Radiator wave belt fin cutting-off equipment

Abstract

The invention relates to the technical field of metal cutting, in particular to radiator wave belt fin cutting equipment which comprises a rack and a T-shaped connecting piece, an oil cylinder is fixedly connected to the top of the rack, a sliding block is fixedly connected to the output end of the oil cylinder, a sliding groove is fixedly connected to the top of the connecting piece, and a cutter is connected to the bottom end of the connecting piece. A sliding groove is formed in the machine frame, a sliding block is arranged in the sliding groove, the sliding block is matched in the sliding groove in a sliding mode, partition plates are horizontally and fixedly connected to the two sides of the interior of the machine frame, and a driving structure is arranged on each partition plate and used for driving the sliding groove to slide on the sliding block. The cutter at the bottom of the connecting piece horizontally deviates by a certain distance, the contact position of the fin on the cutting edge is changed when the cutter is cut again after deviating, the same position of the cutting edge is prevented from being repeatedly impacted when the cutter is cut every time, and therefore the abrasion rate of the local cutting edge of the cutter is reduced, and the service life is prolonged.

Description

Technical Field

[0001] This invention relates to the field of metal cutting technology, and in particular to a device for cutting corrugated fins of radiators. Background Technology

[0002] As a fundamental component of radiators, fins have a wide range of applications, and different types of fins have different effects on the heat dissipation performance of heat exchangers. There are many types of fins, the most common of which include ordinary straight fins, porous fins, and corrugated fins. Corrugated fins, as a type of corrugated fin, are very suitable for mass production due to their compact structure, light weight, small size, and the ability to be processed by direct roll forming, thus possessing a very broad market prospect.

[0003] In industrial production, thin metal sheets are rolled to form a complete corrugated belt fin, which is then cut according to requirements. Existing methods for cutting corrugated belt fins include... Figure 1 As shown, the cutter cuts the corrugated fins vertically under the action of driving force. However, this method has the following problems in actual production: During continuous production, the position where the fin exerts force on the cutting edge of the cutter remains unchanged. That is, each time the cutter makes a cut, the apex of the fin will exert a reverse force on the cutting edge at the same position, causing the contact point on the cutting edge to be repeatedly impacted. This leads to rapid wear of the cutting edge at the contact point, which not only affects the service life of the cutter, but also affects the quality of the cutter on the fin, resulting in reduced smoothness of the fin cut and more burrs. Summary of the Invention

[0004] The purpose of this invention is to solve the problem of severe local wear on the cutting edge of the tool in the prior art, and to propose a radiator corrugated fin cutting device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Design a radiator corrugated fin cutting device, including a frame and a T-shaped connector. A hydraulic cylinder is fixedly connected to the top of the frame, and a slider is fixedly connected to the output end of the hydraulic cylinder. A sliding groove is fixedly connected to the top of the connector, and a cutting tool is connected to the bottom of the connector. The slider is slidably fitted in the sliding groove. Baffles are horizontally fixed to both sides inside the frame, and the baffles are provided with a driving structure to drive the sliding groove to slide on the slider.

[0007] Preferably, the drive structure includes a rotating shaft and a long rack. One end of the rotating shaft is rotatably mounted on the partition plate, and the other end of the rotating shaft is rotatably connected to the top of the frame. A long gear is fixedly connected to the rotating shaft, and a long rack is fixedly connected to the side wall of the slide groove. The long gear and the long rack are matched.

[0008] Preferably, a first bearing seat is fixedly connected to the middle of the bottom surface of the partition plate, a first internal spline tube is rotatably installed in the first bearing seat, a first spline shaft is slidably fitted in the first internal spline tube, a transmission shaft is fixedly connected to both ends of the first spline shaft, a first gear and a second gear are fixedly connected at intervals on the shaft body of the transmission shaft, and an end face gear is fixedly connected to the bottom end of the rotating shaft, both the first gear and the second gear are engaged with the end face gear.

