A kind of processing device and processing method of chipped finned tube

Abstract

The application provides a kind of toothed finned tube processing device and its processing method, the toothed finned tube processing device, lower support mould is fixed on machine tool bed, horizontal drive mechanism is driven to connect with shovel cutting assembly;Shovel cutter is movably arranged along oblique cutting depth direction, to shovel hollow profile surface and form fin, oblique cutting depth direction and horizontal direction have preset cutting angle;Righting push plate is located in the front side of shovel cutting assembly feed direction, righting push plate is rotatably connected with shovel cutting assembly, the opposite ends of elastic member are connected with shovel cutting assembly and righting push plate respectively, righting push plate can right the previous fin when new fin is formed by shovel cutter, elastic member is used to drive righting push plate to lift along the surface of new fin when shovel cutting assembly retreats, and reset after passing new fin.Solve the technical problems that existing equipment is easy to deform when processing hollow profile, fin is easy to fall, improve the processing quality, finished product yield and production efficiency of toothed finned tube.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger processing technology, and in particular to a toothed finned tube processing apparatus and processing method. Background Technology

[0002] Heat exchangers are core heat exchange devices widely used in refrigeration, air conditioning, chemical, and electronic heat dissipation fields. To improve heat exchange efficiency, fins are typically machined onto the outer surface of the heat exchange tubes to increase the heat dissipation area. Toothed heat exchangers, due to their advantages of integral molding of fins and base tubes and zero contact thermal resistance, have extremely high application value in new energy, chemical, and electronic heat dissipation fields. As the core heat exchange element of a toothed heat exchanger, the machining quality of the toothed finned tube directly determines the overall performance of the heat exchanger.

[0003] See Figure 1 As shown, Figure 1 This is a schematic diagram of the structure of a toothed finned tube in the prior art; the fins and the base tube are integrally formed, and a cutting process is used during processing, in which a layer of metal is directly scraped off from the surface of the metal tube by a cutting tool and made to stand up to form fins.

[0004] The applicant has discovered at least the following technical problems with the existing technology: Firstly, when processing hollow metal profiles used to manufacture this heat exchanger, the existing processing equipment is prone to deformation and has poor positioning stability. During the cutting process, the cutting tool applies a large cutting force to the surface of the hollow profile, easily causing it to collapse or shift position under stress. Secondly, the fins are extremely prone to collapsing. The fins formed by cutting are relatively thin, and the material at the root connection with the base tube is in a state of plastic deformation during processing, resulting in weak upright rigidity. During continuous cutting, due to factors such as the release of cutting stress, material springback, and lateral interference between adjacent fins, the formed or forming fins are prone to tilting or even collapsing, leading to uneven fin spacing and skewed fins.

[0005] Therefore, there is an urgent need to develop a toothed finned tube processing device and its processing method to solve the technical problems of easy deformation and fin collapse of existing equipment when processing hollow profiles, thereby improving the processing quality and production efficiency of toothed finned tubes. Summary of the Invention

[0006] The purpose of this invention is to provide a toothed finned tube processing device and method to solve the technical problems of easy deformation and fin collapse of hollow profiles during toothed finned tube processing in the prior art. The various technical effects of the preferred technical solutions provided by this invention are detailed below.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] The finned tube processing apparatus provided by this invention is used to process fins into hollow profiles, and includes a machine bed, a lower support mold, a horizontal drive mechanism, a straightening push plate, an elastic element, and a cutting assembly with shovels, wherein: The lower support mold is fixed to the machine tool bed and is used to position the hollow profile; The horizontal drive mechanism is connected to the cutting assembly for driving the cutting assembly to feed and retract. The scraper is movably disposed along the oblique cutting depth direction to scrape the surface of the hollow profile and form fins, wherein the oblique cutting depth direction has a preset cutting angle with the horizontal direction; The straightening push plate is located in front of the feed direction of the cutting assembly. The straightening push plate is rotatably connected to the cutting assembly. The two ends of the elastic element are respectively connected to the cutting assembly and the straightening push plate. The straightening push plate can straighten the previous fin when the blade cuts out a new fin. The straightening push plate can be lifted along the surface of the new fin when the cutting assembly retracts, and reset under the action of the elastic element after passing the new fin.

[0009] Preferably, the shovel-cutting assembly further includes an assembly frame, a shovel-cutting drive device, and a blade holder, wherein: The assembly frame is located on the moving part of the horizontal drive mechanism, the shovel cutting drive device is fixed on the assembly frame, the shovel cutting drive device is inclined relative to the horizontal plane, the output end of the shovel cutting drive device is movable along the inclined cutting depth direction, the blade holder is slidably connected to the assembly frame, and the shovel blade is fixed on the blade holder; The blade holder is connected to the output end of the cutting drive device via a floating connection structure, which is configured to allow the blade to generate adaptive deflection when subjected to cutting force.

[0010] Preferably, the toothed finned tube processing device further includes a straightening push plate seat, a straightening push plate shaft, and a bracket, wherein: A bearing seat is fixed on the shovel assembly, the straightening push plate seat is fixedly connected to the straightening push plate shaft, the straightening push plate shaft is rotatably connected to the bearing seat, and the straightening push plate is fixed on the straightening push plate seat; The bracket is fixed to the front side of the cutting assembly in the feed direction; The elastic element includes a pneumatic spring, which is inclined and its upper end is hinged to the bracket, and its lower end is movably connected to the straightening push plate shaft, for driving the straightening push plate to lift with the new fins when the cutting assembly retracts.

