Heating and ventilation pipeline production device

Abstract

The invention relates to the technical field of forming machine tools, in particular to a heating and ventilation pipeline production device which comprises a machining frame, a machining table is fixed to the top of the machining frame, and a bending structure is installed on the machining table; the bending structure rotates at a horizontal angle to bend the heating and ventilation pipeline at an angle of 300 degrees; a feeding structure is installed on the right side face of the machining table. Automatic feeding and bending are linked, the feeding structure achieves automatic feeding through 90-degree circulating rotation and is in seamless connection with the bending structure, manual intervention is reduced, the production takt is greatly improved, an electric hydraulic rod drives feeding and bending actions at the same time, a transmission chain is simplified, the response speed is increased, heating and cleaning are rapid, and the production efficiency is improved. The electromagnetic heater can complete pipeline heating within seconds, compared with a traditional flame heating or resistance furnace, the efficiency is higher, the cleaning brush is directly linked to remove zinc oxide powder after heating, secondary treatment is avoided, the overall production efficiency is improved by 30%-50%, and the device is suitable for large-scale continuous production.

Description

Technical Field

[0001] The present invention relates to the technical field of forming machine tools, and particularly relates to a production device for heating and ventilation pipes. Background Art

[0002] In traditional heating and ventilation pipe processing, the feeding process relies on manual operation. It is necessary to frequently carry the pipes to the bending equipment, which has the problems of high labor intensity and low production efficiency. In particular, it is difficult to meet the requirements of mass production. However, existing bending equipment can usually only complete single-angle bending. If secondary bending or complex angle adjustment is required, it is necessary to manually reposition the pipe, which is cumbersome to operate and difficult to guarantee the accuracy, resulting in an extended production cycle.

[0003] Therefore, those skilled in the art have provided a production device for heating and ventilation pipes to solve the problems raised in the above background art. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides: A production device for heating and ventilation pipes, comprising: a processing frame, a processing table is fixed on the top of the processing frame, and a bending structure is installed on the processing table; The bending structure rotates at a horizontal angle to perform 300° angle bending on the heating and ventilation pipes; A feeding structure is installed on the right side surface of the processing table, and the feeding structure rotates 90° circularly to automatically feed the heating and ventilation pipes to the bending structure; A heating unit for heat treatment of the heating and ventilation pipes is assembled between the feeding structure and the processing table, and the heating unit performs electromagnetic induction heat conduction heating on the heating and ventilation pipes passing through it; A turning unit is arranged on the right side of the feeding structure and installed on the processing table. After the turning unit moves to the left, it pushes the heating and ventilation pipes in the feeding structure to the inside of the bending structure.

[0005] Preferably: The bending structure includes a bending arc plate arranged on the surface of the processing table, and a load-bearing rod rotating inside the processing table is fixedly installed at the bottom of the bending arc plate. A flat belt pulley one and a spur gear are fixedly installed at the position of the load-bearing rod inside the processing table; A smooth belt is wound around the inside of the flat belt pulley one; One side of the spur gear is meshed with a spur gear plate; One end of the spur gear plate is installed with an electro-hydraulic rod arranged inside the processing table.

[0006] Preferably: A limiting arc plate for restricting the heating and ventilation pipes is fixedly arranged on the surface of one end of the bending arc plate, and a positioning arc plate is separately arranged on one side of the limiting arc plate. A displacement plate is fixedly installed at the bottom of the positioning arc plate, and an electric push rod one is assembled between the displacement plate and the limiting arc plate.

[0007] Preferably, at the inner side of one end of the smooth belt away from the flat belt pulley 1, a flat belt pulley 2 is wound around, and a shaft rod is fixedly installed at the center of the flat belt pulley 2. The top end of the shaft rod rotatably penetrates through the top of the processing table and is fixedly installed with a transmission disc. On the outer side of the transmission disc, a top shaft frame fixedly installed on the surface of the processing table is provided. Inside the top shaft frame, a positioning top frame fixedly installed on the surface of the processing table is provided. Inside the positioning top frame, two groups of sliding rods are movably arranged. One end of each sliding rod is fixed with a stable arc plate for restricting the HVAC pipeline, and the other end of the sliding rod is fixed with an inclined panel.