[0009] Preferably, both drive shafts are provided with a switching structure at their ends for switching the meshing state of the first gear and the second gear with the end face gear. The switching structure includes a short shaft and a second splined shaft. The short shaft is rotatably mounted on a partition plate. A lever is fixedly connected to the top end of the short shaft. A slide tube is horizontally fixedly connected to the bottom end of the short shaft. A slide rod is slidably fitted inside the slide tube. A rotating ring is rotatably mounted at the end of the slide rod. A compression spring is sleeved on the slide rod. A second splined shaft is fixedly connected to the end of the drive shaft. The second splined shaft is rotatably connected inside the rotating ring.

[0010] Preferably, a first permanent magnet is fixed to the side wall of the paddle, and a second permanent magnet is fixed to both ends of the connector, and the first permanent magnet and the second permanent magnet generate a repulsive magnetic force between them.

[0011] Preferably, the partition plate is provided with a power structure for driving the second spline shaft to rotate. The power structure includes a second bearing seat, which is fixed to the bottom surface of the partition plate. A second inner spline tube is rotatably installed inside the second bearing seat. The second inner spline tube is sleeved on the second spline shaft. A one-way bearing is installed on the body of the second inner spline tube, and a driven gear is installed on the outer wall of the one-way bearing.

[0012] Preferably, a connecting rod is vertically inserted through the partition, the connecting rod is slidably engaged with the partition, and a short rack is fixedly connected to the bottom end of the connecting rod, the short rack being matched with the driven gear.

[0013] Preferably, a sliding block is fixed to the top of the connecting rod, and sliding grooves are provided on both sides of the top of the connector, with the sliding block slidably engaged in the sliding grooves.

[0014] Preferably, the upper surface of the partition is provided with a support spring to apply an upward elastic force to the sliding block.

[0015] The radiator corrugated fin cutting device proposed in this invention has the following advantages: During the retraction process, the device drives the slide groove to slide a short distance on the slider through the drive structure, so that the cutter at the bottom of the connector is horizontally offset by a certain distance. After the cutter offsets, the contact position of the fins on the cutting edge changes when the cutter is cut again, so as to prevent the same position of the cutting edge from being repeatedly impacted each time the cutter is cut, thereby reducing the wear rate of the local cutting edge of the cutter and extending its service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the wavy fin cutting process in the prior art.

[0017] Figure 2 This is a schematic diagram of the structure of a radiator corrugated fin cutting device proposed in this invention.

[0018] Figure 3 This is a front view of a radiator corrugated fin cutting device proposed in this invention.

[0019] Figure 4 This invention proposes a radiator corrugated fin cutting device. Figure 3 Sectional view along the AA direction.

[0020] Figure 5 This is a schematic diagram of the tool and frame of a radiator corrugated fin cutting device proposed in this invention.

[0021] Figure 6 This is a schematic diagram of the connection structure between the oil cylinder and the cutting tool in a radiator corrugated fin cutting device proposed in this invention.

[0022] Figure 7 This invention provides a schematic diagram of the internal structure of the frame of a radiator corrugated fin cutting device. Figure 1 .

[0023] Figure 8 This invention provides a schematic diagram of the internal structure of the frame of a radiator corrugated fin cutting device. Figure 2 .

[0024] Figure 9 This invention proposes a radiator corrugated fin cutting device. Figure 8 Enlarged view of section B in the middle.

[0025] Figure 10 This invention proposes a radiator corrugated fin cutting device. Figure 7 Front view of the interior of the middle rack.

[0026] Figure 11 This is a schematic diagram of the first gear, second gear, and end face gear meshing of a radiator corrugated fin cutting device proposed in this invention.

[0027] Figure 12 This invention proposes a radiator corrugated fin cutting device. Figure 11 Enlarged view of point C in the middle.

[0028] Figure 13 This is a schematic diagram showing the connection of the first spline shaft, the drive shaft, and the second spline shaft of a radiator corrugated fin cutting device proposed in this invention.

[0029] Figure 14 This is a schematic diagram of the structure of the driven gear, one-way shaft and second internal spline tube of the radiator wave strip fin cutting device proposed in this invention.

