Finned heat exchanger rough machining production line

Abstract

The application provides a finned heat exchanger rough machining production line, and belongs to the technical field of machinery. Mainly comprising a fin inserting table, a rotating structure, a flaring structure, a bending structure and a support; the fin inserting table, the rotating structure and the support are sequentially installed on a production line, the rotating structure is rotationally connected between the fin inserting table and the support, one end of the rotating structure is rotationally connected with the fin inserting table, the support is installed on the ground, and the other end of the rotating structure is rotationally connected with the support; a first track is installed at the upper end of the support and is arranged along the length direction of the support, a first transfer structure is arranged on the first track, a flaring structure is installed below the end of the first track, a second track is installed at the upper end of the support, a second transfer structure is arranged on the second track, and a bending structure is installed below the end of the second track; the rotating structure, the first transfer structure, the flaring structure and the second transfer structure are electrically connected with a controller.

Description

Technical Field

[0001] This invention relates to the field of mechanical technology, and in particular to a rough machining production line for finned heat exchangers. Background Technology

[0002] Air conditioner heat exchangers are typically finned heat exchangers. The process involves stacking multiple fins and manually inserting long, U-shaped heat exchange tubes into the holes on the fins. The pre-processed product is then manually moved to a flared structure where the ends of the long U-shaped heat exchange tubes are flared. This increased diameter prevents the tubes from falling off, creating a stable structure. Without changing the size of the outdoor unit, compared to a straight-plate heat exchanger, the bent finned heat exchanger has a larger contact area with the air conditioner's interior, accelerating heat dissipation. Therefore, bending is necessary. This requires manually moving the flared product to a bending structure for bending, shaping it into the required form. This involves handling a large quantity and weight of processed parts. Traditional production lines rely heavily on manual labor, resulting in high labor intensity and low efficiency. Therefore, it is necessary to establish production lines that reduce manual handling, lower labor intensity, and improve production efficiency. Summary of the Invention

[0003] In view of the above, it is necessary to provide a rough machining production line for finned heat exchangers, which reduces manual handling, lowers labor intensity, and improves production efficiency.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A rough machining production line for finned heat exchangers mainly includes a fin insertion platform, a rotating structure, a flaring structure, a bending structure, and a support. The fin insertion platform, rotating structure, and support are sequentially installed on a production line. A conveyor belt is installed along the length of the fin insertion platform. The rotating structure is rotatably connected between the fin insertion platform and the support, with one end rotatably connected to the fin insertion platform. The support is installed on the ground, and the other end of the rotating structure is rotatably connected to the support. A first track is installed at the upper end of the support, extending along its length. A first transfer structure is installed on the first track, and a flaring structure is installed below the end of the first track. The first transfer structure transfers the finished product from the previous process to the flaring structure. A second track is installed at the upper end of the support, with a second transfer structure installed on it. A bending structure is installed below the end of the second track, and the second transfer structure transfers the finished product from the previous process to the bending structure. The rotating structure, first transfer structure, flaring structure, and second transfer structure are all electrically connected to a controller.

[0006] The rotating structure mainly includes a first motor, a driving gear, a first conveying assembly, a second conveying assembly, a partition, and a driven gear. The first motor is installed below the end of the fin insertion platform, with its first rotating shaft facing the rotating structure. A driving gear is mounted on the first rotating shaft, and the axis of the driving gear coincides with the axis of the first rotating shaft. A support frame is installed above the end of the fin insertion platform, with a first rotating hole and a second rotating hole. The axes of the first and second rotating holes coincide. Rotating shafts are installed at both ends of the partition along its length, and the two rotating shafts are rotatably connected to the first and second rotating holes, respectively. A first conveying assembly is installed on the front of the partition, and a second conveying assembly is installed on the back of the partition. The first and second conveying assemblies are directly opposite the partition and are connected to it via side connecting rods. The distance between the second conveying component and the partition is greater than the thickness of the heat exchanger; driven gears are installed at the front ends of the first and second conveying components, the axis of the driven gears coincides with the axis of rotation of the partition, the diameter of the driven gears is greater than the length of the heat exchanger, and the driven gears mesh with the driving gears; limit plates are installed on both the front and back of the partition, the length direction of the two limit plates is parallel to the length direction of the partition, the two limit plates are not located on the same side of the partition, and the two limit plates are not in contact with the first and second conveying components; baffles are installed on both the front and back of the partition, the baffles are perpendicular to the limit plates, the baffles are located at the end of the partition away from the fin insertion stage, the baffles are not in contact with the first and second conveying components, and a first sensor is installed on the baffle, the sensing port of the first sensor faces the workpiece side; the first sensor, the first conveying component, the second conveying component, and the first motor are all electrically connected to the controller.

[0007] Furthermore, the fin insertion platform is equipped with an insertion structure for assisting fin installation. The insertion structure mainly includes a placement plate, a rotating rod, a support rod, and two columns. The rotating rod is installed on the lower end face of the placement plate. The two columns are respectively installed at both ends of the insertion platform in the width direction. The two ends of the rotating rod are rotatably connected to the columns. The support rod is installed on the insertion platform above the conveyor belt. The support rod is parallel to the rotating rod. The support rod is located at the beginning of the conveyor belt, and the rotating rod is located at the end of the conveyor belt. The height of the support rod is lower than that of the rotating rod. The placement plate leans against the support rod. The upper end face of the placement plate is provided with a first backing plate and a second backing plate. The first backing plate is installed on the side of the placement plate near the support rod, and the second backing plate is installed on the side adjacent to the first backing plate. The second backing plate has a locking slot, and the length direction of the locking slot is parallel to the length direction of the second backing plate.

