Fin threading production line

Abstract

The invention discloses a fin threading production line, which relates to the technical field of fin processing, and comprises a workbench, a feeding device and a fin positioning device, the workbench is provided with a feeding station, a fin penetrating station and a discharging station, and the feeding device is arranged on the workbench and used for transferring fins among the feeding station, the fin penetrating station and the discharging station. The fin positioning device comprises a first reference part and a first positioning assembly which are oppositely arranged in the Y-axis direction, and the first positioning assembly is used for moving in the Y-axis direction so as to position a fin to the first reference part. The pipe clamping device is arranged on one side of the workbench and used for clamping and transferring the multiple U-shaped pipes and adjusting the distance between the adjacent U-shaped pipes according to the fin perforating position. The fin penetrating device is arranged on one side of the workbench and corresponds to the fin penetrating station, and the fin penetrating device is used for receiving the U-shaped pipe conveyed by the pipe clamping device and penetrating the U-shaped pipe into the penetrating hole of the fin in the Y-axis direction; according to the technical scheme, the fin penetrating requirements of fins of different specifications can be met.

Description

Technical Field

[0001] This invention relates to the field of fin processing technology, and in particular to a fin threading production line. Background Technology

[0002] Air conditioner heat exchangers have fins with various hole layouts, resulting in complex and varied pipe insertion hole layouts. General automatic fin insertion equipment cannot accommodate such complex fin insertion hole requirements and can only be used with dedicated machines. Summary of the Invention

[0003] The main objective of this invention is to propose a fin threading production line that can adapt to the threading requirements of fins of different specifications.

[0004] To achieve the above objectives, the fin threading production line proposed in this invention includes: The workbench has a loading station, a threading station, and an unloading station; A feeding device is provided on the workbench and is used to transfer the fins between the loading station, the fin threading station and the unloading station. A fin positioning device is provided on the worktable. The fin positioning device includes a first reference member and a first positioning component arranged opposite to each other along the Y-axis direction. The first positioning component is used to move along the Y-axis direction to position the fin on the first reference member. A tube clamping device, located on one side of the workbench, is used to clamp and transfer multiple U-tubes and to adjust the spacing between adjacent U-tubes according to the fin perforation position; and A fin threading device is located on one side of the workbench and is set corresponding to the fin threading station. The fin threading device is used to receive the U-tube transferred by the tube clamping device and insert the U-tube into the perforation of the fin along the Y-axis direction.

[0005] In one embodiment, the tube clamping device includes a first frame, a tube clamping mechanism, and a moving drive assembly. The tube clamping mechanism is movably disposed on the first frame along the X-axis and is drivenly connected to the moving drive assembly. The tube clamping mechanism is used to clamp multiple U-tubes, and the moving drive assembly is used to drive the tube clamping mechanism to move along the X-axis to transfer the clamped multiple U-tubes to the inserting device. The X-axis intersects the Y-axis.

[0006] In one embodiment, the tube clamping mechanism includes a mounting frame and a plurality of clamping modules. Each clamping module is movably disposed on the mounting frame along the X-axis direction. Each clamping module includes a distance adjustment drive assembly and at least one first clamping assembly. Each first clamping assembly is used to clamp a U-tube. The distance adjustment drive assembly is used to drive the clamping module to move along the X-axis direction to adjust the distance between adjacent clamping modules.

[0007] In one embodiment, the first clamping assembly includes a clamping drive and two first jaws, each jaw having a clamping portion. The clamping drive is used to drive the two first jaws to rotate around the Z-axis, so that the clamping portion can rotate and switch between a clearance position and a working position. When the clamping portion is in the clearance position, it can be inserted into the gap of the U-tube along the Z-axis. When the clamping portion is in the working position, it can overlap with the two tube portions of the U-tube to lift the U-tube. The X-axis, Y-axis, and Z-axis intersect each other.

[0008] In one embodiment, the tube clamping device further includes a first lifting drive member, which is used to drive the tube clamping mechanism to reciprocate along the Z-axis direction.

[0009] In one embodiment, at least two sets of the inserting device are provided, and the at least two sets of inserting devices are spaced apart along the X-axis. At least one set of inserting devices is used to insert horizontally arranged U-tubes along the Y-axis into the flat tube holes of the fins, and at least one set of inserting devices is used to insert inclined U-tubes along the Y-axis into the inclined tube holes of the fins. The X-axis intersects the Y-axis.

[0010] In one embodiment, the inserting device includes an inserting module having a pusher and a pusher station. The pusher station is used to receive multiple U-tubes from a tube clamping device. The pusher is used to move along the Y-axis direction to insert the multiple U-tubes at the pusher station into the perforations of the fins at the inserting station along the Y-axis direction.

[0011] In one embodiment, the inserting module includes a second positioning component disposed at the pushing station. The second positioning component includes an upper mold and a lower mold disposed along the Z-axis. The lower mold has a plurality of first positioning parts facing the upper mold. Each first positioning part is used to place a U-tube. The upper mold has a plurality of second positioning parts, which are one-to-one opposite to the plurality of first positioning parts. The upper mold and / or the lower mold are used to close the mold along the Z-axis direction to align the plurality of second positioning parts with the plurality of first positioning parts one-to-one to position the U-tube. The X-axis, the Y-axis, and the Z-axis intersect each other.

[0012] In one embodiment, a plurality of second positioning components are provided, and the plurality of second positioning components are arranged at intervals along the Y-axis direction. Each second positioning component includes an upper mold and a lower mold arranged along the Z-axis.

[0013] In one embodiment, the first positioning part includes a first positioning groove and a second positioning groove. The bottom of the first positioning groove has a first groove bottom wall for placing a first tube portion of the U-tube, and the bottom of the second positioning groove has a second groove bottom wall for placing a second tube portion of the U-tube. The first and second bottom walls of the tank are horizontally spaced apart along the X-axis; or, the first and second bottom walls of the tank are staggered vertically along the X-axis.

[0014] In one embodiment, the first groove bottom wall and the second groove bottom wall are staggered vertically along the X-axis, with the first groove bottom wall located obliquely above the second groove bottom wall. The second positioning groove also includes a first groove side wall, which is located on the side of the second positioning groove away from the first positioning groove. The first groove side wall is connected to the second groove bottom wall. The first positioning groove is used to place the first tube portion of the U-tube, and the first groove side wall is used to allow the second tube portion of the U-tube to slide toward the second groove bottom wall.

[0015] In one embodiment, the lower mold further has a plurality of third positioning portions facing the upper mold, the third positioning portions and the first positioning portions being alternately distributed along the X-axis direction, and each of the third positioning portions being symmetrically distributed with any adjacent first positioning portion.

[0016] In one embodiment, the third positioning part includes a third positioning groove and a fourth positioning groove. The third positioning groove is symmetrically arranged with the first positioning groove of the adjacent first positioning part, and the fourth positioning groove is symmetrically arranged with the second positioning groove of the adjacent first positioning part.

[0017] In one embodiment, the loading station, the inserting station, and the unloading station are arranged sequentially along the X-axis. The feeding device includes multiple feeding modules, and the loading station, inserting station, and unloading station are respectively provided with the feeding modules. Each feeding module includes a first track component, a push plate, and a push plate drive component. The first track component is located on one side of the worktable along the Y-axis and extends along the X-axis. The push plate drive component is used to drive the push plate to reciprocate along the first track component to push the fins to move along the worktable. The X-axis intersects the Y-axis.

[0018] In one embodiment, the first positioning component includes a base, a positioning plate, and a positioning drive. The base is disposed on the worktable, and the positioning plate is movably connected to the base along the Y-axis. The positioning plate and the first reference member are disposed opposite each other along the Y-axis. The positioning drive is used to drive the positioning plate to reciprocate along the Y-axis to push the fin to be positioned with the first reference member.

[0019] In one embodiment, the workbench further includes a buffer station located between the unloading station and the threading station; The fin threading production line also includes a fin limiting device, which is located at the threading station. The fin limiting device is used to position the fin located at the threading station and to transfer the threaded fin to the buffer station.

[0020] In one embodiment, the fin limiting device includes a second driving component and a second clamping component. The second clamping component has two second jaws arranged opposite each other along the X-axis direction. The two second jaws are used to move closer or further apart relative to each other along the X-axis direction to clamp or release the fins along the X-axis direction. The second driving component is driven to connect to the second clamping component. The second driving component is used to drive the second clamping component to reciprocate along the X-axis direction to transfer the fins after tube insertion from the inserting station to the buffer station. The X-axis intersects the Y-axis.

[0021] In one embodiment, the fin limiting device further includes a side-pushing assembly, which is disposed on the side of the second clamping assembly near the buffer station. The side-pushing assembly includes a side-pushing drive and a side-pushing member. The side-pushing drive is used to drive the side-pushing member to move along the X-axis direction to push the fin from the buffer station to the unloading station.

[0022] In one embodiment, the fin threading production line further includes a loading and unloading coordination device, which is located near the loading station and / or the unloading station. The loading and unloading coordination device includes a stacking assembly and a drive module. The stacking assembly has multiple unloading stations spaced apart along the Z-axis. The drive module is used to drive the multiple unloading stations to move along the Z-axis. The X-axis, Y-axis, and Z-axis intersect each other.

[0023] In one embodiment, the material stacking assembly has two sets of conveyor groups spaced apart along the X-axis. Each set of conveyor groups includes two drive chains spaced apart along the Y-axis. Each drive chain includes two sprockets spaced apart along the Z-axis and a chain sleeved and mounted on the two sprockets. The outer periphery of the chain has multiple spaced material clamping slots. The multiple material clamping slots on opposite sides of the two sets of conveyor groups cooperate to form multiple material discharging stations. The drive module is used to drive the two conveyor groups to rotate in opposite directions, so as to drive the multiple material discharging stations to move up and down along the Z-axis.

[0024] In one embodiment, the stacking assembly is provided in multiple sets, and the drive module is provided in multiple sets. The multiple drive modules are connected to the multiple sets of stacking assemblies in a one-to-one drive connection. Each drive module includes a stacking drive component, a drive shaft, and multiple angle actuators. The stacking drive component is driven to the drive shaft. The two ends of the drive shaft are respectively driven to the two conveying groups corresponding to the stacking assembly through the angle actuators, so as to drive the two conveying groups corresponding to the stacking assembly to rotate in opposite directions. Alternatively, the stacking assembly may be provided in multiple groups, and the drive module drives and connects multiple groups of the stacking assembly. The drive module includes a stacking drive component, a transmission shaft, and multiple angle actuators. The stacking drive component drives and connects to the transmission shaft. The two conveying groups of each stacking assembly are connected to the transmission shaft through the angle actuators, so that the stacking drive component drives the two conveying groups of the multiple stacking assemblies to rotate in opposite directions.

[0025] In one embodiment, the loading and unloading coordination device further includes a positioning module, which includes a second positioning drive and a second reference member. The second positioning drive and the second reference member are respectively disposed on both sides of the stacking assembly along the Y-axis direction. The second positioning drive is used to drive the fin to move along the Y-axis direction toward the second reference member, so as to position the fin between the second positioning drive and the second reference member.

