A tray conveying device for heat exchanger small bend insertion

Abstract

The utility model discloses a tray conveying device for heat exchanger small elbow insertion, including the conveying line body for making the fixture along the positive direction of first direction's delivery and the push mechanism for pushing the fixture relative to the positive direction sliding of conveying line body along the first direction, the conveying speed of straight line conveying part of push mechanism is faster than the conveying speed of conveying line body, and its dial head part includes dial rod and dial rod rotation subassembly, and dial rod rotation subassembly drives dial rod to swing around the first direction, dial rod rotates from the avoidance position to the working position, and straight line conveying part drives dial head part and moves along the first direction, and dial rod promotes the fixture to remove. The utility model adds push mechanism, and through dial head part's dial rod rotation to the avoidance position, guarantees the fixture normal delivery on conveying line body, through dial rod rotation to the working position, and straight line conveying part drives dial head part and moves along the first direction, and dial rod promotes the fixture to speed up and removes on conveying line body, and more quickly delivers the fixture to the processing station.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning production equipment technology, and in particular to a tray transport device for inserting small elbows into heat exchangers. Background Technology

[0002] Evaporators and condensers are the core heat exchange components in air conditioning units that realize the cooling / heating cycle. Both are among the most numerous, complexly manufactured, and densely welded assembly modules. In the residential air conditioning industry, evaporators and condensers generally adopt a compact tube-fin heat exchanger structure, whose basic components include: stamped finned fins, U-shaped copper tubes (long U-shaped tubes), U-shaped copper bends (elbows), and welded rings. The mainstream automated production lines for this type of heat exchanger typically include three key processes: 1. U-shaped copper tube insertion process: Insert the bent U-shaped copper tubes one by one into the stacked fin assembly to form the fin assembly; 2. Tube expansion process: The open end of the U-shaped copper tube is expanded to make the outer diameter of the open end of the copper tube larger than the diameter of the fin mounting hole; 3. U-shaped copper bend insertion and welding process: First, dry and dehumidify the inside of the U-shaped copper tube, then insert the U-shaped copper bend into the open end of the corresponding U-shaped copper tube and fit it with a welding ring. After welding, connect all the U-shaped copper tubes in series to form a single flow channel to complete the heat exchanger assembly.

[0003] In the automated execution of the above three major processes, in order to simultaneously meet the requirements of radial force application after tube expansion machine alignment and end alignment accuracy during U-shaped copper tube insertion welding, existing production lines typically clamp the fin assembly vertically on a special fixture for circulation. Vertical clamping can not only avoid deformation of the fin assembly under pressure, but also facilitate machine vision or sensors to complete position identification and centering of the open end of the U-shaped copper tube.

[0004] To improve production line cycle time, existing automated production lines for household air conditioner heat exchangers arrange stations such as U-shaped copper tube insertion, tube expansion, drying, tube bending and insertion, and welding sequentially along the conveyor line. Stations such as U-shaped copper tube insertion, tube expansion, and tube bending and insertion often employ a dual-station or even multi-station parallel layout, using differential / double-speed chain lines to transport specialized fixtures and improve cycle time. However, when existing differential / double-speed chain lines transport materials across stations, interference occurs: the specialized fixtures, after clamping the fin assemblies, are quite tall, making it impossible to move them by lifting them. Therefore, a corresponding number of specialized fixtures must be sequentially transported to each station for stopping and clamping, and then sequentially transported away after processing. Simultaneously, the relatively limited conveying speed of differential / double-speed chain lines increases the cross-station transport time, significantly increasing the proportion of transport time in the total process time, becoming a bottleneck restricting the improvement of the overall line cycle time. If the conveyor cycle cannot match the processing cycle, it will also cause the high-level workstations to be idle and waiting, which will weaken the efficiency gains that the multi-workstation layout should have originally.