[0011] Preferably, the straightening push plate includes a mounting plate and a pushing plate that are fixedly connected, wherein: The mounting plate is fixed on the straightening push plate base. The push plate is inclined. When the elastic element is in the initial state, there is a gap between the push plate and the scraper. The gap is inclined relative to the horizontal plane. The gap allows the scraper to cut the new fins formed on the surface of the hollow profile and insert them into the gap, and bend the fins to a preset initial angle.

[0012] Preferably, the shovel assembly further includes a cutting depth angle adjustment mechanism for adjusting the cutting angle of the shovel blade; The depth-of-cut angle adjustment mechanism includes a fixed bracket, a front axle seat, and an angle adjustment screw, wherein: The fixed bracket and the front axle seat are both fixed on the moving part of the horizontal drive mechanism. The front axle seat is rotatably connected to the assembly frame in the vertical plane. The fixed bracket is located on the rear side of the assembly frame. The angle adjusting screw is inclined, and its lower end is movably connected to the rear end of the assembly frame. The angle adjusting screw can be raised and lowered under the action of external force, thereby pulling or pushing the assembly frame to rotate around the front axle seat in the vertical plane, thereby adjusting the tilt angle of the assembly frame.

[0013] Preferably, the fixed bracket includes a wing plate, an adjusting shaft, a pad, and an adjusting nut, wherein: The wing plates are located on opposite sides at the rear end of the assembly frame, the adjusting shaft is rotatably connected above the two wing plates, and the two pads clamp the adjusting shaft; The angle adjusting screw passes through the pad and the adjusting shaft. The adjusting nut is located on the upper side of the pad and is threadedly connected to the angle adjusting screw. Tightening the adjusting nut can drive the angle adjusting screw to rise or fall. The wing plate is provided with adjustment holes, which are spaced apart along the height direction of the wing plate. The locking member passes through the adjustment holes to lock the wing plate to the assembly frame.

[0014] Preferably, the cutting depth angle adjustment mechanism further includes a tie rod and a tie seat, wherein: The inclined support is fixed to the moving part of the horizontal drive mechanism, and the upper and lower ends of the inclined rod are respectively hinged to the wing plate and the inclined support.

[0015] Preferably, the toothed finned tube processing device further includes a top block, which is fixed to the front end of the lower support mold and is used for axial positioning of the hollow profile; The toothed finned tube processing device also includes a clamping and positioning mechanism, which is located on the cutting assembly and is used to clamp the upper surface of the hollow profile. The clamping and positioning mechanism includes a pressure roller, a pressure roller bracket, and a pressure roller drive device, wherein: The pressure roller drive device is fixed on the cutting assembly. The pressure roller is connected to the output end of the pressure roller drive device through the pressure roller bracket. The pressure roller is rotatably connected to the pressure roller bracket.

[0016] Preferably, the horizontal drive mechanism includes a horizontal drive device, a nut, a horizontal lead screw, and a horizontal sliding guide structure, wherein: The horizontal drive device is fixed to the machine tool bed and is connected to the horizontal lead screw drive, used to drive the horizontal lead screw to rotate forward or reverse. The nut serves as the moving part of the horizontal drive mechanism. The nut is sleeved on the horizontal lead screw to form a lead screw and nut pair. The cutting assembly is slidably connected to the machine tool bed through a horizontal sliding guide structure.

[0017] This invention provides a method for processing toothed finned tubes, using the aforementioned toothed finned tube processing apparatus. The processing method includes: S1. Position the hollow profile support on the lower support mold; S2. Drive the scraper to feed along the oblique cutting depth direction. The scraper cuts into the surface of the hollow profile in an oblique posture, scrapes up a layer of metal and bends it to form a new fin. The straightening push plate straightens the previous fin. S3. After the cutting reaches the set fin height, the scraper retracts upward along the oblique cutting depth direction. During the retraction process, the straightening push plate is lifted along the new fin surface and resets under the action of the elastic element after passing the new fin. S4. After the blade retraction is completed, the horizontal drive mechanism drives the blade-cutting assembly to move a set distance in the blade retraction direction to prepare for the next blade-cutting operation. The set distance is the spacing between adjacent fins.

[0018] The toothed finned tube processing device and method provided by this invention have the following advantages compared with the prior art: the shovel is movably arranged along the oblique cutting depth direction, which can cut the surface of the hollow profile and form fins. A straightening push plate is arranged on the front side of the feeding direction of the cutting assembly. When the shovel cuts out a new fin, the straightening push plate can promptly abut against and straighten the previous formed fin. The elastic element enables the straightening push plate to have adaptive floating capability. When the cutting assembly retracts, the elastic element can drive the straightening push plate to automatically lift with the new fin and automatically reset after passing the new fin. This device solves the technical problems of easy deformation and easy fin collapse when processing hollow profiles in existing equipment, and improves the processing quality, finished product yield and production efficiency of toothed finned tubes. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a toothed finned tube in the prior art; Figure 2 This is a schematic diagram of the overall structure of the toothed finned tube processing device; Figure 3 This is a three-dimensional structural diagram of the combination of the shearing assembly and the straightening push plate; Figure 4 This is a schematic diagram of the bottom view structure of the cutting assembly and the straightening push plate in combination; Figure 5 This is a side view of the shovel assembly in conjunction with the straightening push plate; Figure 6 This is a schematic diagram of the working structure of the cutting drive device, the blade and the straightening push plate; Figure 7 It is a three-dimensional structural diagram of the cooperation between the shovel blade and the straightening push plate; Figure 8 This is a side view of the shovel blade and the straightening push plate working together; Figure 9 This is a diagram showing the state of the blade when it first starts cutting the new fins; Figure 10 This is a diagram showing the state of the fins after the spatula has finished cutting them.