[0008] Preferably, the feeding structure includes a fixed frame fixedly installed on the side wall of the processing table. At one end of the fixed frame away from the processing table, a shaft ring frame is rotatably assembled. Along the middle part of the inner side of the shaft ring frame, inclined arc plates are symmetrically fixed. On the outer edge of the shaft ring frame, a straight tooth groove is formed. At the bottom of the straight tooth groove, a straight tooth frame is engaged. One end of the straight tooth frame is fixed with a support frame, and the end of the support frame away from the straight tooth frame is fixedly assembled at one end of a straight tooth plate.

[0009] Preferably, electric push rods 2 are assembled on the inner sides of the two inclined arc plates respectively. At one end of the electric push rod 2 away from the inclined arc plate, a clamping arc plate is installed. An elastic cloth made of an elastic material is arranged between the clamping arc plate and the inclined arc plate.

[0010] Preferably, the turning unit includes a bottom rail frame fixedly installed at the bottom of the processing table. Inside the bottom rail frame, an inner moving frame is movably arranged. A screw rod is helically driven inside the inner moving frame. One end of the screw rod rotates and penetrates through the outside of the bottom rail frame and is connected with a servo motor 1. At the top of one end of the inner moving frame, a rotating top frame is rotatably assembled. Inside the rotating top frame, an electric push rod 3 is installed. At the output end of the electric push rod 3, an inclined angle plate is fixedly assembled. On both sides of one end of the inclined angle plate away from the electric push rod 3, inner support plates are provided. On the outer side wall of the inner support plate, a limiting rod is fixed. The inner support plate is slidably restricted inside the rotating top frame through the limiting rod.

[0011] Preferably, at the right end of the rotating top frame, a positioning rod is fixed. On the outer wall of the positioning rod, a worm gear is fixedly assembled. The worm gear is engaged with a worm. The bottom of the worm is connected with a servo motor 2 fixedly installed on the inner moving frame.

[0012] Preferably, the heating unit includes a waste box fixedly installed on the surface of the fixed frame. At the top end of the waste box, a collection cylinder is connected in a penetrating manner. Inside the collection cylinder, a cleaning brush for cleaning the surface of the HVAC pipeline is assembled in a ring shape. On one side of the collection cylinder, an electromagnetic heater is assembled.

[0013] Preferably: A loading ramp is fixedly assembled on one side of the processing rack, a stretching groove is provided inside the loading ramp, and a stretching rack corresponding to the shape of the loading ramp is movably arranged inside the stretching groove.

[0014] The technical effects and advantages of the present invention: In the present invention, automatic loading and bending are linked. The loading structure realizes automatic loading through 90° circular rotation, seamlessly connects with the bending structure, reduces manual intervention, and greatly improves the production rhythm. The electro-hydraulic rod simultaneously drives the loading and bending actions, simplifies the transmission chain, improves the response speed, and enables rapid heating and cleaning. The electromagnetic heater can complete the heating of the pipeline within seconds, with higher efficiency compared to traditional flame heating or resistance furnaces. After heating, it directly drives the cleaning brush to remove zinc oxide powder, avoiding secondary treatment. The overall production efficiency is increased by 30% - 50%, and it is suitable for large-scale continuous production.

[0015] In the present invention, the processing precision and quality are improved. Dynamic clamping and positioning: During bending, the stable arc plate 315 automatically clamps the pipeline through springs and inclined panels to prevent displacement and ensure the bending angle is accurate. The bending error of 300° is ≤ ±1°. The rotation unit is fixed from the inside of the pipeline through the inner support plate, and the angle is adjusted in combination with the worm and worm gear. The position accuracy of the secondary bending is high. Uniform heating: The electromagnetic induction heating 702 makes the whole pipeline heated evenly, avoiding local overheating resulting in a decline in material properties or deformation. Effect: The bending angles of the finished pipelines are consistent, the surface has no mechanical damage, and the qualified rate is ≥ 98%.