[0005] Therefore, the industry urgently needs a fin assembly transfer solution that can shorten cross-station transport time and better release dual-station / multi-station capacity to meet the demand for efficient and automated production of household air conditioners. Utility Model Content

[0006] This invention provides a tray transport device for inserting small elbows into heat exchangers, in order to solve the above-mentioned technical problems.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows: A tray conveying device for inserting a small elbow into a heat exchanger includes a conveyor line for conveying a fixture in a forward direction along a first direction and a pushing mechanism for pushing the fixture to slide relative to the conveyor line in a forward direction along the first direction. The pushing mechanism includes a linear conveying component and a deflector component. The conveying speed of the linear conveying component is faster than the conveying speed of the conveyor line. The deflector component includes a lever and a lever rotation assembly. The lever rotation assembly drives the lever to swing around the first direction. The lever rotates from a clearance position to a working position, and the linear conveying component drives the deflector component to move along the first direction. The lever pushes the fixture to move.

[0008] Preferably, the end of the lever is provided with a locking connector, and the fixture is provided with a locking element. When the lever is rotated to the working position, the locking connector engages with the locking element, thereby driving the locking element to move along the first direction. When the lever is rotated to the clearance position, the locking connector disengages from the locking element.

[0009] Preferably, the snap-fit ​​connector includes: a first snap-fit ​​plate, a snap-fit ​​connecting plate, and a second snap-fit ​​plate. The first snap-fit ​​plate is fixed on the lever and is not parallel to the first direction. The second snap-fit ​​plate is opposite to the first snap-fit ​​plate and spaced apart. The snap-fit ​​connecting plate is fixedly connected to the first snap-fit ​​plate and the second snap-fit ​​plate. The first snap-fit ​​plate, the snap-fit ​​connecting plate, and the second snap-fit ​​plate form a snap-fit ​​groove facing the fixture. The snap-fit ​​component includes a third snap-fit ​​plate, which is vertically arranged and fixed on the fixture. When the lever is rotated to the working position, the third snap-fit ​​plate enters the snap-fit ​​groove.

[0010] Preferably, the lever rotation assembly includes: a lever rotation driver, a lever rotation mounting base, and a lever rotation shaft. The end of the lever away from the snap-fit ​​connector is fixed to the lever rotation shaft. The lever rotation shaft is rotatably connected to the lever rotation mounting base. The lever rotation shaft is connected to the lever rotation driver surface, so that the lever rotation shaft is slidably disposed relative to the lever rotation driver along the rotation axis and the lever rotation driver drives the lever rotation shaft to rotate.

[0011] Preferably, the snap-fit ​​element is located in the region of the fixture near its end facing the first direction.

[0012] Preferably, the dialing head component is provided with at least two sets, and the at least two sets of dialing head components are spaced apart on the linear conveying component along the first direction.

[0013] Preferably, the linear conveying component adopts a gear and rack linear module, a lead screw and nut linear module, a linear electric cylinder linear module, a cylinder linear module, a linear motor linear module, or a synchronous belt linear module.

[0014] Preferably, the linear conveying component adopts a gear and rack linear module. The linear conveying component includes: a conveying slide plate, a gear and rack assembly, a drive motor, and a conveying guide assembly. The drive motor is located on the conveying slide plate and drives the gears of the gear and rack assembly to rotate. The gears of the gear and rack assembly mesh with the rack to make the conveying slide plate reciprocate along a first direction. The conveying guide assembly guides the conveying slide plate.

[0015] Preferably, the fixture further includes a guide bar assembly, which includes two guide bars arranged opposite each other, forming a guide channel along a first direction between the two guide bars, through which the upper end of the fin assembly clamped on the fixture passes.

[0016] Preferably, the conveyor line is provided with a blocking positioning component and a lifting mechanism. The blocking positioning component raises the blocking fixture, and the lifting mechanism raises the fixture.

[0017] Beneficial effects: The tray conveying device for inserting small elbows in heat exchangers disclosed in this application, by adding a pushing mechanism, ensures that the fixture is normally conveyed on the conveyor line by rotating the lever of the dialing head component to the avoidance position. When the lever of the dialing head component is rotated to the working position, the linear conveying component drives the dialing head component to move along the first direction, and the lever pushes the fixture to move on the conveyor line, thereby speeding up the conveying speed of the fixture and conveying the fixture to the processing station more quickly. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a tray transport device for inserting a small elbow of a heat exchanger, as disclosed in this utility model. Figure 2 This is a front view of a tray transport device for inserting a small elbow into a heat exchanger, as disclosed in this utility model. Figure 3 This is a schematic diagram of the structure of a jig for a tray transport device for inserting small elbows in a heat exchanger, as disclosed in this utility model. Figure 4This is a schematic diagram of the pushing mechanism of a tray conveying device for inserting small elbows in a heat exchanger, as disclosed in this utility model. Figure 5 This is a schematic diagram of the structure of the dial component of a tray conveying device for inserting small elbows in a heat exchanger, as disclosed in this utility model. Figure 6 This is a schematic diagram of a lifting fixture mounted on a processing frame for a pallet conveying device for inserting small elbows into heat exchangers, disclosed in this utility model, which includes a blocking and positioning component and a lifting mechanism.