[0030] Figure 15 This is a schematic diagram of the installation structure of the sponge roller and tube fittings of a radiator corrugated fin cutting device proposed in this invention.

[0031] In the diagram: 1. Frame; 2. Hydraulic cylinder; 3. Slider; 4. Slide groove; 5. Connector; 501. Slide groove; 6. Cutting tool; 7. Long rack; 8. Rotating shaft; 9. Long gear; 10. Partition plate; 11. End face gear; 12. First bearing seat; 13. First internal spline tube; 14. First spline shaft; 15. Drive shaft; 16. First gear; 17. Second gear; 18. Second spline shaft; 19. Connecting rod; 20. Sliding block; 2 1. Support spring; 22. Short rack; 23. Driven gear; 24. Second bearing housing; 25. Second internal spline tube; 26. One-way bearing; 27. Rotating ring; 28. Slide rod; 29. ​​Compression spring; 30. Slide tube; 31. Short shaft; 32. Paddle; 33. First permanent magnet; 34. Drive pulley; 35. Belt; 36. Tube fitting; 37. Sponge roller; 38. Driven pulley; 39. Second permanent magnet; 40. Side panel. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0033] Reference Figures 1-6 A radiator corrugated fin cutting device includes a frame 1 and a T-shaped connector 5. A hydraulic cylinder 2 is fixedly connected to the top of the frame 1, and a slider 3 is fixedly connected to the output end of the hydraulic cylinder 2. A sliding groove 4 is fixedly connected to the top of the connector 5, and a cutting tool 6 is connected to the bottom end of the connector 5. The slider 3 is slidably fitted in the sliding groove 4. Partition plates 10 are horizontally fixed to both sides inside the frame 1. The partition plates 10 are provided with a driving structure to drive the sliding groove 4 to slide on the slider 3.

[0034] When cutting the fins, the hydraulic cylinder 2 on the frame 1 drives the slider 3 to move downwards. The slider 3 drives the slide groove 4 to move downwards, which in turn drives the connecting piece 5 to move downwards. The downward movement of the connecting piece 5 causes the bottom cutter 6 to cut the fins. After the cutting is completed, the hydraulic cylinder 2 resets to allow the cutter 6 to return to its original position. During the return process, the drive structure drives the slide groove 4 to slide a short distance on the slider 3, causing the cutter 6 at the bottom of the connecting piece 5 to shift horizontally by a certain distance. When the cutter 6 shifts and cuts again, the contact position of the fin at the cutting edge changes, preventing the same position on the cutting edge from being repeatedly impacted during each cut. This reduces the wear rate of the local cutting edge of the cutter 6 and extends its service life.

[0035] like Figures 5-8 As shown, the drive structure includes a rotating shaft 8 and a long rack 7. One end of the rotating shaft 8 is rotatably mounted on the partition plate 10, and the other end of the rotating shaft 8 is rotatably connected to the top of the frame 1. A long gear 9 is fixedly connected to the rotating shaft 8. The length of the long gear 9 is greater than the maximum vertical displacement distance of the cutter 6. A long rack 7 is fixedly connected to the side wall of the slide 4. The long gear 9 matches the long rack 7.

[0036] When the rotating shaft 8 rotates, it will drive the long gear 9 to rotate. The rotation of the long gear 9 will drive the long rack 7 to move horizontally. When the long rack 7 moves horizontally, it will drive the slide groove 4 to slide on the slider 3. The sliding of the slide groove 4 will drive the connecting piece 5 to move horizontally, so that the connecting piece 5 will drive the bottom cutter 6 to move synchronously.

[0037] like Figures 8-10 and Figure 13 As shown, a first bearing seat 12 is fixedly connected to the middle of the bottom surface of the partition plate 10. A first inner spline tube 13 is rotatably installed inside the first bearing seat 12. A first spline shaft 14 is slidably fitted inside the first inner spline tube 13. A transmission shaft 15 is fixedly connected to both ends of the first spline shaft 14. A first gear 16 and a second gear 17 are fixedly connected at intervals on the shaft body of the transmission shaft 15. An end face gear 11 is fixedly connected to the bottom end of the rotating shaft 8. Both the first gear 16 and the second gear 17 are engaged with the end face gear 11.