[0008] Furthermore, a handle is installed at the upper end of the first backrest.

[0009] Furthermore, a first electric push rod is installed on both sides of the fin insertion platform. The first push rod of the first electric push rod is perpendicular to the length direction of the conveyor belt, and a first push plate is installed at the end of the first push rod.

[0010] Furthermore, when the rotating structure rotates to the vertical direction, the first transfer structure is located directly above the rotating structure, and a second sensor is installed on the first transfer structure. The second sensor, the first transfer structure, and the controller are electrically connected.

[0011] Furthermore, the flared structure mainly includes a worktable, a turntable, and a limiting frame. The worktable is installed at the end of the rotating structure and below the first track. A turntable is installed on the upper surface of the worktable, and a second motor is installed below the worktable. A shaft hole is provided on the worktable, and the second shaft of the second motor passes vertically through the shaft hole and connects to the lower surface of the turntable. The axis of the second shaft coincides with the axis of the turntable. Limiting frames are installed around the upper surface of the turntable. The upper surface of the limiting frame is open, and the opening size of the limiting frame is larger than the cross-sectional size of the heat exchanger. A frame hole is provided on the side of each limiting frame, and a second electric push rod is installed next to each limiting frame. The second push rod of the second electric push rod passes through the frame hole and enters the limiting frame. A second... Two push plates are used, with the second push plate movably abutting against the side of the heat exchange tube. Each of the limiting frames has an insertion port on its outer side, referring to the side facing away from the turntable. The length direction of the insertion port is vertical. A third electric push rod is installed on the upper surface of the worktable, and a third push plate is installed at the end of the third push rod of the third electric push rod, with the third push plate positioned directly opposite the insertion port. A third motor is installed on the end of the worktable away from the rotating structure, with the third shaft of the third motor pointing vertically downwards and an expansion joint installed at the end of the third shaft. When the turntable rotates, one of the limiting frames is located below the first track, and another limiting frame is located directly below the expansion joint. A third sensor is installed on the worktable, and the third sensor, the second electric push rod, the third electric push rod, and the third motor are all electrically connected to the controller.

[0012] Furthermore, the second track is perpendicular to the length direction of the first track, with one of the limiting frames located below the second track, and a ramp conveyor belt installed below the second track.

[0013] Furthermore, the bending structure mainly includes a bending table, the upper surface of which has a groove, the length direction of which is parallel to the length direction of the bending table. A first lifting block is installed at one end of the groove, and a second lifting block is installed at the other end of the groove. The upper surfaces of the first and second lifting blocks are parallel to the horizontal plane. A fourth motor is installed below the first lifting block, and the fourth shaft of the fourth motor is vertically upward and connected to the lower surface of the first lifting block. The side of the first lifting block near the second lifting block is a first inclined surface, which slopes towards the first lifting block. A fifth motor is installed below the second lifting block. The fifth rotating shaft is vertically upward and connected to the lower end face of the second lifting block. The side of the second lifting block closest to the first lifting block is a second inclined surface, which is parallel to the first inclined surface. The first and second lifting blocks do not contact each other. A bending cylinder and a pressure plate are installed above the bending table. The length direction of the bending cylinder is parallel to the width direction of the bending table. The bending cylinder is installed above the second lifting block via support plates on both sides of the worktable. The bending cylinder is installed on the side closest to the first lifting block. The minimum distance between the lower end of the inclined surface of the first lifting block and the bending cylinder is equal to the width of the fin. A pressure plate is installed at the lower end of the bending cylinder, and the pressure plate is parallel to the upper end face of the second lifting block.

[0014] Furthermore, the side of the first lifting block closest to the second lifting block is formed by connecting a first inclined surface and a vertical surface. The first inclined surface is inclined to the side of the first lifting block, and the vertical surface is located below the first inclined surface. The distance between the vertical surface and the bending cylinder is equal to the width of the fin.

[0015] Furthermore, the pressure plate is provided with scale lines, the direction of which is parallel to the length direction of the bending table.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This invention features a fin insertion platform with an insertion structure. Multiple fins are placed on this structure for easy insertion of heat exchange tubes. The finished product is transferred from the insertion structure to a conveyor belt on the insertion platform. The conveyor belt then transports the product to a rotating structure, rotating it from a horizontal position to a vertical position with the open end of the heat exchange tube facing upwards. A first transfer structure on a support grips the heat exchange tube, and the entire product is transferred along a first track to a flaring structure. After flaring, the flared product is transferred via a second transfer structure to a bending structure. The product's position is manually adjusted before bending. This entire structure reduces manual handling of the product, lowers labor intensity, and improves production efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a specific embodiment provided by the present invention.

[0019] Figure 2 This is a front view of the overall structure of a specific embodiment provided by the present invention.

[0020] Figure 3 This is a right view of the overall structure of a specific embodiment provided by the present invention.

[0021] Figure 4 These are schematic diagrams of the overall structure from different orientations in specific embodiments of the present invention.

