Automatic fin forming device for producing plate-fin heat exchanger

Abstract

The application discloses a kind of automatic fin forming device for plate-fin heat exchanger production, belong to crane field, including the middle position of the upper surface of base front and back side is fixedly connected with the board of character type, the upper surface of the board of character type is fixedly connected with two electric push rods, the output end of two electric push rods is penetrated through the board of character type and is fixedly connected with upper die, the middle position of base upper surface is fixedly connected with lower die, one side of the lower die is fixedly connected with two stop blocks.The present application is provided with feeding mechanism, drives the material pushing plate to push the sheet material of discharging frame lowermost layer to move from the inside of first through slot, not only can carry out automatic feeding, effectively avoid the operation of manual feeding, greatly improve the safety of staff when working, while can improve the efficiency of feeding, improve work efficiency.

Description

Technical Field

[0001] This invention relates to the field of fin forming equipment, and more specifically, to an automatic fin forming device for the production of plate-fin heat exchangers. Background Technology

[0002] Finned radiators are one of the most widely used heat exchange devices in gas-liquid heat exchangers. They enhance heat transfer by adding fins to ordinary base tubes. The base tubes can be made of tubes, stainless steel tubes, copper tubes, etc., and the fins can be made of steel strips, stainless steel strips, copper strips, aluminum strips, etc.

[0003] However, existing equipment requires manual placement of materials into the forming mold before fin forming. This prolonged work increases worker fatigue and workload, wastes human resources, and reduces work efficiency. Furthermore, this operation is inherently dangerous. If the equipment switch is accidentally touched during the material loading process, the machine may be accidentally turned on, and fatigued workers may not be able to react in time, potentially causing personal injury. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of this invention is to provide an automatic fin forming device for the production of plate-fin heat exchangers.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] An automatic fin forming device for producing plate-fin heat exchangers includes a C-shaped plate fixedly connected to the middle position of the front and rear sides of the upper surface of a base. Two electric push rods are fixedly connected to the upper surface of the C-shaped plate. The output ends of the two electric push rods pass through the C-shaped plate and are fixedly connected to an upper mold. A lower mold is fixedly connected to the middle position of the upper surface of the base. Two stops are fixedly connected to one side of the lower mold. A feeding mechanism is fixedly connected to one side of the upper surface of the base. An ejection mechanism is fixedly connected to the middle position of the lower surface of the base.

[0007] The feeding mechanism includes a feeding frame fixed to one side of the upper surface of the base, a second through groove opened at the middle position of one side of the upper surface of the base, a guiding mechanism slidably connected inside the C-shaped plate, and a servo motor fixed to one side of the lower surface of the base. The feeding frame has discharge ports on both sides, a first through groove opened on the lower surface of the feeding frame, an alarm mechanism slidably connected at the middle position of one side of the feeding frame, a first threaded rod fixedly connected to the output end of the servo motor, an internal threaded sleeve plate threadedly connected to the outer side of the first threaded rod, a moving plate fixedly connected to the top of the internal threaded sleeve plate, a pusher plate fixedly connected to one side of the upper surface of the moving plate, a top plate fixedly connected to one side of the pusher plate, and a roller rotatably connected to the upper surface of the moving plate.

[0008] Furthermore, the movable plate is located inside the first through groove, and the internally threaded sleeve slides inside the second through groove.

[0009] Furthermore, the material guiding mechanism includes two second slide rods slidably connected inside the C-shaped plate. The outer surfaces of the two second slide rods are fitted with second springs. A guide wheel frame is fixedly connected to one side of the two second slide rods. A first drive motor is fixedly connected to the top of the guide wheel frame. A guide plate is fixedly connected to one side of the guide wheel frame. Multiple rotating shafts are rotatably connected to the inner surface of the guide wheel frame. Guide wheels and gears are fixedly connected to the outer surfaces of the rotating shafts. A synchronous belt is fitted to the outer surfaces of the multiple gears. A guide groove is opened on the outer surface of the guide wheel. The two sides of the first spring are fixedly connected to the feeding frame and the first slide rod, respectively.