[0026] The technical solution of this invention involves setting up a fin threading production line including a workbench, a feeding device, a fin positioning device, a tube clamping device, and a threading device. The workbench has a loading station, a threading station, and a unloading station. The feeding device is used to transfer the fins between the loading station, the threading station, and the unloading station. The fin positioning device includes a first reference member and a first positioning component arranged opposite each other along the Y-axis. The first positioning component is used to move along the Y-axis to position the fins on the first reference member. When the threading device inserts the U-tube into the fin's perforation along the Y-axis, fins with different expansion dimensions can be threaded at predetermined positions. At the same time, the tube clamping device can adjust the spacing between adjacent U-tubes according to the fin perforation position, achieving compatibility with the perforation layout requirements of fins of different specifications. This satisfies the threading requirements of fins of different specifications, enabling the fin threading production line to adapt to the threading operation of fins of different specifications and sizes, and meet the threading requirements of fins of different specifications. Attached Figure Description

[0027] 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 only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of a structure of an embodiment of the fin threading production line provided by the present invention; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 for Figure 2A schematic diagram of the structure of one embodiment of the first positioning component; Figure 4 for Figure 1 A schematic diagram of an embodiment of the feeding device; Figure 5 for Figure 1 A schematic diagram of an embodiment of the clamping tube device; Figure 6 for Figure 5 A schematic diagram of the arrangement of the clamping modules in the tube clamping mechanism; Figure 7 for Figure 6 A schematic diagram of the structure of an embodiment of the clamping module; Figure 8 for Figure 7 A schematic diagram of the structure of one embodiment of the first clamping component; Figure 9 for Figure 8 A schematic diagram of the structure of one embodiment of the first gripper; Figure 10 for Figure 1 A schematic diagram of an embodiment of the middle fin limiting device; Figure 11 for Figure 1 A schematic diagram of another embodiment of the feeding device; Figure 12 for Figure 1 A schematic diagram of the structure of an embodiment of the interlocking module; Figure 13 for Figure 12 A schematic diagram of the structure of one embodiment of the second positioning component; Figure 14 for Figure 13 A schematic diagram of the second positioning component from another angle; Figure 15 for Figure 14 A magnified view of a section at point B in the middle; Figure 16 This is a schematic diagram of an embodiment of the loading and unloading coordination device provided by the present invention; Figure 17 for Figure 16 Schematic diagram of the internal structure of the loading and unloading coordination device; Figure 18 for Figure 17 A magnified view of a section at point C; Figure 19 for Figure 16 A schematic diagram of another embodiment of the drive module.

[0029] Explanation of icon numbers: 100. Fin threading production line; 10. Workbench; 101. Loading station; 102. Threading station; 103. Unloading station; 104. Buffer station; 20. Feeding device; 21. First track component; 22. Push plate; 23. Push plate drive component; 30. Fin positioning device; 31. First reference component; 32. First positioning assembly; 321. Base; 322. First positioning plate; 323. Positioning drive component; 324. Connecting rod; 40. Insertion device; 41. Insertion module; 411. Pushing component; 412. Pushing station; 413. Second positioning assembly; 4131. Upper die; 4131a. Second positioning part; 41311. Fifth positioning groove; 41312. Sixth positioning groove; 41313. Positioning rib; 41314. Extension arm; 4132. Lower die; 4132a. First positioning part; 41321. First positioning groove; 41321a. First groove bottom wall; 41321b, first guide wall; 41322, second positioning groove; 41322a, second groove bottom wall; 41322b, first groove side wall; 41322c, second guide wall; 4132b, third positioning part; 41323, third positioning groove; 41324, fourth positioning groove; 4133, upper positioning component; 414, push drive component; 421, guide module; 422, guide module drive component; 50. Pipe clamping device; 51. First frame; 52. Pipe clamping mechanism; 52a. First mounting frame; 52b. Clamping module; 521. Adjustable distance drive assembly; 522. First clamping assembly; 5221. Clamping drive component; 5222. First gripper; 52221. Clamping part; 52222. Eccentric part; 52223. Gripper body; 5223. Lateral push rod; 5224. Gripper frame; 5225. Push rod frame; 5226. Connecting block; 53. Moving drive assembly; 54. First lifting drive component; 60. Fin limiting device; 61. Second drive assembly; 611. First sub-drive component; 612. Second sub-drive component; 62. Second clamping assembly; 621. Second gripper; 622. Second clamping drive component; 623. Gripper crossbeam; 63. Side push assembly; 631. Side push drive component; 632. Side push component; 64. Second frame; 65. Third mounting bracket; 70. Loading and unloading coordination device; 71. Stacking assembly; 71a. Conveying group; 711. Drive chain; 7111. Sprocket; 7112. Chain; 7113. Material clamping groove; 712. Linkage rod; 72. Drive module; 721. Stacking drive component; 722. Drive shaft; 723. Angle drive; 73. Positioning module; 731. Second positioning drive component; 732. Second reference component; 733. Second positioning plate; 80. Lifting device; 200, fins; 300, U-tube.

[0030] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0031] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0032] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0033] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0034] In the automatic punching and expansion inserting process for air conditioner heat exchangers, the produced products have various hole layouts, corresponding to multiple pre-punched and angled tube hole layouts. This results in a complex and variable layout of the flat tube hole positions. General automatic inserting equipment lacks flexible production capabilities and cannot accommodate such complex insert hole position requirements, requiring dedicated machines for specific applications. When the hole positions, widths, and expansion heights of new products change significantly, traditional automatic inserting equipment needs to be upgraded, resulting in substantial one-time production equipment costs.

[0035] This invention proposes a fin threading production line.

[0036] Please see Figures 1 to 19In one embodiment of the present invention, the fin threading production line includes a workbench 10, a feeding device 20, and a fin positioning device 30; the workbench 10 has a loading station 101, a threading station 102, and a unloading station 103; the feeding device 20 is disposed on the workbench 10 and is used to transfer the fins 200 between the loading station 101, the threading station 102, and the unloading station 103; the fin positioning device 30 is disposed on the workbench 10, and the fin positioning device 30 includes a first reference member 31 and a first positioning component 32 arranged opposite to each other along the Y-axis direction, the first positioning component 31... 2 is used to move along the Y-axis to position the fin 200 on the first reference member 31; the tube clamping device 50 is provided on one side of the workbench 10, the tube clamping device 50 is used to clamp multiple U tubes 300 and transfer them, and to adjust the spacing between adjacent U tubes 300 according to the perforation position of the fin 200; the inserting device 40 is provided on one side of the workbench 10 and is arranged opposite to the inserting station 102 along the Y-axis, the inserting device 40 is used to receive the U tubes 300 transferred by the tube clamping device 50, and insert the U tubes 300 along the Y-axis into the perforation of the fin 200.

[0037] The fin threading production line 100 of the present invention can be used for the automatic threading operation of fins 200 in air conditioning heat exchangers. The fins 200 can be stacks of multiple sub-fins arranged along their thickness direction. The U-tube 300 can be a U-shaped heat exchange tube of the heat exchanger, having a first tube section and a second tube section extending along its length direction, and a connecting portion connecting the first tube section and the second tube section. The fins 200 can have multiple different perforation positions along the tube expansion height direction, including pre-threading positions, oblique perforation positions, and horizontal perforation positions. The pre-piercing position may include a pre-drilled hole extending along the expansion direction of the fin 200. By pre-inserting a fixing rod through the pre-drilled hole, multiple sub-fins 200 are pre-connected to form a fin stack. The oblique piercing hole position may include two oblique piercing holes extending along the expansion direction of the fin 200. The line connecting the positions of the two oblique piercing holes is inclined relative to the thickness of the fin 200. They are used to insert the first tube section and the second tube section of the U-tube 300, so that the inserted U-tube 300 is inclined relative to the thickness of the fin 200. The horizontal piercing hole position may include two horizontal piercing holes extending along the expansion direction of the fin 200. The line connecting the positions of the two horizontal piercing holes is parallel or perpendicular to the thickness of the fin 200, so that the inserted U-tube 300 is parallel or perpendicular to the thickness of the fin 200.

[0038] The workbench 10 has a loading station 101 for loading pre-inserted fins 200, an insertion station for inserting fins 200 after loading, and an unloading station 103 for unloading fins 200 after insertion. The feeding device 20 transfers the fins 200 between the loading station 101, the insertion station 102, and the unloading station 103. The expansion direction of the fins 200 placed on the workbench 10 can be the Y-axis direction. It is understandable that due to different fin sizes, the expansion height of the fins 200 may vary. When fins 200 with different expansion heights are inserted into the tube, the U-tube 300 may not be accurately positioned within the fin after insertion, resulting in substandard fins 200 in subsequent processing. To address this, the present invention provides a fin positioning device 30, which includes a first reference member 31 and a first positioning component 32. The distance between the first reference member 31 and the first positioning component 32 along the Y-axis is adjustable, and the first reference member 31 and the first positioning component 32 are respectively used to abut and position the fin 200 against its side. When the fin 200 is located at the threading station 102, the distance between the fin 200 and the threading device 40 in the Y-axis direction is controllable, ensuring that the distance between the end of the fin 200 used for threading the U-tube 300 and the initial position of the threading device 40 when it enters the U-tube 300 remains constant. This allows fins 200 with different expansion dimensions to be accurately positioned with the threading device 40 at the threading station 102, thereby accommodating the threading operation of fins 200 with different expansion dimensions.

[0039] The fin positioning device 30 can be set at the fin threading station 102. The first reference member 31 can be set on one side of the fin threading station 102 along the Y-axis, near the initial position of the fin threading device 40 when it enters the U-tube 300, and can be fixed relative to the worktable 10. The first positioning component 32 can be set on the other side of the fin threading station 102 along the Y-axis and can move relative to the worktable 10. The first positioning component 32 can push the fin 200 to move towards the first reference member 31 along the Y-axis, so that the raised side of the fin 200 abuts against the first reference member 31, and the other end of the first positioning component 32 abuts against the other raised side of the fin 200. This allows fins 200 with different raised heights to use the first reference member 31 as a reference, keeping the distance between the end of the fin 200 used for U-tube 300 insertion and the initial position of the fin threading device 40 when it enters the U-tube 300 constant, thus enabling the threading operation of fins 200 with different raised heights. Alternatively, the fin positioning device 30 can be arranged along the entire extension direction of the loading station 101, the fin threading station 102, and the unloading station 103. For example, the loading station 101, the fin threading station 102, and the unloading station 103 can be arranged sequentially along the X-axis. Multiple fin positioning devices 30 are arranged sequentially along the X-axis on the worktable 10, and multiple first reference elements 31 and multiple first positioning components 32 of the multiple fin positioning devices 30 are arranged opposite each other on both sides of the worktable 10 along the Y-axis. In this way, the first reference element 31 is always used as the positioning reference throughout the entire process from loading to unloading of the fin 200, ensuring that the operation of the fin 200 at all parts of the worktable 10 uses the same reference as the positioning reference, thereby adapting to the fin threading production operation of fins 200 with different heights.

[0040] The threading device 40 may include a threading module 41, which may be disposed on one side of the threading station 102 along the Y-axis. The threading module 41 may have a pushing station 412 and a pushing member 411 disposed on the side of the pushing station 412 away from the threading station 102. After the clamping device 50 clamps the multiple U-tubes 300 and places them on the pushing station 412, the pushing member 411 moves along the Y-axis toward the multiple U-tubes 300, pushing the multiple U-tubes 300 along the Y-axis toward the fins 200 located at the threading station 102, and threading the U-tubes 300 through the openings at the opening positions of the fins 200 to perform the threading operation of the fins 200.

[0041] The tube clamping device 50 can supply material to the fin threading device 40. The tube clamping device 50 can have multiple clamping modules 52b, each of which can clamp at least one U-tube 300, allowing the tube clamping device 50 to clamp multiple U-tubes 300 simultaneously, thereby supplying multiple U-tubes 300 to the fin threading device 40 at one time. For example, the tube clamping device 50 can supply the fin threading device 40 with a set of U-tubes 300 for threading the upper perforation positions of the fins 200 at one time, or supply the fin threading device 40 with a set of U-tubes 300 for threading the lower perforation positions of the fins 200 at one time. In addition, the tube clamping device 50 can not only supply material to the fin threading device 40, but also has an adjustable spacing between adjacent clamping modules 52b. This allows the spacing between adjacent clamping modules 52b to be adjusted according to the spacing between adjacent perforation positions on the fin 200. After multiple clamping modules 52b clamp multiple U-tubes 300, the spacing between the U-tubes 300 meets the spacing requirements of the perforation positions of the fin 200, thus adapting to the tube threading requirements of the fin 200 at different perforation positions.