[0020] In the diagram: 1. Conveyor line; 11. Blocking and positioning assembly; 12. Lifting mechanism; 2. Linear conveyor component; 21. Conveyor slide plate; 22. Gear and rack assembly; 23. Drive motor; 24. Conveyor guide assembly; 25. Mounting base plate; 26. Felt gear; 3. Toggle head component; 31. Toggle lever; 311. First locking plate; 312. Locking connection plate; 313. Second locking plate; 32. Toggle lever rotation assembly; 321. Toggle lever rotation driver; 322. Toggle lever rotation mounting base; 323. Toggle lever rotation shaft; 4. Guide bar; 5. Processing frame; 6. Fixture; 61. Third locking plate. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] A tray conveying device for inserting small elbows into heat exchangers, combined with Figures 1-6As shown, the device includes a conveyor line 1 for conveying the fixture 6 in a forward direction along a first direction and a pushing mechanism for pushing the fixture 6 to slide relative to the conveyor line 1 in a forward direction along the first direction. The first direction is the direction in which the fixture 6 is conveyed between processing stations, and the forward direction is the direction in which the fixture 6 is conveyed from the previous station to the next station. The pushing mechanism includes a linear conveying component 2 and a dialing component 3. The conveying speed of the linear conveying component 2 is faster than the conveying speed of the conveyor line 1. The dialing component 3 includes a lever 31 and a lever rotation assembly 32. The lever rotation assembly 32 drives the lever 31 to swing around the first direction. The lever 31 rotates from the avoidance position to the working position, and the linear conveying component 2 drives the dialing component 3 to move along the first direction. The lever 31 pushes the fixture 6 to move. This application adds a pushing mechanism. By rotating the lever 31 of the toggle head component 3 to the avoidance position, the fixture 6 can be normally conveyed on the conveyor line 1. By rotating the lever 31 of the toggle head component 3 to the working position, the linear conveying component 2 drives the toggle head component 3 to move along the first direction, and the lever 31 pushes the fixture 6 to move on the conveyor line 1, thereby accelerating the conveying speed of the fixture 6 and conveying it to the processing station more quickly. Before reaching the blocking position, the servo system has a deceleration and slow-stop action, which starts 70mm away from the blocking position. After slow dragging, there is torque feedback to confirm that it has been delivered to the designated position.

[0023] Preferably, the end of the lever 31 is provided with a locking connector, and the fixture 6 is provided with a locking element. When the lever 31 is rotated to the working position, the locking connector engages with the locking element, causing the locking element to move along the first direction. When the lever 31 is rotated to the clearance position, the locking connector disengages from the locking element. Through the rotation of the lever 31 and the engagement of the locking connector and the locking element, the automatic connection and disengagement of the lever head component 3 and the fixture 6 can be achieved.

[0024] Preferably, the snap-fit ​​connector includes: a first snap-fit ​​plate 311, a snap-fit ​​connecting plate 312, and a second snap-fit ​​plate 313. The first snap-fit ​​plate 311 is fixed on the lever 31 and is not parallel to the first direction. The second snap-fit ​​plate 313 is opposite to the first snap-fit ​​plate 311 and spaced apart. The snap-fit ​​connecting plate 312 is fixedly connected to the first snap-fit ​​plate 311 and the second snap-fit ​​plate 313. The first snap-fit ​​plate 311, the snap-fit ​​connecting plate 312, and the second snap-fit ​​plate 313 form a snap-fit ​​groove facing the fixture 6. The snap-fit ​​component includes a third snap-fit ​​plate 61, which is vertically arranged and fixed on the fixture 6. When the lever 31 is rotated to the working position, the third snap-fit ​​plate 61 enters the snap-fit ​​groove, so that the first snap-fit ​​plate 311 or the second snap-fit ​​plate 313 can push the third snap-fit ​​plate 61, thereby moving the fixture 6. Furthermore, this structure reduces the precision requirements for aligning the snap-fit ​​connector with the snap-fit ​​component, and makes it simpler and more reliable for the third snap-fit ​​plate 61 to enter and exit the snap-fit ​​slot.