[0010] Furthermore, the output end of the first drive motor is fixedly connected to the top of a rotating shaft, and a limit plate is fixedly connected to the other side of the second slide rod.

[0011] Furthermore, the alarm mechanism includes a first groove and a second groove on both sides inside the material feeding frame. A first slide rod is slidably connected through the inner surface of the first groove. A first spring is sleeved on the outer surface of the first slide rod. A pressing plate is fixedly connected to one side of the first slide rod. An alarm switch is fixedly connected to one side of the inner surface of the second groove.

[0012] Furthermore, the ejection mechanism includes two third springs fixed to the lower surface of the base, a third through groove and a fourth through groove formed on both sides of the lower surface of the base, and push rods fixed to both sides of the upper surface of the upper mold. The bottom of the two third springs is fixedly connected to a connecting plate, and the two sides of the connecting plate are fixedly connected to connecting frames. An L-shaped plate is fixedly connected to the side of the two connecting frames that are far apart from each other. A pusher wheel frame is fixedly connected to the top of the two connecting frames. The fourth through groove penetrates the interior of the lower mold. An adsorption mechanism is threadedly connected to the lower surface of the pusher wheel frame, and two pusher mechanisms are fixedly connected to the inner surface of the pusher wheel frame.

[0013] Furthermore, the top of the L-shaped plate extends through the interior of the third through groove, and the push rod is located directly above the L-shaped plate.

[0014] Furthermore, the pushing mechanism includes a motor base fixed to the inner surface of the pushing wheel frame and three pushing wheels on the front and rear sides of the inner surface. A second drive motor is fixedly connected to one side of the motor base, and a worm gear is fixedly connected to the output end of the second drive motor. An annular groove is formed on the outer surface of the pushing wheel, and a worm wheel is fixedly connected to the inner surface of the annular groove.

[0015] Furthermore, the worm is located inside the annular groove, and the worm meshes with the worm wheel.

[0016] Furthermore, the adsorption mechanism includes two limiting grooves located at the midpoint of the front and rear sides of the inner surface of the pusher wheel frame and a second threaded rod threadedly connected to the lower surface of the pusher wheel frame. The top of the second threaded rod passes through the pusher wheel frame and is rotatably connected to a magnet plate. A limiting slider is fixedly connected at the midpoint of the front and rear sides of the magnet plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. This application features a feeding mechanism that drives a pusher plate to move the bottom layer of the feeding frame out of the first through slot. This not only enables automatic feeding, effectively avoiding manual feeding operations and greatly improving the safety of workers, but also increases feeding efficiency and overall work efficiency.

[0019] 2. This application incorporates a material guiding mechanism, which enables secondary conveying of the sheet metal, proper positioning of the sheet metal, and movement of the sheet metal to the accurate location, effectively improving the quality of fin forming and avoiding accidents caused by manual oscillation.

[0020] 3. This application incorporates an alarm mechanism. When the height of the sheet material is lower than the bottom edge of the extrusion plate, the extrusion plate presses the alarm switch, promptly activating the alarm to alert the staff that the sheet material inside the feeding frame is about to be used up and needs to be added in a timely manner. This reduces the number of steps required for the operator to observe.

[0021] 4. This application has an ejection mechanism that can automatically eject the material during the stamping process to separate the material from the mold. This not only reduces the pneumatic force required to separate the fins from the mold, but also reduces the separation time, thereby further improving work efficiency.

[0022] 5. This application incorporates a pushing mechanism, where the pushing wheel transmits the fins through friction, conveying the fins out of the stamping area to complete the unloading process. This allows for rapid unloading of the fins, reduces manual operation steps, and improves the automation of the device.