[0042] The technical solution of the present invention includes a fin threading production line 100 comprising a workbench 10, a feeding device 20, a fin positioning device 30, a tube clamping device 50, and a fin threading device 40. The workbench 10 has a loading station 101, a fin threading station 102, and a unloading station 103. The feeding device 20 is used to transfer the fins 200 between the loading station 101, the fin threading station 102, and the unloading station 103. The fin positioning device 30 includes a first reference member 31 and a first positioning component 32 arranged opposite each other along the Y-axis. The first positioning component 32 is used to position the fins 200 along the Y-axis. The movement positions the fin 200 on the first reference member 31. When the fin threading device 40 inserts the U-tube 300 into the through hole of the fin 200 along the Y-axis, fins 200 with different expansion sizes can be threaded at predetermined positions. At the same time, the clamping device 50 can adjust the spacing between adjacent U-tubes 300 according to the fin through hole position to meet the hole layout requirements of fins of different specifications, thereby meeting the threading requirements of fins of different specifications. This allows the fin threading production line 100 to adapt to the threading operation of fins 200 of different specifications and sizes, and meet the threading requirements of fins 200 of different specifications.

[0043] The structure of the clamping device will be further described below, such as... Figure 1 , Figure 5 As shown, in one embodiment, the tube clamping device 50 includes a first frame 51, a tube clamping mechanism 52, and a moving drive assembly 53. The tube clamping mechanism 52 is movably disposed on the first frame 51 along the X-axis and is drivenly connected to the moving drive assembly 53. The tube clamping mechanism 52 is used to clamp multiple U-tubes 300. The moving drive assembly 53 is used to drive the tube clamping mechanism 52 to move along the X-axis to transfer the clamped multiple U-tubes 300 to the inserting device 40. The X-axis intersects the Y-axis.

[0044] The first frame 51 may have a slide rail for sliding the tube clamping mechanism 52. The slide rail may extend along the X-axis. The moving drive assembly 53 may include a motor, a gear and a rack. The rack extends along the X-axis and is disposed on the slide rail. The motor and the gear may be disposed on the tube clamping mechanism 52. The motor drives the gear to rotate through the meshing of the gear and the rack, thereby driving the gear to move relative to the rack and causing the tube clamping mechanism 52 to reciprocate along the X-axis.

[0045] Understandably, the fin threading production line 100 may also include a feeding station, which can be used to feed the U-tube 300. The feeding station is set within the travel range of the clamping mechanism 52 along the X-axis. When the clamping mechanism 52 moves between the feeding station and the threading device 40 along the X-axis, the U-tube 300 can be transferred from the feeding station to the threading device 40, thereby realizing the feeding of the U-tube 300.

[0046] The structure of the pipe clamping mechanism 52 is described below. The pipe clamping mechanism 52 includes a first mounting frame 52a and a plurality of clamping modules 52b. Each clamping module 52b is movably disposed on the first mounting frame 52a along the X-axis direction. Each clamping module 52b includes a distance adjustment drive assembly 521 and at least one first clamping assembly 522. Each first clamping assembly 522 is used to clamp the U-tube 300. The distance adjustment drive assembly 521 is used to drive the clamping module 52b to move along the X-axis direction to adjust the distance between adjacent clamping modules 52b.

[0047] Each first clamping component 522 can clamp a corresponding U-tube 300. The adjustable distance drive component 521 includes a motor and gears. A rack extending along the X-axis can be provided on the first mounting frame 52a. The clamping module 52b is slidably disposed on the first mounting frame 52a along the X-axis, and the gear of the adjustable distance drive component 521 can mesh with the rack on the first mounting frame 52a, so that the clamping module 52b can be driven by the motor to rotate the gear, thereby driving the clamping module 52b to move along the X-axis on the first mounting frame 52a. Since each clamping module 52b has an independent adjustable distance drive component 521, each clamping module 52b can move independently along the X-axis.

[0048] Understandably, the tube clamping mechanism 52 can clamp multiple U-tubes 300 simultaneously through multiple clamping modules 52b, and move them to the inserting device 40 along the X-axis in conjunction with the moving drive component 53. This avoids the inefficiency of feeding each U-tube 300 one by one, significantly improves the feeding efficiency of the U-tubes 300, and adapts to the continuous operation requirements of the production line.

[0049] It is understandable that when the pitch adjustment drive assembly 521 can drive the corresponding clamping module 52b to move along the X-axis direction and adjust the spacing between adjacent clamping modules 52b, since the clamping module 52b includes at least one first clamping component 522, and each first clamping component 522 can be used to clamp one U-tube 300, after the tube clamping mechanism 52 clamps multiple U-tubes 300, at least some of the U-tubes 300 can be adjusted. Thus, the spacing between adjacent U-tubes 300 can be adjusted according to the spacing of the tube insertion position on the fin 200, so that the fin insertion production line 100 can adapt to the tube insertion requirements of fins 200 at different tube insertion positions, accurately match the arrangement spacing of U-tubes 300, and ensure that U-tubes 300 can be accurately inserted into the corresponding perforation of fins 200, avoiding tube insertion misalignment or fin damage caused by mismatched spacing.

[0050] It is understandable that the spacing of the perforation positions differs among fins 200 of different specifications (such as fins 200 of different sizes and perforation layouts). By independently adjusting the spacing between adjacent U-tubes 300, the tube clamping mechanism 52 can adapt to the tube insertion requirements of various fins 200 without changing the overall structure, reducing equipment adjustment time and costs caused by specification switching, improving the adaptability of the fin insertion production line 100 to multi-variety, small-batch orders, supporting the automation and flexible operation of the fin insertion production line 100, and further meeting the flexible operation requirements of the fin insertion production line 100.

[0051] The structure of the first clamping assembly 522 is described below, such as... Figure 8 , Figure 9 As shown, in one embodiment, the first clamping assembly 522 includes a clamping drive 5221 and two first jaws 5222. The first jaws 5222 have clamping portions 52221. The clamping drive 5221 is used to drive the two first jaws 5222 to rotate around the Z-axis, so that the clamping portions 52221 can rotate and switch between a clearance position and a working position. When the clamping portions 52221 are in the clearance position, they can be inserted into the gap of the U-tube 300 along the Z-axis. When the clamping portions 52221 are in the working position, they can overlap with the two tube portions of the U-tube 300 to lift the U-tube 300. The X-axis, Y-axis, and Z-axis intersect each other.

[0052] The first clamping assembly 522 may further include a gripper frame 5224, on which two first grippers 5222 are rotatably mounted. Each first gripper 5222 may include an eccentric portion 52222, a gripper body 52223, and a clamping portion 52221 connected sequentially along the Z-axis. The two first grippers 5222 may be spaced apart along the Y-axis. The clamping drive unit 5221 may include a cylinder and a transverse push rod 5223. The transverse push rod 5223 is disposed between the two first grippers 5222 and extends along the Y-axis. The gripper frame 5224 is provided with a push rod frame 5225 for the transverse push rod 5223 to slide back and forth along the Y-axis. One end of the transverse push rod 5223 is connected to the eccentric portion 52222 of one of the first grippers 5222 via a connecting block 5226, and the other end of the transverse push rod 5223 is connected to the eccentric portion 52222 of the other first gripper 5222 via the connecting block 5226. The cylinder drives the transverse push rod 5223. The cylinder drives the transverse push rod 5223 to reciprocate along the Y-axis, so that the transverse push rod 5223 drives the eccentric part 52222 of each first gripper 5222 to swing eccentrically relative to the first gripper 5222 through the connecting block 5226, thereby driving the first gripper 5222 to rotate around the Z-axis, so that the gripping part 52221 of the first gripper 5222 can rotate and switch between the avoidance position and the working position.

[0053] The clamping portion 52221 of the first gripper 5222 may include two opposing protrusions. When the clamping portion 52221 is in the clearance position, the two protrusions extend along the Y-axis and can pass through the gap between the first and second tube sections of the U-tube 300. When the clamping portion 52221 is in the working position, the two protrusions can extend along the X-axis. When the clamping portion 52221 moves along the axis from the clearance position to pass through the gap of the U-tube 300 and rotates to the working position, the two protrusions of the clamping portion 52221 extend along the X-axis, and the first and second tube sections of the U-tube 300 can respectively overlap the two protrusions of the clamping portion 52221. When the U-tube 300 overlaps the clamping portions 52221 of the two first grippers 5222, and the two overlapping parts are at the trisection points of the U-tube 300, the U-tube 300 can be lifted, thereby achieving the clamping of the U-tube 300.

[0054] The connecting block 5226 may have a strip groove. The eccentric part 52222 of the first gripper 5222 can be slidably installed in the strip groove. As the connecting block 5226 moves back and forth along the Y-axis with the transverse push rod 5223, the eccentric part 52222 of the first gripper 5222 slides back and forth in the strip groove, thereby causing the eccentric part 52222 to rotate axially relative to the first gripper 5222, thereby causing the first gripper 5222 to rotate around the Z-axis, so that the clamping part 52221 of the first gripper 5222 can switch back and forth between the avoidance position and the working position.

[0055] Understandably, when the clamping part 52221 is in the avoidance position, the two protrusions extending along the Y-axis of the clamping part 52221 can be inserted along the Z-axis into the gap between the first and second sections of the U-tube 300, avoiding interference with the U-tube 300 and ensuring that the grippers can smoothly enter the gripping position. After rotating to the working position, the two protrusions of the clamping part 52221 extend along the X-axis and overlap with the two sections of the U-tube 300, achieving two-point support. Combined with the four-point coordinated lifting of the two first grippers 5222, the U-tube 300 can be stably lifted at two trisection points, preventing the U-tube 300 from shaking or falling during the transfer process, and ensuring the stability and accuracy of the gripping. Furthermore, by lifting rather than clamping the U-tube 300, excessive pressure is avoided on the surface or bent parts of the U-tube 300, preventing deformation or damage. The size of the protrusion of the clamping part 52221 matches the gap of the U-tube 300. During rotation switching, clamping is achieved only by position change, without the need for complex size adjustments, thus meeting the batch clamping requirements of U-tubes 300 of the same specification. Combined with the independent spacing adjustment function of the clamping module 52b, the stable clamping capability of the first clamping component 522 ensures that the U-tube 300 maintains a stable posture during the adjustment of the spacing between adjacent U-tubes 300, avoiding displacement of the U-tube 300 due to spacing changes, and further ensuring the accurate docking of the subsequent threading device 40 with the U-tube 300.

[0056] The clamping device 50 will be further described below, such as... Figure 5 As shown, in one embodiment, the tube clamping device 50 further includes a first lifting drive member 54, which is used to drive the tube clamping mechanism 52 to reciprocate along the Z-axis direction.

[0057] The tube clamping device 50 may further include a second mounting frame. The tube clamping mechanism 52 includes multiple clamping modules 52b and a first mounting frame 52a. The multiple clamping modules 52b are slidably mounted on the second mounting frame along the Z-axis via the first mounting frame 52a. The second mounting frame is slidably mounted on the first frame 51 along the X-axis, allowing the tube clamping mechanism 52 to slide along the X-axis onto the first frame 51 with the second mounting frame. A movement drive assembly 53 may be disposed on the second mounting frame. The movement drive assembly 53 drives the second mounting frame to reciprocate along the X-axis on the first frame 51, causing the multiple clamping modules 52b to move between the feeding station and the inserting device 40. A first lifting drive component 54 may be disposed on the second mounting frame and drive the first mounting frame 52a. The first lifting drive component 54 drives the first mounting frame 52a to reciprocate along the Z-axis, thereby driving the gripper mechanism to reciprocate along the Z-axis.

[0058] Understandably, since the tube clamping mechanism 52 includes multiple clamping modules 52b, when clamping the U-tube 300, the clamping part 52221 of the clamping module 52b needs to move along the Z-axis. The first lifting drive 54 enables multiple clamping modules 52b to reciprocate simultaneously along the Z-axis, thus facilitating the tube clamping mechanism 52 to clamp multiple U-tubes 300 at once. The first lifting drive 54 drives the first mounting bracket 52a to rise and fall as a whole, ensuring that all clamping modules 52b move synchronously in the Z-axis direction. This allows multiple clamping modules 52b to complete the clamping or releasing action of the U-tube 300 at the same height, avoiding tilting or falling of the U-tube 300 due to height deviation of a single module, and ensuring stability during the batch transfer of multiple U-tubes 300.