[0025] Specifically, the lever 31 is plate-shaped, and the first snap-fit ​​plate 311 is integrally formed with the lever 31. One end of the snap-fit ​​connecting plate 312 is welded and fixed to the first snap-fit ​​plate 311, and the other end is fixed to the upper end of the second snap-fit ​​plate 313. The snap-fit ​​connecting plate 312 and the second snap-fit ​​plate 313 are integrally formed. The lower ends of the first snap-fit ​​plate 311 and the second snap-fit ​​plate 313 are machined with bevels, and the top end of the third snap-fit ​​plate 61 is pointed to facilitate the insertion of the third snap-fit ​​plate 61 between the first snap-fit ​​plate 311 and the second snap-fit ​​plate 313.

[0026] Preferably, the lever rotation assembly 32 includes: a lever rotation driver 321, a lever rotation mounting base 322, and a lever rotation shaft 323. The end of the lever 31 away from the locking connector is fixed to the lever rotation shaft 323. The lever rotation shaft 323 is rotatably connected to the lever rotation mounting base 322. The lever rotation shaft 323 is surface-connected to the lever rotation driver 321, allowing the lever rotation shaft 323 to slide relative to the lever rotation driver 321 along the rotation axis, and the lever rotation driver 321 drives the lever rotation shaft 323 to rotate. Since there may be a deviation between the third locking plate 61 and the first locking plate 311 and the second locking plate 313, the sliding of the lever rotation shaft 323 relative to the lever rotation driver 321 along the rotation axis can accommodate the existing deviation, ensuring that the third locking plate 61 reliably enters between the first locking plate 311 and the second locking plate 313.

[0027] Specifically, the lever rotation mounting base 322 is fixed to the conveyor slide plate 21 by screws, and the lever rotation driver 321 is a rotary cylinder fixed to the lever rotation mounting base 322 by screws. The end of the lever rotation shaft 323 facing the lever rotation driver 321 is provided with a tooth and a groove. The output end of the lever rotation driver 321 is fixed to a connecting sleeve by screws. The connecting sleeve is also provided with a tooth and a groove. The tooth of the connecting sleeve is inserted into the groove of the lever rotation shaft 323, and the tooth and the groove are left with a gap along the axial direction without abutting. The tooth of the lever rotation shaft 323 is inserted into the groove of the connecting sleeve, and the tooth and the groove are left with a gap along the axial direction without abutting, ensuring that the lever rotation shaft 323 can rotate with the connecting sleeve while ensuring axial movement.

[0028] Preferably, the snap-fit ​​component is located in the region of the fixture 6 near its end facing the first direction, so that the fixture 6 can be driven by the dialing component 3 for conveying as soon as it enters the working range of the dialing component 3, thereby further shortening the conveying time.

[0029] Preferably, the dialing head component 3 is provided in at least two sets, and the at least two sets of dialing head components 3 are arranged at intervals along the first direction on the linear conveying component 2, thereby driving multiple fixtures 6 to move together and further improving the transmission efficiency. In this embodiment, two sets of dialing head components 3 are provided.

[0030] Preferably, the linear conveying component 2 adopts a gear and rack linear module, a lead screw and nut linear module, a linear electric cylinder linear module, a cylinder linear module, a linear motor linear module, or a synchronous belt linear module.

[0031] In this embodiment, the linear conveying component 2 adopts a gear and rack linear module. The linear conveying component 2 includes: a conveying slide plate 21, a gear and rack assembly 22, a drive motor 23, and a conveying guide assembly 24. The drive motor 23 is mounted on the conveying slide plate 21 and drives the gears of the gear and rack assembly 22 to rotate. The gears of the gear and rack assembly 22 mesh with the rack, causing the conveying slide plate 21 to reciprocate along a first direction. The conveying guide assembly 24 guides the conveying slide plate 21, thereby ensuring that the linear conveying component 2 achieves a relatively fast conveying speed.