[0016] In the present invention, energy consumption and material loss are reduced. Electromagnetic heating energy saving: The thermal efficiency of electromagnetic induction heating reaches more than 90%, saving 40% - 50% of energy compared to resistance heating, and there is no open flame, which is safe, environmentally friendly. Oxide powder recovery: The cleaning brush and waste box automatically collect zinc oxide powder, reducing material waste and facilitating centralized treatment. Reducing die wear: After heating, the plasticity of the pipeline is enhanced, reducing the force-bearing wear of the bending arc plate and extending the die life. The comprehensive energy consumption is reduced by 20% - 30%, and the maintenance cost is reduced. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of a heating and ventilation pipeline production device provided by the present application; Figure 2 It is a schematic top view structural diagram of a heating and ventilation pipeline production device provided by the present application; Figure 3 It is a schematic front view structural diagram of a heating and ventilation pipeline production device provided by the present application; Figure 4 It is a schematic disassembled structural diagram of a heating and ventilation pipeline production device provided by the present application; Figure 5 It is a heating and ventilation pipeline production device provided by the present applicationFigure 4 Schematic diagram of the structure at position A; Figure 6 Schematic diagram of the structure of a servo motor in a heating and ventilation pipeline production device provided by the present application; Figure 7 Schematic diagram of the structure of a collecting cylinder in a heating and ventilation pipeline production device provided by the present application; Figure 8 Schematic diagram of the structure of an electromagnetic heater in a heating and ventilation pipeline production device provided by the present application; Figure 9 A heating and ventilation pipeline production device provided by the present application Figure 8 Schematic diagram of the structure at position B; Figure 10 A heating and ventilation pipeline production device provided by the present application Figure 7 Schematic diagram of the structure at position C; Figure 11 A heating and ventilation pipeline production device provided by the present application Figure 7 Schematic diagram of the structure at position D.

[0018] In the figure: 1. Processing frame; 2. Processing table; 3. Bending structure; 301. Bending arc plate; 302. Load-bearing rod;  303. Straight gear; 304. Straight tooth plate; 305. Rail plate; 306. Limiting arc plate; 307. Positioning arc plate; 308. Shifting plate; 309. Electric push rod 1; 310. Flat belt pulley 1; 311. Smooth belt; 312. Flat belt pulley 2; 313. Shaft rod; 314. Top shaft frame; 315. Stable arc plate; 316. Slide rod; 317. Transmission disc; 318. Inclined panel; 319. Positioning top frame; 320. Electric hydraulic rod; 4. Loading structure; 401. Fixed frame; 402. Shaft collar frame; 403. Inner ring groove; 404. Straight tooth groove; 405. Straight tooth frame; 406. Support frame; 407. Inclined arc plate; 408. Electric push rod 2; 409. Elastic cloth; 410. Clamping arc plate; 5. Turning unit; 501. Bottom rail frame; 502. Inner moving frame; 503. Screw; 504. Servo motor 1; 505. Rotating top frame; 506. Positioning rod; 507. Worm gear; 508. Worm; 509. Servo motor 2; 510. Inner support plate; 511. Limiting rod; 512. Inclined angle plate; 513. Electric push rod 3; 6. Load-bearing frame; 7. Heating unit; 701. Collecting cylinder; 702. Electromagnetic heater; 703. Waste bin; 704. Cleaning brush; 8. Tensile groove; 9. Tensile frame; 10. Stock storage rack; 11. Controller; 12. Loading inclined frame. Detailed implementation manners

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The examples of the present invention are given for purposes of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application, and to enable those of ordinary skill in the art to understand the invention and design various embodiments with various modifications suitable for specific purposes.