[0022] Figure 5 This is a schematic diagram of the rotating structure in the vertical direction according to a specific embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the workpiece being removed from the rotating structure by the first transfer structure in a specific embodiment of the present invention.

[0024] Figure 7 This is a schematic diagram of the bending structure in a specific embodiment provided by the present invention.

[0025] Figure 8 This is a preliminary diagram of the bending process of the processed product in a specific embodiment provided by the present invention.

[0026] Figure 9 This is a further schematic diagram of the bending process of the processed product in a specific embodiment provided by the present invention.

[0027] Figure 10 This is a finished product image showing the bending process of a processed article in a specific embodiment of the present invention.

[0028] Figure 11 This is a control principle diagram in a specific embodiment provided by the present invention.

[0029] Among them, 1 is the fin insertion platform, 2 is the support rod, 3 is the first backing plate, 4 is the placement plate, 5 is the second backing plate, 6 is the bayonet, 7 is the column, 8 is the rotating rod, 9 is the processed product, 10 is the first electric push rod, 11 is the first push rod, 12 is the first push plate, 13 is the support frame, 14 is the driven gear, 15 is the bracket, 16 is the first track, 17 is the first transfer structure, 18 is the second track, 19 is the second transfer structure, 20 is the third motor, 21 is the limiting frame, 22 is the turntable, and 23 is the second electric... 24 is the push rod, 25 is the second conveyor assembly, 26 is the first conveyor assembly, 27 is the connecting rod, 28 is the inclined conveyor belt, 29 is the pressure plate, 30 is the support plate, 31 is the bending cylinder, 32 is the first lifting platform, 33 is the worktable, 34 is the fourth motor, 35 is the fifth motor, 36 is the drive gear, 37 is the first motor, 38 is the expansion joint, 39 is the handle, 40 is the rotating shaft, 41 is the partition plate, 42 is the baffle, 43 is the second motor, 44 is the insertion port, and 45 is the third electric push rod.

[0030] The following detailed description, in conjunction with the accompanying drawings, will further illustrate the present invention. 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 some embodiments of the present invention, and not all embodiments. The accompanying drawings are for illustrative purposes only and represent schematic diagrams, not actual pictures, and should not be construed as limiting this patent. In order to better illustrate the specific implementation of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. It is understandable for those skilled in the art that some well-known structures, components, and their descriptions may be omitted in the drawings. The terms "upper," "lower," "left," and "right" are used to illustrate the embodiments and do not represent the location of the actual product. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] A specific embodiment, as shown in the figure, represents a preferred embodiment of the present invention. A rough machining production line for finned heat exchangers mainly includes a fin insertion platform 1, a rotating structure, a flaring structure, a bending structure, and a support 15. The fin insertion platform 1, the rotating structure, and the support 15 are sequentially installed on a production line. A conveyor belt is installed along the length of the platform of the fin insertion platform 1. The rotating structure is rotatably connected between the fin insertion platform 1 and the support 15. One end of the rotating structure is rotatably connected to the fin insertion platform 1. The support 15 is installed on the ground, and the other end of the rotating structure is rotatably connected to the support 15. A first track 16 is installed on the upper end of the support 15. The first track 16 runs along the support 15. The first track 16 is configured along its length and has a first transfer structure 17. A flared structure is installed below the end of the first track 16. The first transfer structure 17 transfers the processed product 9 from the previous process to the flared structure. A second track 18 is installed at the upper end of the bracket 15. A second transfer structure 19 is installed on the second track 18. A bending structure is installed below the end of the second track 18. The second transfer structure 19 transfers the processed product 9 from the previous process to the bending structure. The rotating structure, the first transfer structure 17, the flared structure, and the second transfer structure 19 are all electrically connected to the controller.

[0034] The rotating structure mainly includes a first motor 36, a driving gear 35, a first conveying assembly 25, a second conveying assembly 24, a partition 40, and a driven gear 14. The first motor 36 is installed below the end of the fin insertion platform 1, with its first rotating shaft facing the rotating structure. The driving gear 35 is mounted on the first rotating shaft, and the axis of the driving gear 35 coincides with the axis of the first rotating shaft. A support frame 13 is installed above the end of the fin insertion platform 1, with a first rotating hole on the support frame 13 and a second rotating hole on the bracket 15. The axes of the first and second rotating holes coincide. Rotating shafts 39 are installed at both ends of the partition 40 along its length. The two rotating shafts 39 are rotatably connected within the first and second rotating holes, respectively. A first conveying assembly 25 is installed on the front of the partition 40, and a second conveying assembly 24 is installed on the back of the partition 40. The first and second conveying assemblies 25 and 24 are directly opposite the partition 40 and are connected to it via side connecting rods 26. The distance between component 24 and partition 40 is greater than the thickness of the heat exchanger; driven gears 14 are installed at the front ends of the first conveying component 25 and the second conveying component 24, the axis of the driven gear 14 coincides with the axis of the rotation shaft 39 of the partition 40, the diameter of the driven gear 14 is greater than the length of the heat exchanger, the driven gear 14 meshes with the driving gear 35, and limiting plates 41 are installed on both the front and back of the partition 40, the length direction of the two limiting plates 41 is parallel to the length direction of the partition 40, and the two limiting plates 41 are not located on the same side of the partition 40. The limiting plate 41 is not attached to either the first conveying assembly 25 or the second conveying assembly 24. Baffles 42 are installed on both the front and back of the partition 40. The baffles 42 are perpendicular to the limiting plate 41 and are located on the end of the partition 40 away from the fin insertion stage 1. The baffles 42 are not attached to either the first conveying assembly 25 or the second conveying assembly 24. A first sensor is installed on the baffles 42. The sensing port of the first sensor faces the workpiece 9. The first sensor, the first conveying assembly 25, the second conveying assembly 24, and the first motor 36 are all electrically connected to the controller.