[0032] Specifically, it also includes a processing frame 5 for mounting the processing equipment. In this embodiment, two processing frames 5 are spaced apart along the conveyor line 1. The mounting base 25 of the linear conveyor component 2 is fixed to the side of the two processing frames 5, and the rack of the gear and rack assembly 22 is fixed to the mounting base 25. The guide rail of the conveyor guide assembly 24 is fixed to the mounting base 25, and the slider of the conveyor guide assembly 24 is fixed to the conveyor slide plate 21. The drive motor 23 is fixed to the conveyor slide plate 21 by screws, and the output shaft of the drive motor 23 is coaxially fixed to the gear of the gear and rack assembly 22. A felt gear 26 is also added to the conveyor slide plate 21. The felt gear 26 is rotatably connected to the conveyor slide plate 21, and a channel is opened on the felt gear 26. Oil is circulated into the channel through a pipe for lubrication.

[0033] Specifically, the guide rails of the conveying guide assembly 24 are provided with stop rubber at both ends, which, by blocking the conveying slide plate 21, limit the movement of the conveying slide plate 21 on the mounting base plate 25 to two extreme positions.

[0034] Preferably, the fixture also includes a guide bar assembly, which includes two guide bars 4 arranged opposite to each other, forming a guide channel along a first direction between the two guide bars 4. The upper end of the fin assembly clamped on the fixture 6 passes through the guide channel, and the guide channel guides the fin assembly to prevent the fin assembly from tipping over.

[0035] Preferably, the conveyor line 1 is equipped with a blocking and positioning component 11 and a lifting mechanism 12. The blocking and positioning component 11 raises the blocking fixture 6, and the lifting mechanism 12 raises the fixture 6. The conveyor line 1 adopts a double-speed chain conveyor commonly used in production lines. The blocking and positioning component 11 uses a commonly used blocking cylinder to block the fixture 6. The lifting mechanism 12 uses a cylinder and guide posts and guide sleeves to lift the support plate. The support plate is equipped with positioning posts and buffers to lift the fixture 6. This is prior art and will not be described in detail here.

[0036] The working principle of the device in this application is as follows: Two fixtures 6 are transported along the conveyor line 1; when both fixtures 6 move to the front of the pushing mechanism, the lever rotation assembly 32 of the two lever components 3 drives the lever 31 to rotate from the vertical clearance position to the horizontal working position, and the third locking plate 61 on the two fixtures 6 is respectively inserted between the corresponding first locking plate 311 and second locking plate 313; if the first locking plate 311 or the second locking plate 313 overlaps or collides with the third locking plate 61 during rotation, the lever rotation shaft 323 rotates relative to the lever rotation driver 321 along the rotation axis. The sliding axis of the moving shaft is used for compensation; the drive motor 23 of the linear conveyor component 2 moves along the rack via gears, thereby driving the two dial head components 3 to move; the two dial head components 3 drive the two fixtures 6 to slide along the conveyor line 1, and the two guide bars 4 prevent the fin assembly from shaking and tipping, so that the two fixtures 6 slide to the corresponding processing frame 5 respectively. The blocking positioning component 11 of the conveyor line 1 blocks the fixtures 6, and the lifting mechanism 12 lifts the fixtures 6. The processing equipment installed on the processing frame 5 assembles the fin assembly on the fixtures 6. After the assembly is completed, the pushing mechanism can continue to convey the two fixtures 6 downwards, freeing up the processing position at the processing frame 5; then, the lever rotation component 32 of the dial head component 3 drives the lever 31 to rotate from the working position to the avoidance position, and the linear conveyor component 2 drives the dial head component 3 back to the starting position to convey the two newly conveyed fixtures 6 to the corresponding processing position for continued assembly.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A tray handling device for heat exchanger small bend insertion, characterized in that, The device includes a conveyor line (1) for conveying the fixture (6) in a forward direction in a first direction and a push-slide mechanism for pushing the fixture (6) to slide in a forward direction relative to the conveyor line (1) in the first direction. The push-slide mechanism includes a linear conveying component (2) and a dialing component (3). The conveying speed of the linear conveying component (2) is faster than the conveying speed of the conveyor line (1). The dialing component (3) includes a lever (31) and a lever rotation assembly (32). The lever rotation assembly (32) drives the lever (31) to swing around the first direction. The lever (31) rotates from the avoidance position to the working position. The linear conveying component (2) drives the dialing component (3) to move in the first direction. The lever (31) pushes the fixture (6) to move.