[0020] Example 1. Please refer to Figures 1 to 4 , in this embodiment, a production device for heating and ventilation pipes is provided. It includes: a processing frame 1, a processing table 2 is fixed on the top of the processing frame 1, and a bending structure 3 is installed on the processing table 2; The bending structure 3 rotates at a horizontal angle to bend the heating and ventilation pipe at an angle of 300°; the bending structure 3 is used for bending processing during the production of heating and ventilation pipes; A feeding structure 4 is installed on the right side of the processing table 2. The feeding structure 4 rotates cyclically at 90° to automatically feed the heating and ventilation pipe to the bending structure 3; the feeding structure 4 is used for automatic feeding during the bending production of the heating and ventilation pipe. When the bending structure 3 passes through the feeding structure 4 during feeding, the bending processing efficiency of the heating and ventilation pipe can be increased, and the bending structure 3 cooperates with the feeding structure 4 to automatically bend and process the heating and ventilation pipe; A heating unit 7 for heat treatment of the heating and ventilation pipe is assembled between the feeding structure 4 and the processing table 2. The heating unit 7 conducts electromagnetic induction heat conduction heating on the heating and ventilation pipe passing through it; after the heating unit 7 heats the heating and ventilation pipe, white zinc oxide powder will appear on the surface of the heating and ventilation pipe. After the heating and ventilation pipe is pushed through the heating unit 7, the white zinc oxide powder can be cleaned and collected; A turning unit 5 is installed on the processing table 2 on the right side of the feeding structure 4. After the turning unit 5 moves to the left, the heating and ventilation pipe in the feeding structure 4 is pushed to the inside of the bending structure 3; the turning unit 5 has an axial rotation action. When the turning unit 5 clamps and fixes the inside of the heating and ventilation pipe and undergoes an axial rotation action, the angle inside the pipe can be penetrated at the inside of the bending structure 3. After the heating and ventilation pipe is bent once by the bending structure 3, after the turning unit 5 adjusts the angle of the heating and ventilation pipe, the bending angle of the second time can be adjusted; On one side of the processing frame 1, a feeding inclined frame 12 is fixedly assembled, and a stretching groove 8 is formed inside the feeding inclined frame 12. A stretching frame 9 corresponding to the shape of the feeding inclined frame 12 is movably arranged inside the stretching groove 8. The feeding inclined frame 12 is used for storing HVAC pipes. A storage rack 10 for vertically storing HVAC pipes is assembled through the top of the feeding inclined frame 12. And a load-bearing frame 6 is fixedly installed at the bottom of the feeding inclined frame 12. A controller 11 is installed on the outer wall of the processing frame 1; Embodiment 2. Please refer to Figures 4 to 6 , in this embodiment, a bending structure 3 in an HVAC pipe production device is provided; The bending structure 3 includes a bending arc plate 301 arranged on the surface of the processing table 2. A load-bearing rod 302 that rotates inside the processing table 2 is fixedly installed at the bottom of the bending arc plate 301. A first flat belt pulley 310 and a spur gear 303 are fixedly installed at the position of the load-bearing rod 302 inside the processing table 2; A smooth belt 311 is wound around the inside of the first flat belt pulley 310. A spur gear 303 meshes with a spur gear plate 304 on one side. One end of the spur gear plate 304 is installed with an electro-hydraulic rod 320 arranged inside the processing table 2. The output end of the electro-hydraulic rod 320 is fixedly set with the spur gear plate 304, and the side of the electro-hydraulic rod 320 away from the output end is fixedly installed inside the processing table 2. When the electro-hydraulic rod 320 extends and pushes, it moves the spur gear plate 304. Through the spur gear plate 304, the feeding structure 4 can be driven to rotate and adjust in a 90° cycle to complete the automatic feeding operation of the HVAC pipe; A rail groove is formed inside the spur gear plate 304, and a rail plate 305 fixedly installed on the inner wall of the processing table 2 is movably arranged inside the rail groove of the spur gear plate 304; A limiting arc plate 306 for restricting the HVAC pipe is fixedly arranged on the surface of one end of the bending arc plate 301. A positioning arc plate 307 is separated on one side of the limiting arc plate 306. A displacement adjusting plate 308 is fixedly installed at the bottom of the positioning arc plate 307. An electric push rod 309 is assembled between the displacement adjusting plate 308 and the limiting arc plate 306. When the electric push rod 309 extends and adjusts, the distance between the positioning arc plate 307 on the displacement adjusting plate 308 and the limiting arc plate 306 can be adjusted, which is beneficial to taking out the bent HVAC pipe; One end of the smooth belt 311 away from the first flat belt pulley 310 is wound around a second flat belt pulley 312 inside. A shaft rod 313 is fixedly installed at the center of the second flat belt pulley 312. The top end of the shaft rod 313 rotates through the top of the processing table 2 and is fixedly installed with a transmission disk 317; On the outer side of the driving disk 317, there is a top shaft frame 314 fixedly installed on the surface of the processing table 2. Inside the top shaft frame 314, there is a positioning top frame 319 fixedly installed on the surface of the processing table 2. Inside the positioning top frame 319, two sets of sliding rods 316 are movably arranged. One end of each sliding rod 316 is fixed with a stabilizing arc plate 315 for restricting the HVAC pipeline, and the other end of the sliding rod 316 is fixed with an inclined panel 318. A vertical rod in contact with the inclined panel 318 is fixed on the surface of the driving disk 317, and the vertical rod can rotate with the driving disk 317. When the driving disk 317 rotates and passes through the vertical rod, a force can be applied to the inclined panel 318. After the inclined panel 318 is stressed, it squeezes the sliding rod 316, causing the sliding rod 316 to push the stabilizing arc plate 315 closer to the HVAC penetration for stable positioning. Springs sleeved on the outer sides of the sliding rods 316 are arranged on both sides of the sliding rod 316 located in the positioning top frame 319.

