral finned tubes are among the most widely used spiral finned tubes. The process involves heating the outer surfaces of both the steel strip and the tube using the skin effect of a high-frequency current while the steel strip is wound around the steel tube, until solid-state welding occurs. Its disadvantages include low bond strength, easy detachment, altered metallographic structure, and poor durability. Furthermore, its power consumption is typically high, generally reaching 400KW, resulting in significant electricity waste and generating substantial pollutants during production, making it environmentally unfriendly.

[0009] In addition, there are laser-welded finned tubes on the market, but they are modified based on high-frequency welding, and the forming principle is completely wrong. The problem is that they produce tensile cracks, the top of the fins cracks completely when stretched, and there are a lot of wrinkles at the root. They are basically unusable, not corrosion resistant, have low production efficiency, and can only be used for low-end products. Summary of the Invention

[0010] To overcome the shortcomings of existing technical solutions, this invention provides a solid steel strip 3D high-speed spiral extrusion atomic flow laser welding equipment, which can effectively solve the technical problem of poor stability of spiral finned tubes.

[0011] The technical solution adopted by this invention to solve its technical problem is:

[0012] Solid steel strip 3D high-speed spiral extrusion atomic flow laser welding equipment includes a feeding mechanism, a processing mechanism and a discharging mechanism. The feeding mechanism is provided with a pipe rack for placing steel pipes toward one end of the processing mechanism. The feeding mechanism is also provided with a belt reel for placing and conveying steel strips to one end of the processing mechanism.

[0013] The processing mechanism is equipped with a panel and a processing frame fixed on the surface of the panel. The processing frame has holes at both ends. The steel pipe on the pipe frame is inserted from the hole at the rear end of the processing frame and extends to the hole at the front end. The processing frame is also connected to a steel pipe clamping module, a steel strip cutting module, a steel strip tension damping module, a steel strip breaking module, a steel strip extrusion module, and a laser welding module.

[0014] The steel pipe clamping module is provided with three fixed connecting rods fixed to the inner wall of the processing frame along the extension direction of the steel pipe. The fixed connecting rods are connected to movable connecting rods that swing and then press against the surface of the steel pipe. The movable connecting rods have at least two universal balls at the end that contacts the steel pipe. All the fixed connecting rods are locked together to a push plate that slides at the rear end. The push plate has a sliding bearing seat that moves up and down and pushes the movable connecting rods synchronously. The front ends of two fixed connecting rods are locked to movable front bearing seats. Below the front bearing seats, there is a lifting plate that moves up and down close to the processing frame. The end of the front bearing seat and the top of the lifting plate are both connected to positioning pulleys that press against the surface of the steel pipe.

[0015] The steel strip cutting module is equipped with a pneumatic fixing plate, and the pneumatic fixing plate is equipped with pneumatic scissors for cutting steel strips and a pneumatic cylinder for driving the pneumatic scissors.

[0016] The steel belt tension damping module is equipped with a damping fixing plate, which is fitted with two sets of male and female wheels that sequentially press the conveying steel belt. The bottom of the damping fixing plate is equipped with a tension controller connected to one of the female wheels and a damping reducer connected to the other female wheel.

[0017] The steel strip breaking module is equipped with a breaking fixing plate and a steel strip feeder connected to the surface of the breaking fixing plate. There is a breaking inlet for inserting steel strip between the breaking fixing plate and the steel strip feeder. The steel strip transmitted from the steel strip tension damping module is inserted into the breaking inlet. The surface of the steel strip feeder is equipped with a breaking knife for inserting into the steel strip to break it. The breaking fixing plate is connected to a breaking cylinder. A linked breaking rocker arm is connected between the breaking cylinder and the breaking knife.

[0018] The steel strip extrusion module is provided with a lower die frame fixed at the front opening of the processing frame and an upper die frame connected to the top of the lower die frame. The lower die frame is provided with rotating lower die fins, and the upper die frame is provided with upper die fins whose ends are in close contact with the lower die fins and rotate in the opposite direction. The steel strip transmitted from the steel strip breaking module is inserted and extruded between the lower die fins and the upper die fins. After the steel strip is extruded and deformed, it is wound around the outside of the steel pipe. A feeder cover plate connected to the steel strip breaking module is provided between the lower die fins and the upper die fins. The feeder cover plate is provided with at least two positioning pins for adjusting and fixing the position of the steel strip conveying.

[0019] The laser welding module is equipped with an X-axis module fixed on the top of the processing frame and a Y-axis module connected to the top of the X-axis module and moving back and forth. The top of the Y-axis module is connected to a Z-axis fixing plate that moves left and right. The Z-axis fixing plate is connected to a laser head that is welded toward the connection between the steel pipe and the steel strip in the steel strip extrusion module.

[0020] The discharge mechanism is equipped with a discharge frame that is spliced ​​with the processing frame. The surface of the discharge frame is provided with a discharge trolley that slides along one end of the steel pipe. The discharge trolley is connected to a main shaft rotary motor. The output end of the main shaft rotary motor faces the front opening of the processing frame and is connected to a main shaft chuck. The main shaft chuck is provided with at least two jaws that grip the steel pipe and rotate synchronously.