[0021] In the diagram: 1. Machine bed; 2. Lower support mold; 3. Horizontal drive mechanism; 31. Horizontal drive device; 32. Nut; 33. Horizontal lead screw; 34. Horizontal sliding guide structure; 41. Straightening push plate; 411. Mounting plate; 412. Pushing plate; 42. Elastic element; 43. Straightening push plate seat; 44. Straightening push plate shaft; 45. Bracket; 46. Shaft seat; 5. Shovel assembly; 51. Shovel blade; 52. Assembly frame; 53. Shovel drive device 54. Tool holder; 55. Floating ball head; 6. Cutting depth angle adjustment mechanism; 61. Fixed bracket; 611. Wing plate; 612. Adjusting shaft; 613. Pad block; 614. Adjusting nut; 62. Front axle seat; 63. Angle adjustment screw; 64. Diagonal tie rod; 65. Diagonal tie seat; 66. Adjusting hole; 7. Top block; 81. Pressure roller; 82. Pressure roller bracket; 83. Pressure roller drive device; 9. Feed gap; 10. Fin; 20. Hollow profile. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0023] In the description of this invention, it should be understood that the terms "center," "length," "width," "height," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and "side," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0024] See Figure 1 As shown, Figure 1 This is a schematic diagram of the structure of a toothed finned tube in the prior art; the fins and the base tube are integrally formed, and a cutting process is used during processing, in which a layer of metal is directly scraped off from the surface of the metal tube by a cutting tool and made to stand up to form fins.

[0025] This invention provides a toothed finned tube processing device and method, which solves the technical problems of easy deformation and fin collapse of existing equipment when processing hollow profiles, and improves the processing quality, finished product yield and production efficiency of toothed finned tubes.

[0026] The following is combined Figures 2-10 The technical solution provided by this invention will be described in more detail below.

[0027] Example 1 See Figures 2-10The present invention provides a toothed finned tube processing device for processing hollow profiles into fins. It includes a machine bed, a lower support mold, a horizontal drive mechanism, a straightening push plate, an elastic element, and a cutting assembly with a toothed blade. The lower support mold is fixed to the machine bed and is used to position the hollow profile. The horizontal drive mechanism is driven by the cutting assembly and is used to drive the cutting assembly 5 to feed and retract. The toothed blade 51 is movably arranged along an oblique cutting depth direction to cut the surface of the hollow profile 20 and form fins 10. There is a preset cutting angle between the cutting depth direction and the horizontal direction; the straightening push plate 41 is located on the front side of the feed direction of the scraping assembly 5, and the straightening push plate 41 is rotatably connected to the scraping assembly 5. The opposite ends of the elastic element 42 are respectively connected to the scraping assembly 5 and the straightening push plate 41. When the scraper 51 scrapes out a new fin 10, the straightening push plate 41 can straighten the previous fin 10. The elastic element 42 is used to drive the straightening push plate 41 to lift with the new fin 10 when the scraping assembly 5 retracts, and reset after passing the new fin 10. The straightening push plate 41 can be lifted along the surface of the new fin 10 when the scraping assembly 5 retracts, and reset under the action of the elastic element 42 after passing the new fin 10.

[0028] See Figure 2 The machine tool bed 1 bears the moving parts and withstands the cutting forces generated during processing. The lower support mold 2 is firmly fixed to the machine tool bed 1, providing stable support and positioning for the hollow profile 20 to be processed. The lower support mold 2 has a V-groove or U-groove structure to position different hollow profiles 20.

[0029] See Figures 2-10 The scraper 51 is movable along the oblique cutting depth direction, thereby scraping the surface of the hollow profile 20 and forming fins 10. The cutting edge of the scraper 51 can scrape metal material from the surface of the hollow profile 20 and bend it to form fins 10. See also Figure 8 and Figure 9 As shown, there is a preset cutting angle α between the oblique cutting depth direction and the horizontal direction.

[0030] See Figures 2-10 The straightening push plate 41 is located on the front side of the feed direction of the cutting assembly 5. Its main function is to straighten the previously formed fin 10 when the scraper 51 cuts out a new fin 10. Figure 8 and Figure 9 As shown.

[0031] See Figures 6-10 The straightening push plate 41 is rotatably connected to the cutting assembly 5. For example, its rotation relative to the cutting assembly 5 can be achieved through a structure such as a pin.

[0032] See Figures 6-10The two ends of the elastic element 42 are connected to the cutting assembly 5 and the straightening push plate 41, respectively. Its function is to rotate the straightening push plate 41 when the cutting assembly 5 retracts, lift it along the surface of the new fin 10, and return it to its original position under the action of the elastic element 42 after passing the new fin 10. The elastic element 42 can be in the form of a pneumatic spring, leaf spring, etc. Its elastic force can pull the straightening push plate 41 back to its initial position after passing the fin 10, preparing it for the next cutting.

[0033] See Figures 6-10 The structure of the elastic element 42 and the straightening push plate 41 working together can effectively prevent the formed fins 10 from falling over or tilting, ensuring the uprightness of the fins 10.