[0038] When the drive shaft 15 rotates, it will drive the first gear 16 and the second gear 17 to rotate. Both the first gear 16 and the second gear 17 can mesh with the end face gear 11. When the drive shaft 15 rotates, it will drive the end face gear 11 to rotate through the first gear 16 or the second gear 17, thereby causing the end face gear 11 to drive the rotating shaft 8 to rotate.

[0039] like Figures 8-13As shown, both drive shafts 15 are equipped with switching structures at their ends for switching the meshing state of the first gear 16 and the second gear 17 with the end face gear 11. The switching structure includes a short shaft 31 and a second splined shaft 18. The short shaft 31 is rotatably mounted on the partition plate 10. A paddle 32 is fixedly connected to the top of the short shaft 31. A slide tube 30 is horizontally fixedly connected to the bottom of the short shaft 31. A slide rod 28 is slidably fitted inside the slide tube 30. A rotating ring 27 is rotatably mounted at the end of the slide rod 28. A compression spring 29 is sleeved on the slide rod 28. The second splined shaft 18 is fixedly connected to the end of the drive shaft 15. The second splined shaft 18 is rotatably connected inside the rotating ring 27.

[0040] When the paddle 32 deflects, it drives the slide tube 30 to rotate synchronously through the short shaft 31. The rotation of the slide tube 30 drives the slide rod 28 to rotate. During the rotation of the slide rod 28, it drives the second spline shaft 18 to move horizontally through the rotating ring 27 connected to the end. The horizontal movement of the second spline shaft 18 drives the transmission shaft 15 to move synchronously. The horizontal movement of the transmission shaft 15 drives the first gear 16 and the second gear 17 on the shaft to move synchronously, so as to switch the meshing state of the first gear 16 and the second gear 17 with the end face gear 11.

[0041] like Figures 11-13 As shown, a first permanent magnet 33 is fixed to the side wall of the lever 32, and a second permanent magnet 39 is fixed to both ends of the connector 5. The first permanent magnet 33 and the second permanent magnet 39 generate a repulsive magnetic force between them.

[0042] When the slide 4 slides on the slider 3, it changes the distance between the second permanent magnet 39 and the first permanent magnet 33 at both ends of the connector 5. The magnetic force generated by the second permanent magnet 39 on the first permanent magnet 33 increases as the distance between them decreases. When the distance between the second permanent magnet 39 and the first permanent magnet 33 is the smallest, the magnetic force on the first permanent magnet 33 will be greater than the resistance generated by the compression spring 29 on the rotation of the short shaft 31. At this time, the first permanent magnet 33 will drive the paddle 32 to deflect under the magnetic drive, thereby providing power for the switching of the meshing state between the first gear 16 and the second gear 17 and the end face gear 11.

[0043] like Figures 4-9 and Figure 14As shown, the partition 10 is equipped with a power structure to drive the second spline shaft 18 to rotate. The power structure includes a second bearing seat 24, which is fixed to the bottom surface of the partition 10. A second inner spline tube 25 is rotatably installed inside the second bearing seat 24. The second inner spline tube 25 is sleeved on the second spline shaft 18. A one-way bearing 26 is installed on the tube body of the second inner spline tube 25. A driven gear 23 is installed on the outer wall of the one-way bearing 26. A connecting rod 19 is vertically inserted through the partition 10 and slides with the partition 10. A short rack 22 is fixed to the bottom end of the connecting rod 19 and matches the driven gear 23. A sliding block 20 is fixed to the top end of the connecting rod 19. Sliding grooves 501 are opened on both sides of the top of the connecting member 5, and the sliding block 20 slides in the sliding grooves 501.