[0021] Furthermore, the top of the pipe rack is provided with at least two forked sections for placing steel pipes, and a steel strip frame is provided below the strip reel, with a drive shaft connected to the top of the steel strip frame to support the operation of the strip reel.

[0022] Furthermore, at least two movable swing arms are connected between the fixed link and the movable link. The surface of the movable link is provided with at least two ball seats for mounting and protruding universal balls. The sliding bearing seat protrudes at both ends after being inserted into the push plate. At least two movable wheels that slide close to the push plate are connected to both ends of the sliding bearing seat.

[0023] Furthermore, the push plate is interspersed with two hollow circular guide rails fixed to the inner wall of the processing frame. A positioning bearing seat with one end fixed to the push plate is sleeved on the outer side of the hollow circular guide rail. The rear end of the processing frame is provided with a dual-drive adjustable cylinder that drives the positioning bearing seat to move. The front end of the processing frame is provided with a lifting guide rail connected to the lifting plate. The bottom of the processing frame is provided with a first motor that drives and controls the movement of the lifting plate.

[0024] Furthermore, the pneumatic fixing plate has a cutting inlet for inserting steel strips on one side, and the pneumatic scissors also have a discharge port on one side.

[0025] Furthermore, two damping cylinders that drive and control the corresponding male wheel are provided on one side of the damping fixing plate.

[0026] Furthermore, the steel strip feeder has a cutting edge position at the insertion point of the cutting blade that communicates with the cutting inlet.

[0027] Furthermore, the lower mold frame is provided with a lower mold fixing ring that rotates synchronously with the lower mold fins after being fixed inside the lower mold frame. Multiple beads are provided between the lower mold fixing ring and the lower mold frame. A second motor is provided at the bottom of the processing frame to drive and control the height of the lower mold frame.

[0028] Furthermore, the spindle chuck is provided with at least two slots for placing jaws, and a crossbar is provided in the slots for inserting the jaws.

[0029] Furthermore, the surface of the discharge frame is provided with two discharge guide rails connected to the discharge trolley and a discharge rack located inside the two discharge guide rails. The bottom of the discharge trolley is connected to a drive control pitch motor, and at least one meshing gear is connected between the output end of the pitch motor and the discharge rack.

[0030] Compared with the prior art, the beneficial effects of the present invention are:

[0031] The equipment provided by this invention consists of multiple functional modules that sequentially process steel strips and weld and fix them to steel pipes. It not only strengthens the atomic density and hardness of the steel strip through extrusion, preventing wrinkles from forming after deformation, but also makes the steel strip wound on the surface of the steel pipe more stable, improving the stability of the entire spiral finned tube and enhancing the performance of the heat exchange tube during use. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram of the pipe rack structure according to an embodiment of the present invention;

[0034] Figure 3 This is a schematic diagram of the disk-type structure according to an embodiment of the present invention;

[0035] Figure 4 This is a first schematic diagram of the overall structure of the processing mechanism according to an embodiment of the present invention;

[0036] Figure 5 This is a second schematic diagram of the overall structure of the processing mechanism according to an embodiment of the present invention;

[0037] Figure 6 This is a schematic diagram of the overall structure of the steel pipe clamping module according to an embodiment of the present invention;

[0038] Figure 7 This is a schematic diagram of the internal structure of the steel pipe clamping module according to an embodiment of the present invention;

[0039] Figure 8 This is a schematic diagram of the overall structure of the steel strip cutting module according to an embodiment of the present invention;

[0040] Figure 9 This is a schematic diagram of the structure after the steel strip is cut at the beginning according to an embodiment of the present invention;

[0041] Figure 10 This is a schematic diagram of the overall structure of the steel strip tension damping module according to an embodiment of the present invention;

[0042] Figure 11 This is a first schematic diagram of the overall structure of the steel strip breaking module according to an embodiment of the present invention;

[0043] Figure 12 This is a second schematic diagram of the overall structure of the steel strip breaking module according to an embodiment of the present invention;

[0044] Figure 13 This is a schematic diagram of the overall structure of the laser welding module according to an embodiment of the present invention;

[0045] Figure 14 This is a first schematic diagram of the connection structure of the steel strip extrusion module according to an embodiment of the present invention;

[0046] Figure 15 This is a second schematic diagram of the steel strip extrusion module connection structure according to an embodiment of the present invention;

[0047] Figure 16 This is a first schematic diagram of the interior of the steel strip extrusion module according to an embodiment of the present invention;

[0048] Figure 17 This is a second schematic diagram of the interior of the steel strip extrusion module according to an embodiment of the present invention;

[0049] Figure 18 This is a third schematic diagram of the interior of the steel strip extrusion module according to an embodiment of the present invention;

[0050] Figure 19 This is a schematic diagram of the overall structure of the discharge mechanism according to an embodiment of the present invention;

[0051] Figure 20 This is an embodiment of the present invention. Figure 19 Enlarged structural diagram of section A;