[0023] 6. This application incorporates an adsorption mechanism, which generates magnetic force between the magnetic plate and the fins. The closer the magnetic plate is to the fins, the stronger the magnetic force, the greater the downward force on the fins, and the greater the friction between the fins and the pusher wheel, thereby effectively preventing slippage between the pusher wheel and the fins. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall front structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the C-shaped plate structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the feeding mechanism of the present invention;

[0027] Figure 4 This is a bottom view schematic diagram of the feeding mechanism of the present invention;

[0028] Figure 5 This is a first cross-sectional view of the feeding mechanism of the present invention;

[0029] Figure 6 This is a schematic diagram of the second cross-sectional structure of the feeding mechanism of the present invention;

[0030] Figure 7 This is a schematic diagram of the material guiding mechanism of the present invention;

[0031] Figure 8 This is a schematic cross-sectional view of the guide wheel frame structure of the present invention;

[0032] Figure 9 This is a schematic diagram of the structure of the present invention from a bottom view;

[0033] Figure 10 This is a schematic diagram of the ejection mechanism of the present invention;

[0034] Figure 11 This is a schematic diagram of the adsorption mechanism of the present invention;

[0035] Figure 12 This is a schematic diagram of the feeding mechanism of the present invention.

[0036] Explanation of the labels in the diagram:

[0037] 1. Base; 2. Cham-shaped plate; 3. Electric push rod; 4. Upper mold;

[0038] 5. Feeding mechanism; 51. Discharge frame; 52. Discharge port; 53. First through slot; 54. Second through slot;

[0039] 55. Alarm mechanism; 551. First slide bar; 552. First spring; 553. First groove; 554. Pressing plate; 555. Second groove; 556. Alarm switch;

[0040] 56. Material guiding mechanism; 561. Second slide bar; 562. Second spring; 563. Guide wheel frame; 564. Guide wheel; 565. First drive motor; 566. Guide groove; 567. Guide plate; 568. Synchronous belt; 569. Gear; 5610. Rotating shaft;

[0041] 57. Servo motor; 58. First threaded rod; 59. Push plate; 510. Moving plate; 511. Internal threaded sleeve; 512. Roller; 513. Top plate;

[0042] 6. Ejection mechanism; 61. Third spring; 62. Connecting plate; 63. Connecting frame;

[0043] 64. Pushing mechanism; 641. Motor base; 642. Second drive motor; 643. Pushing wheel; 644. Annular groove; 645. Worm; 646. Worm gear;

[0044] 65. Adsorption mechanism; 651. Second threaded rod; 652. Limiting groove; 653. Limiting slider; 654. Magnetic plate;

[0045] 66. Pusher wheel frame; 67. Third through slot; 68. Fourth through slot; 69. L-shaped plate; 610. Push rod;

[0046] 7. Lower mold; 8. Stop block. Detailed Implementation

[0047] 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. 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.

[0048] Please see Figures 1 to 12 An automatic fin forming device for producing plate-fin heat exchangers includes a C-shaped plate 2 fixedly connected to the middle position of the front and rear sides of the upper surface of a base 1. Two electric push rods 3 are fixedly connected to the upper surface of the C-shaped plate 2. The output ends of the two electric push rods 3 pass through the C-shaped plate 2 and are fixedly connected to an upper mold 4. A lower mold 7 is fixedly connected to the middle position of the upper surface of the base 1. Two stops 8 are fixedly connected to one side of the lower mold 7. A feeding mechanism 5 is fixedly connected to one side of the upper surface of the base 1. An ejection mechanism 6 is fixedly connected to the middle position of the lower surface of the base 1.