[0059] In addition, the first lifting drive 54 drives multiple clamping modules 52b of the tube clamping mechanism 52 to reciprocate along the Z-axis. The height of the clamping modules 52b can be adjusted according to different scenario requirements, such as the stacking height of the U-tubes 300 at the feeding station and the height of the pushing station 412 of the inserting device 40. For example, at the feeding station, the modules can descend to the clamping height of the U-tubes 300, rise to the transfer height after clamping, and descend again to the placement height of the U-tubes 300 when they reach the inserting device 40. This ensures smooth handover of the U-tubes 300 between different stations and avoids interference with other components.

[0060] Furthermore, through the combined motion of Z-axis lifting and X-axis movement, the tube clamping mechanism 52 can flexibly adjust its position in three-dimensional space to adapt to the compact layout of the workbench 10. For example, when transferring the U-tube 300, it can avoid structural interference from the workbench 10 or other devices by lifting, thereby expanding the working range of the tube clamping device 50 and improving the overall space utilization of the production line.

[0061] This invention proposes a fin threading device for a fin threading production line, wherein the fin threading production line has a workbench for threading fins through tubes.

[0062] Please see Figures 12 to 15 In one embodiment of the present invention, the inserting device is used to be set on one side of the workbench. The inserting device includes at least two sets of inserting devices 40. The at least two sets of inserting devices 40 are spaced apart along the X-axis direction. At least one set of inserting devices 40 is used to insert horizontally arranged U-tubes 300 along the Y-axis direction into the flat tube holes of the fins 200. At least one set of inserting devices 40 is used to insert inclinedly arranged U-tubes 300 along the Y-axis direction into the inclined tube holes of the fins 200. The X-axis direction and the Y-axis direction are intersected.

[0063] The fin threading equipment of the present invention can be used in a fin threading production line to realize the automatic threading operation of air conditioning heat exchanger fins 200. The fin 200 can be a stack of fins formed by stacking multiple sub-fins along the thickness direction. The U-tube 300 can be a U-shaped heat exchange tube of the heat exchanger, having a first tube section and a second tube section extending along its length direction, and a connecting portion connecting the first tube section and the second tube section. The fin 200 can have multiple different perforation positions opened along the tube expansion height direction, including pre-piercing positions, oblique perforation positions, and horizontal perforation positions. The pre-piercing positions may include pre-drilled holes extending along the expansion direction of the fin 200. Multiple sub-fins 200 are pre-connected to form a fin stack by inserting fixing rods into these pre-drilled holes. The oblique piercing positions may include two oblique piercing holes extending along the expansion direction of the fin 200, with the line connecting the holes inclined relative to the thickness of the fin 200. These holes are used to insert the first and second sections of the U-tube 300, respectively, so that the inserted U-tube 300 is inclined relative to the thickness of the fin 200. The horizontal piercing positions may include two horizontal piercing holes extending along the expansion direction of the fin 200, with the line connecting the holes parallel or perpendicular to the thickness of the fin 200, so that the inserted U-tube 300 is parallel or perpendicular to the thickness of the fin 200. The fins can move along the X-axis on the worktable to facilitate reciprocating movement between multiple fin-piercing devices 40.

[0064] The fin threading production line may include a tube clamping device 50, which can supply material to the fin threading device 40. The tube clamping device 50 may have multiple clamping modules 52b, each of which can be used to clamp at least one U-tube 300, so that the tube clamping device 50 can clamp multiple U-tubes 300 at the same time, thereby enabling it to supply multiple U-tubes 300 to the fin threading device 40 at one time.

[0065] Understandably, since the fin 200 has oblique and horizontal perforation positions, the oblique perforation position is used to insert inclined U-tubes 300, and the horizontal perforation position is used to insert horizontally or vertically placed U-tubes 300. When the tube clamping mechanism 52 clamps the U-tubes 300, to ensure stable clamping, all U-tubes 300 are usually placed horizontally. Before subsequent insertion, the horizontally placed U-tubes 300 need to be swung to a certain angle relative to one tube to adapt to the oblique perforation position of the fin 200. To avoid interference with nearby horizontally placed U-tubes 300 when the U-tubes 300 are swung to an incline, causing the U-tubes 300 to fail to align with the perforation positions on the fin 200, this process is necessary. Here, the fin threading device 40 is configured as at least two sets. One set is used to insert the horizontally arranged U-tubes 300 along the Y-axis into the flat perforation position of the fin 200, and the other set is used to insert the inclined U-tubes 300 into the inclined perforation position of the fin 200. This avoids mechanical interference between the inclined and horizontally arranged U-tubes 300 when they are inserted into the fin 200, preventing the U-tubes 300 from shifting or failing to align with the perforation. By setting at least two sets of independent fin threading devices 40 at intervals along the X-axis, the fin threading operations of the horizontal and inclined U-tubes 300 can be spatially separated, fundamentally avoiding interference problems and ensuring that the U-tubes 300 are precisely aligned with the corresponding perforations.

[0066] Understandably, the hole angles and spacing on the fins 200 differ between flat tube perforations and inclined tube perforations. The two sets of perforation devices 40 can be structurally optimized for the arrangement characteristics of horizontal / inclined U-tubes 300, respectively, without the need for frequent adjustments to the parameters of individual devices to adapt to different perforation types, thus improving the adaptability to diverse fin structures 200.

[0067] like Figure 1 , Figure 12 As shown, in one embodiment, the inserting device 40 is provided in at least two sets, and the at least two sets of inserting devices 40 are spaced apart along the X-axis direction. At least one set of inserting devices 40 is used to insert the horizontally arranged U-tubes 300 along the Y-axis direction into the flat tube holes of the fins 200, and at least one set of inserting devices 40 is used to insert the inclinedly arranged U-tubes 300 along the Y-axis direction into the inclined tube holes of the fins 200.

[0068] Understandably, since the fin 200 has oblique and horizontal perforation positions, the oblique perforation position is used for inserting inclined U-tubes 300, and the horizontal perforation position is used for inserting horizontally or vertically placed U-tubes 300. When the tube clamping mechanism 52 clamps the U-tube 300 through the first clamping component 522, it uses the clamping part 52221 to support the U-tube 300. All U-tubes 300 are horizontally placed. Before subsequent insertion, the horizontally placed U-tubes 300 need to be swung to a certain angle with one tube as a reference to adapt to the oblique perforation position of the fin 200. To avoid interference with nearby horizontally placed U-tubes 300 when the U-tubes 300 are swung to an incline, causing the U-tubes 300 to be unable to fit with the fin, The perforation positions on fin 200 are aligned. Here, the fin threading device 40 is set to at least two sets. One set can be used to insert the horizontally arranged U-tubes 300 along the Y-axis into the flat perforation positions of the fin 200. The other set is used to insert the inclined U-tubes 300 into the inclined perforation positions of the fin 200. This avoids mechanical interference between the inclined and horizontally arranged U-tubes 300 when they are inserted into the fin 200, preventing the U-tubes 300 from shifting or failing to align with the perforations. By setting at least two sets of independent fin threading devices 40 at intervals along the X-axis, the fin threading operations of the horizontal and inclined U-tubes 300 can be spatially separated, fundamentally avoiding interference problems and ensuring that the U-tubes 300 are accurately aligned with the corresponding perforations.

[0069] Understandably, the hole angles and spacing on the fins 200 differ between flat tube perforations and inclined tube perforations. The two sets of perforation devices 40 can be structurally optimized for the arrangement characteristics of horizontal / inclined U-tubes 300, respectively, without the need for frequent adjustments to the parameters of individual devices to adapt to different perforation types, thus improving the adaptability to diverse fin structures 200.

[0070] In addition, at least two sets of threading devices 40 are arranged at intervals along the X-axis, or three sets of threading devices 40 can be arranged to correspond to the perforations in different areas on the fin 200, such as upper layer flat tube perforation, lower layer inclined tube perforation, and lower layer flat tube perforation. After the feeding device 20 moves the fin 200 to the threading station 102, at least two sets of devices can also work together to perform threading operations, reducing the waiting time for a single set of devices to process different perforations in turn, realizing the parallel insertion of multiple types of U tubes 300, and effectively improving the threading efficiency per unit time.

[0071] The structure of the implantation device 40 is described below, such as... Figure 12 , Figure 13As shown, in one embodiment, the inserting device 40 includes an inserting module 41, which is disposed on one side of the inserting station 102 along the Y-axis. The inserting module 41 has a pusher 411 and a push station 412. The push station 412 is used to receive multiple U-tubes from the tube clamping device 50. The pusher 411 is used to move along the Y-axis to insert the multiple U-tubes 300 into the perforations of the fin 200 along the Y-axis.

[0072] The threading module 41 may also include a push drive 414, which drives the pusher 411. The push drive 414 drives the pusher 411 to move closer to or away from the U-tube 300 placed on the push station 412 along the Y-axis. When the pusher 411 moves toward the U-tube 300, it can drive multiple U-tubes 300 to move along a preset path and pass through the perforation position of the fin 200 in the threading station 102, so that the U-tubes 300 can perform the threading operation on the fin 200.

[0073] In addition, the threading device 40 may also include a guide module 421, which is located on the other side of the threading station 102 along the Y-axis. The guide module 421 has multiple guide pins extending along the Y-axis, and the arrangement of the multiple guide pins corresponds to the arrangement of the perforations on the fin 200. The threading device 40 also includes a guide module drive 422, which drives the multiple guide pins to reciprocate along the Y-axis so that the multiple guide pins can be inserted into the perforations of the fin 200. One end of the guide pin facing the threading module 41 is used to engage with the U-tube 300 so that the U-tube 300 moves toward the perforation position of the fin 200 under the push of the pusher 411, so that the U-tube 300 is inserted into the perforation of the fin 200.

[0074] With this setup, multiple guide pins can be inserted into the perforations of the fin 200 on the other side along the Y-axis and positioned with the U-tube 300, thereby guiding the U-tube 300 to move into the perforations of the fin 200, enabling the U-tube 300 to achieve more precise fin insertion.

[0075] To ensure that the pusher 411 located at the push station 412 can move along a preset path toward the fin 200, and thus perform the fin insertion operation, such as... Figure 12 , Figure 13As shown, in one embodiment, the inserting module 41 includes a second positioning component 413 disposed at the pushing station 412. The second positioning component 413 includes an upper mold 4131 and a lower mold 4132 disposed along the Z-axis. The lower mold 4132 has a plurality of first positioning portions 4132a facing the upper mold 4131. Each first positioning portion 4132a is used to place the U-tube 300. The upper mold 4131 has a plurality of second positioning portions 4131a, which are one-to-one with the plurality of first positioning portions 4132a. The upper mold 4131 and / or the lower mold 4132 are used to close the mold along the Z-axis direction to align the plurality of second positioning portions 4131a with the plurality of first positioning portions 4132a one-to-one to position the U-tube 300. The X-axis, the Y-axis, and the Z-axis intersect each other.

[0076] The first positioning part 4132a located in the lower mold 4132 can be configured with two positioning grooves. One positioning groove is used to position the lower end of the first tube of the U-tube 300, and the other positioning groove is used to position the lower end of the second tube of the U-tube 300. The second positioning part 4131a located in the upper mold 4131 can also be configured with two positioning grooves. One positioning groove of the second positioning part 4131a is used to position the upper end of the first tube of the U-tube 300, and the other positioning groove of the second positioning part 4131a is used to position the upper end of the second tube of the U-tube 300. When the upper mold 4131 and the lower mold 4132 are closed, the two tubes of the U-tube 300 are effectively positioned by the docking of the first positioning part 4132a and the second positioning part 4131a. Thus, when the pusher 411 pushes the U-tube 300 through the fin in the Y-axis direction, it can move towards the fin 200 along a preset path.

[0077] Alternatively, the upper mold 4131 and lower mold 4132 can be configured to separate from each other along the Z-axis. When the U-tube 300 is inserted into the perforation of the fin 200, the upper mold 4131 and lower mold 4132 can separate from each other along the Z-axis. Then, the pusher 411 continues to push the U-tube 300 into the perforation of the fin 200, thereby avoiding interference between the connecting part of the U-tube 300 to the first tube and the second tube and the upper mold 4131 and lower mold 4132, which would prevent the U-tube 300 from being completely inserted into the perforation of the fin 200. This allows the pusher 411 to continue pushing the U-tube 300 to be completely inserted into the fin 200, avoiding deformation of the U-tube 300 or interruption of insertion caused by the collision between the connecting part and the mold.