[0052] Figure 21 This is a schematic diagram of the internal structure of the discharge mechanism according to an embodiment of the present invention;

[0053] Numbering on the map:

[0054] 1-Feeding mechanism, 2-Processing mechanism, 3-Discharging mechanism, 4-Steel pipe, 5-Steel strip;

[0055] 101-Pipe rack, 102-Belt reel, 103-Bifurcation section, 104-Steel belt frame, 105-Drive shaft;

[0056] 201-Panel, 202-Processing rack, 203-Steel pipe clamping module, 204-Steel strip cutting module, 205-Steel strip tension damping module, 206-Steel strip breaking module, 207-Steel strip extrusion module, 208-Laser welding module;

[0057] 301-Discharge frame, 302-Discharge trolley, 303-Main spindle rotation motor, 304-Main spindle chuck, 305-Claw, 306-Claw slot, 307-Horizontal bar, 308-Discharge guide rail, 309-Discharge rack, 310-Pitch motor, 311-Gear;

[0058] 3001-Fixed link, 3002-Modible link, 3003-Universal ball, 3004-Push plate, 3005-Sliding bearing seat, 3006-Front end bearing seat, 3007-Lifting plate, 3008-Positioning pulley, 3009-Modible swing arm, 3010-Ball seat, 3011-Modible wheel, 3012-Hollow circular guide rail, 3013-Positioning bearing seat, 3014-Dual drive adjustable cylinder, 3015-Lifting guide rail, 3016-First motor;

[0059] 4001-Pneumatic fixing plate, 4002-Pneumatic shears, 4003-Pneumatic cylinder, 4004-Cutting inlet, 4005-Discharge port;

[0060] 5001-Damping fixing plate, 5002-Male wheel, 5003-Female wheel, 5004-Tension controller, 5005-Damping reducer, 5006-Damping cylinder;

[0061] 6001 - Break the fixed plate; 6002 - Steel strip feeder; 6003 - Break the inlet; 6004 - Break the blade; 6005 - Break the cylinder; 6006 - Break the rocker arm; 6007 - Blade position.

[0062] 7001-Lower mold frame, 7002-Upper mold frame, 7003-Lower mold fin, 7004-Upper mold fin, 7005-Feeder cover plate, 7006-Positioning pin, 7007-Lower mold retaining ring, 7008-Ball, 7009-Second motor;

[0063] 8001-X-axis module, 8002-Y-axis module, 8003-Z-axis mounting plate, 8004-laser head. Detailed Implementation

[0064] 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, and 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.

[0065] like Figure 1 As shown, this invention provides a solid steel strip 3D high-speed spiral extrusion atomic flow laser welding equipment, including a feeding mechanism 1, a processing mechanism 2, and a discharging mechanism 3. The entire equipment is mainly composed of three major mechanisms, which complement and cooperate with each other. During operation, the feeding mechanism 1 mainly feeds steel pipes 4 and steel strips 5 to the processing mechanism 2. The processing mechanism 2 processes the steel pipes 4 and steel strips 5 fed by the feeding mechanism 1. After adjusting the position of the steel pipes 4 and steel strips 5, the steel strips 5 are deformed and wound around the outside of the steel pipes 4 by extrusion, and then welded and fixed. Since the steel strips 5 need to be fixed in a spiral shape on the outside of the steel pipes 4, the discharging mechanism 3 also needs to pull the steel pipes 4 to slide while welding, and rotate the steel pipes 4 at a uniform speed until the steel strips 5 are welded on the outside of the steel pipes 4, thus completing the entire spiral finned tube.

[0066] like Figure 2 As shown, the feeding mechanism 1 is provided with a pipe rack 101 for placing the steel pipe 4 facing one end of the processing mechanism 2. The steel pipe 4 is placed on the pipe rack 101, with one end facing the opening of the processing frame 202. A male fork 103 distributed in a V shape at the top of the pipe rack 101 is provided to facilitate the placement of the steel pipe 4 and also to prevent the steel pipe 4 from jumping during high-speed welding.

[0067] like Figure 3 As shown, the feeding mechanism 1 is also provided with a reel 102 for placing and conveying the steel strip 5 to one end of the processing mechanism 2. The reel 102 consists of upper and lower parts. After the upper part is disassembled, the rolled steel strip 5 is placed in and then reassembled. At this time, the upper and lower parts of the reel 102 rotate synchronously with the steel strip 5, which can effectively prevent the steel strip 5 from scattering. A steel strip frame 104 is set below the reel 102 for support and fixation. The steel strip frame 104 and the reel 102 are connected by a drive shaft 105. The reel 102 rotates freely on the steel strip frame 104 by relying on the drive shaft 105. The drive shaft 105 can also act as a brake, effectively preventing the steel strip 5 from rotating randomly.

