Automatic pipe penetrating work platform for large radiator

Abstract

The application discloses a large radiator automatic pipe penetrating work platform and belongs to the technical field of fin pipe penetrating. The work platform comprises a workbench, a lifting platform, a carrier plate frame, a pipe material conveying unit and a pipe penetrating mechanism. An installation groove is formed in one side end face of the workbench, and the lifting platform is arranged at the installation groove. The pipe material conveying unit is arranged on one side of the lifting platform on the workbench. One side of the pipe material conveying unit is provided with a pipe feeding station, and a pipe pressing positioning mechanism is further arranged in the pipe material conveying unit. The pipe penetrating mechanism is arranged on the other side of the upper end face of the workbench and is arranged in the same plane with the pipe pressing positioning mechanism. In the application, the lifting platform is used to lift the fins to a specified height. The mainly arranged flexible top pipe unit can be instantaneously paused when the resistance in the pipe penetrating process exceeds the threshold value, so that the impact damage in the pipe penetrating process is avoided, manual intervention is not needed, and automatic pipe penetrating is realized.

Description

Technical Field

[0001] This invention belongs to the field of finned tube insertion technology, specifically an automatic tube insertion platform for large radiators. Background Technology

[0002] Currently used tube-threading workbenches mostly involve placing different shims on a metal table to adjust the height of the fins relative to the workbench. Traditional positioning and tube-threading equipment is typically designed for heat sink fins of specific specifications (such as fixed height and fixed hole diameter). When product specifications (such as fin height and positioning hole position) change, frequent replacement of shims and tooling fixtures, or even equipment replacement, is required, leading to low production efficiency and an inability to flexibly adapt to the needs of small-batch, multi-variety production. Furthermore, during the tube-threading process, forcibly inserting the heat sink tube into the interference fit hole of the heat sink fin may generate significant resistance due to incomplete hole alignment, burrs, or minor deformation. Traditional rigid jacking systems apply continuous force, easily causing the heat sink tube to bend, crush, or scratch the heat sink fins, resulting in product scrap. This often requires operator intervention for manual adjustment, tapping, or realignment, which is not only inefficient but also relies heavily on manual experience. Therefore, it is necessary to provide a large-scale automated tube-threading work platform for heat sinks to solve the problems mentioned in the background. Summary of the Invention

[0003] To achieve the above objectives, the present invention provides the following technical solution: an automatic tube-threading platform for large radiators, comprising a workbench, a lifting platform, a carrier frame, a tube conveying unit, and a tube-threading mechanism; an installation slot is provided on one side of the workbench, a lifting platform is provided at the installation slot, and a carrier frame is mounted on the upper end of the lifting platform; an end plate is vertically fixed on the side of the workbench near the lifting platform, a transfer frame is horizontally fixed on the outer side wall of the end plate, and multiple guide rods are horizontally slidably installed on the transfer frame; a tube conveying unit is provided on one side of the workbench near the lifting platform, a tube feeding station is provided on one side of the tube conveying unit for arranging and conveying radiator tubes, and a tube pressing and positioning mechanism is also provided in the tube conveying unit; the tube-threading mechanism is located on the other side of the upper end of the workbench and is flush with the tube pressing and positioning mechanism.

[0004] Preferably, the multiple guide rods are arranged one-to-one with the positioning holes at the top of the heat dissipation fins, and a linear guide rail is provided inside the lower part of the workbench, and the lifting platform is slidably assembled on the linear guide rail.

[0005] Preferably, the pipe-insertion mechanism includes a support body, which is vertically fixed on the workbench. A machine plate is vertically slidably mounted on one side of the support body via a slide rail. An assembly frame is provided on one end face of the machine plate. Multiple flexible pipe-insertion units are arranged at equal intervals on the lower end face of the assembly frame, and each flexible pipe-insertion unit is positioned facing the end of the heat dissipation pipe. A threaded screw is vertically mounted on the support body, and the machine plate is slidably mounted on the threaded screw.