2. The tray conveying device for inserting a small elbow into a heat exchanger according to claim 1, characterized in that, The lever (31) has a locking connector at its end, and the fixture (6) has a locking member. When the lever (31) is rotated to the working position, the locking connector engages with the locking member, thereby driving the locking member to move along the first direction. When the lever (31) is rotated to the avoidance position, the locking connector disengages from the locking member.

3. A tray handling device for heat exchanger small bend insertion according to claim 2, characterized in that, The snap-fit ​​connector includes: a first snap-fit ​​plate (311), a snap-fit ​​connecting plate (312), and a second snap-fit ​​plate (313). The first snap-fit ​​plate (311) is fixed on the lever (31) and is not parallel to the first direction. The second snap-fit ​​plate (313) is opposite to the first snap-fit ​​plate (311) and spaced apart. The snap-fit ​​connecting plate (312) is fixedly connected to the first snap-fit ​​plate (311) and the second snap-fit ​​plate (313). The first snap-fit ​​plate (311), the snap-fit ​​connecting plate (312), and the second snap-fit ​​plate (313) form a snap-fit ​​groove facing the fixture (6). The snap-fit ​​component includes a third snap-fit ​​plate (61). The third snap-fit ​​plate (61) is vertically arranged and fixed on the fixture (6). The lever (31) is rotated to the working position so that the third snap-fit ​​plate (61) enters the snap-fit ​​groove.

4. A tray handling device for heat exchanger small bend insertion according to claim 3, characterized in that, The lever rotation assembly (32) includes: a lever rotation driver (321), a lever rotation mounting base (322), and a lever rotation shaft (323). The end of the lever (31) away from the snap-fit ​​connector is fixed on the lever rotation shaft (323). The lever rotation shaft (323) is rotatably connected to the lever rotation mounting base (322). The lever rotation shaft (323) is shaped to be connected to the lever rotation driver (321), so that the lever rotation shaft (323) is slidably arranged relative to the lever rotation driver (321) along the rotation axis and the lever rotation driver (321) drives the lever rotation shaft (323) to rotate.

5. A tray handling device for heat exchanger small bend insertion according to claim 2, characterized in that, The snap-fit ​​component is located in the region of the fixture (6) near its end facing the first direction.

6. A tray conveying device for inserting a small elbow into a heat exchanger according to claim 1, characterized in that, The dial component (3) is provided with at least two sets, and the at least two sets of dial components (3) are arranged at intervals along the first direction on the linear conveying component (2).

7. A tray conveying device for inserting a small elbow in a heat exchanger according to any one of claims 1-6, characterized in that, The linear conveying component (2) adopts a gear and rack linear module, a lead screw and nut linear module, a linear electric cylinder linear module, a cylinder linear module, a linear motor linear module, or a synchronous belt linear module.

8. A tray conveying device for inserting a small elbow into a heat exchanger according to claim 7, characterized in that, The linear conveying component (2) adopts a gear and rack linear module. The linear conveying component (2) includes: a conveying slide plate (21), a gear and rack assembly (22), a drive motor (23), and a conveying guide assembly (24). The drive motor (23) is mounted on the conveying slide plate (21) and drives the gear of the gear and rack assembly (22) to rotate. The gear of the gear and rack assembly (22) meshes with the rack to make the conveying slide plate (21) reciprocate along a first direction. The conveying guide assembly (24) guides the conveying slide plate (21).

9. A tray conveying device for inserting a small elbow into a heat exchanger according to claim 1, characterized in that, It also includes a guide bar assembly, which includes two guide bars (4) arranged opposite each other, forming a guide channel along a first direction between the two guide bars (4), and the upper end of the fin assembly clamped on the fixture (6) passes through the guide channel.

10. A tray handling device for heat exchanger small bend insertion according to claim 1, characterized in that, The conveyor line (1) is provided with a blocking positioning component (11) and a lifting mechanism (12). The blocking positioning component (11) raises the blocking fixture (6), and the lifting mechanism (12) raises the fixture (6).

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