[0068] like Figure 4-5As shown, the processing mechanism 2 includes a panel 201 and a processing frame 202 fixed to the surface of the panel 201. The processing frame 202 has openings at both its front and rear ends. The steel pipe 4 on the pipe rack 101 is inserted from the rear opening of the processing frame 202 and extends to the front opening. The processing frame 202 is also connected to a steel pipe clamping module 203, a steel strip cutting module 204, a steel strip tension damping module 205, a steel strip breaking module 206, a steel strip extrusion module 207, and a laser welding module 208. This processing mechanism 2, as the core part of the overall equipment, simultaneously assembles multiple functional modules for processing steel pipes 4 and steel strips 5 on the processing frame 202. The steel pipe clamping module 203 is mainly used to clamp the steel pipe 4 inside the processing frame 202. Clamping the steel pipe 4 is only for calibrating its processing position. Under the clamping of 203, it can also be pushed forward. The steel strip cutting module 204 is mainly used to cut the steel strip 5 into a specified shape, so that the resistance of the laser spot welding start can be reduced during the welding of the steel strip 5, making it easier to start. The steel strip tension damping module 205 is installed on the side of the processing frame 202 and is mainly used to automatically adjust the force of pressing the steel strip 5. Pressing the steel strip 5 provides a uniform and automatically controllable reaction force. The steel strip breaking module 206 is mainly used to automatically break the steel strip 5 after the finned tube is welded to a specified length by the CNC system. The steel strip extrusion module 207 is mainly used to achieve atomic flow extrusion of the steel strip 5 through the lower die fin 7003 and the upper die fin 7004, so that the extruded steel strip 5 can be wound around the side of the steel pipe 4. The laser welding module 208 is mainly used to weld the extruded steel strip 5 to the surface of the steel pipe 4.

[0069] like Figure 6-7As shown, the steel pipe clamping module 203 has three fixed connecting rods 3001 fixed to the inner wall of the processing frame 202 along the extension direction of the steel pipe 4. The fixed connecting rods 3001 are connected to movable connecting rods 3002 that swing and fit tightly against the surface of the steel pipe 4. The movable connecting rod 3002 has at least two universal balls 3003 at the end that contacts the steel pipe 4. The steel pipe clamping module 203 includes front and rear ends to clamp the steel pipe 4 in the processing frame 202, and the rear end is clamped by the movable connecting rod 3002 that swings on the surface of the fixed connecting rods 3001. The movable connecting rod 3002 is equipped with universal balls 3003 to facilitate the movement of the steel pipe 4. The three fixed connecting rods 3001 are distributed around the steel pipe 4, so that the movable connecting rods 3001 can fit tightly against the surface of the fixed connecting rods 3001. 002 clamps the steel pipe 4 from different directions. Two movable swing arms 3009 are provided between the fixed connecting rod 3001 and the movable connecting rod 3002. When the movable swing arm 3009 moves forward, the movable connecting rod 3002 contacts the steel pipe 4. When the movable swing arm 3009 moves backward, the movable connecting rod 3002 disengages from the steel pipe 4. This structure can clamp steel pipes of different diameters. Moreover, since the welded steel pipe 5 is up to 18 meters long, it needs to be clamped firmly. In addition, a ball seat 3010 for placing the universal ball 3003 is provided at the position where the movable connecting rod 3002 connects to the universal ball 3003. The ball seat 3010 is provided with a groove for placing and allowing the universal ball 3003 to rotate freely.

[0070] All the fixed connecting rods 3001 are connected to the push plate 3004 that slides at the rear end. The push plate 3004 has a sliding bearing seat 3005 that moves up and down and synchronously pushes the movable connecting rod 3002. The sliding bearing seat 3005 is connected between the push plate 3004 and the movable connecting rod 3002. The push plate 3004 moves back and forth, which drives the movable connecting rod 3002 to rise and fall and contact or disengage from the steel pipe 4. The sliding bearing seat 3005 is inserted into the push plate 3004 and moves up and down synchronously with the movable connecting rod 3002. After the sliding bearing seat 3005 is inserted into the push plate 3004, its two ends protrude. Two movable wheels 3011 that slide close to the push plate 3004 are connected to the protruding ends, making the movement smoother.

[0071] The push plate 3004 is interspersed with two hollow circular guide rails 3012 fixed to the inner wall of the processing frame 202. A positioning bearing seat 3013 with one end fixed to the push plate 3004 is sleeved on the outer side of the hollow circular guide rail 3012. The rear end of the processing frame 202 is provided with a dual-drive adjustable cylinder 3014 that drives the positioning bearing seat 3013 to move. The positioning bearing seat 3013, which moves back and forth on the surface of the hollow circular guide rail 3012, synchronously drives the push plate 3004 to move back and forth. The surface of the hollow circular guide rail 3012 is provided with a groove that communicates with the interior. The inner side of the positioning bearing seat 3013 is provided with a connecting rod that moves within the groove. The dual-drive adjustable cylinder 3014 located at the rear end extends into the interior of the hollow circular guide rail 3012 and connects with the connecting rod to control the positioning bearing seat 3013 to move back and forth, synchronously driving the push plate 3004 to move.