[0035] In practical use, at the beginning of production, when the rotating structure is in a horizontal position, the upper surface of the first conveyor component 25 located below is flush with the upper surface of the conveyor belt of the fin insertion table 1. After multiple fins are inserted into the fin insertion table 1, they are conveyed to the first conveyor component 25 located below the rotating structure via the conveyor belt on the fin insertion table. The first conveyor component 25, the second conveyor component 24, and the partition 40 are connected by a side connecting rod 26, facilitating the entry of the workpiece 9 into the rotating structure from both ends without obstruction. Both the first conveyor component 25 and the second conveyor component 24 adopt a conveyor belt structure. Under the conveying of the first conveyor component 25, the workpiece 9 is continuously conveyed forward. When the workpiece 9 is conveyed by the first conveyor component 25 to the position of the baffle 42, the baffle 42 limits its movement, preventing the workpiece 9 from continuing to move forward and thus preventing it from falling from the front end of the rotating structure. Furthermore, a first sensor is installed on the baffle 42. When the first sensor detects that the workpiece 9 has reached a certain position within the rotating structure, it transmits a signal to the controller. The controller then controls the first motor 36 to rotate. The first motor 36 is a stepper motor, causing the first conveying assembly 25, the second conveying assembly 24, and the partition 40, which are connected together, to rotate 90 degrees each time following the driven gear 14. That is, the first conveying assembly 25 and the second conveying assembly 24 rotate from a horizontal state to a vertical state or from a vertical state to a horizontal state. To prevent the workpiece 9, located between the first conveying assembly 25 and the partition 40, from falling off either side of the rotating structure during rotation, a limiting plate 41 is installed on the partition 40. The limiting plate 41 does not contact the conveyor and therefore does not affect the conveying of the conveying assembly. Both the first conveying component 25 and the second conveying component 24 are electrically connected to the controller. Each time the controller controls the first motor 36 to rotate, the rotating structure can be set to be in the vertical direction, and neither the first conveying component 25 nor the second conveying component 24 will be activated, reducing the friction between the first conveying component 25 and the second conveying component 24 and the workpiece 9, and saving resources. Because when the rotating structure rotates to the vertical direction, the limiting plate 41 between the first conveying component 25 and the partition 40 is located below, providing support. Since the two limiting plates 41 on the partition 40 are not located on the same side of the partition 40, when the rotating structure rotates, it can be ensured that the limiting plates 41 are always located below, making it convenient to use the limiting plates 41 to support the workpiece 9 located within the rotating structure. Similarly, when the rotating structure continues to rotate, and the workpiece 9 is located between the second conveying component 24 and the partition 40, the state of the workpiece 9 remains the same.The rotating structure rotates the workpiece 9 from a horizontal to a vertical position, so that the tube openings of the heat exchanger are facing upwards. This facilitates the first transfer structure 17 to transfer the workpiece 9 into the flaring structure, where the tube openings of the heat exchanger are flared. When the tube openings are flared, they are larger than the tube holes on the fins, preventing the fins inserted into the heat exchanger from falling off and acting as a limit, thus making the structure of the workpiece 9 more stable. Then, the second transfer structure 19 transfers the flared workpiece 9 to the bending structure, where it is processed into the shape required for the production of the heat exchanger.