[0021] Example 3. Please refer to Figure 9 、 Figure 10 , in this example, a feeding structure 4 in a HVAC pipeline production device is provided; The feeding structure 4 includes a fixed frame 401 fixedly installed on the side wall of the processing table 2. One end of the fixed frame 401 away from the processing table 2 is rotatably assembled with a collar frame 402. Inside the collar frame 402, inclined arc plates 407 are symmetrically fixed along the middle; A straight tooth groove 404 is formed on the outer edge of the collar frame 402. A straight tooth rack 405 is engaged with the bottom of the straight tooth groove 404. One end of the straight tooth rack 405 is fixed with a support frame 406, and the end of the support frame 406 away from the straight tooth rack 405 is fixedly assembled at one end of the straight tooth plate 304. An inner ring groove 403 is formed inside the collar frame 402, and the collar frame 402 is slidably arranged on the fixed frame 401 through the inner ring groove 403; When the straight tooth plate 304 moves, it synchronously moves the support frame 406. The moving support frame 406 moves the straight tooth rack 405. Through the engagement of the straight tooth rack 405 with the straight tooth groove 404 of the collar frame 402, the collar frame 402 can be rotated along the fixed frame 401 through the inner ring groove 403, and the feeding structure 4 can be rotated in a 90° cycle to automatically feed the HVAC pipeline; Electric push rods II 408 are assembled on the inner sides of the two inclined arc plates 407. A clamping arc plate 410 is installed at one end of the electric push rod II 408 away from the inclined arc plate 407. The clamping arc plate 410 can clamp and position the HVAC pipeline automatically fed into the inside of the clamping arc plate 410 through the extension of the electric push rod II 408. An elastic cloth 409 made of an elastic material is arranged between the clamping arc plate 410 and the inclined arc plate 407.

[0022] Example 4. Please refer to Figure 7 、 Figure 10 、Figure 11 , in this embodiment, a turning unit 5 in a heating and ventilation pipeline production device is provided; The turning unit 5 includes a bottom rail frame 501 fixedly installed at the bottom of the processing table 2, and an inner moving frame 502 is movably arranged inside the bottom rail frame 501. A screw rod 503 is arranged inside the inner moving frame 502 in a screw drive manner; one end of the screw rod 503 rotatably penetrates the outside of the bottom rail frame 501 and is connected with a first servo motor 504; the first servo motor 504 is fixedly installed on the outer wall of the processing table 2, and the first servo motor 504 is used to actively drive the screw rod 503 to rotate. When the screw rod 503 rotates, the inner moving frame 502 can be driven by screw drive, so that the inner moving frame 502 moves along the screw rod 503 inside the bottom rail frame 501 to extend and adjust the length position of the inner moving frame 502; One end of the top of the inner moving frame 502 is rotatably assembled with a rotating top frame 505. An electric push rod three 513 is installed inside the rotating top frame 505. The output end of the electric push rod three 513 is fixedly assembled with an inclined angle plate 512. Inner support plates 510 are arranged on both sides of the end of the inclined angle plate 512 away from the electric push rod three 513; a limiting rod 511 is fixed on the outer side wall of the inner support plate 510, and the inner support plate 510 is slidably limited inside the rotating top frame 505 through the limiting rod 511; when the electric push rod three 513 extends and moves, the inclined angle plate 512 can be extended and moved between the two inner support plates 510 to expand the two inner support plates 510, and the two inner support plates 510 located inside the heating and ventilation pipeline can be used to clamp and fix the heating and ventilation pipeline from the inside, and the moving inner moving frame 502 can push the positioned heating and ventilation pipeline to the position of the bending structure 3; A positioning rod 506 is fixed at the right end of the rotating top frame 505, and a worm gear 507 is fixedly assembled on the outer wall of the positioning rod 506. The worm gear 507 is engaged with a worm 508, and the bottom of the worm 508 is connected with a second servo motor 509 fixedly installed on the inner moving frame 502; the second servo motor 509 is used to actively drive the worm 508 to rotate. After the worm 508 rotates, it drives the worm gear 507 through meshing. After the worm gear 507 rotates, the positioning rod 506 can drive the rotating top frame 505 to rotate annularly on the inner moving frame 502, so as to adjust the annular angle of the heating and ventilation pipeline after secondary bending.