[0049] like Figure 3 - Figure 6As shown, the feeding mechanism 5 includes a feeding frame 51 fixed to one side of the upper surface of the base 1, a second through groove 54 opened at the middle position of one side of the upper surface of the base 1, a guiding mechanism 56 slidably connected inside the C-shaped plate 2, and a servo motor 57 fixed to one side of the lower surface of the base 1. The feeding frame 51 has discharge ports 52 on both sides, a first through groove 53 opened on the lower surface of the feeding frame 51, an alarm mechanism 55 slidably connected at the middle position of one side of the feeding frame 51, a first threaded rod 58 fixedly connected to the output end of the servo motor 57, an inner threaded sleeve plate 511 threadedly connected to the outer side of the first threaded rod 58, a moving plate 510 fixedly connected to the top of the inner threaded sleeve plate 511, a pusher plate 59 fixedly connected to one side of the upper surface of the moving plate 510, a top plate 513 fixedly connected to one side of the pusher plate 59, and a roller 512 rotatably connected to the upper surface of the moving plate 510.

[0050] The movable plate 510 is located inside the first through groove 53, and the internal threaded sleeve 511 slides inside the second through groove 54.

[0051] With the feeding mechanism 5 in place, the material required for fin forming is placed inside the feeding frame 51 before fin forming. After placement, the servo motor 57 is started to drive the first threaded rod 58 to rotate. The first threaded rod 58 drives the inner threaded sleeve 511 to move inside the second through slot 54 through the thread. The inner threaded sleeve 511 drives the moving plate 510 to move inside the first through slot 53, which in turn drives the pusher plate 59 to push the bottom layer of the sheet material in the feeding frame 51 to move out of the first through slot 53. The first threaded rod 58 continues to drive the moving plate 510 through the inner threaded sleeve 511 to move the sheet material. The plate is pushed to the top of the lower mold 7 for loading. When the plate is completely removed from the inside of the feeding frame 51, the second to last plate falls on the top plate 513. The servo motor 57 drives the first threaded rod 58 to reverse, which drives the inner threaded sleeve plate 511 and the moving plate 510 to move back. The top plate 513 slides under the plate. When the pusher plate 59 moves to the origin, the second to last plate automatically falls, ready for the next loading. This not only enables automatic loading, effectively avoiding manual loading, but also greatly improves the safety of workers during operation and increases loading efficiency, thus improving work efficiency.

[0052] like Figure 7 - Figure 8As shown, the material guiding mechanism 56 includes two second slide rods 561 slidably connected inside the C-shaped plate 2. The outer surfaces of the two second slide rods 561 are fitted with second springs 562. A guide wheel frame 563 is fixedly connected to one side of the two second slide rods 561. A first drive motor 565 is fixedly connected to the top of the guide wheel frame 563. A guide plate 567 is fixedly connected to one side of the guide wheel frame 563. Multiple rotating shafts 5610 are rotatably connected to the inner surface of the guide wheel frame 563. Guide wheels 564 and gears 569 are fixedly connected to the outer surface of the rotating shafts 5610. A synchronous belt 568 is fitted to the outer surface of the multiple gears 569. A guide groove 566 is opened on the outer surface of the guide wheel 564.

[0053] The output end of the first drive motor 565 is fixedly connected to the top of a rotating shaft 5610, and a limit plate is fixedly connected to the other side of the second slide bar 561.

[0054] The above embodiment, by setting up the feeding mechanism 5, can automatically feed the sheet metal, improve work efficiency, and improve the safety of workers. However, when the sheet metal is transported to the top of the lower mold 7, the pusher plate 59 pushes the material onto the lower mold 7, but it cannot completely transport the sheet metal to the optimal stamping position, which may require secondary alignment.