[0044] Based on the above description, it is known that when the hydraulic cylinder 2 drives the cutting tool 6 to descend and retract, the connecting piece 5 moves down and up synchronously. During the downward and upward movement of the connecting piece 5, the sliding block 20 within the sliding groove 501 moves up and down synchronously, wherein:

[0045] When the sliding block 20 moves down, the sliding block 20 will drive the connecting rod 19 to move down. The moving of the connecting rod 19 will drive the short rack 22 to move down synchronously. When the short rack 22 moves down, it will drive the driven gear 23 to rotate. Due to the presence of the one-way bearing 26, the rotation of the driven gear 23 during the downward movement of the short rack 22 will not drive the second inner spline tube 25 to rotate. At this time, the driven gear 23 will idle.

[0046] When the sliding block 20 moves upward, it will drive the connecting rod 19 to move upward. When the short rack 22 moves upward, it will drive the driven gear 23 to rotate in the opposite direction. Due to the presence of the one-way bearing 26, the driven gear 23 is essentially fixedly connected to the second inner spline tube 25 during the upward movement of the short rack 22. At this time, the driven gear 23 will drive the second inner spline tube 25 to rotate. The rotation of the second inner spline tube 25 will drive the second spline shaft 18 to rotate. The rotation of the second spline shaft 18 will drive the transmission shaft 15 to rotate. The rotation of the transmission shaft 15 will drive the first gear 16 and the second gear 17 to rotate simultaneously, thereby driving the end face gear 11 to rotate.

[0047] like Figure 9 As shown, a support spring 21 is provided on the upper surface of the partition 10 to apply an upward elastic force to the sliding block 20. The presence of the support spring 21 can provide an upward elastic force to the sliding block 20, thereby reducing the load when the hydraulic cylinder 2 drives the tool 6 to return.

[0048] like Figure 11 and Figure 15As shown, side panels 40 are fixed to both sides of the frame 1. A pipe fitting 36 is rotatably mounted on the side panel 40. A sponge roller 37 is fixed to the pipe body of the pipe fitting 36. A driven pulley 38 is fixed to the middle of the pipe fitting 36. A driving pulley 34 is fixed to the first inner spline tube 13. The driven pulley 38 and the driving pulley 34 are driven by a belt 35.

[0049] Therefore, when the drive shaft 15 rotates, it will drive the first inner spline tube 13 to rotate through the first spline shaft 14. The drive pulley 34 on the tube body of the first inner spline tube 13 will rotate synchronously. The rotation of the drive pulley 34 will drive the driven pulley 38 to rotate through the belt 35. The rotation of the driven pulley 38 will drive the tube 36 to rotate. The tube 36 will drive the sponge roller 37 to rotate. The sponge roller 37 will abut against the surface of the tool 6. During the rotation of the sponge roller 37, it will clean the impurities and chips attached to the surface of the tool 6.

[0050] In addition, the fitting 36 has a slot. When cutting fluid is introduced into the fitting 36, the cutting fluid will flow into the sponge roller 37 through the slot so that the cutting fluid can be applied to the surface of the tool 6 during the rotation of the sponge roller 37.

[0051] Working principle:

[0052] When this equipment performs the shearing operation on the fins, it includes two processes: the downward cut and the retraction cut, as detailed below:

[0053] Cutting process: The hydraulic cylinder 2 on the frame 1 drives the slider 3 to move down, the slider 3 drives the slide groove 4 to move down, the slide groove 4 drives the connecting piece 5 to move down, and the connecting piece 5 moves down to drive the bottom cutter 6 to cut the fins.

[0054] Return process: After the cutting operation is completed, the hydraulic cylinder 2 drives the connecting piece 5 to move upward through the slider 3. The cutter at the bottom of the connecting piece 5 returns to its original position. During the upward movement of the connecting piece 5, the connecting piece 5 will drive the sliding block 20 to move upward synchronously through the sliding groove 501. The sliding block 20 will drive the connecting rod 19 to move upward. When the short rack 22 moves upward, it will drive the driven gear 23 to rotate in the opposite direction. Due to the presence of the one-way bearing 26, during the upward movement of the short rack 22, the driven gear 23 is essentially fixedly connected to the second internal spline tube 25. At this time, the driven gear 23 will drive the second internal spline tube 25 to rotate. The rotation of the second internal spline tube 25 will drive the second spline shaft 18 to rotate. The rotation of the second spline shaft 18 will drive the transmission shaft 15 to rotate. The rotation of the transmission shaft 15 will drive the first gear 16 and the second gear 17 to rotate simultaneously, thereby driving the end face gear 11 to rotate.