[0023] Example Five, please refer to Figures 6 to 8 , in this embodiment, a heating unit 7 in a heating and ventilation pipeline production device is provided; The heating unit 7 includes a waste box 703 fixedly installed on the surface of the fixed frame 401. The top end of the waste box 703 is connected through a through hole with a collection cylinder 701, and a cleaning brush 704 for cleaning the surface of the heating and ventilation pipeline is annularly assembled inside the collection cylinder 701; An electromagnetic heater 702 is installed on one side of the collecting cylinder 701; the HVAC pipe is pushed and moved to the inside of the electromagnetic heater 702 through the turning unit 5, and is evenly heated by the electromagnetic heater 702. The white zinc oxide powder generated by the heating can rotate along the inside of the cleaning brush 704 after the turning unit 5 rotates. The oxidized white zinc oxide powder is cleaned by the cleaning brush 704, and the oxidized white zinc oxide powder that falls on the inside of the collecting cylinder 701 is concentrated and stored in the inside of the waste box 703.

[0024] According to the above embodiment, the working principle of the present invention is: The automatic feeding mechanism 4 is activated, and the controller 11 activates the electric hydraulic rod 320 to push the spur plate 304 to move; the spur plate 304 drives the spur rack 405 through the support frame 406, driving the spur tooth groove 404 of the shaft ring frame 402, causing it to rotate 90 degrees along the fixed frame 401; The inclined arc plate 407 rotates to a horizontal position along with the shaft collar frame 402, and the HVAC pipe slides from the storage rack 10 into the inner side of the clamping arc plate 410; the electric push rod 2 408 pushes the clamping arc plate 410 to clamp the pipe, and the elastic cloth 409 is cushioned and anti-slip; the heating and cleaning heating unit 7 processes, and the turning unit 5 pushes the pipe to the left so that it passes through the electromagnetic heater 702 for induction heating; the white zinc oxide powder generated by heating adheres to the surface of the pipe; as the pipe continues to move, the cleaning brush 704 scrapes off the powder, and the debris falls into the collection cylinder 701 and is stored in the waste bin 703; the bending structure 3 is executed once, and the turning unit 5 pushes the pipe into the inner side of the bending arc plate 301; The electric hydraulic rod 320 pushes the spur plate 304, driving the spur gear 303, which drives the load-bearing rod 302 to rotate, and the bending arc plate 301 rotates horizontally 300 degrees to complete a bend; synchronous clamping, the flat pulley 1 310 drives the flat pulley 2 312 through the smooth belt 311, and the transmission plate 317 rotates; the vertical rod of the transmission plate 317 pushes the inclined plate 318, and the sliding rod 316 squeezes the spring and pushes the stable arc plate 315 to clamp the pipe; The secondary bending angle adjustment and rotation unit 5 is in motion, the servo motor 1 504 drives the screw 503, the inner moving frame 502 moves to the left along the bottom rail frame 501, and the pipe is pushed to the bending structure 3; the electric push rod 3 513 pushes the bevel plate 512, opens the inner support plate 510, and fixes it from the inside of the pipe; for angle adjustment, the servo motor 2 509 drives the worm 508, and the worm gear 507 drives the positioning rod 506, and the rotating top frame 505 rotates axially to adjust the secondary bending angle of the pipe; the bending structure 3 repeats the bending action to complete the secondary processing; the electric push rod 1 309 pushes the adjustment plate 308 to move the positioning arc plate 307 away from the limiting arc plate 306, expands the gap and takes out the finished product; all structures are reset, and the loading structure 4 rotates 90° to enter the next cycle; Feeding structure 4, consisting of an automatic feeding structure 4, a fixed frame 401, a collar frame 402, an inclined arc plate 407, a straight tooth groove 404, a straight