[0006] Preferably, a movable plate is installed parallel to the lower end face of the assembly frame, and a cross slide rail is installed on one side of the lower end face of the assembly frame. The movable plate is slidably connected to the assembly frame through the cross slide rail.

[0007] The assembly frame is rotatably connected to a rotating shaft. One end of the rotating shaft is fixed to a linkage plate. A guide groove is provided on the linkage plate. A shaft is vertically fixed on the movable plate. A guide wheel is rotatably connected to the shaft and is slidably installed in the guide groove.

[0008] Preferably, the movable plate is fixed with multiple positioning seats corresponding to the flexible jacking pipe unit. Each positioning seat is coaxially rotatably connected with a threaded guide sleeve. A push rod is threadedly connected inside the threaded guide sleeve. One end of the flexible jacking pipe unit is connected to the push rod. Limiting rods are slidably connected through both sides of the threaded guide sleeve on each positioning seat. A fixing plate is fixed to one end of the push rod away from the flexible jacking pipe unit, and the other end of the limiting rod is fixed to the fixing plate. An external motor is provided outside the positioning seat. The output end of the external motor is connected to the threaded guide sleeve for transmission through gear meshing.

[0009] Preferably, the flexible jacking unit includes a front jacking rod, with a rear jacking rod coaxially mounted at one end. A pusher head is fixed to the other end of the front jacking rod. A shaft plate is fixed to both the front and rear jacking rods, and multiple flexible columns connect the two shaft plates. A pressure plate is fixed to the end of the front jacking rod away from the pusher head, and a support plate is fixed to the end of the rear jacking rod. An outer protective plate is fixed to the support plate in parallel via connecting ribs. The pressure plate is slidably mounted on the connecting ribs and located between the support plate and the outer protective plate. A support spring is sleeved on the connecting ribs between the pressure plate and the support plate.

[0010] Preferably, the pressure plate has an actuating connector at the center of its end face near the support plate, and a pressure sensor is correspondingly provided on the support plate.

[0011] Preferably, a vibration guide sleeve is fixed on the front push rod between the shaft plate and the pressure plate. Multiple clamping blocks corresponding to the flexible rod are radially slidably arranged on the vibration guide sleeve, each clamping block being sleeved outside the flexible rod. A hydraulic ring cavity is formed inside the vibration guide sleeve, and a ring plug is slidably connected to the hydraulic ring cavity. A actuating ring is slidably installed inside the vibration guide sleeve, and the actuating ring is fixed to the ring plug by multiple support rods. A protruding top block is fixed on the actuating ring. A stop block is fixed on each clamping block, and the stop block is in close contact with the protruding top block, with the contact surface being a beveled structure. A liquid channel is formed inside the vibration guide sleeve, and the liquid channel is connected to the hydraulic ring cavity. A pulse tube is sealed to the outside of the liquid channel.

[0012] Preferably, the flexible column is made of a flexible and elastically deformable metal material, and the flexible column is configured with different yield strengths or elastic moduli, so that during the tube insertion process, the flexible column can undergo elastic deformation in response to different radial pressures.

[0013] Preferably, the guide rod has a movable cavity, in which a vibrator slides, and pistons are sealed at both ends of the vibrator; an elastic layer is sleeved on the outside of the guide rod, and the elastic layer is in contact with the inner wall of the positioning hole of the heat dissipation fin.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] In the initial positioning of the heat sink fins in this invention, a lifting platform is used to raise the fins to a designated height, allowing the guide rod on the transfer frame to pass through the positioning holes of the heat sink fins and temporarily position them, thus accommodating heat sink fins of various specifications. The main flexible jacking unit can push the heat sink tube to be inserted and installed between the heat sink fins. During this process, when the system detects that the resistance during the tube insertion process exceeds a threshold, the flexible jacking unit can pause instantly, and the flexible column inside can generate corresponding deformation, thus preventing impact damage during the tube insertion process. As the guide sleeve elastically recovers through the high-frequency control of the clamping block, the heat sink tube can generate a high-frequency axial small-amplitude displacement. At the same time, the vibrator in the guide rod can be moved to the heat sink fin that has not been successfully inserted under the air pressure regulation of the pneumatic control system, and use working vibration to achieve micro-vibration of the heat sink fin body, thereby improving the success rate of secondary tube insertion. No manual intervention is required, realizing automated tube insertion. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the tube-threading mechanism in this invention;