[0034] In this embodiment, the shovel-tooth fin 10 tube processing device improves the positioning accuracy and stability of the hollow profile 20 during processing through the machine bed 1 and the lower support mold 2, thereby reducing the risk of profile deformation. The synergistic effect of the straightening push plate 41 and the elastic element 42 can promptly straighten the previous fin 10 when the shovel 51 cuts out a new fin 10, and realize the lifting and resetting of the straightening push plate 41 during the retraction of the blade, suppressing the phenomenon of fin 10 tilting or falling over during continuous processing, ensuring the uprightness and spacing uniformity of the fin 10, and thus improving the processing quality and production efficiency of the shovel-tooth fin 10 tube.

[0035] See Figure 2 The horizontal drive mechanism 3 drives the cutting assembly 5 to reciprocate in the horizontal direction, thereby realizing the feeding and retraction of the blade 51. This horizontal drive mechanism 3 can employ various driving methods; for example, it can achieve horizontal movement through a gear and rack transmission system in conjunction with a servo motor, or it can provide reciprocating pushing and pulling force through a hydraulic cylinder or pneumatic cylinder. When the cutting assembly 5 feeds, the blade 51 is driven forward to cut; when the cutting assembly 5 retracts, the blade 51 is driven backward to disengage from the workpiece.

[0036] See Figure 2 As shown, in this embodiment, the horizontal drive mechanism 3 includes a horizontal drive device 31 (such as a motor), a nut 32, a horizontal lead screw 33, and a horizontal sliding guide structure 34. The horizontal drive device 31 is fixed on the machine tool bed 1 and is drivenly connected to the horizontal lead screw 33 to drive the horizontal lead screw 33 to rotate forward or backward. The nut 32 serves as a moving part and is threadedly connected to the horizontal lead screw 33. The cutting assembly 5 is slidably connected to the machine tool bed 1 through the horizontal sliding guide structure 34.

[0037] As an alternative implementation, see [link to implementation details]. Figures 3-6As shown, the shovel-cutting assembly 5 of this embodiment also includes an assembly frame 52, a shovel-cutting drive device 53, and a tool holder 54, wherein: the assembly frame 52 is located on the moving part of the horizontal drive mechanism 3, the shovel-cutting drive device 53 is fixed on the assembly frame 52, the shovel-cutting drive device 53 is inclined relative to the horizontal plane, the output end of the shovel-cutting drive device 53 is movable along the oblique cutting depth direction, the tool holder 54 is slidably connected to the assembly frame 52, and the shovel blade 51 is fixed on the tool holder 54; the tool holder 54 and the output end of the shovel-cutting drive device 53 are connected by a floating connection structure, the floating connection structure is configured to allow the shovel blade 51 to generate adaptive deflection when subjected to cutting force.

[0038] See Figures 3-6 As shown, the scraping drive device 53 can be implemented in various forms, such as a hydraulic cylinder, a pneumatic cylinder, a ball screw driven by a servo motor, etc., and its function is to control the cutting depth movement of the scraper 51. The tool holder 54 is slidably connected to the assembly frame 52 to fix the scraper 51 and bear the movement of the scraper 51 during the cutting process.

[0039] During actual cutting, the surface of the metal profile may have uneven hardness or slight deformation. When the scraper blade 51 encounters a hard spot, it is prone to chipping or overloading the cutting drive device 53. (See also...) Figure 5 To address the aforementioned issues, the floating connection structure in this embodiment can be the floating ball head 55 found in the prior art.

[0040] See Figure 5 The tool holder 54 and the scraping drive device 53 are connected via a floating ball joint 55. When subjected to lateral or non-uniform cutting forces, the scraper 51 can generate a slight adaptive floating deflection to absorb impact stress, thereby protecting the scraper 51 and improving the surface finish of the fin 10. Simultaneously, because the scraper 51 experiences more uniform force, its service life is extended, reducing production costs and improving processing efficiency. This structure ensures that the scraper 51 can still operate in optimal condition under complex cutting environments, guaranteeing the stability and reliability of the fin 10 tube processing.

[0041] In actual processing, the rotational connection method of the straightening push plate 41 and the installation method of the elastic element 42 may affect the smoothness of the straightening push plate 41's movement and its adaptability to different fin heights 10. In particular, when the cutting assembly 5 retracts, how to ensure that the straightening push plate 41 can be smoothly lifted with the new fin 10 and accurately reset after passing the new fin 10 is a technical problem that needs to be solved.

[0042] For the above issues, please refer to Figure 3 , Figure 6 and Figure 7The shovel fin 10 tube processing device also includes a straightening push plate seat 43, a straightening push plate shaft 44, and a bracket 45. Among them, a shaft seat 46 is fixed on the shovel assembly 5, the straightening push plate seat 43 is fixedly connected to the straightening push plate shaft 44, the straightening push plate shaft 44 is rotatably connected to the shaft seat 46, and the straightening push plate 41 is fixed on the straightening push plate seat 43; the bracket 45 is fixed on the front side of the shovel assembly 5 in the feed direction; the elastic element 42 includes a pneumatic spring, or gas spring, the pneumatic spring is inclined, and the upper end of the pneumatic spring is hinged to the bracket 45, and its lower end is movably connected to the straightening push plate shaft 44, which is used to drive the straightening push plate 41 to lift with the new fin 10 when the shovel assembly 5 retracts.