[0036] The initial state of the heat exchanger is formed by inserting multiple fins and multiple heat exchange tubes. Each fin has multiple tube holes arranged in a neat manner. Multiple heat exchange tubes are evenly inserted into the tube holes of the fins. During the insertion process, the long U-shaped heat exchange tubes used are in the same direction, that is, the opening direction of multiple heat exchange tubes is the same. To facilitate insertion, the fin insertion platform 1 is further equipped with an insertion structure for assisting fin installation. The insertion structure mainly includes a placement plate 4, a rotating rod 8, a support rod 2, and two columns 7. The rotating rod 8 is installed on the lower end face of the placement plate 4. The two columns 7 are respectively installed at both ends of the insertion platform in the width direction. The two ends of the rotating rod 8 are rotatably connected to the columns 7. The support rod 2 is installed on the insertion platform above the conveyor belt. The support rod 2 is parallel to the rotating rod 8. The support rod 2 is located at the initial conveying end of the conveyor belt, and the rotating rod 8 is located at the end conveying end of the conveyor belt. The height of the support rod 2 is lower than that of the rotating rod 8. The placement plate 4 leans against the support rod 2. The upper end face of the placement plate 4 is provided with a first backing plate 3 and a second backing plate 5. The first backing plate 3 is installed on the side of the placement plate 4 closest to the support rod 2, and the second backing plate 5 is installed on the side adjacent to the first backing plate 3. A latch 6 is provided on the second backing plate 5, and the length direction of the latch 6 is parallel to the length direction of the second backing plate 5. During use, the placement plate 4 is rotatably connected to the column 7 via the rotating rod 8. Under the action of gravity, one end of the placement plate 4 rests against the support rod 2, causing the placement plate 4 to be in an inclined state. A first support plate 3 is provided on the placement plate 4. When the fins are placed on the placement plate 4, multiple fins will rest against the first support plate 3 under the action of gravity, causing the positions of the tube holes on the multiple fins to coincide, which facilitates the simultaneous insertion of heat exchange tubes onto multiple fins. Because each fin has annular protrusions on both sides of the tube hole, when multiple heat exchange tubes are inserted into multiple fins, there are gaps between the fins for ventilation, which facilitates heat dissipation. To prevent the fins from falling off the rear end of the placement plate 4, a second support plate 5 is provided. The fins can rest against the second support plate 5. The operator stands on the side of the fin insertion platform 1, which is the front end of the placement plate 4, and continuously stacks multiple fins on the placement plate 4. After a sufficient number of fins have been placed, the operator holds the fins with one hand and simultaneously inserts the heat exchange tubes onto the multiple fins with the other hand. Furthermore, the first placement plate 4 is provided with thickness scale lines. Since each fin has the same thickness, when multiple fins are stacked on the placement plate 4, the thickness scale lines can be observed to determine whether the number of fins placed is sufficient. Because the open end of the heat exchange tube needs to extend beyond the fins, a retaining slot 6 is further provided on the second support plate 5. After the heat exchange tube is inserted onto the multiple fins, the open end of the heat exchange tube passes through the retaining slot 6 of the second support plate 5.When the completed workpiece 9 needs to be transferred to the conveyor belt on the fin insertion table 1, because the support rod 2 is located at the beginning of the conveyor belt, the upward rotation of the placement plate 4 causes the lower end of the workpiece 9 on the placement plate 4 to first contact the conveyor belt. As the conveyor belt continues to move forward, the workpiece 9 detaches from the placement plate 4, then moves onto the conveyor belt, and is then conveyed to the rotating structure. This replaces the operator's operation of directly carrying the workpiece from the placement plate 4 to the conveyor belt, saving more effort. Furthermore, a handle 38 is installed on the upper end of the first support plate 3 to facilitate upward rotation of the placement plate 4.

[0037] Because the workpiece 9 needs to be conveyed into the rotating structure, a limiting plate 41 is provided on the partition 40 of the rotating structure. The limiting plate 41 may obstruct the workpiece 9 from entering the rotating structure. Therefore, to ensure the workpiece 9 can smoothly enter the rotating structure, first electric push rods 10 are further installed on both sides of the fin insertion platform 1. The first push rod 11 of the first electric push rod 10 is perpendicular to the length direction of the conveyor belt, and a first push plate 12 is installed at the end of the first push rod 11. The push of the first push plate 12 limits the position of the workpiece 9, allowing it to smoothly enter the rotating structure. The two first electric push rods 10 can be controlled by the same switch and can be manually started. Alternatively, a distance sensor can be installed at the front end of the first electric push rod 10. The distance sensor is electrically connected to the controller. When the workpiece 9 is conveyed to the appropriate position by the conveyor belt, the distance sensor transmits a signal to the controller, which then controls the first electric push rod 10 to start, using the first push plate 12 to limit the workpiece 9.

[0038] Furthermore, when the rotating structure rotates to the vertical direction, the first transfer structure 17 is located directly above the rotating structure. A second sensor is installed on the first transfer structure 17, and the second sensor, the first transfer structure 17, and the controller are electrically connected. When the rotating structure rotates to the vertical direction, the open ends of the heat exchange tubes on the workpiece 9 face upwards. The first transfer structure 17 is directly above the rotating structure. After the second sensor on the first transfer structure 17 senses the workpiece 9 on the rotating structure, it transmits a signal to the controller. The controller controls the first transfer structure 17 to start and grasp the workpiece 9 on the rotating structure. Because there are many heat exchange tubes, and the open ends of the heat exchange tubes face upwards, it is necessary to grasp the open ends of all the heat exchange tubes simultaneously to prevent the heat exchange tubes from falling off the workpiece 9 and to transfer the entire workpiece 9 to the flared structure. Furthermore, the grasping end of the first transfer structure 17 adopts a suction cup type, with each suction cup facing the open end of a heat exchange tube. Furthermore, the gripping end of the first transfer structure 17 is a gripper type, with each gripper clamping the open end of a heat exchange tube. Both suction cup and gripper types are commonly used existing technologies and will not be described in detail here. The first transfer structure 17 employs existing lifting and hoisting structure technology, which will also not be described in detail here.