[0018] Figure 3 This is a schematic diagram of the bottom structure of the movable plate in this invention;

[0019] Figure 4 This is a schematic diagram of the flexible pipe jacking unit in this invention;

[0020] Figure 5 This is a schematic diagram of the internal structure of the vibration guide sleeve in this invention;

[0021] Figure 6 This is a schematic diagram of the internal structure of the guide rod in this invention;

[0022] In the diagram: 1. Workbench; 11. Lifting platform; 12. Carrier frame; 13. Pipe conveying unit; 14. Pipe pressing and positioning mechanism; 15. End plate; 2. Transfer frame; 21. Guide rod; 22. Vibrator; 23. Piston; 24. Elastic layer; 3. Pipe threading mechanism; 31. Support body; 32. Machine plate; 33. Assembly frame; 34. Threaded screw; 35. Movable plate; 36. Cross slide rail; 37. Linkage plate; 3 8. Guide wheel; 4. Flexible jacking unit; 41. Front jacking rod; 42. Rear jacking rod; 43. Push head; 44. Shaft plate; 45. Flexible column rod; 5. Positioning seat; 51. Threaded guide sleeve; 52. Push rod; 53. Limiting rod; 6. Pressure plate; 61. Support plate; 62. Outer protective plate; 63. Contact joint; 64. Vibration guide sleeve; 65. Clamping block; 66. Actuating ring; 67. Support rod; 68. Stop block; 69. Liquid channel. Detailed Implementation

[0023] Please see Figures 1-6 In this embodiment of the invention, an automatic tube-threading platform for large radiators includes a workbench 1, a lifting platform 11, a carrier frame 12, a tube conveying unit 13, and a tube-threading mechanism 3. An installation slot is provided on one side of the workbench 1, and the lifting platform 11 is installed at the installation slot. The carrier frame 12 is mounted on the upper surface of the lifting platform 11. An end plate 15 is vertically fixed on the workbench 1 near the lifting platform 11, and a transfer frame 2 is horizontally fixed on the outer wall of the end plate 15. Multiple guide rods 21 are horizontally slidably installed on the transfer frame 2. In this device, the lifting platform 11 replaces the shims, and it can automatically adjust its height to accommodate different specifications of radiator fins. This eliminates the need for workers to climb onto the surface of the workbench 1, and the installation slot allows for easy access for workers, improving safety and work efficiency.

[0024] On the workbench 1, a pipe conveying unit 13 is provided on one side of the lifting platform 11. A pipe feeding station (not shown in the figure) is provided on one side of the pipe conveying unit 13 for arranging and conveying heat dissipation pipes. Multiple heat dissipation pipes to be installed are arranged in sequence at the pipe feeding station. The pipe conveying unit 13 can select a corresponding number of heat dissipation pipes to arrange them into a group. The pipe conveying unit 13 is also provided with a pipe pressing and positioning mechanism 14. The pipe pressing and positioning mechanism 14 can horizontally position a group of heat dissipation pipes so that they correspond one-to-one with the perforations of the heat dissipation fins. The pipe conveying unit 13 is also provided with a lifting mechanism. The lifting mechanism can correspond the perforations at different heights of the heat dissipation pipes during free lifting, thereby realizing the automatic pipe threading operation of the heat dissipation fins.

[0025] The tube insertion mechanism 3 is located on the other side of the upper end face of the workbench 1 and is flush with the tube pressing and positioning mechanism 14. This ensures that the tube insertion mechanism 3 and the heat dissipation tube are on the same horizontal plane, which facilitates the provision of end horizontal thrust to the heat dissipation tube to achieve the tube pushing effect.