[0055] With the material guiding mechanism 56, when the pusher plate 59 pushes the sheet metal out of the feeding frame 51, the moving sheet metal is in contact with the two guide plates 567 beforehand. The sheet metal pushes the inclined sides of the two guide plates 567 to move away from each other, thereby driving the second slide rod 561 to move through the guide wheel frame 563 to compress the second spring 562 until the two sides of the sheet metal slide and contact the straight edges of the guide plates 567. The sheet metal slides between the two guide plates 567 and enters the interior of the guide groove 566. Under the compression of the two second springs 562, the friction between the guide groove 566 and the sheet metal increases. At the same time, the first drive motor 565 drives the rotating shaft 5610. The guide wheel 564 rotates, and the rotating shaft 5610 drives the gear 569 on its surface to rotate. Through the transmission of the synchronous belt 568, multiple other gears 569 rotate synchronously, thereby driving multiple other guide wheels 564 to rotate synchronously. This causes the sheet material to move inside the guide groove 566, thereby sliding on the surface of the lower mold 7. Under the obstruction of the two stops 8, the sheet material stops moving, and the guide wheel 564 stops working. This allows for secondary conveying of the sheet material, aligning the sheet material, and moving the sheet material to the accurate position, effectively improving the quality of fin forming and avoiding accidents caused by manual swinging.

[0056] like Figure 4 - Figure 6As shown, the alarm mechanism 55 includes a first groove 553 and a second groove 555 starting on both sides inside the feeding frame 51. A first slide rod 551 is slidably connected through the inner surface of the first groove 553. A first spring 552 is sleeved on the outer surface of the first slide rod 551. A pressing plate 554 is fixedly connected to one side of the first slide rod 551. An alarm switch 556 is fixedly connected to one side of the inner surface of the second groove 555. The two sides of the first spring 552 are fixedly connected to the feeding frame 51 and the first slide rod 551, respectively.

[0057] The above embodiment, by providing a material guiding mechanism 56, can perform secondary conveying of the sheet material, accurately conveying the sheet material to the stamping position, avoiding accidental injury caused by manual operation. However, when the material inside the feeding frame 51 is conveyed early, it is necessary to observe the remaining amount, which increases the workload.

[0058] With the alarm mechanism 55 in place, as the sheet material decreases, the height of the sheet material continuously decreases. When the height of the sheet material is lower than the bottom edge of the extrusion plate 554, the extrusion plate 554 loses its extrusion. Under the push of the first spring 552, the extrusion plate 554 is quickly pushed into the interior of the second groove 555, and the alarm switch 556 is pressed to promptly open the alarm and remind the staff that the sheet material inside the feeding frame 51 is about to be used up and needs to be added in time, which can reduce the number of steps required for the operator to observe.

[0059] During feeding, the first slide bar 551 is pulled to move the extrusion plate 554 into the first groove 553 to avoid the extrusion plate 554 from obstructing the feeding. When the material inside the feeding frame 51 is finished, the extrusion plate 554 is squeezed by the plate and stays in the first groove 553 and is fixed, so the first slide bar 551 is fixed and the first spring 552 is in a stretched state.

[0060] like Figure 9 - Figure 10 As shown, the ejection mechanism 6 includes two third springs 61 fixed to the lower surface of the base 1, a third through groove 67 and a fourth through groove 68 opened on both sides of the lower surface of the base 1, and push rods 610 fixed to both sides of the upper surface of the upper mold 4. The bottom of the two third springs 61 is fixedly connected to a connecting plate 62, and the two sides of the connecting plate 62 are fixedly connected to a connecting frame 63. The side of the two connecting frames 63 that is far apart from each other is fixedly connected to an L-shaped plate 69. The top of the two connecting frames 63 is fixedly connected to a pusher wheel frame 66. The fourth through groove 68 penetrates the interior of the lower mold 7. The lower surface of the pusher wheel frame 66 is threadedly connected to an adsorption mechanism 65, and the inner surface of the pusher wheel frame 66 is fixedly connected to two pusher mechanisms 64.

[0061] The top of the L-shaped plate 69 extends through the interior of the third through slot 67, and the push rod 610 is located directly above the L-shaped plate 69.

[0062] When stamping sheet metal, the formed sheet metal may get stuck inside the stamping die, requiring manual unloading. Unloading requires a lot of force and reduces the efficiency of fin forming.