[0078] Furthermore, multiple second positioning components 413 can be provided, and these components can be spaced apart along the Y-axis. This allows for multiple second positioning components 413 to be positioned along the length of the U-tube 300, sequentially positioning each segment of the U-tube 300. When the pusher 411 moves close to a particular second positioning component 413, the second positioning component 413 at that position will, through the separation motion of the upper mold 4131 and lower mold 4132 moving away from each other, prevent the pusher 411 from interfering with the second positioning component 413 at that position. This allows the pusher 411 to continue pushing the U-tube 300 towards the perforation of the fin 200. Thus, throughout the entire movement of the U-tube 300 during the fin insertion operation, positioning can be achieved through the second positioning components 413, ensuring the U-tube 300 is accurately inserted into the perforation of the fin 200. The multiple second positioning components 413, spaced apart along the Y-axis, form multiple positioning segments along the length of the U-tube 300. When the pusher 411 moves the U-tube 300, different sections of the U-tube 300 pass sequentially through the corresponding second positioning components 413. The preceding positioning component avoids the pusher 411 when it approaches, and the subsequent positioning component continuously constrains the posture of the U-tube 300. Optionally, multiple second positioning components 413 are provided, and the multiple second positioning components 413 are arranged at intervals along the Y-axis. Each second positioning component 413 includes an upper mold 4131 and a lower mold 4132 arranged along the Z-axis.

[0079] In addition, the U-tube 300 transferred by the clamping mechanism 52 may experience slight attitude deviations due to inertia or vibration. The second positioning component 413, through the mold closing and positioning of the upper and lower molds 4132, can perform secondary attitude calibration of the U-tube 300 before inserting the fins. The shape of the positioning groove matches the outer diameter of the U-tube 300, and can adaptively adjust the horizontal or tilt angle of the U-tube 300 to ensure that the angle and position of the U-tube 300 and the fin 200 perforation are perfectly matched, thereby improving the fin insertion pass rate.

[0080] The structure of the first positioning part 4132a will be further described below, such as Figure 13 , Figure 14 , Figure 15 As shown, in one embodiment, the first positioning part 4132a includes a first positioning groove 41321 and a second positioning groove 41322. The bottom of the first positioning groove 41321 has a first groove bottom wall 41321a for placing the first tube part of the U-tube 300, and the bottom of the second positioning groove 41322 has a second groove bottom wall 41322a for placing the second tube part of the U-tube 300. The first bottom wall 41321a and the second bottom wall 41322a of the tank are horizontally spaced apart along the X-axis; or, the first bottom wall 41321a and the second bottom wall 41322a of the tank are staggered vertically along the X-axis.

[0081] It is understood that each first positioning part 4132a can be used to position one U-tube 300. Therefore, the first positioning groove 41321 of the first positioning part 4132a can be used to position the first tube portion of the U-tube 300, and the second positioning groove 41322 of the first positioning part 4132a can be used to position the second tube portion of the U-tube 300. In addition, the first positioning part 4132a may also include a clearance part, which is located between the first positioning groove 41321 and the second positioning groove 41322, and can be used to clear gaps in the U-tube 300.

[0082] It is understandable that when the U-tube 300 is positioned in the first positioning part 4132a, the first tube part of the U-tube 300 rests on the bottom wall 41321a of the first positioning groove 41321, and the second tube part of the U-tube 300 rests on the bottom wall 41322a of the second positioning groove 41322. When the bottom walls 41321a and 41322a are horizontally spaced along the X-axis, the bottom ends of the first positioning groove 41321 and 41322 are roughly flush, so that the second positioning component 413 can position the U-tube 300 that is inserted into the horizontal perforation position of the fin 200. When the bottom walls 41321a and 41322a are staggered vertically along the X-axis, the two tube parts of the U-tube 300 placed therein are tilted, so that the second positioning component 413 can position the U-tube 300 that is inserted into the tilted perforation position of the fin 200. This facilitates the threading device 40 in threading horizontally placed U-tubes 300, and also facilitates the threading device 40 in threading inclined U-tubes 300.

[0083] This configuration allows the upper mold 4131 and lower mold 4132 of the same finning module 41 to quickly switch the positioning function for horizontal or inclined U-tubes 300 by replacing or adjusting the bottom wall structure of the first positioning part 4132a. This allows for adaptation to different perforation types of fins 200 without replacing the entire module, reducing equipment adjustment costs.

[0084] Furthermore, since the U-tube 300 is in a horizontal position when the clamping mechanism 52 clamps it, the first positioning part 4132a can be further improved to ensure that the U-tube 300 can be accurately adjusted from a horizontal to an inclined position when it is placed into the lower mold 4132 for inserting the inclined U-tube 300. For example... Figure 14 , Figure 15As shown, in one embodiment, the first groove bottom wall 41321a and the second groove bottom wall 41322a are staggered vertically along the X-axis. The first groove bottom wall 41321a is located obliquely above the second groove bottom wall 41322a. The second positioning groove 41322 also includes a first groove side wall 41322b, which is located on the side of the second positioning groove 41322 away from the first positioning groove 41321. The first groove side wall 41322b is connected to the second groove bottom wall 41322a. The first positioning groove 41321 is used to place the first tube portion of the U-tube 300, and the first groove side wall 41322b is used to allow the second tube portion of the U-tube 300 to slide toward the second groove bottom wall 41322a.

[0085] With this configuration, when the clamping mechanism 52 places the U-tube 300 into the first positioning part 4132a, the first section of the U-tube 300 first falls into the higher first positioning groove 41321. After the second section of the U-tube 300 contacts the first groove sidewall 41322b of the second positioning groove 41322, it naturally swings downwards under its own weight, with the first section as the rotation center. At the same time, the smooth curved surface design of the first groove sidewall 41322b provides guidance for the second section of the U-tube 300, allowing it to slide along the first groove sidewall 41322b to the second groove bottom wall 41322a, completing the automatic adjustment from a horizontal to an inclined posture. This achieves the positioning of the first and second sections of the U-tube 300 on the first and second groove bottom walls 41321a and 41322a, respectively. This eliminates the need for additional rotary drive components or clamping adjustment mechanisms, reducing the number of parts and the complexity of the control logic, and lowering equipment maintenance costs. Furthermore, through the guiding effect of the first groove sidewall 41322b and the height difference between the two groove bottom walls, the second tube of the U-tube 300 slides along the preset trajectory and is finally stably placed on the second groove bottom wall 41322a, forming an inclined posture that perfectly matches the angle of the inclined tube perforation. This avoids manual calibration, ensures the consistency of the U-tube 300's inclination angle, and guarantees precise alignment with the inclined perforation of the fin 200 during fin insertion.

[0086] Furthermore, the clamping mechanism 52 only needs to place the horizontal U-tube 300 on the first positioning part 4132a, and the subsequent posture conversion is completed autonomously by the positioning structure. This also reduces the number of steps required by the clamping device 50, eliminating the need to pre-adjust the tilt angle during clamping. The placement-and-positioning design shortens the preparation time of the U-tube 300 at the pushing station 412, adapts to the continuous operation requirements of the production line, and improves the overall threading efficiency.

[0087] like Figure 15As shown, optionally, the first positioning groove 41321 has two extension arms arranged opposite to each other along the X-axis direction. The two extension arms are respectively connected to the bottom wall 41321a of the first groove. The side of the extension arm away from the bottom wall 41321a of the first groove has a first guide wall 41321b. The two first guide walls 41321b are arranged gradually away from the bottom wall of the groove along the Z-axis direction.

[0088] This configuration allows the first positioning groove 41321 to be flared, with a wider portion near the opening and gradually narrowing towards the bottom wall 41321a. When the U-tube 300 is placed in the first positioning part 4132a, the flared first positioning groove 41321 facilitates the insertion of the first tube portion of the U-tube 300, thereby facilitating the positioning of the U-tube 300 in the first positioning part 4132a.

[0089] The second positioning groove 41322 has a second guide wall 41322c, and the first groove side wall 41322b connects the second guide wall 41322c and the second groove bottom wall 41322a. The second positioning groove 41322 also has a second groove side wall, which is arranged opposite to the first groove side wall 41322b along the X-axis. The second guide wall 41322c and / or the first groove side wall 41322b are arranged from one end near the second groove bottom wall 41322a along the Z-axis away from the second groove side wall.

[0090] This configuration allows the second positioning groove 41322 to be flared, with the width of the second positioning groove 41322 near the opening being wider than the width of the second positioning groove 41322 near the bottom wall. The second tube of the U-tube 300 can slide into the second positioning groove 41322 along the second guide wall 41322c and slide along the side wall 41322b of the first groove towards the bottom wall 41322a of the second groove, allowing the second tube to slide to the bottom wall 41322a of the second groove. This enables the U-tube 300 to automatically adjust from a horizontal to an inclined posture, thus positioning the first and second tubes of the U-tube 300 on the bottom walls 41321a and 41322a of the first and second grooves, respectively.

[0091] The second positioning unit 4131a will be described below, such as Figure 13 As shown, the second positioning part 4131a includes a fifth positioning groove 41311 and a sixth positioning groove 41312. When the upper mold 4131 and the lower mold 4132 are closed, the fifth positioning groove 41311 is used to dock with the first positioning groove 41321, and the sixth positioning groove 41312 is used to dock with the second positioning groove 41322, so as to limit the U tube 300 between the first positioning part 4132a and the second positioning part 4131a.

[0092] Understandably, when the fifth positioning groove 41311 aligns with the first positioning groove 41321, it can abut against the upper end of the first tube portion of the U-tube 300 located in the first positioning groove 41321. When the sixth positioning groove 41312 aligns with the second positioning groove 41322, it can abut against the upper end of the second tube portion of the U-tube 300 located in the second positioning groove 41322. This achieves the limitation of the U-tube 300 and prevents the U-tube 300 from vibrating and shifting when the pusher 411 pushes the U-tube 300 toward the perforation of the fin 200, thus preventing the U-tube 300 from being accurately positioned with the perforation of the fin 200.

[0093] The second positioning component 413 may further include an upper positioning member 4133 that can be disposed on one side of the upper mold 4131 along the Y-axis direction. The fifth positioning groove 41311 and the sixth positioning groove 41312 are formed on the upper mold 4131 and the upper positioning member 4133. When the upper mold 4131 and the lower mold 4132 are closed, the upper positioning member 4133 is located on one side of the lower mold 4132 along the Y-axis direction.

[0094] The upper positioning member 4133 has an extension arm 41314 that connects to the fifth positioning groove 41311. Multiple extension arms 41314 extend toward the lower mold 4132 along the Z-axis direction. Each fifth positioning groove 41311 is provided with two extension arms 41314. The distance between the two extension arms 41314 corresponding to each fifth positioning groove 41311 gradually moves away from the lower mold 4132 along the Z-axis direction.

[0095] With this configuration, the additional upper positioning member 4133 can be used to position the U-tube 300 downwards via the extension arm 41314 located on the upper positioning member 4133. The two extension arms 41314 are positioned gradually away from each other, which facilitates guiding the upper positioning member 4133 to position the U-tube 300.

[0096] In addition, the upper mold 4131 may also have a positioning rib 41313, which protrudes towards the lower mold 4132. The first positioning part 4132a and / or the second positioning part 4131a may be located on the side of the positioning rib 41313 facing the lower mold 4132. The positioning rib 41313 may be inserted and engaged with the first positioning groove 41321 and / or the second positioning groove 41322 to position the upper mold 4131 and the lower mold 4132 when they are closed. This arrangement ensures that the upper mold 4131 and the lower mold 4132 are accurately positioned and engaged when they are closed, thus facilitating the mold closing operation of the upper mold 4131 and the lower mold 4132.