[0055] The rotation of the end gear 11 drives the long gear 9 to rotate via the shaft 8. The rotation of the long gear 9 drives the long rack 7 to move horizontally. When the long rack 7 moves horizontally, it causes the slide groove 4 to slide on the slider 3. The sliding of the slide groove 4 causes the connecting piece 5 to move horizontally, so that the connecting piece 5 drives the bottom cutter 6 to move synchronously. After the cutter 6 moves, when it cuts again, the contact position of the fins at the cutting edge changes, so as to prevent the cutting edge from being repeatedly impacted at the same position each time it cuts, thereby reducing the wear rate of the local cutting edge of the cutter 6 and extending its service life.

[0056] Furthermore, during the rotation of the drive shaft 15, the first internal spline tube 13 will also rotate via the first spline shaft 14. The drive pulley 34 on the tube body of the first internal spline tube 13 will rotate synchronously. The rotation of the drive pulley 34 will drive the driven pulley 38 to rotate via the belt 35. The rotation of the driven pulley 38 will drive the tube 36 to rotate, and the tube 36 will drive the sponge roller 37 to rotate. The sponge roller 37 abuts against the surface of the tool 6. During the rotation of the sponge roller 37, it will clean the impurities and chips attached to the surface of the tool 6. The tube 36 has a slot. When cutting fluid is introduced into the tube 36, the cutting fluid will flow into the sponge roller 37 through the slot, so that the cutting fluid is coated on the surface of the tool 6 during the rotation of the sponge roller 37, reducing the frictional resistance encountered by the tool 6 during the cutting and retraction process, and reducing the wear rate of the tool 6.

[0057] Based on the above description, it is known that the connector 5 will move horizontally. As the connector 5 moves horizontally, the second permanent magnet 39 on one end of the connector 5 will move closer to the first permanent magnet 33 on the upper surface of the partition 10. As the distance between the second permanent magnet 39 and the first permanent magnet 33 decreases, the magnetic force generated by the second permanent magnet 39 on the first permanent magnet 33 increases as the distance between them decreases.

[0058] Furthermore, the minimum distance between the second permanent magnet 39 and the first permanent magnet 33 occurs during the cutting process of the cutter 6. As described above, during the cutting process of the cutter 6, both the first gear 16 and the second gear 17 are stationary with the end face gear 11. When the minimum distance between the second permanent magnet 39 and the first permanent magnet 33 is reached, the paddle 32 deflects under the action of magnetic force. The deflection of the paddle 32 drives the second spline shaft 18 to slide in the second inner spline tube 25. The sliding of the second spline shaft 18 drives the transmission shaft 15 to move axially. Through the axial movement of the transmission shaft 15, the stationary first gear 16 and the second gear 17 are translated, thereby changing the meshing state between the first gear 16 and the second gear 17 and the end face gear 11.

[0059] With the rotation direction of the transmission shaft 15 unchanged, the change in the meshing state between the first gear 16 and the second gear 17 and the end face gear 11 will change the rotation direction of the end face gear 11, thereby changing the direction of movement of the long gear 9 driving the long rack 7, so that the long rack 7 can make linear reciprocating motion under the drive of the long gear 9, thereby ensuring that the tool 6 can be horizontally displaced each time it returns to its original position with a fixed length, so as to reduce the wear rate of the local cutting edge of the tool 6 and extend its service life.