[0063] With the ejection mechanism 6 in place, when the electric push rod 3 moves the upper mold 4 downward for stamping, it simultaneously lowers the two push rods 610. The two push rods 610 contact the L-shaped plates 69 and press them downward. The two L-shaped plates 69 move the connecting frame 63 downward, causing the pusher wheel frame 66 and the pusher mechanism 64 to move out of the fourth through slot 68. At the same time, the two third springs 61 are stretched to avoid obstructing the stamping of the sheet metal. During the stamping process, the two sides of the sheet metal move out of the guide slot 566. After the stamping is completed, the electric push rod 3 moves the upper mold 4 upward. The upper mold 4 drives the push rod 610 to move upward, the L-shaped plate 69 loses its squeezing effect, the third spring 61 loses its squeezing force, and the two connecting frames 63, through the connecting plate 62 and pulled by the third spring 61, drive the two pusher wheel frames 66 to move into the interior of the fourth through slot 68. Through the pusher mechanism 64, the fins formed on the lower mold 7 are pushed upward, so that the fins are separated from the interior of the lower mold 7. Thus, during the stamping process, automatic ejection can be performed to separate the material from the mold. This not only reduces the pneumatic force required to separate the fins from the mold, but also reduces the separation time, further improving work efficiency.

[0064] like Figure 11 - Figure 12 As shown, the pushing mechanism 64 includes a motor base 641 fixed on the inner surface of the pushing wheel frame 66 and three pushing wheels 643 on the front and rear sides of the inner surface. A second drive motor 642 is fixedly connected to one side of the motor base 641. A worm gear 645 is fixedly connected to the output end of the second drive motor 642. An annular groove 644 is opened on the outer surface of the pushing wheel 643. A worm gear 646 is fixedly connected to the inner surface of the annular groove 644.

[0065] The worm 645 is located inside the annular groove 644, and the worm 645 meshes with the worm wheel 646.

[0066] The above embodiment, by providing an ejection mechanism 6, can eject the formed fins from the inside of the lower mold 7 for separation, which can prevent the fins from getting stuck inside the lower mold 7 and reduce the time for separating the fins from the lower mold 7. However, if the formed fins still need to be manually removed, there will still be safety hazards.

[0067] With the pusher mechanism 64, after the pusher wheel frame 66 drives the pusher wheel 643 to push the fins out of the lower mold 7, the second drive motor 642 is turned on to drive the worm 645 to rotate. The worm 645 drives the worm wheel 646, which meshes with it, to rotate. The worm wheel 646 drives the pusher wheel 643 to rotate. The pusher wheel 643 then transmits the fins through friction, conveying the fins out of the stamping area to complete the unloading. This allows for rapid unloading of the fins, reduces manual operation steps, and improves the automation of the device.

[0068] like Figure 11 - Figure 12 As shown, the adsorption mechanism 65 includes two limiting grooves 652 located at the middle position of the front and rear sides of the inner surface of the pusher wheel frame 66 and a second threaded rod 651 threadedly connected to the lower surface of the pusher wheel frame 66. The top of the second threaded rod 651 passes through the pusher wheel frame 66 and is rotatably connected to a magnet plate 654. A limiting slider 653 is fixedly connected at the middle position of the front and rear sides of the magnet plate 654.

[0069] The above embodiment, by providing a pushing mechanism 64, can transport the fins and deliver them from the stamping area for unloading, reducing the steps of manual operation. However, if the friction between the fins and the pushing wheel 643 is too small, it will cause slippage between the pushing wheel 643 and the fin surface, making it impossible to transport the fins.

[0070] With the adsorption mechanism 65 in place, when the pusher wheel 643 is conveying the fins, if slippage occurs between the pusher wheel 643 and the fins, the second threaded rod 651 is rotated to move the magnet plate 654 upward and closer to the fins. The closer the magnet plate 654 is to the fins, the stronger the magnetic force, the greater the downward force of the fins, and the greater the friction between the pusher wheel 643 and the fins, thus effectively preventing slippage between the pusher wheel 643 and the fins.