[0072] Two fixed connecting rods 3001 have movable front bearing seats 3006 at their front ends. Below the front bearing seats 3006 is a lifting plate 3007 that moves up and down close to the processing frame 202. Positioning pulleys 3008, pressing against the surface of the steel pipe 4, are connected to the ends of the front bearing seats 3006 and the top of the lifting plate 3007. The front end clamps the steel pipe 4 in two parts: the upper part is moved by the movable front bearing seats 3006 to allow the positioning pulleys 3008 to contact the surface of the steel pipe 4; the lower part is moved by the lifting plate 3007 to allow the positioning pulleys 3008 to contact the surface of the steel pipe 4. At the bottom of the steel pipe 4, a lifting guide rail 3015 is provided between the lifting plate 3007 and the processing frame 202 for easy sliding. At the bottom of the processing frame 202, a first motor 3016 is provided to drive and control the movement of the lifting plate 3007. Although the three-sided equidistant movable connecting rod 3002 at the rear end can also clamp the steel pipe, a long section of the steel pipe surface is not welded with fins when it is finished. Therefore, a set of positioning pulleys 3008 that grip the pipe from top to bottom should be added to the front end to avoid wasting the pipe. When adjusting, first adjust the position of the rear movable connecting rod 3002, and then adjust the position of the front clamping.

[0073] like Figure 8 As shown, the steel strip cutting module 204 is equipped with a pneumatic fixing plate 4001. The pneumatic fixing plate 4001 is fitted with pneumatic scissors 4002 for cutting the steel strip 5 and a pneumatic cylinder 4003 for driving the pneumatic scissors 4002. Before the steel strip 5 enters the steel strip tension damping module 205, one end needs to be cut. A cutting inlet 4004 for inserting the steel strip 5 is provided on one side of the pneumatic fixing plate 4001. The user inserts the steel strip 5 into the cutting inlet 4004, and the pneumatic scissors 4002 automatically completes the cutting. The waste material cut off from the steel strip 5 is discharged from the discharge port 4005 on one side of the pneumatic scissors 4002. The shape of the cut steel strip is as follows: Figure 9As shown, the steel strip 5 of this structure is cut into a wedge shape, which can reduce the resistance of laser spot welding initiation and facilitate laser spot welding initiation. If it is not cut, the starting resistance will be very large when the steel strip 5 is too wide.

[0074] like Figure 10 As shown, the steel belt tension damping module 205 is equipped with a damping fixing plate 5001. The damping fixing plate 5001 is fitted with two sets of male rollers 5002 and female rollers 5003 that sequentially press and convey the steel belt 5. The bottom of the damping fixing plate 5001 is equipped with a tension controller 5004 connected to one of the female rollers 5003 and a damping reducer 5005 connected to the other female roller 5003. The steel belt 5 is transmitted sequentially through the two sets of male rollers 5002 and female rollers 5003. The female roller 5003 that first contacts the steel belt 5 is connected to the tension controller 5004. The tension controller 5004 is a microcomputer-controlled tension controller that can set the reciprocating motion of the steel belt 5. The force applied determines the contact between the female wheel 5003 and the steel belt 5, which is connected to the damping reducer 5005. This further increases the reaction force during the welding of the steel belt 5. Both the male wheel 5002 and the female wheel 5003 are made of DC53 steel with a hardness of HR63. Two damping cylinders 5006 are also installed at the rear end of the damping fixing plate 5001 to control the corresponding male wheel 5002. These damping cylinders 5006 are used to press the conveyed steel belt 5. The size of the cylinder can be adjusted. At the same time, when the steel belt 5 is squeezed to form a finned ring, a reaction force is generated. The microcomputer-controlled tension controller 5004 can counteract the reaction force, otherwise wrinkles or creases will be generated.

[0075] like Figure 11-12 As shown, the steel strip breaking module 206 includes a breaking fixing plate 6001 and a steel strip feeder 6002 connected to the surface of the breaking fixing plate 6001. A breaking inlet 6003 for inserting steel strip 5 is provided between the breaking fixing plate 6001 and the steel strip feeder 6002. The breaking inlet 6003 inserts the steel strip 5 transmitted from the steel strip tension damping module 205. A breaking blade 6004 for inserting and breaking the steel strip 5 is provided on the surface of the steel strip feeder 6002. The breaking fixing plate 6001 is connected to the breaking... The cylinder 6005 is connected to the cutting blade 6004 by a linked cutting rocker arm 6006. When the finned tube inside the processing frame 202 is welded to the specified length, the CNC system will issue a cutting command. At this time, the cutting cylinder 6005 controls the cutting blade 6004 to automatically cut the conveyed steel strip 5. The part of the steel strip 5 that continues to be welded after it is cut will continue to be welded. At the position where the steel strip feeder 6002 is inserted into the cutting blade 6004, there is a blade position 6007 that is connected to the cutting port 6003.