[0097] like Figure 14 , Figure 15As shown, in one embodiment, the lower mold 4132 further has a plurality of third positioning portions 4132b facing the upper mold 4131, each of the third positioning portions 4132b being disposed between two adjacent first positioning portions 4132a, and each of the third positioning portions 4132b being symmetrically distributed with any adjacent first positioning portion 4132a.

[0098] It is understandable that when the first positioning groove 41321 and the second positioning groove 41322 of the first positioning part 4132a are staggered vertically, the first positioning part 4132a can be used to position the tilted U-tube 300. The bottom wall 41321a of the first groove 41321 is located above the bottom wall 41322a of the second groove 41322. Therefore, when the first positioning groove 41321 is on the left and the second positioning groove 41322 is on the right, the U-tube 300 can only be positioned in a single tilted posture to the lower left. Since the second positioning component 413 cannot be used for positioning the U-tube 300 that is tilted to the lower right, the present invention provides a third positioning component 4132b in the lower mold 4132. The third positioning component 4132b is symmetrically distributed with the second positioning component 4131a. When the first positioning component 4132a can position the U-tube 300 that is tilted to the lower left, the second positioning component 4131a can position the U-tube 300 that is tilted to the lower right, so that a single second positioning component 413 can simultaneously adapt to the positioning operation of U-tubes 300 with different tilt postures.

[0099] Similar to the third positioning part 4132b, the present invention can also provide a plurality of fourth positioning parts on the upper mold 4131, which are provided one-to-one with the plurality of third positioning parts 4132b provided on the lower mold 4132. After the upper mold 4131 and the lower mold 4132 are closed, the U-tube 300 positioned on the third positioning part 4132b can be completely fixed, thereby facilitating the pusher 411 to pass the positioned U-tube 300 through the perforation of the fin 200 according to a predetermined path.

[0100] like Figure 15 As shown, in one embodiment, the third positioning part 4132b includes a third positioning groove 41323 and a fourth positioning groove 41324. The third positioning groove 41323 is symmetrically arranged with the first positioning groove 41321 of the adjacent first positioning part 4132a, and the fourth positioning groove 41324 is symmetrically arranged with the second positioning groove 41322 of the adjacent first positioning part 4132a.

[0101] It is understandable that when the third positioning groove 41323 is symmetrically arranged with the first positioning groove 41321 of the adjacent first positioning part 4132a, they can be symmetrically arranged along the YZ plane, that is, the YZ plane formed by the intersection of the Y axis and the Z axis. The bottom wall of the third positioning groove 41323 is at the same height as the bottom wall of the first positioning groove 41321. When the fourth positioning groove 41324 is symmetrically arranged with the second positioning groove 41322 of the adjacent first positioning part 4132a, they can be symmetrically arranged along the YZ plane, and the bottom wall of the fourth positioning groove 41324 is at the same height as the bottom wall of the second positioning groove 41322. In this case, the first tube portion of the U-tube 300 can be placed in the first positioning groove 413 of the first positioning part 4132a by the cooperation of the third positioning part 4132b with the first positioning part 4132a. 21. The second tube portion of the U-tube 300 is placed in the third positioning groove 41323 of the third positioning part 4132b, or the first tube portion of the U-tube 300 is placed in the second positioning groove 41322 of the first positioning part 4132a, and the second tube portion of the U-tube 300 is placed in the fourth positioning groove 41324 of the third positioning part 4132b. The U-tube 300 can be placed horizontally in adjacent first positioning parts 4132a and third positioning parts 4132b, so that the second positioning assembly 413 for threading oblique U-tube 300 can also be used for threading horizontal U-tube 300.

[0102] Thus, by utilizing the consistent height of the symmetrically arranged bottom walls of the slots, the first and second sections of the U-tube 300 can be placed on adjacent first positioning parts 4132a and third positioning parts 4132b respectively, achieving stable horizontal placement. This allows for adaptation to different types of U-tube 300 requirements without the need to change modules. It eliminates the need for separate positioning components for horizontal or inclined U-tube 300s, reducing module replacement or parameter adjustment time due to specification changes and lowering equipment maintenance and operating costs. The same component is compatible with positioning U-tube 300s in three orientations: left-lower tilt, right-lower tilt, and horizontal placement, reducing device changeover waiting time, adapting to the continuous operation requirements of production lines, and significantly increasing the wafer loading rate per unit time.

[0103] like Figure 1 , Figure 4 , Figure 11As shown, in one embodiment, the loading station 101, the inserting station 102, and the unloading station 103 are arranged sequentially along the X-axis direction. The feeding device 20 includes multiple feeding modules. The loading station 101, the inserting station 102, and the unloading station 103 are respectively provided with the feeding modules. The feeding module includes a first track component 21, a push plate 22, and a push plate drive component 23. The first track component 21 is located on one side of the worktable 10 along the Y-axis direction and extends along the X-axis direction. The push plate drive component 23 is used to drive the push plate 22 to reciprocate along the first track component 21 to push the fin 200 to move along the worktable 10.

[0104] Understandably, when the loading station 101, the fin threading station 102, and the unloading station 103 are all set sequentially in the same direction, the worktable 10 can be extended along the X-axis to facilitate the continuous arrangement of the first reference element 31 (the positioning reference along the Y-axis) of the fin positioning device 30 along the entire worktable 10. When the fin 200 is transferred between the stations, the first reference element 31 is always used as the single-sided positioning reference to avoid reference offset due to station switching, ensuring the consistency of the fin 200's position in the Y-axis direction, and providing a basis for the precise docking of the subsequent fin threading device 40 and the U-tube 300.

[0105] Furthermore, by configuring the feeding device 20 with multiple feeding modules, and assigning one feeding module to each of the loading station 101, the inserting station 102, and the unloading station 103, instead of a single long feeding module arranged along the entire length of the workbench 10, overlap and interference between the long module and other structures in the production line (such as the tube clamping device 50 and the inserting device 40) in their movement trajectories can be avoided. Each module only covers the transfer stroke of its corresponding station, resulting in a more compact structure that adapts to the space constraints on the side of the workbench 10, thus improving the overall rationality of the equipment layout. In addition, when one feeding module is assigned to each of the loading station 101, the inserting station 102, and the unloading station 103, the feeding modules of the loading, inserting, and unloading stations 103 work independently, and the operations of each station are parallel and do not conflict, reducing the waiting time for sequential transfer of a single module and significantly improving the continuous operation efficiency of the production line.

[0106] The structure of the first positioning component 32 is described below, such as... Figure 2 , Figure 3As shown, in one embodiment, the first positioning component 32 includes a base 321, a first positioning plate 322, and a positioning drive 323. The base 321 is disposed on the worktable 10. The first positioning plate 322 is movably connected to the base 321 along the Y-axis direction. The first positioning plate 322 and the first reference member 31 are disposed opposite to each other along the Y-axis direction. The positioning drive 323 is used to drive the first positioning plate 322 to reciprocate along the Y-axis direction to push the fin 200 to be positioned with the first reference member 31.

[0107] The base 321 can be installed at the bottom of the worktable 10. The worktable 10 can have multiple strip grooves through it along the Z-axis. The strip grooves extend along the Y-axis. The first positioning plate 322 is connected to the base 321 in the Y-axis direction by multiple connecting rods 324 passing through the strip grooves. The positioning drive 323 can be a cylinder. The cylinder drives the multiple connecting rods 324 to move along the Y-axis, thereby causing the first positioning plate 322 to move closer to or further away from the first reference member 31 along the Y-axis.

[0108] The first positioning plate 322 and the first reference member 31 are arranged opposite each other along the Y-axis. The positioning drive member 323 drives the first positioning plate 322 to move back and forth, which can push the fin 200 to abut against the first reference member 31. The distance between the two can be adjusted to accommodate fins 200 with different expansion heights. No matter how the specifications of the fin 200 change, the first reference member 31 can be used as a unified reference to complete the positioning, ensuring the consistency of the Y-axis position of the fin 200 in the threading station 102, and providing a basis for the accurate insertion of the U-tube 300 into the hole.

[0109] The first reference element 31 may include a positioning substrate. The other end of the fin 200 along the Y-axis abuts against the first positioning plate 322, pushing the fin 200 toward the positioning substrate, so that one end of the fin 200 along the Y-axis abuts against the positioning substrate, thereby positioning the fin 200 on the positioning substrate. To avoid interference of the positioning reference with the tube-piercing operation of the fin 200, the first positioning plate 322 and the positioning substrate can be placed on the worktable 10 along the thickness direction. The first positioning plate 322 and the first reference element 31 abut only against the lower edge of the fin 200, rather than covering the entire width of the fin 200, so as to accurately avoid the tube-piercing area in the middle of the fin 200.

[0110] Understandably, since the positioning plate needs to move along the Y-axis, while the push plate needs to move along the X-axis to move the fins, there is a possibility that the positioning plate may interfere with the push plate. Therefore, the bottom of the push plate is provided with a clearance groove 221 extending along the Y-axis. The positioning plate is movable along the Y-axis within the clearance groove, so that when the push plate pushes the fins to move, it can avoid the movement of the positioning plate along the Y-axis while moving the fins.

[0111] like Figure 1 , Figure 10 As shown, in one embodiment, the workbench 10 further has a buffer station 104 located between the unloading station 103 and the threading station 102; The fin threading production line 100 also includes a fin limiting device 60, which is located at the threading station 102. The fin limiting device 60 is used to position the fin 200 located at the threading station 102 and to transfer the threaded fin 200 to the buffer station 104.

[0112] Understandably, when the finning device 40 inserts multiple U-tubes 300 into the fins 200 located at multiple finning stations 102, in order to prevent the fins 200 from shifting and causing them to fail to be accurately positioned with the U-tubes 300, the fin limiting device 60 can be used to accurately limit the fins 200 on the finning station 102. This can prevent the fins 200 from shifting due to force or vibration during the insertion of the U-tubes 300, ensure the relative positional accuracy of the fins 200 through the hole and the U-tubes 300, avoid finning misalignment or bending of the U-tubes 300, and improve the product qualification rate.

[0113] It is understandable that when the workbench 10 has multiple threading stations 102, each threading station 102 can be equipped with a corresponding buffer station 104. That is, the buffer station 104 is located at the unloading end of the corresponding threading station 102. When the workbench 10 is equipped with multiple threading stations 102, each threading station 102 corresponds to an independent buffer station 104, which can spatially separate the working areas of adjacent threading stations 102. This can prevent mechanical interference caused by the threading devices 40 and feeding devices 20 of different threading stations 102 being too close during operation, ensuring the safety of multi-station parallel operation. In addition, the fins 200 of multiple threading stations 102 can be synchronously transferred to the corresponding buffer station 104 through their respective limiting devices, realizing parallel processing of threading and buffering, rather than sequential operation at a single station. This can effectively shorten the waiting time in batch production and is more suitable for scenarios where multiple specifications of fins 200 or multiple sets of U-tubes 300 are threaded at the same time, effectively improving the overall capacity of the production line.

[0114] The structure of the fin limiting device 60 will be further described below, such as... Figure 10As shown, the fin limiting device 60 includes a second driving component 61 and a second clamping component 62. The second clamping component 62 has two second grippers 621 arranged opposite to each other along the X-axis. The two second grippers 621 are used to move closer or further apart relative to each other along the X-axis to clamp or release the fin 200 along the X-axis. The second driving component 61 is driven to connect to the second clamping component 62. The second driving component 61 is used to drive the second clamping component 62 to reciprocate along the X-axis to transfer the fin 200 after tube insertion from the fin insertion station 102 to the buffer station 104.

[0115] The second clamping assembly 62 may further include a second clamping drive 622 and a jaw beam 623. The second clamping drive 622 drives two second jaws 621 to move closer or further apart along the jaw beam 623. The jaw beam 623 can extend along the X-axis, allowing the two second jaws 621 to move closer or further apart along the X-axis under the drive of the second clamping drive 622. This achieves clamping of both sides of the fin 200 in the width direction along the X-axis, thereby positioning the fin 200. It is understood that since the dimensions of fins 200 of different specifications may differ along the width direction, by setting the two second jaws 621 to move closer or further apart along the X-axis, the clamping distance can be adaptively adjusted according to the fin width (X-axis dimension), achieving stable clamping of fins of different specifications. The clamping points are located on both sides of the fin width direction, avoiding obstruction or damage to the central tube insertion area of ​​the fin, ensuring the stability of the fin posture during insertion, and preventing misalignment of the U-tube 300 due to fin offset.