[0071] Instructions for use: First, add the required sheet material into the feeding frame 51. The first threaded rod 58 drives the internal threaded sleeve 511, the moving plate 510, and the pusher plate 59 to push the sheet material out of the feeding frame 51 for feeding. The two guiding mechanisms 56 can straighten the sheet material and perform secondary transmission to transport the sheet material to the stamping position to avoid deviation during the sheet material transportation process. At the same time, the alarm mechanism 55 can promptly alarm the staff to remind them that the sheet material in the feeding frame 51 is about to be used up.

[0072] Then, the electric push rod 3 drives the upper mold 4 to stamp the sheet on the lower mold 7, drives the push rod 610 to move downward, presses the L-shaped plate 69 downward, and drives the push wheel frame 66 to move out of the fourth through groove 68 as a whole. The two sides of the sheet being formed move closer to the middle and move out of the guide groove 566, and the height of the two sides of the sheet remains unchanged.

[0073] Finally, as the upper mold 4 moves upward with the electric push rod 3, the third spring 61 loses its compression. The third spring 61 drives the pusher wheel frame 66 to move back into the fourth through slot 68 through the connecting plate 62 and the connecting frame 63, so that the pusher wheel 643 contacts the fins and pushes the fins inside the lower mold 7 upward for separation. Through the rotation of multiple sets of pusher wheels 643, the fins on the pusher wheels 643 are conveyed and transported out of the stamping area through the stop block 8 for unloading. By adjusting the distance between the magnet plate 654 and the fins, the magnetic force between the magnet plate 654 and the fins can be adjusted, thereby increasing the friction between the pusher wheel 643 and the fins and preventing slippage between the pusher wheel 643 and the fins.

[0074] The above description is merely a preferred embodiment of the present invention; however, 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 its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. An automatic fin forming device for producing plate-fin heat exchangers, comprising a C-shaped plate (2) fixedly connected at the middle position of the front and rear sides of the upper surface of a base (1), two electric push rods (3) fixedly connected to the upper surface of the C-shaped plate (2), the output ends of the two electric push rods (3) passing through the C-shaped plate (2) and fixedly connected to an upper mold (4), a lower mold (7) fixedly connected at the middle position of the upper surface of the base (1), and two stops (8) fixedly connected to one side of the lower mold (7); Its features are: A feeding mechanism (5) is fixedly connected to one side of the upper surface of the base (1), and an ejection mechanism (6) is fixedly connected to the middle position of the lower surface of the base (1). The feeding mechanism (5) includes a feeding frame (51) fixed to one side of the upper surface of the base (1), a second through groove (54) opened at the middle position of one side of the upper surface of the base (1), a guiding mechanism (56) slidably connected inside the shaped plate (2), and a servo motor (57) fixed to one side of the lower surface of the base (1). The feeding frame (51) has discharge ports (52) on both sides, and a first through groove (53) is opened on the lower surface of the feeding frame (51). A servo motor (57) is slidably connected at the middle position of one side of the feeding frame (51). The alarm mechanism (55) has a first threaded rod (58) fixedly connected to the output end of the servo motor (57). The outer side of the first threaded rod (58) is threadedly connected to an inner threaded sleeve plate (511). A movable plate (510) is fixedly connected to the top of the inner threaded sleeve plate (511). A pusher plate (59) is fixedly connected to one side of the upper surface of the movable plate (510). A top plate (513) is fixedly connected to one side of the pusher plate (59). A roller (512) is rotatably connected to the upper surface of the movable plate (510). The ejection mechanism (6) includes two third springs (61) fixed to the lower surface of the base (1), a third through groove (67) and a fourth through groove (68) opened on both sides of the lower surface of the base (1), and push rods (610) fixed to both sides of the upper surface of the upper mold (4). The bottom of the two third springs (61) is fixedly connected to a connecting plate (62), and the two sides of the connecting plate (62) are fixedly connected to a connecting frame (63). The side of the two connecting frames (63) that is far apart from each other is fixedly connected to an L-shaped plate (69). The top of the two connecting frames (63) is fixedly connected to a pusher wheel frame (66). The fourth through groove (68) penetrates the interior of the lower mold (7). The lower surface of the pusher wheel frame (66) is threadedly connected to an adsorption mechanism (65), and the inner surface of the pusher wheel frame (66) is fixedly connected to two pusher mechanisms (64). The pushing mechanism (64) includes a motor base (641) fixed on the inner surface of the pushing wheel frame (66) and three pushing wheels (643) on the front and rear sides of the inner surface. A second drive motor (642) is fixedly connected to one side of the motor base (641), and a worm gear (645) is fixedly connected to the output end of the second drive motor (642). An annular groove (644) is opened on the outer surface of the pushing wheel (643), and a worm wheel (646) is fixedly connected to the inner surface of the annular groove (644). The adsorption mechanism (65) includes two limiting grooves (652) located at the middle position of the front and rear sides of the inner surface of the pusher wheel frame (66) and a second threaded rod (651) threadedly connected to the lower surface of the pusher wheel frame (66). The top of the second threaded rod (651) passes through the pusher wheel frame (66) and is rotatably connected to a magnet plate (654). A limiting slider (653) is fixedly connected at the middle position of the front and rear sides of the magnet plate (654).