[0076] like Figure 13As shown, the laser welding module 208 includes an X-axis module 8001 fixed to the top of the processing frame 202 and a Y-axis module 8002 connected to the top of the X-axis module 8001 and movable back and forth. A Z-axis fixing plate 8003, movable left and right, is connected to the top of the Y-axis module 8002. A laser head 8004 is connected to the Z-axis fixing plate 8003 for welding towards the connection point between the steel pipe 4 and the steel strip 5 inside the steel strip extrusion module 207. During welding, the laser head 8004 needs to be adjusted to the designated welding position. Before welding, the X-axis module 8001 and the Y-axis module 8002 adjust the positions of the X and Y axes until the welding point reaches the contact point between the steel pipe 4 and the steel strip 5 inside the processing frame 202. Welding includes starting the welding of the steel strip 5 onto the steel pipe 4 and... Under normal welding conditions, when starting welding of steel strip 5, the starting welding position is set at the tangent point directly above steel pipe 4. The lower die fin 7003 and upper die fin 7004 of the steel strip extrusion module 207 do not contact steel pipe 5 and are moved to a range of 2-3 mm away from the welding position to avoid the laser burning the die fins during the starting process. After the starting process is completed, the lower die fin 7003 and upper die fin 7004 can normally contact steel pipe 4 at the welding position for high-speed welding. The high-speed welding position is set at a counterclockwise angle of 30-90 degrees away from the tangent point directly above. The welding head is installed in the self-developed 5-axis CNC system, so the zero-point start position of the laser welding point and the zero-point position of the high-speed welding can be well controlled through the X-axis module 8001 and Y-axis module 8002.

[0077] like Figure 14-18 As shown, the steel strip extrusion module 207 includes a lower die frame 7001 fixed at the front opening of the processing frame 202 and an upper die frame 7002 connected to the top of the lower die frame 7001. The lower die frame 7001 contains rotating lower die fins 7003, and the upper die frame 7002 contains upper die fins 7004 whose ends are in close contact with the lower die fins 7003 and rotate in the opposite direction. A steel strip 5, transmitted from the steel strip breaking module 206, is inserted and deformed between the lower die fins 7003 and the upper die fins 7004. After being deformed, the steel strip 5 is wound around the outside of the steel pipe 4. Both the upper die fin 7004 and the lower die fin 7003 are circular and are respectively located in the corresponding die frame. The upper die frame 7002 is equipped with a power motor that drives and controls the rotation of the upper die fin 7004, while the lower die fin 7003, which is in contact with the upper die fin 7004, rotates in the opposite direction. While rotating relative to each other, a space is formed between the two to compress the steel strip 5. The atoms inside the steel strip 5 are more closely packed under compression, which increases the hardness of the steel strip 5 after high-speed compression. Moreover, the surface of the steel strip 5 after compression deformation will not have any wrinkles, and the flatness is better. The steel strip 5 is compressed and deformed and wrapped around the outside of the steel pipe 4, and is tangentially above the steel pipe 4.

[0078] The lower mold frame 7001 has a lower mold fixing ring 7007 that rotates synchronously with the lower mold fins 7003 after being fixed. A plurality of beads 7008 are provided between the lower mold fixing ring 7007 and the lower mold frame 7001. In order for the lower mold fins 7003 to rotate freely, beads 7008 are added inside the lower mold fixing ring 7007 and placed around the lower mold fins 7003. The beads 7008 reduce friction and facilitate rotation.

[0079] The bottom of the processing frame 202 is equipped with a second motor 7009 that drives and controls the height of the lower mold frame 7001. Since there is a step of starting the steel strip 5 on the steel pipe 4 before welding, the second motor 7009 mainly controls the lower mold frame 7001 to rise 2~3MM when the steel strip 5 starts, so that the lower mold fins 7003 and the upper mold fins 7004 are away from the welding position when the steel strip 5 starts. After the steel strip 5 is finished, the second motor 7009 controls the lower mold frame 7001 to reset and continue to complete the subsequent welding work.

[0080] A feeder cover plate 7005, which connects to the steel strip breaking module 206, is provided between the lower die fin 7003 and the upper die fin 7004. The feeder cover plate 7005 is provided with at least two positioning pins 7006 for adjusting and fixing the conveying position of the steel strip 5. After the steel strip 5 is transmitted from the steel strip breaking module 206, its position needs to be adjusted by the feeder cover plate 7005 before entering between the lower die fin 7003 and the upper die fin 7004. After the feeder cover plate 7005 is fixed, an insertion port for inserting the steel strip 5 is provided on the rear side. The user can also move the positioning pins 7006 on the feeder cover plate 7005 to clamp the steel strip 5 according to the width of the steel strip 5, which can meet the needs of steel strips 5 of different widths.

[0081] like Figure 19-21 As shown, the discharge mechanism 3 is equipped with a discharge frame 301 spliced ​​with the processing frame 202. The surface of the discharge frame 301 is provided with a discharge trolley 302 that slides along one end of the steel pipe 4. The discharge trolley 302 is connected to a main shaft rotary motor 303. The output end of the main shaft rotary motor 303 faces the front opening of the processing frame 202 and is connected to a main shaft chuck 304. The main shaft chuck 304 is provided with at least two jaws 305 that grip the steel pipe 4 and rotate synchronously. The surface of the discharge frame 301 is covered with a steel plate. The discharge guide rail 308 and the discharge rack 309 are both installed on the steel plate. When the steel pipe 4 and the steel strip 5 are welded, two actions need to be performed simultaneously. These two actions include rotating the steel pipe 4 and pulling it out at a constant speed after being pulled to one end of the discharge mechanism 3. As the jaws 305 clamp the steel pipe 4, the main shaft rotary motor 303 rotates the steel pipe 4, and the discharge trolley 302 slides out the steel pipe 4 synchronously.