[0026] In this embodiment, multiple guide rods 21 are arranged one-to-one with the positioning holes at the top of the heat dissipation fins. The diameter of the guide rod 21 is smaller than the diameter of the positioning hole so that the guide rod 21 can be smoothly pre-inserted into the positioning hole to pre-fix the heat dissipation fins. A linear guide rail is provided at the bottom of the interior of the workbench 1, and the lifting platform 11 is slidably assembled on the linear guide rail. In this way, a heat dissipation plate pre-placement area is set on one side of the workbench 1, and the lifting platform 11 can be adjusted to this area through the linear guide rail to facilitate the transportation of the assembled heat exchanger core to the guide rod 21 position.

[0027] In a preferred embodiment, the tube insertion mechanism 3 includes a support body 31, which is vertically fixed on the workbench 1. A machine plate 32 is vertically slidably mounted on one side of the support body 31 via a slide rail. An assembly frame 33 is provided on one end face of the machine plate 32. Multiple flexible tube-pushing units 4 are arranged at equal intervals on the lower end face of the assembly frame 33. Each flexible tube-pushing unit 4 is positioned facing the end of the heat dissipation tube, so that the multiple flexible tube-pushing units 4 can perform tube-pushing movements synchronously, so that each heat dissipation tube can be inserted along the mounting holes of the heat dissipation fins.

[0028] A threaded screw 34 is vertically mounted on the support body 31, and the machine plate 32 is slidably assembled on the threaded screw 34, thereby enabling precise adjustment of the installation height and facilitating the insertion of pipes into the installation holes at different height positions.

[0029] In this embodiment, a movable plate 35 is mounted parallel to the lower end face of the assembly frame 33, and a cross slide rail 36 is mounted on one side of the lower end face of the assembly frame 33. The movable plate 35 is slidably connected to the assembly frame 33 through the cross slide rail 36, meaning that the movable plate 35 can slide freely in four directions (front, back, left, and right) on a horizontal plane. The cross slide rail 36 is mainly used to connect the movable plate 35 and the assembly frame 33, and it is essentially composed of two sets of mutually perpendicular linear guide rails (X-direction and Y-direction). It allows the movable plate 35 mounted on it to perform translational movement in any direction in the horizontal plane (combination of two linear movements).

[0030] The assembly frame 33 is rotatably connected to a rotating shaft. One end of the rotating shaft is fixed to a linkage plate 37, and a guide groove is provided on the linkage plate 37. A shaft is vertically fixed on the movable plate 35, and a guide wheel 38 is rotatably connected to the shaft. The guide wheel 38 is slidably installed in the guide groove. When the rotating shaft is rotated for adjustment, it can achieve arc-shaped sliding of the movable plate 35 on the horizontal plane through the sliding action of the linkage plate 37 and the guide wheel 38 (ideally, an arc-shaped guide groove is provided on the surface of the assembly frame 33, and the shaft is slidably connected to the arc-shaped guide groove). This facilitates the adjustment of multiple flexible jacking pipe units 4 to simultaneously disengage from or contact the heat dissipation pipes, achieving fine adjustment of the contact surface. At the same time, it can also adjust multiple flexible jacking pipe units 4 to contact different heat dissipation pipes arranged in a row. For example, the heat dissipation pipes in the odd-numbered positions of a group of heat dissipation pipes can be threaded first, and then the heat dissipation pipes in the even-numbered positions can be threaded.

[0031] In this embodiment, a plurality of positioning seats 5 corresponding to the flexible jacking pipe unit 4 are fixed on the movable plate 35. Each positioning seat 5 is coaxially rotatably connected to a threaded guide sleeve 51. A push rod 52 is threadedly connected inside the threaded guide sleeve 51. One end of the flexible jacking pipe unit 4 is connected to the push rod 52.

[0032] Each of the positioning seats 5 has a limiting rod 53 slidably connected through both sides of the threaded guide sleeve 51. The end of the push rod 52 away from the flexible jacking unit 4 is fixed with a fixing plate, and the other end of the limiting rod 53 is fixed with the fixing plate.