2. The automatic fin forming device for producing plate-fin heat exchangers according to claim 1, characterized in that: The movable plate (510) is located inside the first through groove (53), and the internal threaded sleeve plate (511) slides inside the second through groove (54).

3. The automatic fin forming device for producing plate-fin heat exchangers according to claim 1, characterized in that: The material guiding mechanism (56) includes two second slide rods (561) slidably connected inside the C-shaped plate (2). The outer surfaces of the two second slide rods (561) are fitted with second springs (562). A guide wheel frame (563) is fixedly connected to one side of the two second slide rods (561). A first drive motor (565) is fixedly connected to the top of the guide wheel frame (563). A guide plate (567) is fixedly connected to one side of the guide wheel frame (563). Multiple rotating shafts (5610) are rotatably connected to the inner surface of the guide wheel frame (563). A guide wheel (564) and a gear (569) are fixedly connected to the outer surface of the rotating shaft (5610). A synchronous belt (568) is fitted to the outer surface of the multiple gears (569). A guide groove (566) is opened on the outer surface of the guide wheel (564).

4. The automatic fin forming device for producing plate-fin heat exchangers according to claim 3, characterized in that: The output end of the first drive motor (565) is fixedly connected to the top of a rotating shaft (5610), and a limit plate is fixedly connected to the other side of the second slide bar (561).

5. The automatic fin forming device for producing plate-fin heat exchangers according to claim 1, characterized in that: The alarm mechanism (55) includes a first groove (553) and a second groove (555) starting on both sides inside the feeding frame (51). The inner surface of the first groove (553) is slidably connected to a first slide rod (551). The outer surface of the first slide rod (551) is fitted with a first spring (552). A pressing plate (554) is fixedly connected to one side of the first slide rod (551). An alarm switch (556) is fixedly connected to one side of the inner surface of the second groove (555). The two sides of the first spring (552) are fixedly connected to the feeding frame (51) and the first slide rod (551) respectively.

6. The automatic fin forming device for producing plate-fin heat exchangers according to claim 1, characterized in that: The top of the L-shaped plate (69) extends through the interior of the third through groove (67), and the push rod (610) is located directly above the L-shaped plate (69).

7. An automatic fin forming device for producing plate-fin heat exchangers according to claim 6, characterized in that: The worm (645) is located inside the annular groove (644), and the worm (645) meshes with the worm wheel (646).

Images