[0116] Understandably, the second drive component drives the second clamping component to reciprocate along the X-axis, which can directly transfer the fins after tube insertion to the buffer station after the fin insertion station is positioned, without the need for an additional independent transfer mechanism.

[0117] Additionally, the fin limiting device 60 may include a second frame 64 and a third mounting frame 65. The second frame 64 extends along the X-axis direction, and the third mounting frame 65 is slidably mounted on the second frame 64 along the X-axis direction. The second clamping assembly 62 is slidably mounted on the third mounting frame 65 along the Z-axis direction. The second drive assembly 61 may include a first sub-drive member 611 and a second sub-drive member 612. The first sub-drive member 611 may be disposed within the third mounting frame 65 and drive and connect to the second frame 64, allowing the third mounting frame 65 to reciprocate along the X-axis direction on the second frame 64. The second sub-drive member 612 may be disposed on the third mounting frame 65 and drive and connect to the second clamping assembly 62, enabling the second sub-drive member 612 to drive the second clamping assembly 62 to move up and down along the Z-axis direction to avoid the transfer process of the fin 200 to the fin insertion station 102. After the fin is in place, it is lowered for clamping and positioning, ensuring that there is no spatial movement conflict between the fin limiting device and the feeding device.

[0118] The structure of the fin limiting device 60 will be further described below, such as... Figure 1 , Figure 10 As shown, in one embodiment, the fin limiting device 60 further includes a side-pushing component 63. The side-pushing component 63 is disposed on the side of the second clamping component 62 near the buffer station 104. The side-pushing component 63 includes a side-pushing drive component 631 and a side-pushing component 632. The side-pushing drive component 631 is used to drive the side-pushing component 632 to move along the X-axis direction to push the fin 200 from the buffer station 104 to the unloading station 103.

[0119] The side-push drive component 631 can be configured as a cylinder, and the side-push component 632 can be configured as a side-push plate. Thus, when the second clamping assembly 62 moves along the X-axis and adjusts the relative position of the fin 200 held by the second clamping assembly 62 with the multiple U-tubes 300 on the inserting device 40, the side-push component 63 can continue to push the fin 200 located at the buffer station 104 towards the lower feeding station 103 a certain distance, avoiding interference between the second clamping assembly 62 and the fin 200 at the buffer station 104. The side-push component 63 is located on the side of the second clamping assembly 62 closest to the buffer station 104. The clamping assembly 62 moves synchronously along the X-axis. Through its integrated design with the second clamping assembly 62, the side-pushing assembly 63 can directly complete the subsequent pushing action on the same motion trajectory after the second clamping assembly 62 transfers the fin 200 to the buffer station 104. This reduces the need for independent drive components, optimizes the equipment space layout, and allows the second clamping assembly 62 to return to the inserting station 102 after completing the buffer transfer without entering the unloading area. This spatially isolates the motion trajectories of the two components and avoids the risk of mechanical collision.

[0120] like Figure 16 , Figure 17 As shown, in one embodiment, the fin threading production line 100 further includes a loading and unloading coordination device 70. The loading and unloading coordination device 70 is located near the loading station 101 and / or the unloading station 103. The loading and unloading coordination device 70 includes a stacking assembly 71 and a drive module 72. The stacking assembly 71 has a plurality of unloading stations spaced apart along the Z-axis. The drive module 72 is used to drive the plurality of unloading stations to move along the Z-axis. The X-axis, the Y-axis, and the Z-axis intersect each other.

[0121] The loading and unloading coordination device 70 can be located near the loading position to provide multiple fins 200 stacked along the Z-axis for the loading station 101. Alternatively, the loading and unloading coordination device 70 can be located near the unloading position so that the fins 200 completed at the unloading station 103 can be stacked along the Z-axis on the loading and unloading coordination device 70. Or, both the loading station 101 and the unloading station 103 can be equipped with the loading and unloading coordination device 70, so that the fin threading production line 100 can better realize the loading and unloading operations.

[0122] It is understandable that when the loading and unloading coordination device 70 includes a stacking assembly 71 and a drive module 72, and the drive module 72 drives the stacking assembly 71 to move multiple unloading stations spaced apart along the Z-axis direction, after the fin 200 is placed at the top unloading station, the top loading station 101 can sink, while the bottom unloading station can rise. This makes it easier for the operator to always be able to pick up or place the fin 200 at a higher operating position, which is beneficial for the operator to carry out the loading and unloading operations of the fin 200.

[0123] The structure of the stacking assembly 71 is described below, such as... Figure 16 , Figure 17 As shown, the material stacking assembly 71 has two sets of conveying groups 71a spaced apart along the X-axis. Each set of conveying groups 71a includes two transmission chains 711 spaced apart along the Y-axis. Each transmission chain 711 includes two sprockets 7111 spaced apart along the Z-axis, and a chain 7112 sleeved and mounted on the two sprockets 7111. The outer periphery of the chain 7112 has multiple spaced material clamping grooves 7113. The multiple material clamping grooves 7113 on opposite sides of the two sets of conveying groups 71a cooperate to form multiple material discharging stations. The drive module 72 is used to drive the two conveying groups 71a to rotate in opposite directions, so as to drive the multiple material discharging stations to move up and down along the Z-axis.

[0124] It is understandable that when the stacking assembly 71 has two sets of conveyor groups 71a spaced apart along the X-axis, and each set of conveyor groups 71a includes two sets of conveyor chains spaced apart along the Y-axis, the stacking assembly 71 can include four conveyor chains, each extending along the Z-axis. Each conveyor chain includes two sprockets 7111 spaced apart along the Z-axis, and a chain 7112 fitted onto the two sprockets 7111. Each conveyor chain's chain 7112 has a straight chain portion extending along the Z-axis. When each chain 7112 has multiple spaced-apart material slots 7113 on its outer periphery, the straight chain portion also has multiple spaced-apart material slots 7113. A feeding station can be formed by the slotted materials located on the same horizontal plane between the four straight chain sections, and the fin 200 can be positioned at four points. It can form an encircling positioning from the four corners or edge areas of the fin 200 to prevent the fin 200 from tilting, shifting or falling during the Z-axis lifting process. It is suitable for the stable bearing of stacked fins.

[0125] When the drive module 72 drives the two conveyor groups 71a to rotate in opposite directions, that is, the sprockets 7111 of the two adjacent transmission chains 711 along the X-axis can rotate in opposite directions (such as one group rotating clockwise and the other group rotating counterclockwise), so that the straight chain sections on opposite sides of the two chains 7112 can rise or fall simultaneously. It can be understood that when the conveyor group 71a rotates, the two conveyor chains of the conveyor group 71a that are spaced apart along the Y-axis rotate in the same direction. Therefore, the four straight chain sections located inside the stacking assembly 7171 can rise or fall simultaneously, thereby realizing the lifting and lowering movement of multiple unloading stations along the Z-axis.

[0126] like Figure 17 , Figure 18 As shown, in one embodiment, the stacking assembly 71 is provided in multiple sets, and the drive module 72 is provided in multiple sets. The multiple drive modules 72 are connected to the multiple sets of stacking assemblies 71 in a one-to-one drive connection. Each drive module 72 includes a stacking drive component 721, a drive shaft 722, and multiple angle actuators 723. The stacking drive component 721 is driven to connect to the drive shaft 722. The two ends of the drive shaft 722 are respectively connected to the two conveying groups 71a corresponding to the stacking assembly 71 through the angle actuators 723, so as to drive the two conveying groups 71a corresponding to the stacking assembly 71 to rotate in opposite directions.

[0127] It is understandable that since a stacking assembly 71 includes two conveyor groups 71a spaced apart along the X-axis, and each conveyor group 71a includes two transmission chains 711 spaced apart along the Y-axis, the stacking assembly 71 may also include linkage rods 712 and 712. The two transmission chains 711 spaced apart along the Y-axis are driven to rotate synchronously in the same direction through connecting rods. One end of the angle actuator 723 can be driven to connect to the corresponding connecting rod, and the other end of the angle actuator 723 can be driven to connect to the transmission shaft 722. The stacking drive 721 can be a motor. When the stacking drive 721 drives the transmission shaft 722 to rotate, it can transmit power to the linkage rod 712 through the angle actuator 723 to change the transmission direction of the transmission shaft 722, thereby driving the two linkage rods 712 to rotate in opposite directions, thereby driving the two conveyor groups 71a to rotate in opposite directions, so that multiple unloading stations move up and down along the Z-axis.

[0128] Or such as Figure 19 As shown, in another embodiment, the stacking assembly 71 is provided in multiple sets, and the drive module 72 drives and connects multiple sets of the stacking assembly 71. The drive module 72 includes a stacking drive 721, a drive shaft 722, and multiple angle actuators 723. The stacking drive 721 drives and connects to the drive shaft 722. The two conveying groups 71a of each set of the stacking assembly 71 are driven and connected to the drive shaft 722 through the angle actuators 723, so that the stacking drive 721 drives the two conveying groups 71a of the multiple sets of the stacking assembly 71 to rotate in opposite directions.

[0129] Unlike the above-described implementation, the drive shaft 722 of the drive module 72 can extend to other stacking assemblies 71. The linkage rods 712 of other stacking assemblies 71 can be connected to the drive shaft 722 via corresponding angle actuators 723. When the stacking drive unit 721 drives the drive shaft 722 to rotate, it can simultaneously transmit power to multiple stacking assemblies 71 via the corresponding angle actuators 723, thereby allowing multiple unloading stations of each stacking assembly 71 to rise and fall simultaneously along the Z-axis. This configuration, on the one hand, drives multiple stacking assemblies 71 with a single stacking drive unit 721 and drive shaft 722, reducing the need for independent drive modules 72 and eliminating the need for a separate drive source for each stacking assembly 71, thus reducing hardware costs and maintenance complexity. On the other hand, the drive shaft 722 transmits power synchronously to each stacking assembly 71 through the angle drive 723, so that the unloading station of all stacking assemblies 71 is raised and lowered synchronously along the Z-axis, avoiding material interference or misalignment of process connection caused by asynchronous raising and lowering of each group. It is especially suitable for scenarios where stacking assemblies 71 are set up at both the loading station 101 and the unloading station 103, ensuring coordinated loading and unloading actions.

[0130] like Figure 16As shown, in one embodiment, the loading and unloading coordination device 70 further includes a positioning module 73. The positioning module 73 includes a second positioning drive 731 and a second reference 732. The second positioning drive 731 and the second reference 732 are respectively disposed on both sides of the stacking assembly 71 along the Y-axis direction. The second positioning drive 731 is used to drive the fin 200 to move along the Y-axis direction toward the second reference 732, so as to position the fin 200 between the second positioning drive 731 and the second reference 732.

[0131] The second reference member 732 can be set on one side of the stacking assembly 71 along the Y-axis direction. The fin 200 on the Y-axis direction, i.e., the side of the fin 200 that has expanded, abuts against the second reference member 732. The positioning module 73 can also include a second positioning plate 733, which can be set on the other side of the stacking assembly 71 along the Y-axis direction. The second positioning drive member 731 drives the second positioning plate 733 to move towards the other side of the fin 200 along the second direction, so that the distance between the second positioning plate 733 and the second reference member 732 is adjustable. This allows fins 200 with different expansion sizes to be uniformly positioned with the second reference member 732 as the positioning reference, and fins 200 at each layer of feeding station to be aligned along the Y-axis direction. This avoids fin stacking tilting and collapse due to accumulated errors during stacking, ensuring stable storage and transfer of fins 200 by the loading and unloading device 70, and meeting the stacking requirements of fins 200 with different expansion sizes on the feeding device. Furthermore, fins 200 with different heights can be positioned using the same reference (second reference 732), and can also form a unified reference with the fin positioning device 30 (first reference 31) of the workbench 10. Before loading, the fins 200 are pre-positioned by the second reference 732, and after entering the fin threading station 102, they can be quickly aligned directly with the first reference 31, reducing repeated positioning time and improving overall production efficiency.