[0039] Further, the flared structure mainly includes a worktable 32, a turntable 22, and a limiting frame 21. The worktable 32 is installed at the end of the rotating structure and below the first track 16. The turntable 22 is installed on the upper surface of the worktable 32, and a second motor 43 is installed below the worktable 32. A shaft hole is opened on the worktable 32, and the second shaft of the second motor 43 passes vertically through the shaft hole and connects to the lower surface of the turntable 22. The axis of the second shaft coincides with the axis of the turntable 22. Limiting frames 21 are installed around the upper surface of the turntable 22. The upper surface of the limiting frame 21 is open, and the opening size of the limiting frame 21 is larger than the cross-sectional size of the heat exchanger. A frame hole is opened on the side of each limiting frame 21, and a second electric push rod 23 is installed next to each limiting frame 21. The second push rod of the second electric push rod 23 passes through the frame hole and enters the limiting frame 21. The end of the second push rod is installed with... A second push plate is provided, which movably abuts against the side of the heat exchange tube; each of the limiting frames 21 has an insertion port 44 on its outer side, which refers to the side facing away from the turntable 22. The length direction of the insertion port 44 is vertical. A third electric push rod 45 is installed on the upper end of the worktable 32. A third push plate is installed at the end of the third push rod of the third electric push rod 45, and the position of the third push plate is directly opposite the insertion port 44; a third motor 20 is installed on the end of the worktable 32 away from the rotating structure. The third shaft of the third motor 20 is vertically downward, and the end of the third shaft is equipped with a flared opening 37. When the turntable 22 rotates, one of the limiting frames 21 is located below the first track 16, and the other limiting frame 21 is located directly below the flared opening 37. A third sensor is installed on the worktable 32. The third sensor, the second electric push rod 23, the third electric push rod 45, and the third motor 20 are all electrically connected to the controller. The second motor 43 is a stepper motor, which can be set to rotate 90 degrees each time, so that after each rotation, one of the four limit frames 21 on the turntable 22 of the worktable 32 is kept below the running line of the first transfer structure 17, and the other limit frame 21 is located below the reaming head.When the first transfer structure 17 transfers the workpiece 9 to the top of the workbench 32, it places the workpiece 9 in the limiting frame 21 directly below. After the third sensor on the workbench 32 senses this, it transmits a signal to the controller. The controller first controls the second motor 43 to rotate, rotating the limiting frame 21 containing the workpiece 9 to a position directly below the flaring head 37. The controller then controls the second electric push rod 23 to start, pushing the workpiece 9 from the side via the second push plate, limiting the workpiece 9 in the limiting frame 21 below the flaring head 37, so that the workpiece 9 rests against one side of the limiting frame 21. The controller then controls the third electric push rod 45 to start, pushing the workpiece 9 from the insertion port 44 of the limiting frame 21 via the third push plate, so that the back of the workpiece 9 rests against the limiting frame 21. The limiting of the workpiece 9 by the second electric push rod 23 and the third electric push rod 45 facilitates the alignment of the flaring head 37 of the flaring structure with the opening of each heat exchange tube, making flaring easier. The controller can be set according to the time of each process. From the first rotation of the second motor 43 to the pushing of the second electric push rod 23 and the third electric push rod 45, and the flaring of the third motor 20, the working time can be set by the controller. Finally, the controller controls the second motor 43 to rotate for the second time, so that the limit frame 21 under the flaring head 37 rotates to the other side, that is, the side away from the first track 16 and the side close to the second track 18.

[0040] Furthermore, the second track 18 is perpendicular to the length direction of the first track 16, with a limiting frame 21 located below the second track 18. A ramp conveyor belt 27 is installed below the second track 18. After the flaring is completed, the turntable 22 rotates, and the flared processed product 9 is located below the second track 18. The controller controls the second transfer structure 19 to remove the flared processed product 9 from the limiting frame 21 and place it on the ramp conveyor belt 27. The ramp conveyor belt 27 acts as a support, allowing the processed product 9 to be slowly transferred from a high position to a low position. The ramp conveyor belt 27 transfers the processed product 9 to the bending structure, reducing the manual removal and handling of the processed product 9 and improving efficiency.

[0041] Furthermore, the bending structure mainly includes a bending table, the upper surface of which has a groove, the length direction of which is parallel to the length direction of the bending table. A first lifting block is installed at one end of the groove, and a second lifting block is installed at the other end of the groove. The upper surfaces of the first and second lifting blocks are parallel to the horizontal plane. A fourth motor 33 is installed below the first lifting block, and the fourth shaft of the fourth motor 33 is vertically upward. The fourth shaft is connected to the lower surface of the first lifting block. The side of the first lifting block near the second lifting block is a first inclined surface, which slopes towards the first lifting block. A fifth motor 34 is installed below the second lifting block, and the fifth shaft of the fifth motor 34 is vertically upward. Above, the fifth rotating shaft is connected to the lower end face of the second lifting block. The side of the second lifting block closest to the first lifting block is a second inclined surface, which is parallel to the first inclined surface. The first lifting block and the second lifting block do not contact each other. A bending cylinder 30 and a pressure plate 28 are installed above the bending table. The length direction of the bending cylinder 30 is parallel to the width direction of the bending table. The bending cylinder 30 is installed above the second lifting block via support plates 29 on both sides of the worktable 32. The bending cylinder 30 is installed on the side closest to the first lifting block. The minimum distance between the lower end of the inclined surface of the first lifting block and the bending cylinder 30 is equal to the width of the fin. A pressure plate 28 is installed at the lower end of the bending cylinder 30, and the pressure plate 28 is parallel to the upper end face of the second lifting block. A second inclined surface is provided on the second lifting block, which is parallel to the first inclined surface. When the first lifting block rises, the second inclined surface can reduce the volume of the second lifting block, reduce the obstruction to the first lifting block, and allow the first lifting block to rise smoothly. The operator places the workpiece 9 flat on the second lifting block, with one end of the workpiece 9 positioned below the pressure plate 28 and the bending cylinder 30, and the other end on the first lifting platform 31. The fifth motor 34 is activated to raise the second lifting block, causing the upper end of the workpiece 9 to abut against the lower surface of the pressure plate 28, thus clamping the workpiece 9. The fourth motor 33 is then activated to raise the first lifting block, providing an upward force to one end of the workpiece 9. First, the upper surface of the first lifting block causes one end of the workpiece 9 to tilt upwards, and then the first inclined surface further tilts it upwards. Since the minimum distance between the lower end of the first inclined surface of the first lifting block and the bending cylinder 30 is the width of the fins, the lower end of the first inclined surface of the first lifting block and the bending cylinder 30 perform a final bending step on the workpiece 9, resulting in the desired shape of the heat exchanger. Furthermore, the lower end of the first inclined surface has a smooth transition, reducing damage to the fins of the workpiece 9.