[0043] The elastic element 42 uses a pneumatic spring, which can provide flexible reset power and buffer damping to ensure that the straightening push plate can smoothly and without damaging the newly formed fins and automatically reset.

[0044] See Figure 7 The bearing seat 46 is fixed on the assembly frame 52. The function of the bearing seat 46 is to provide a stable rotation fulcrum for the straightening push plate shaft 44, so as to ensure that the straightening push plate 41 can rotate around the axis.

[0045] See Figure 7 The bracket 45 is securely fixed to the front end of the cutting assembly 5, i.e., the front side of the feed direction of the blade 51, by means of bolts, welding, etc. The bracket 45 provides a mounting point for the elastic element 42. The pneumatic spring can flexibly drive the centering push plate shaft 44 to rotate during the extension and retraction process.

[0046] See Figure 9 and Figure 10 As shown, when the cutting assembly 5 retracts, the cutting blade 51 exits from the hollow profile 20, and the newly formed fin 10 will be tilted upwards. At this time, the straightening push plate 41 rotates around the straightening push plate shaft 44 and lifts along the surface of the new fin 10 to prevent the straightening push plate 41 from pressing down the newly processed fin 10. After the straightening push plate 41 passes the new fin, the straightening push plate 41 is reset under the pull of the pneumatic spring, and the straightening push plate 41 can return to its initial state, which facilitates the normal processing of the next fin.

[0047] In actual operation, when the scraper 51 cuts the surface of the hollow profile 20 to form new fins 10, the contact method and initial bending state of the new fins 10 with the straightening push plate 41 in the early stage of formation are crucial to the final forming quality of the fins 10 and the subsequent straightening effect. If the new fins 10 are not effectively guided and pre-bent in the early stage of formation, it may cause deformation of the fins 10, or even damage when in contact with the straightening push plate 41, thereby affecting the overall processing accuracy and product quality of the fin tube.

[0048] Therefore, how to effectively guide and pre-bend the new fins 10 in the early stages of their formation has become a technical problem that urgently needs to be solved.

[0049] For the above issues, please refer to Figure 3 and Figure 7 The straightening push plate 41 includes a mounting plate 411 and a pushing plate 412 fixedly connected, wherein: the mounting plate 411 is fixed on the straightening push plate base 43, and the pushing plate 412 is inclined. When the elastic member 42 is in the initial state, there is a feeding gap 9 between the pushing plate 412 and the scraper 51. The feeding gap 9 is inclined relative to the horizontal plane. See [reference needed] Figure 9 The gap 9 allows the scraper 51 to cut the new fins 10 formed on the surface of the hollow profile 20 and bend the fins 10 to a preset initial angle.

[0050] See Figure 7 The mounting plate 411 is fixed to the straightening push plate seat 43 by screws and other locking parts to ensure the positional accuracy and structural rigidity of the straightening push plate 41 during operation, so that it can withstand the force of the new fins 10 on the straightening push plate during the cutting process, and transmit the force to the straightening push plate seat 43 and the straightening push plate shaft 44, thereby achieving the expected rotation and reset.

[0051] See Figure 9 and Figure 10 The plate 412 is tilted so that the discharge direction of the plate 412 matches that of the scraper 51 when it cuts the surface of the hollow profile 20 to form new fins 10, thus facilitating the smooth entry of the new fins 10 into the feed gap 9.

[0052] See Figure 7 and Figure 10 When the elastic element 42 is in its initial state, there is an infeed gap 9 between the push plate 412 and the scraper 51. This infeed gap 9 is the channel through which the new fins 10 formed by the scraper 51 cutting the surface of the hollow profile 20 enter the working area of ​​the straightening push plate 41. The infeed gap 9 is inclined relative to the horizontal plane, and its inclination direction matches the inclination direction of the push plate 412, together forming a guide channel. The new fins 10 formed by the scraper 51 during the cutting process can smoothly extend into the infeed gap 9, avoiding hard collisions or scratches between the new fins 10 and the straightening push plate 41 in the early stage of formation, protecting the integrity of the fins 10, and ensuring that they can be guided to the subsequent bending position.

[0053] When the new fin 10 extends into the inclined inlet gap 9, see Figure 7 and Figure 10 The inclined surface of the pushing plate 412 will exert a force on the fin 10, causing it to be bent at a preset initial angle in the early stage of formation, which helps to reduce the springback and deformation of the fin 10 and improve the consistency of the fin geometry.

[0054] In this embodiment, the fin spacing (pitch) is achieved by the feed displacement of the horizontal drive mechanism 3. The fin height is achieved by the stroke (cutting depth) of the cutting drive device 53. The fin thickness is achieved by adjusting the tilt angle of the assembly frame 52, i.e., the tilt angle of the blade 51, i.e., the preset cutting angle α between the oblique cutting depth direction and the horizontal direction.

[0055] In order to obtain fins 10 of different thicknesses, the cutting assembly 5 of this embodiment also includes a cutting depth angle adjustment mechanism 6 for adjusting the cutting angle of the blade 51.

[0056] See Figure 3 The cutting depth angle adjustment mechanism 6 includes a fixed bracket 61, a front axle seat 62, and an angle adjustment screw 63. The fixed bracket 61 and the front axle seat 62 are both fixed on the moving part of the horizontal drive mechanism 3. The front axle seat 62 is rotatably connected to the assembly frame 52 in the vertical plane. The fixed bracket 61 is located on the rear side of the assembly frame 52. The angle adjustment screw 63 is inclined and its lower end is movably connected to the rear end of the assembly frame 52. The angle adjustment screw 63 can be raised and lowered under the action of external force, thereby pulling or pushing the assembly frame 52 to rotate around the front axle seat 62 in the vertical plane, thereby adjusting the tilt angle of the assembly frame 52.