[0082] The spindle chuck 304 is provided with at least two slots 306 for placing jaws 305. A crossbar 307 is provided in the slots 306 to insert the jaws 305. The jaws 305 on the spindle chuck 304 are distributed around the perimeter and clamp the steel pipe 4 by manual pressing. The jaws 305 clamping the steel pipe 4 are provided with teeth to enhance the clamping effect on the steel pipe 4.

[0083] The surface of the discharge frame 301 is provided with two discharge guide rails 308 connected to the discharge trolley 302 and a discharge rack 309 located inside the two discharge guide rails 308. The bottom of the discharge trolley 302 is connected to a drive control pitch motor 310. The output end of the pitch motor 310 is connected to the discharge rack 309 with two meshing gears 311. The speed at which the discharge trolley 302 slides on the discharge guide rails 308 is controlled by the pitch motor 310. The two gears 311 include a first gear connected to the pitch motor 310 and a second gear clamped between the first gear and the discharge rack 309 and meshing with it. The movement of the discharge trolley 302 is achieved through the linkage between the two gears and the discharge rack 309.

[0084] In the process of execution, the equipment provided by this technical solution involves the steel strip 5 being taken out from the reel 102 and inserted into the steel strip cutting module 204, where it is cut into a specified shape by pneumatic shears 4002. After being cut, the steel strip 5 is taken out and passes through the steel strip tension damping module 205 and the steel strip breaking module 206 in sequence. Then, it is conveyed to the steel strip extrusion module 207 through the steel strip feeder 6002. After being extruded and deformed between the lower die fin 7003 and the upper die fin 7004, it is positioned tangentially above the steel pipe 4. The extruded steel strip is 100% rolled into a three-dimensional spiral fin ring. Then, the steps of starting welding and high-speed welding are completed in sequence. After the complete finned tube is welded, the steel strip breaking module 206 breaks the steel strip 5, and the spiral finned tube is directly removed after welding. Then, it is reset and continues to work.

[0085] As can be seen from the above, the equipment provided by this technical solution consists of multiple functional modules that process the steel strip 5 and weld it to the steel pipe 4 in sequence. This not only strengthens the density of the atoms inside the steel strip 5 and increases the hardness of the steel strip 5 by extrusion, thus preventing wrinkles from appearing after the steel strip 5 is deformed, but also makes the steel strip 5 wrapped around the surface of the steel pipe 4 more stable, improving the stability of the entire spiral finned tube and enhancing the performance of the heat exchange tube during use.

[0086] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A solid-state steel strip 3D high-speed spiral extrusion atomic flow laser welding equipment, comprising a feeding mechanism, a processing mechanism, and a discharging mechanism, characterized in that: The feeding mechanism is provided with a pipe rack for placing steel pipes toward one end of the processing mechanism, and the feeding mechanism is also provided with a belt reel for placing and conveying steel strips to one end of the processing mechanism. The processing mechanism is equipped with a panel and a processing frame fixed on the surface of the panel. The processing frame has holes at both ends. The steel pipe on the pipe frame is inserted from the hole at the rear end of the processing frame and extends to the hole at the front end. The processing frame is also connected to a steel pipe clamping module, a steel strip cutting module, a steel strip tension damping module, a steel strip breaking module, a steel strip extrusion module, and a laser welding module. The steel pipe clamping module is provided with three fixed connecting rods fixed to the inner wall of the processing frame along the extension direction of the steel pipe. The fixed connecting rods are connected to movable connecting rods that swing and then press against the surface of the steel pipe. The movable connecting rods have at least two universal balls at the end that contacts the steel pipe. All the fixed connecting rods are locked together to a push plate that slides at the rear end. The push plate has a sliding bearing seat that moves up and down and pushes the movable connecting rods synchronously. The front ends of two fixed connecting rods are locked to movable front bearing seats. Below the front bearing seats, there is a lifting plate that moves up and down close to the processing frame. The end of the front bearing seat and the top of the lifting plate are both connected to positioning pulleys that press against the surface of the steel pipe. The steel strip cutting module is equipped with a pneumatic fixing plate, and the pneumatic fixing plate is equipped with pneumatic scissors for cutting steel strips and a pneumatic cylinder for driving the pneumatic scissors. The steel belt tension damping module is equipped with a damping fixing plate, which is fitted with two sets of male and female wheels that sequentially press the conveying steel belt. The bottom of the damping fixing plate is equipped with a tension controller connected to one of the female wheels and a damping reducer connected to the other female wheel. The steel strip breaking module is equipped with a breaking fixing plate and a steel strip feeder connected to the surface of the breaking fixing plate. There is a breaking inlet for inserting steel strip between the breaking fixing plate and the steel strip feeder. The steel strip transmitted from the steel strip tension damping module is inserted into the breaking inlet. The surface of the steel strip feeder is equipped with a breaking knife for inserting into the steel strip to break it. The breaking fixing plate is connected to a breaking cylinder. A linked breaking rocker arm is connected between the breaking cylinder and the breaking knife. The steel strip extrusion module is provided with a lower die frame fixed at the front opening of the processing frame and an upper die frame connected to the top of the lower die frame. The lower die frame is provided with rotating lower die fins, and the upper die frame is provided with upper die fins whose ends are in close contact with the lower die fins and rotate in the opposite direction. The steel strip transmitted from the steel strip breaking module is inserted and extruded between the lower die fins and the upper die fins. After the steel strip is extruded and deformed, it is wound around the outside of the steel pipe. A feeder cover plate connected to the steel strip breaking module is provided between the lower die fins and the upper die fins. The feeder cover plate is provided with at least two positioning pins for adjusting and fixing the position of the steel strip conveying. The laser welding module is equipped with an X-axis module fixed on the top of the processing frame and a Y-axis module connected to the top of the X-axis module and moving back and forth. The top of the Y-axis module is connected to a Z-axis fixing plate that moves left and right. The Z-axis fixing plate is connected to a laser head that is welded toward the connection between the steel pipe and the steel strip in the steel strip extrusion module. The discharge mechanism is equipped with a discharge frame that is spliced ​​with the processing frame. The surface of the discharge frame is provided with a discharge trolley that slides along one end of the steel pipe. The discharge trolley is connected to a main shaft rotary motor. The output end of the main shaft rotary motor faces the front opening of the processing frame and is connected to a main shaft chuck. The main shaft chuck is provided with at least two jaws that grip the steel pipe and rotate synchronously.