[0033] An external motor (not shown in the figure) is provided outside the positioning seat 5. The output end of the external motor is connected to the threaded guide sleeve 51 through gear meshing. In the tube pushing operation, the external motor drives the threaded guide sleeve 51 to rotate continuously under the action of rotation. The threaded guide sleeve 51 controls the push rod 52 to slide towards one end of the heat dissipation tube through the threaded connection, thereby pushing the heat dissipation tube towards the mounting hole of the heat dissipation fins.

[0034] In this embodiment, the flexible jacking unit 4 includes a front jacking rod 41, with a rear jacking rod 42 coaxially arranged at one end. A pusher head 43 is fixed to the other end of the front jacking rod 41. A shaft plate 44 is fixed on both the front jacking rod 41 and the rear jacking rod 42. Multiple flexible rods 45 are connected between the two shaft plates 44. It should be noted that the rear jacking rod 42 and the front jacking rod 41 do not contact each other and are only connected by multiple flexible rods 45. In this way, when the heat dissipation pipe and the heat dissipation fin mounting hole are not fully aligned during the jacking operation, resulting in the inability to pass the pipe normally, the flexible rods 45 can generate elastic deformation. At this time, the horizontal distance between the rear jacking rod 42 and the front jacking rod 41 is shortened.

[0035] The end of the front push rod 41 away from the push head 43 is fixed with a pressure plate 6, and the end of the rear push rod 42 is fixed with a support plate 61. An outer protective plate 62 is fixed parallel to the support plate 61 by a connecting rib. The pressure plate 6 is slidably disposed on the connecting rib and located between the support plate 61 and the outer protective plate 62.

[0036] A support spring is sleeved on the connecting rib between the pressure plate 6 and the support plate 61. Under the action of the elastic force, the pressure plate 6 can slide away from the support plate 61, so that each flexible column 45 can maintain horizontal support when there is no external force.

[0037] In a preferred embodiment, the pressure plate 6 is provided with a contact joint 63 at the center of one end face near the support plate 61, and a pressure sensor (not shown in the figure) is correspondingly provided on the support plate 61. It can monitor the tube insertion pressure in real time. When the resistance during the tube insertion process exceeds the threshold, the external motor can stop instantly, and the flexible column 45 inside can generate corresponding deformation, so as not to cause impact damage during the tube insertion process.

[0038] In this embodiment, a vibration guide sleeve 64 is fixed on the front push rod 41 between the shaft plate 44 and the pressure plate 6. A plurality of clamping blocks 65 corresponding to the flexible column rod 45 are radially slidably arranged on the vibration guide sleeve 64, and each clamping block 65 is sleeved on the flexible column rod 45.

[0039] The vibration guide sleeve 64 has a hydraulic ring cavity, and a ring plug is slidably connected in the hydraulic ring cavity. A deflecting ring 66 is slidably installed in the vibration guide sleeve. The deflecting ring 66 is fixed to the ring plug by multiple support rods 67. A protruding block is fixed on the deflecting ring 66.

[0040] Each clamping block 65 is fixed with a stop block 68, which is in close contact with the convex top block, and the contact surface is set as an inclined structure. In this way, when the actuating ring 66 slides away from the ring plug, the stop block 68 and the convex top block push each clamping block 65 to converge towards the center when they slide in contact, thereby gradually restoring the elastically deformed flexible rod 45. The flexible rod 45 can push the front push rod 41 to generate a forward thrust during the deformation recovery, which facilitates the subsequent push tube to the heat dissipation pipe.

[0041] The guide sleeve 64 has a liquid channel 69 inside, which is connected to the hydraulic ring cavity. The liquid channel 69 is sealed to the outside of a pulse tube. That is, the pulse tube drives the ring plug to move axially back and forth by delivering hydraulic oil at high frequency. At this time, each clamping block 65 can generate radial vibration under the push of the convex top block. Each flexible rod 45 elastically deforms and recovers with the radial vibration of the clamping block 65, thereby achieving the horizontal vibration pushing effect of the front push rod 41. The end of the heat dissipation tube attempts to align with the mounting hole of the heat dissipation fins during horizontal vibration, so that the tube can be re-inserted after the initial tube insertion fails. Compared with the traditional equipment that forcibly pushes, the vibration pushing method of this device has a gentler force and a higher degree of automation.