[0057] In this embodiment, the assembly frame 52 can rotate in a vertical plane around the front axle seat 62, thereby adjusting the cutting angle of the scraper 51. This adjustability allows the processing device to adapt to hollow profiles 20 of different materials and flexibly adjust the cutting parameters according to the required fin shape 10 and processing requirements. This improves the flexibility and precision of processing, enhances the applicability and processing quality of the equipment, and ensures the consistency and excellence of the fin 10 forming.

[0058] As an alternative implementation, see [link to implementation details]. Figure 3 The fixed bracket 61 includes a wing plate 611, an adjusting shaft 612, a pad 613, and an adjusting nut 614. The wing plates 611 are located on opposite sides of the rear end of the assembly frame 52. The adjusting shaft 612 is rotatably connected above the two wing plates 611, and the two pads 613 clamp the adjusting shaft 612. The angle adjusting screw 63 passes through the pad 613 and the adjusting shaft 612. The adjusting nut 614 is located on the upper side of the pad 613 and is threadedly connected to the angle adjusting screw 63. Tightening the adjusting nut 614 can drive the angle adjusting screw 63 to rise or fall. The wing plate 611 is provided with adjusting holes 66, which are spaced apart along the height direction of the wing plate 611. The locking element passes through the adjusting holes 66 to lock the wing plate 611 to the assembly frame 52.

[0059] See Figure 3The adjusting shaft 612 is rotatably connected above the two wing plates 611, serving as a support component for the angle adjusting screw 63 and ensuring that the angle adjusting screw 63 maintains a stable posture during lifting and lowering. Two pads 613 clamp the adjusting shaft 612, further enhancing its stability and providing a passage for the angle adjusting screw 63 to pass through. The adjusting nut 614 is located on the upper side of the pads 613 and is threadedly connected to the angle adjusting screw 63. The operator can rotate the adjusting nut 614 to raise and lower the angle adjusting screw 63, thereby causing the assembly frame 52 to rotate slightly around the front axle seat 62, achieving continuous adjustment of the cutting angle of the blade 51.

[0060] See Figure 3 The wing plate 611 is provided with adjustment holes 66 spaced apart along its height direction. The adjustment holes 66 provide multiple preset locking positions, allowing for quick positioning during coarse adjustment or at a specific angle. After the cutting angle is adjusted to the required position, the wing plate 611 can be securely locked to the assembly frame 52 by passing a locking member through the corresponding adjustment hole 66, thereby preventing the angle from shifting due to vibration or other external forces during machining.

[0061] As an alternative implementation, see [link to implementation details]. Figure 3 The cutting depth angle adjustment mechanism 6 also includes a diagonal brace 64 and a diagonal brace seat 65, wherein the diagonal brace seat 65 is fixed on the moving part of the horizontal drive mechanism 3, and the upper and lower ends of the diagonal brace 64 are hinged to the wing plate 611 and the diagonal brace seat 65 respectively.

[0062] The upper and lower ends of the diagonal brace 64 are hinged to the wing plate 611 and the diagonal brace seat 65, respectively. When the angle of the assembly frame 52 is adjusted, the diagonal brace 64 can accommodate the rotation of the assembly frame 52. Simultaneously, after the angle is set, the stable triangular structure formed by the diagonal brace 64, the diagonal brace seat 65, and the wing plate 611 provides rigid support for the assembly frame 52. During angle adjustment, the diagonal brace 64 can smoothly rotate with the assembly frame 52, and after the angle is locked, it provides stable support.

[0063] As an alternative implementation, see [link to implementation details]. Figure 2 As shown, the toothed fin 10 tube processing device of this embodiment also includes a top block 7, which is fixed to the front end of the lower support mold 2 and is used for axial positioning of the hollow profile 20; the toothed fin 10 tube processing device also includes a clamping and positioning mechanism, see [link to documentation]. Figure 3 The clamping and positioning mechanism is located on the cutting assembly 5 and is used to clamp the upper surface of the hollow profile 20. The clamping and positioning mechanism includes a pressure roller 81, a pressure roller bracket 82 and a pressure roller drive device 83, wherein: the pressure roller drive device 83 is fixed on the cutting assembly 5, the pressure roller 81 is connected to the output end of the pressure roller drive device 83 through the pressure roller bracket 82, and the pressure roller 81 is rotatably connected to the pressure roller bracket 82.

[0064] See Figure 2 and Figure 4 During the processing of the shovel-tooth fin 10 tube, the top block 7 can axially position the hollow profile 20, effectively preventing the hollow profile 20 from axially moving when the shovel 51 cuts, thereby ensuring the consistency of the spacing and positional accuracy of the formed fins 10.

[0065] See Figure 2 and Figure 4 The clamping and positioning mechanism, through the cooperation of the pressure roller 81, pressure roller bracket 82, and pressure roller drive device 83, applies stable downward pressure to the upper surface of the hollow profile 20, firmly pressing it onto the lower support mold 2. This structure effectively suppresses any vertical runout or vibration that may occur in the hollow profile 20 during cutting, ensuring stable processing by the scraper 51, thereby guaranteeing the height uniformity and shape consistency of the fins 10. While the pressure roller 81 clamps the hollow profile 20, the scraping assembly 5 can still feed horizontally, avoiding obstruction to the processing. This structure improves the positioning accuracy and stability of the hollow profile 20 during processing, and enhances the processing quality and production efficiency of the scraper-tooth fins 10.