[0060] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A radiator corrugated fin cutting device, characterized in that, The machine includes a frame (1) and a T-shaped connector (5). A hydraulic cylinder (2) is fixedly connected to the top of the frame (1). A slider (3) is fixedly connected to the output end of the hydraulic cylinder (2). A sliding groove (4) is fixedly connected to the top of the connector (5). A cutting tool (6) is connected to the bottom of the connector (5). The slider (3) is slidably fitted in the sliding groove (4). A partition (10) is horizontally fixed to both sides inside the frame (1). A driving structure is provided on the partition (10) to drive the sliding groove (4) to slide on the slider (3).

2. The radiator corrugated fin cutting device according to claim 1, characterized in that, The drive structure includes a rotating shaft (8) and a long rack (7). One end of the rotating shaft (8) is rotatably mounted on the partition plate (10), and the other end of the rotating shaft (8) is rotatably connected to the top of the frame (1). A long gear (9) is fixedly connected to the rotating shaft (8), and a long rack (7) is fixedly connected to the side wall of the slide groove (4). The long gear (9) matches the long rack (7).

3. The radiator corrugated fin cutting device according to claim 2, characterized in that, A first bearing seat (12) is fixedly connected to the middle of the bottom surface of the partition plate (10). A first inner spline tube (13) is rotatably installed inside the first bearing seat (12). A first spline shaft (14) is slidably fitted inside the first inner spline tube (13). A transmission shaft (15) is fixedly connected to both ends of the first spline shaft (14). A first gear (16) and a second gear (17) are fixedly connected at intervals on the shaft body of the transmission shaft (15). An end face gear (11) is fixedly connected to the bottom end of the rotating shaft (8). Both the first gear (16) and the second gear (17) are engaged with the end face gear (11).

4. The radiator corrugated fin cutting device according to claim 3, characterized in that, Both drive shafts (15) are provided with switching structures at their ends for switching the meshing state of the first gear (16) and the second gear (17) with the end face gear (11). The switching structure includes a short shaft (31) and a second spline shaft (18). The short shaft (31) is rotatably mounted on the partition plate (10). A paddle (32) is fixedly connected to the top of the short shaft (31). A slide tube (30) is horizontally fixedly connected to the bottom of the short shaft (31). A slide rod (28) is slidably fitted inside the slide tube (30). A rotating ring (27) is rotatably mounted at the end of the slide rod (28). A compression spring (29) is sleeved on the slide rod (28). A second spline shaft (18) is fixedly connected to the end of the drive shaft (15). The second spline shaft (18) is rotatably connected inside the rotating ring (27).

5. The radiator corrugated fin cutting device according to claim 4, characterized in that, A first permanent magnet (33) is fixed to the side wall of the paddle (32), and a second permanent magnet (39) is fixed to both ends of the connector (5). The first permanent magnet (33) and the second permanent magnet (39) generate a repulsive magnetic force.

6. The radiator corrugated fin cutting device according to claim 5, characterized in that, The partition (10) is provided with a power structure for driving the second spline shaft (18) to rotate. The power structure includes a second bearing seat (24), which is fixed to the bottom surface of the partition (10). A second inner spline tube (25) is rotatably installed inside the second bearing seat (24). The second inner spline tube (25) is sleeved on the second spline shaft (18). A one-way bearing (26) is installed on the tube body of the second inner spline tube (25). A driven gear (23) is installed on the outer wall of the one-way bearing (26).

7. The radiator corrugated fin cutting device according to claim 6, characterized in that, A connecting rod (19) runs vertically through the partition (10), and the connecting rod (19) slides with the partition (10). A short rack (22) is fixed to the bottom end of the connecting rod (19), and the short rack (22) matches the driven gear (23).

8. The radiator corrugated fin cutting device according to claim 7, characterized in that, The top end of the connecting rod (19) is fixed with a sliding block (20), and the top two sides of the connector (5) are provided with sliding grooves (501), and the sliding block (20) is slidably engaged in the sliding grooves (501).

9. The radiator corrugated fin cutting device according to claim 8, characterized in that, The upper surface of the partition (10) is provided with a support spring (21) to apply an upward elastic force to the sliding block (20).

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