[0042] In this embodiment, the flexible column 45 is made of a flexible and elastically deformable metal material, and the flexible column 45 is configured with different yield strengths or elastic moduli, so that during the tube insertion process, the flexible column 45 can respond to different radial pressures and undergo elastic deformation in sequence. This configuration is mainly used for the tube insertion operation of the heat dissipation pipe and the first heat dissipation fin. For the tube insertion operation of the first heat dissipation fin, it is very easy to fail due to misalignment of the hole. Therefore, by using flexible columns 45 with different yield strengths or elastic moduli, after tube insertion failure, they can exhibit different bending deformations. In this way, the front push rod 41 can generate a corresponding tilt (i.e., not horizontally distributed). When the vibration guide sleeve 64 is working, the front push rod 41 can generate oblique vibration thrust, causing the heat dissipation pipe to vibrate slightly, thereby improving the success rate of subsequent tube insertion.

[0043] In this embodiment, the guide rod 21 has a movable cavity, in which a vibrator 22 slides. Pistons 23 are sealed at both ends of the vibrator 22. An air control system is configured outside the movable cavity, so that the air pressure of the air control system can regulate the sliding of the vibrator 22 along the axial direction of the movable cavity. An elastic layer 24 is sleeved on the outside of the guide rod 21. The elastic layer 24 is in contact with the inner wall of the positioning hole of the heat sink fin. In this way, when the tube insertion fails, the vibrator 22 in the guide rod 21 can be moved to the heat sink fin where the tube insertion failed under the air pressure regulation of the air control system. The working vibration realizes the micro-vibration of the heat sink fin body. In this way, the mounting hole on the heat sink fin can generate a vertical plane relative movement with respect to the end of the heat sink tube. Combined with the axial vibration of the heat sink tube, the success rate of secondary tube insertion is improved, and automatic tube insertion is achieved without manual intervention.

[0044] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A large-scale radiator automatic pipe threading platform, comprising a workbench (1), a lifting platform (11), a carrier plate frame (12), a pipe conveying unit (13), and a pipe threading mechanism (3); characterized in that, A mounting slot is provided on one side of the workbench (1), and a lifting platform (11) is provided at the mounting slot. A carrier frame (12) is mounted on the upper end of the lifting platform (11). An end plate (15) is vertically fixed on the side of the workbench (1) near the lifting platform (11). A transfer frame (2) is horizontally fixed on the outer side wall of the end plate (15). Multiple guide rods (21) are horizontally slidably installed on the transfer frame (2). A pipe conveying unit (13) is provided on one side of the lifting platform (11) on the workbench (1). A pipe feeding station is provided on one side of the pipe conveying unit (13) for arranging and conveying heat dissipation pipes. A pipe pressing and positioning mechanism (14) is also provided in the pipe conveying unit (13). The tube threading mechanism (3) is located on the other side of the upper end face of the workbench (1) and is flush with the tube pressing and positioning mechanism (14); The pipe-insertion mechanism (3) includes a support body (31), which is vertically fixed on the workbench (1). A machine plate (32) is vertically slidably mounted on one side of the support body (31) via a slide rail. An assembly frame (33) is provided on one end face of the machine plate (32). Multiple flexible jacking pipe units (4) are arranged at equal intervals on the lower end face of the assembly frame (33). Each flexible jacking pipe unit (4) is positioned facing the end of the heat dissipation pipe. The flexible pipe jacking unit (4) includes a front jacking rod (41), one end of which is coaxially provided with a rear jacking rod (42), and the other end of the front jacking rod (41) is fixed with a push head (43). Both the front jacking rod (41) and the rear jacking rod (42) are fixed with shaft plates (44), and multiple flexible columns (45) are connected between the two shaft plates (44). A pressure plate (6) is fixed at the end of the front push rod (41) away from the push head (43), and a bracket plate (61) is fixed at the end of the rear push rod (42). An outer protective plate (62) is fixed on the bracket plate (61) in parallel by a connecting rib. The pressure plate (6) is slidably set on the connecting rib and located between the bracket plate (61) and the outer protective plate (62). A support spring is fitted on the connecting rib between the pressure plate (6) and the support plate (61); A vibration guide sleeve (64) is fixed on the front push rod (41) between the shaft plate (44) and the pressure plate (6). Multiple clamping blocks (65) corresponding to the flexible column rod (45) are radially slidably arranged on the vibration guide sleeve (64), and each clamping block (65) is sleeved on the flexible column rod (45). A hydraulic ring cavity is provided inside the vibration guide sleeve (64), and a ring plug is slidably connected in the hydraulic ring cavity. A deflecting ring (66) is slidably installed inside the vibration guide sleeve (64). The deflecting ring (66) is fixed to the ring plug by multiple support rods (67). A protruding block is fixed on the deflecting ring (66). Each clamp (65) is fixed with a stop (68), the stop (68) is in close contact with the convex top block, and its contact surface is set as an inclined structure; The guide sleeve (64) has a liquid channel (69) inside, which is connected to the hydraulic ring cavity, and a pulse tube is sealed to the outside of the liquid channel (69).