[0066] In this embodiment, the scraper 51 moves at equal intervals along the axial direction of the hollow profile 20 via a horizontal drive mechanism, and the scraper 51 cuts in and out at an angle via a scraping drive device 53. During the cutting process, a floating connection structure buffers the cutting stress to protect the scraper 51, and the straightening push plate 41 dynamically abuts against the fins 10 during retraction and longitudinal retreat, solving the industry problems of easy deformation of hollow thin-walled tubes and easy collapse of fins 10.

[0067] Example 2 See Figures 2-10 A method for processing a toothed fin 10 tube, using the aforementioned toothed fin 10 tube processing device, the processing method includes: S1, supporting and positioning the hollow profile 20 on the lower support mold 2; S2, see Figure 10 The drive blade 51 feeds along the oblique cutting depth direction, and the blade 51 cuts into the surface of the hollow profile 20 at an angle, scraping up a layer of metal and bending it to form a new fin 10; and the straightening push plate 41 straightens the previous fin 10; S3, after the cutting reaches the set fin 10 height, the blade 51 retracts upward along the oblique cutting depth direction. During the retraction process, the straightening push plate 41 is lifted along the surface of the new fin 10, and resets under the action of the elastic member 42 after passing the new fin 10; S4, after the retraction is completed, the horizontal drive mechanism 3 drives the scraping and cutting assembly 5 to move a set distance in the retraction direction to prepare for the next scraping and cutting, wherein the set distance is the distance between adjacent fins 10.

[0068] For details, see Figures 2-10The following describes the process of forming a complete fin 10: The hollow metal profile is placed on the lower support mold 2, with the front end pressing against the top block 7 for axial positioning. Subsequently, the pressure roller drive device 83 drives the pressure roller 81 to press the hollow profile 20 downward. The shovel drive device 53 pushes the blade holder 54, the shovel blade 51, and the straightening push plate 41 to move obliquely downward as a whole through the floating connection structure (floating ball head 55).

[0069] Because there is a preset cutting angle between the oblique cutting depth direction and the profile, the scraper 51 cuts into the surface of the profile at an angle, scraping up a layer of metal and bending it upright to form fins 10. See also Figure 9 During the process of the metal being lifted and uprighted, the fin 10 will push up the straightening push plate 41 in front, and the straightening push plate 41 will straighten the previous fin 10. If a sudden change in resistance is caused by encountering a hard point in the material during the cutting process, the floating ball head 55 allows the scraper 51 to produce a small adaptive deflection (tool deflection) to absorb impact stress and prevent chipping.

[0070] After the cutting reaches the set depth (the height of the fin 10), the shovel cutting drive device 53 retracts, driving the shovel blade 51 to retract upwards along the oblique cutting depth direction.

[0071] At the moment the scraper 51 retracts, the friction between the scraper 51 and the surface of the fin 10 can easily cause the fin 10, which has not yet cooled and solidified at the root, to fall over. Since the straightening push plate 41 is rotatably connected to the bearing seat 43 through the straightening push plate shaft 44, when the scraper 51 retracts, the straightening push plate 41 rotates around the straightening push plate shaft and is lifted along the surface of the new fin 10. After passing the new fin 10, the straightening push plate 41 is reset under the action of the elastic element 42 to prevent the fin from falling over.

[0072] After the blade retraction is completed, the horizontal drive mechanism 3 drives the entire cutting assembly 5 to move backward a set distance (i.e., the fin spacing 10) along the profile, in preparation for the next cutting.

[0073] This process is repeated to create a continuous array of 10 fins with high verticality on the surface of the profile.

[0074] The specific features, structures, or characteristics described in this specification may be combined in any suitable manner in one or more embodiments or examples.

[0075] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0076] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A toothed finned tube processing device for processing fins into hollow profiles, characterized in that, It includes the machine tool bed, lower support mold, horizontal drive mechanism, uprighting push plate, elastic element, and cutting assembly with scraper blade, wherein: The lower support mold is fixed to the machine tool bed and is used to position the hollow profile; The horizontal drive mechanism is connected to the cutting assembly for driving the cutting assembly to feed and retract. The scraper is movably disposed along the oblique cutting depth direction to scrape the surface of the hollow profile and form fins, wherein the oblique cutting depth direction has a preset cutting angle with the horizontal direction; The straightening push plate is located in front of the feed direction of the cutting assembly. The straightening push plate is rotatably connected to the cutting assembly. The two ends of the elastic element are respectively connected to the cutting assembly and the straightening push plate. The straightening push plate can straighten the previous fin when the blade cuts out a new fin. The straightening push plate can be lifted along the surface of the new fin when the cutting assembly retracts, and reset under the action of the elastic element after passing the new fin.

2. The toothed finned tube processing device according to claim 1, characterized in that, The cutting assembly further includes an assembly frame, a cutting drive device, and a blade holder, wherein: The assembly frame is located on the moving part of the horizontal drive mechanism, the shovel cutting drive device is fixed on the assembly frame, the shovel cutting drive device is inclined relative to the horizontal plane, the output end of the shovel cutting drive device is movable along the inclined cutting depth direction, the blade holder is slidably connected to the assembly frame, and the shovel blade is fixed on the blade holder; The blade holder is connected to the output end of the cutting drive device via a floating connection structure, which is configured to allow the blade to generate adaptive deflection when subjected to cutting force.