[0042] Furthermore, the side of the first lifting block closest to the second lifting block is formed by connecting a first inclined surface and a vertical surface. The first inclined surface is inclined to the side of the first lifting block, and the vertical surface is located below the first inclined surface. The distance between the vertical surface and the bending cylinder 30 is equal to the width of the fin. By setting the vertical surface, when the first lifting block rises, the vertical surface can increase the contact area between the first lifting block and the workpiece 9, which facilitates the bending and shaping of the workpiece 9.

[0043] Furthermore, the pressure plate 28 is provided with scale lines, the direction of which is parallel to the length direction of the bending table. Since the length to which the workpiece 9 needs to be bent is fixed, the workpiece 9 can be placed using the scale lines, facilitating the bending process to produce products of the same specification.

[0044] The above description is a detailed description of the preferred embodiments of the present invention. However, the embodiments are not intended to limit the scope of the patent application of the present invention. All equivalent changes or modifications made under the technical spirit of the present invention should fall within the patent scope covered by the present invention.

Claims

1. A production line for the rough machining of finned heat exchangers, characterized in that, Mainly include fin plug-in station, rotating structure, flared structure, bending structure, support, the fin plug-in station, rotating structure, support are installed in a production line in proper order, the table surface of fin plug-in station is installed with conveyor belt along the length direction, the rotating structure is rotatably connected between fin plug-in station and support, one end of the rotating structure is rotatably connected with fin plug-in station, the support is installed on the ground, the other end of the rotating structure is rotatably connected on the support, the upper end of the support is installed with first track, the first track is arranged along the length direction of support, the first track is equipped with first transfer structure, the lower of the end of first track is installed with flared structure, the first transfer structure transfers the finished product of previous process to flared structure, the upper end of the support is installed with second track, the second track is equipped with second transfer structure, the lower of the end of second track is installed with bending structure, the second transfer structure transfers the finished product of previous process to bending structure, the rotating structure, first transfer structure, flared structure, second transfer structure are electrically connected with controller, The rotating structure mainly comprises a first motor, a driving gear, a first conveying assembly, a second conveying assembly, a partition plate, a driven gear; the first motor is installed below the end of the fin insertion table, the first rotating shaft of the first motor faces the rotating structure, the driving gear is installed on the first rotating shaft, the axis of the driving gear coincides with the axis of the first rotating shaft, a support frame is installed above the end of the fin insertion table, a first rotating hole is formed in the support frame, a second rotating hole is formed in the support frame, the axes of the first rotating hole and the second rotating hole coincide, rotating shafts are installed at the two ends of the length direction of the partition plate, the two rotating shafts are respectively rotatably connected in the first rotating hole and the second rotating hole, the first conveying assembly is installed on the front surface of the partition plate, the second conveying assembly is installed on the back surface of the partition plate, the first conveying assembly, the second conveying assembly and the partition plate are opposite in position, the first conveying assembly, the second conveying assembly and the partition plate are connected through the side connecting rod, the distance between the first conveying assembly, the second conveying assembly and the partition plate is greater than the thickness of the heat exchanger; the front end of the first conveying assembly and the second conveying assembly is provided with the driven gear, the axis of the driven gear coincides with the axis of the rotating shaft of the partition plate, the diameter of the driven gear is greater than the length of the heat exchanger, the driven gear is meshed and connected with the driving gear, the front surface and the back surface of the partition plate are both provided with the limiting plate, the length direction of the two limiting plates is parallel to the length direction of the partition plate, the two limiting plates are not located on the same side of the partition plate, the two limiting plates are not attached to the first conveying assembly and the second conveying assembly, the front surface and the back surface of the partition plate are both provided with the baffle, the baffle is perpendicular to the limiting plate, the baffle is located at the end of the partition plate away from the fin insertion table, the baffle is not attached to the first conveying assembly and the second conveying assembly, the first sensor is installed on the baffle, the sensing port of the first sensor faces the side of the processed product, the first sensor, the first conveying assembly, the second conveying assembly and the first motor are electrically connected with the controller.