2. The solid steel strip 3D high-speed spiral extrusion atomic flow laser welding equipment according to claim 1, characterized in that: The top of the pipe rack is provided with at least two forked sections for placing steel pipes, and a steel strip frame is provided below the strip reel. The top of the steel strip frame is connected to a drive shaft that supports the operation of the strip reel.

3. The solid steel strip 3D high-speed spiral extrusion atomic flow laser welding equipment according to claim 1, characterized in that: At least two movable swing arms are connected between the fixed link and the movable link. The surface of the movable link is provided with at least two ball seats that hold and protrude universal balls. The sliding bearing seat protrudes at both ends after being inserted into the push plate. At least two movable wheels that slide close to the push plate are connected to both ends of the sliding bearing seat.

4. The solid steel strip 3D high-speed spiral extrusion atomic flow laser welding equipment according to claim 1 or 3, characterized in that: The push plate is interspersed with two hollow circular guide rails fixed to the inner wall of the processing frame. A positioning bearing seat with one end fixed to the push plate is sleeved on the outer side of the hollow circular guide rail. The rear end of the processing frame is provided with a dual-drive adjustable cylinder that drives the positioning bearing seat to move. The front end of the processing frame is provided with a lifting guide rail connected to the lifting plate. The bottom of the processing frame is provided with a first motor that drives and controls the movement of the lifting plate.

5. The solid steel strip 3D high-speed spiral extrusion atomic flow laser welding equipment according to claim 1, characterized in that: The pneumatic fixing plate has a cutting inlet for inserting steel strips on one side, and the pneumatic scissors also have a feeding port on one side.

6. The solid steel strip 3D high-speed spiral extrusion atomic flow laser welding equipment according to claim 1, characterized in that: Two damping cylinders that drive and control the corresponding male wheel are provided on one side of the damping fixing plate.

7. The solid steel strip 3D high-speed spiral extrusion atomic flow laser welding equipment according to claim 1, characterized in that: The steel strip feeder has a cutting edge position at the insertion point of the cutting blade that is connected to the cutting inlet.

8. The solid steel strip 3D high-speed spiral extrusion atomic flow laser welding equipment according to claim 1, characterized in that: The lower mold frame is provided with a lower mold fixing ring that rotates synchronously with the lower mold fins after being fixed on the inner side. Multiple beads are provided between the lower mold fixing ring and the lower mold frame. The bottom of the processing frame is provided with a second motor that drives and controls the height of the lower mold frame.

9. The solid-state steel strip 3D high-speed spiral extrusion atomic flow laser welding equipment according to claim 1, characterized in that: The spindle chuck is provided with at least two slots for placing jaws, and a crossbar is provided in the slots to insert the jaws.

10. The solid steel strip 3D high-speed spiral extrusion atomic flow laser welding equipment according to claim 1 or 9, characterized in that: The surface of the discharge frame is provided with two discharge guide rails connected to the discharge trolley and a discharge rack located inside the two discharge guide rails. The bottom of the discharge trolley is connected to a drive control pitch motor, and at least one meshing gear is connected between the output end of the pitch motor and the discharge rack.

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