[0132] In addition, such as Figure 1 , Figure 2 As shown, the fin threading production line 100 of the present invention further includes a lifting device 80, which is provided at the loading station and / or unloading station. The lifting device 80 includes a liftable top plate, and the workbench is provided with a receiving groove for accommodating the top plate. The top plate is used to place the fins.

[0133] Understandably, when fins 200 are fed to the loading station 101 using a robotic arm to hold them, if the fins 200 are placed directly on the loading station 101, the gripping part of the robotic arm located below the fins 200 will be positioned between the worktable 10 and the fins 200, making it difficult to place the fins 200 properly on the worktable 10. Therefore, the top plate of the lifting device 80 is raised to place the fins 200 on the top plate, and then the top plate is lowered into the receiving slot, causing the fins 200 to fall back onto the worktable 10. The platform 10 is raised via a top plate to receive the fins 200 held by the robotic arm. This prevents the gripping part of the robotic arm below the fins 200 from directly contacting the surface of the platform 10, thus preventing the fins 200 from being placed stably due to spatial interference and ensuring a smooth feeding process. Furthermore, the top plate provides an independent placement platform when it is raised. After the fins 200 are placed, they descend with the top plate into the receiving slot and naturally fall back to the preset position on the platform 10. This avoids positional deviation when placed manually or by the robotic arm and ensures accurate transfer of the fins 200 by the subsequent feeding device 20.

[0134] In addition, when a lifting device is installed at the unloading station 103, it is also beneficial for the robot to grasp the fins 200 during unloading, which will not be elaborated here.

[0135] The above description is merely an exemplary embodiment of the present invention and does not limit the scope of protection of the present invention. Any equivalent structural transformations made based on the technical concept of the present invention and the contents of the specification and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present invention.

Claims

1. A fin threading production line, characterized in that, include: The workbench has a loading station, a threading station, and an unloading station; A feeding device is provided on the workbench and is used to transfer the fins between the loading station, the fin threading station and the unloading station. A fin positioning device is provided on the worktable. The fin positioning device includes a first reference member and a first positioning component arranged opposite to each other along the Y-axis direction. The first positioning component is used to move along the Y-axis direction to position the fin on the first reference member. A tube clamping device, located on one side of the workbench, is used to clamp and transfer multiple U-tubes, and to adjust the spacing between adjacent U-tubes according to the fin perforation position; and A fin threading device is located on one side of the workbench and is set corresponding to the fin threading station. The fin threading device is used to receive the U-tube transferred by the tube clamping device and insert the U-tube into the perforation of the fin along the Y-axis direction.

2. The fin threading production line as described in claim 1, characterized in that, The tube clamping device includes a first frame, a tube clamping mechanism, and a moving drive assembly. The tube clamping mechanism is movably mounted on the first frame along the X-axis and is drivenly connected to the moving drive assembly. The tube clamping mechanism is used to clamp multiple U-tubes, and the moving drive assembly is used to drive the tube clamping mechanism to move along the X-axis to transfer the clamped multiple U-tubes to the inserting device. The X-axis intersects the Y-axis.

3. The fin threading production line as described in claim 2, characterized in that, The tube clamping mechanism includes a mounting frame and multiple clamping modules. Each clamping module is movably mounted on the mounting frame along the X-axis. Each clamping module includes a distance adjustment drive assembly and at least one first clamping assembly. Each first clamping assembly is used to clamp a U-tube. The distance adjustment drive assembly is used to drive the clamping module to move along the X-axis to adjust the distance between adjacent clamping modules.

4. The fin threading production line as described in claim 3, characterized in that, The first clamping assembly includes a clamping drive and two first jaws. Each first jaw has a clamping portion. The clamping drive is used to drive the two first jaws to rotate around the Z-axis, so that the clamping portion can rotate and switch between a clearance position and a working position. When the clamping portion is in the clearance position, it can be inserted into the gap of the U-tube along the Z-axis. When the clamping portion is in the working position, it can overlap with the two tube portions of the U-tube to lift the U-tube. The X-axis, Y-axis, and Z-axis intersect each other.

5. The fin threading production line as described in claim 4, characterized in that, The tube clamping device further includes a first lifting drive component, which is used to drive the tube clamping mechanism to reciprocate along the Z-axis direction.

6. The fin threading production line as described in claim 1, characterized in that, The fin threading device is provided in at least two sets, and the at least two sets of the fin threading device are spaced apart along the X-axis direction. At least one set of the fin threading device is used to insert horizontally arranged U-tubes along the Y-axis direction into the flat tube through holes of the fins, and at least one set of the fin threading device is used to insert inclinedly arranged U-tubes along the Y-axis direction into the inclined tube through holes of the fins. The X-axis intersects the Y-axis.

7. The fin threading production line as described in claim 1, characterized in that, The inserting device includes an inserting module, which has a pusher and a pusher station. The pusher station is used to receive multiple U-tubes from the tube clamping device. The pusher is used to move along the Y-axis direction to insert the multiple U-tubes at the pusher station into the perforations of the fins at the inserting station along the Y-axis direction.

8. The fin threading production line as described in claim 7, characterized in that, The inserting module includes a second positioning component located at the pushing station. The second positioning component includes an upper mold and a lower mold arranged along the Z-axis. The lower mold has multiple first positioning parts facing the upper mold, each of which is used to place the U-tube. The upper mold has multiple second positioning parts, and the multiple second positioning parts are connected to the multiple first positioning parts. The positioning parts are positioned one-to-one, and the upper mold and / or the lower mold are used to close the mold along the Z-axis direction to mate the multiple second positioning parts with the multiple first positioning parts one-to-one to position the U-tube. The X-axis, the Y-axis, and the Z-axis intersect each other.

9. The fin threading production line as described in claim 8, characterized in that, The second positioning component is provided in multiple ways, and the multiple second positioning components are arranged at intervals along the Y-axis direction. Each second positioning component includes an upper mold and a lower mold arranged along the Z-axis.

10. The fin threading production line as described in claim 8, characterized in that, The first positioning part includes a first positioning groove and a second positioning groove. The bottom of the first positioning groove has a first groove bottom wall for placing a first tube part of the U-tube, and the bottom of the second positioning groove has a second groove bottom wall for placing a second tube part of the U-tube. The first and second bottom walls of the tank are horizontally spaced apart along the X-axis; or, the first and second bottom walls of the tank are staggered vertically along the X-axis.

11. The fin threading production line as described in claim 10, characterized in that, The first groove bottom wall and the second groove bottom wall are staggered vertically along the X-axis. The first groove bottom wall is located diagonally above the second groove bottom wall. The second positioning groove also includes a first groove side wall. The first groove side wall is located on the side of the second positioning groove away from the first positioning groove. The first groove side wall is connected to the second groove bottom wall. The first positioning groove is used to place the first tube part of the U-tube. The first groove side wall is used to allow the second tube part of the U-tube to slide toward the second groove bottom wall.

12. The fin threading production line as described in claim 11, characterized in that, The lower mold also has multiple third positioning parts facing the upper mold. The third positioning parts and the first positioning parts are alternately distributed along the X-axis direction, and each of the third positioning parts is symmetrically distributed with any adjacent first positioning part.

13. The fin threading production line as described in claim 12, characterized in that, The third positioning part includes a third positioning groove and a fourth positioning groove. The third positioning groove is symmetrically arranged with the first positioning groove of the adjacent first positioning part, and the fourth positioning groove is symmetrically arranged with the second positioning groove of the adjacent first positioning part.

14. The fin threading production line as described in claim 1, characterized in that, The loading station, inserting station, and unloading station are arranged sequentially along the X-axis. The feeding device includes multiple feeding modules. The loading station, inserting station, and unloading station are respectively equipped with the feeding modules. The feeding module includes a first track component, a push plate, and a push plate drive component. The first track component is located on one side of the worktable along the Y-axis and extends along the X-axis. The push plate drive component is used to drive the push plate to reciprocate along the first track component to push the fins to move along the worktable. The X-axis intersects the Y-axis.

15. The fin threading production line as described in claim 1, characterized in that, The first positioning component includes a base, a positioning plate, and a positioning drive. The base is disposed on the worktable, and the positioning plate is movably connected to the base along the Y-axis. The positioning plate and the first reference member are disposed opposite each other along the Y-axis. The positioning drive is used to drive the positioning plate to reciprocate along the Y-axis to push the fin to be positioned with the first reference member.

16. The fin threading production line as described in claim 1, characterized in that, The workbench also has a buffer station located between the unloading station and the threading station; The fin threading production line also includes a fin limiting device, which is located at the threading station. The fin limiting device is used to position the fin located at the threading station and to transfer the threaded fin to the buffer station.

17. The fin threading production line as described in claim 16, characterized in that, The fin limiting device includes a second driving component and a second clamping component. The second clamping component has two second jaws arranged opposite each other along the X-axis. The two second jaws are used to move closer or further apart relative to each other along the X-axis to clamp or release the fins along the X-axis. The second driving component is driven to connect to the second clamping component. The second driving component is used to drive the second clamping component to reciprocate along the X-axis to transfer the fins after tube insertion from the inserting station to the buffer station. The X-axis intersects the Y-axis.

18. The fin threading production line as described in claim 17, characterized in that, The fin limiting device further includes a side push assembly, which is located on the side of the second clamping assembly near the buffer station. The side push assembly includes a side push drive and a side push member. The side push drive is used to drive the side push member to move along the X-axis direction to push the fin from the buffer station to the unloading station.

19. The fin threading production line as described in claim 5, characterized in that, The fin threading production line also includes a loading and unloading coordination device, which is located near the loading station and / or the unloading station. The loading and unloading coordination device includes a stacking assembly and a drive module. The stacking assembly has multiple unloading stations spaced apart along the Z-axis. The drive module is used to drive the multiple unloading stations to move along the Z-axis. The X-axis, Y-axis, and Z-axis intersect each other.

20. The fin threading production line as described in claim 19, characterized in that, The material stacking assembly has two sets of conveyor groups spaced apart along the X-axis. Each set of conveyor groups includes two transmission chains spaced apart along the Y-axis. Each transmission chain includes two sprockets spaced apart along the Z-axis and a chain sleeved and mounted on the two sprockets. The outer periphery of the chain has multiple spaced material clamping slots. The multiple material clamping slots on opposite sides of the two sets of conveyor groups cooperate to form multiple material unloading stations. The drive module is used to drive the two conveyor groups to rotate in opposite directions, so as to drive the multiple material unloading stations to move up and down along the Z-axis.

21. The fin threading production line as described in claim 20, characterized in that, The stacking assembly is provided in multiple sets, and the drive module is provided in multiple sets. The multiple drive modules are connected to the stacking assembly in a one-to-one drive connection. Each drive module includes a stacking drive component, a drive shaft and multiple angle actuators. The stacking drive component is driven to the drive shaft. The two ends of the drive shaft are respectively driven to the two conveying groups corresponding to the stacking assembly through the angle actuators, so as to drive the two conveying groups corresponding to the stacking assembly to rotate in opposite directions. Alternatively, the stacking assembly may be provided in multiple groups, and the drive module drives and connects multiple groups of the stacking assembly. The drive module includes a stacking drive component, a transmission shaft, and multiple angle actuators. The stacking drive component drives and connects to the transmission shaft. The two conveying groups of each stacking assembly are connected to the transmission shaft through the angle actuators, so that the stacking drive component drives the two conveying groups of the multiple stacking assemblies to rotate in opposite directions.

22. The fin threading production line as described in claim 19, characterized in that, The loading and unloading coordination device further includes a positioning module, which includes a second positioning drive and a second reference component. The second positioning drive and the second reference component are respectively disposed on both sides of the stacking assembly along the Y-axis direction. The second positioning drive is used to drive the fin to move towards the second reference component along the Y-axis direction, so as to position the fin between the second positioning drive and the second reference component.

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