3. The toothed finned tube processing apparatus according to claim 1 or 2, characterized in that, The toothed finned tube processing device further includes a straightening push plate seat, a straightening push plate shaft, and a bracket, wherein: A bearing seat is fixed on the shovel assembly, the straightening push plate seat is fixedly connected to the straightening push plate shaft, the straightening push plate shaft is rotatably connected to the bearing seat, and the straightening push plate is fixed on the straightening push plate seat; The bracket is fixed to the front side of the cutting assembly in the feed direction; The elastic element includes a pneumatic spring, which is inclined and its upper end is hinged to the bracket, and its lower end is movably connected to the straightening push plate shaft, for driving the straightening push plate to lift with the new fins when the cutting assembly retracts.

4. The toothed finned tube processing device according to claim 3, characterized in that, The straightening push plate includes a mounting plate and a pushing plate that are fixedly connected, wherein: The mounting plate is fixed on the straightening push plate base. The push plate is inclined. When the elastic element is in the initial state, there is a gap between the push plate and the scraper. The gap is inclined relative to the horizontal plane. The gap allows the scraper to cut the new fins formed on the surface of the hollow profile and insert them into the gap, and bend the fins to a preset initial angle.

5. The toothed finned tube processing device according to claim 2, characterized in that, The shovel assembly also includes a cutting depth angle adjustment mechanism for adjusting the cutting angle of the shovel blade; The depth-of-cut angle adjustment mechanism includes a fixed bracket, a front axle seat, and an angle adjustment screw, wherein: The fixed bracket and the front axle seat are both fixed on the moving part of the horizontal drive mechanism. The front axle seat is rotatably connected to the assembly frame in the vertical plane. The fixed bracket is located on the rear side of the assembly frame. The angle adjusting screw is inclined, and its lower end is movably connected to the rear end of the assembly frame. The angle adjusting screw can be raised and lowered under the action of external force, thereby pulling or pushing the assembly frame to rotate around the front axle seat in the vertical plane, thereby adjusting the tilt angle of the assembly frame.

6. The toothed finned tube processing apparatus according to claim 5, characterized in that, The fixed bracket includes a wing plate, an adjusting shaft, a pad, and an adjusting nut, wherein: The wing plates are located on opposite sides at the rear end of the assembly frame, the adjusting shaft is rotatably connected above the two wing plates, and the two pads clamp the adjusting shaft; The angle adjusting screw passes through the pad and the adjusting shaft. The adjusting nut is located on the upper side of the pad and is threadedly connected to the angle adjusting screw. Tightening the adjusting nut can drive the angle adjusting screw to rise or fall. The wing plate is provided with adjustment holes, which are spaced apart along the height direction of the wing plate. The locking member passes through the adjustment holes to lock the wing plate to the assembly frame.

7. The toothed finned tube processing apparatus according to claim 6, characterized in that, The cutting depth angle adjustment mechanism also includes a tie rod and a tie seat, wherein: The inclined support is fixed to the moving part of the horizontal drive mechanism, and the upper and lower ends of the inclined rod are respectively hinged to the wing plate and the inclined support.

8. The toothed finned tube processing apparatus according to claim 1, characterized in that, The toothed finned tube processing device also includes a top block, which is fixed to the front end of the lower support mold and is used for axial positioning of the hollow profile. The toothed finned tube processing device also includes a clamping and positioning mechanism, which is located on the cutting assembly and is used to clamp the upper surface of the hollow profile. The clamping and positioning mechanism includes a pressure roller, a pressure roller bracket, and a pressure roller drive device, wherein: The pressure roller drive device is fixed on the cutting assembly. The pressure roller is connected to the output end of the pressure roller drive device through the pressure roller bracket. The pressure roller is rotatably connected to the pressure roller bracket.

9. The toothed finned tube processing apparatus according to claim 1, characterized in that, The horizontal drive mechanism includes a horizontal drive device, a nut, a horizontal lead screw, and a horizontal sliding guide structure, wherein: The horizontal drive device is fixed to the machine tool bed and is connected to the horizontal lead screw drive, used to drive the horizontal lead screw to rotate forward or in reverse. The nut serves as the moving part of the horizontal drive mechanism. The nut is sleeved on the horizontal lead screw to form a lead screw and nut pair. The cutting assembly is slidably connected to the machine tool bed through a horizontal sliding guide structure.

10. A method for processing toothed finned tubes, characterized in that, Using the toothed finned tube processing apparatus as described in any one of claims 1-9, the processing method includes: S1. Position the hollow profile support on the lower support mold; S2. Drive the scraper to feed along the oblique cutting depth direction. The scraper cuts into the surface of the hollow profile in an oblique posture, scrapes up a layer of metal and bends it to form a new fin. The straightening push plate straightens the previous fin. S3. After the cutting reaches the set fin height, the scraper retracts upward along the oblique cutting depth direction. During the retraction process, the straightening push plate is lifted along the new fin surface and resets under the action of the elastic element after passing the new fin. S4. After the blade retraction is completed, the horizontal drive mechanism drives the cutting assembly to move a set distance in the blade retraction direction to prepare for the next cutting, wherein the set distance is the spacing between adjacent fins.

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