2. A line for the rough machining of finned heat exchangers as claimed in claim 1, characterized in that, The fin insertion table is provided with an insertion structure for assisting the fin installation, the insertion structure mainly comprises a placing plate, a rotating rod, a support rod and two columns, the rotating rod is installed on the lower end surface of the placing plate, the two columns are respectively installed at the two ends in the width direction of the insertion table, the two ends of the rotating rod are rotatably connected to the columns, the support rod is installed on the insertion table above the conveying belt, the support rod is parallel to the rotating rod, the support rod is located at the initial conveying end of the conveying belt, the rotating rod is located at the final conveying end of the conveying belt, the height position of the support rod is lower than that of the rotating rod, the placing plate is inclined on the support rod, the upper end surface of the placing plate is provided with a first leaning plate and a second leaning plate, the first leaning plate is installed on the side of the placing plate close to the support rod, the second leaning plate is installed on the side adjacent to the first leaning plate, a bayonet is formed in the second leaning plate, the length direction of the bayonet is parallel to the length direction of the second leaning plate.

3. A line for the rough machining of finned heat exchangers as claimed in claim 2, characterized in that, The upper end of the first leaning plate is provided with a lifting handle.

4. A line for the rough machining of finned heat exchangers as claimed in claim 2, characterized in that, The first electric push rod is installed on both sides of the fin plug-in station, the first push rod is perpendicular to the length direction of the conveying belt, and the end of the first push rod is provided with a first push plate.

5. A line for the rough machining of finned heat exchangers as claimed in claim 1, characterized in that, When the rotating structure rotates to the vertical direction, the first transfer structure is located directly above the rotating structure, a second sensor is installed on the first transfer structure, and the second sensor, the first transfer structure and the controller are electrically connected.

6. A line for the rough machining of finned heat exchangers as claimed in claim 1, characterized in that, The flaring structure mainly comprises a workbench, a rotating disc and a limiting frame, the workbench is installed at the tail end of the rotating structure, the workbench is installed below the first track, the upper end surface of the workbench is provided with the rotating disc, a second motor is installed below the workbench, an axle hole is formed in the workbench, the second rotating shaft of the second motor vertically penetrates through the axle hole and is connected with the lower end surface of the rotating disc, the axis of the second rotating shaft coincides with the axis of the rotating disc, the limiting frame is installed around the upper end surface of the rotating disc, the upper end surface of the limiting frame is open, the opening size of the limiting frame is greater than the cross-sectional size of the heat exchanger, a frame hole is formed in the side surface of each limiting frame, a second electric push rod is installed beside each limiting frame, the second push rod of the second electric push rod penetrates through the frame hole and enters the limiting frame, a second push plate is installed at the end of the second push rod, and the second push plate movably abuts against the side surface of the heat exchange pipe; a socket is formed in the outer surface of each limiting frame, the outer surface refers to the surface away from the rotating disc, the length direction of the socket is in the vertical direction, a third electric push rod is installed on the upper end surface of the workbench, a third push plate is installed at the end of the third push rod of the third electric push rod, and the third push plate is located opposite to the socket; a third motor is installed at the end of the workbench away from the rotating structure, the third rotating shaft of the third motor vertically faces downward, a flaring head is installed at the end of the third rotating shaft, when the rotating disc rotates, one limiting frame is located below the first track, and one limiting frame is located directly below the flaring head, a third sensor is installed on the workbench, and the third sensor, the second electric push rod, the third electric push rod and the third motor are electrically connected with the controller.

7. A line for the rough machining of finned heat exchangers as claimed in claim 6, characterized in that, The length direction of the second track is perpendicular to the length direction of the first track, one limiting frame is located below the second track, and an inclined conveying belt is installed below the second track.

8. A line for the rough machining of finned heat exchangers as claimed in claim 1, characterized in that, The bending structure mainly comprises a bending table, a groove is formed in the upper end surface of the bending table, the length direction of the groove is parallel to the length direction of the bending table, a first lifting block is installed at one end of the groove, a second lifting block is installed at the other end of the groove, the upper end surfaces of the first lifting block and the second lifting block are parallel to the horizontal plane, a fourth motor is installed below the first lifting block, the fourth rotating shaft of the fourth motor is vertically upward, the fourth rotating shaft is connected with the lower end surface of the first lifting block, one side of the first lifting block close to the second lifting block is a first inclined surface, the first inclined surface is inclined to one side of the first lifting block, a fifth motor is installed below the second lifting block, the fifth rotating shaft of the fifth motor is vertically upward, the fifth rotating shaft is connected with the lower end surface of the second lifting block, one side of the second lifting block close to the first lifting block is a second inclined surface, the second inclined surface is parallel to the first inclined surface, and the first lifting block is not in contact with the second lifting block; a bending cylinder and a pressing plate are installed above the bending table, the length direction of the bending cylinder is parallel to the width direction of the bending table, the bending cylinder is installed above the second lifting block through the support plates on both sides of the workbench, the bending cylinder is installed on the side close to the first lifting block, the minimum distance between the lower end of the inclined surface of the first lifting block and the bending cylinder is equal to the width of the fin, and the pressing plate is installed at the lower end of the bending cylinder and is parallel to the upper end surface of the second lifting block.

9. A line for the rough machining of finned heat exchangers as claimed in claim 8, characterized in that, One side of the first lifting block close to the second lifting block is connected by a first inclined surface and a vertical surface, the first inclined surface is inclined to one side of the first lifting block, the vertical surface is below the first inclined surface, and the distance between the vertical surface and the bending cylinder is equal to the width of the fin.

10. A line for the rough machining of finned heat exchangers as claimed in claim 8, characterized in that, A scale line is arranged on the pressing plate, and the direction of the scale line is parallel to the length direction of the bending table.

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