2. The automatic pipe-threading platform for large radiators according to claim 1, characterized in that, Multiple guide rods (21) are provided in a one-to-one correspondence with the positioning holes at the top of the heat dissipation fins, and a linear guide rail is provided inside the lower part of the worktable (1), and the lifting platform (11) is slidably mounted on the linear guide rail.

3. The automatic pipe-threading platform for large radiators according to claim 1, characterized in that, A threaded screw (34) is vertically mounted on the support body (31), and the machine plate (32) is slidably assembled on the threaded screw (34).

4. The automatic pipe-threading platform for large radiators according to claim 3, characterized in that, A movable plate (35) is installed parallel to the lower end face of the assembly frame (33), and a cross slide rail (36) is installed on one side of the lower end face of the assembly frame (33). The movable plate (35) is slidably connected to the assembly frame (33) through the cross slide rail (36). The assembly frame (33) is rotatably connected to a rotating shaft. One end of the rotating shaft is fixed to a linkage plate (37). A guide groove is provided on the linkage plate (37). A shaft is vertically fixed on the movable plate (35). A guide wheel (38) is rotatably connected to the shaft. The guide wheel (38) is slidably installed in the guide groove.

5. The automatic pipe-threading platform for a large radiator according to claim 4, characterized in that, The movable plate (35) is fixed with multiple positioning seats (5) corresponding to the flexible jacking unit (4). Each positioning seat (5) is coaxially rotatably connected with a threaded guide sleeve (51). A push rod (52) is threadedly connected inside the threaded guide sleeve (51). One end of the flexible jacking unit (4) is connected to the push rod (52). Each of the positioning seats (5) has a limit rod (53) slidably connected through both sides of the threaded guide sleeve (51). The end of the push rod (52) away from the flexible jacking unit (4) is fixed with a fixing plate, and the other end of the limit rod (53) is fixed with the fixing plate. An external motor is provided outside the positioning seat (5), and the output end of the external motor is connected to the threaded guide sleeve (51) for transmission through gear meshing.

6. The automatic pipe-threading platform for large radiators according to claim 1, characterized in that, The pressure plate (6) has a contact joint (63) at the center of one end face near the support plate (61), and a pressure sensor is correspondingly provided on the support plate (61).

7. The automatic pipe-threading platform for large radiators according to claim 1, characterized in that, The flexible column (45) is made of a flexible and elastically deformable metal material, and the flexible column (45) is configured to have different yield strengths or elastic moduli, so that during the tube insertion process, the flexible column (45) can undergo elastic deformation in response to different radial pressures.

8. The automatic pipe-threading platform for large radiators according to claim 1, characterized in that, The guide rod (21) has a movable cavity, and a vibrator (22) slides in the movable cavity. Pistons (23) are sealed at both ends of the vibrator (22). An elastic layer (24) is sleeved on the outside of the guide rod (21), and the elastic layer (24) is in contact with the inner wall of the positioning hole of the heat dissipation fin.

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