tooth frame 405, an electric push rod II 408, and a clamping arc plate 410; The working process is as follows: when the straight tooth plate 304 moves, the straight tooth plate 304 drives the support frame 406 and the straight tooth frame 405 to move. The straight tooth frame 405 meshes with the straight tooth groove 404 of the collar frame 402, causing the collar frame 402 to rotate 90° on the fixed frame 401 through the inner ring groove 403, realizing cyclic feeding; The electric push rod II 408 pushes the clamping arc plate 410 to clamp the HVAC pipeline in cooperation with the elastic cloth 409 to ensure the stability of the pipeline during the feeding process; Heating unit 7, consisting of a pipeline heating and cleaning structure, a collection cylinder 701, an electromagnetic heater 702, a cleaning brush 704, and a waste box 703; The electromagnetic heater 702 directly heats the metal pipeline through high-frequency alternating current and electromagnetic induction effect, without contact with flames or resistance wires. The physical process is as follows: High-frequency current generation: The inverter circuit inside the electromagnetic heater 702 converts the industrial frequency alternating current of 50 / 60 Hz into high-frequency alternating current, usually 10 - 50 kHz; Alternating magnetic field generation: When the high-frequency current passes through the copper winding of the induction coil, a high-intensity alternating magnetic field is formed around the coil; Eddy current thermal effect: When the metal pipeline conductive material enters the magnetic field area, eddy currents are induced on the surface of the pipeline by the magnetic field; Due to the resistance effect of the metal, Joule heat I²R loss is generated inside the pipeline, causing the pipeline to heat up rapidly; Hysteresis loss only occurs for ferromagnetic materials. If the pipeline is a ferromagnetic material such as carbon steel, the alternating magnetic field will also cause the magnetic domains inside the material to flip repeatedly, generating additional heat due to hysteresis loss; Specific design of the electromagnetic heater 702: The special design of the electromagnetic heater 702 is as follows: Heating target: HVAC pipelines are usually made of carbon steel or stainless steel; Integrated position: Located between the feeding structure 4 and the processing table 2, the pipeline is pushed through the heater by the turning unit 5; Cleaning linkage: The white zinc oxide powder generated by the oxidation of the pipeline surface after heating is automatically removed by the subsequent cleaning brush 704; Key components: Induction coil, annularly arranged inside the heater to ensure that the pipeline is evenly covered by the magnetic field when passing through; When the coil passes through high-frequency current, the surface of the pipeline is quickly heated to the bending temperature. Usually, carbon steel is heated to 700 - 900 °C; Cooling system: High-frequency current will cause the coil to heat up, and a water-cooled or air-cooled system is equipped to prevent overheating; Electromagnetic shielding: The outer shell of the heater uses a metal shielding layer to avoid interference of high-frequency magnetic fields with other electronic devices such as the controller 11; Control logic of the heating process: Temperature regulation: The heating temperature is controlled by adjusting the frequency or power of the high-frequency current. The higher the frequency, the shallower the heating depth, which is suitable for thin-walled pipelines; An infrared temperature sensor is equipped to provide real-time temperature feedback; Synchronous trigger: When the turning unit 5 pushes the pipeline into the heating area, the controller 11 automatically starts the electromagnetic heater 702; The heating stops after the pipeline is removed to avoid energy waste; Working process: The transfer unit 5 pushes the pipeline to the inside of the electromagnetic heater 702, and electromagnetic induction heat conduction heats the pipeline to make it easy to bend; the zinc oxide powder generated by heating rotates with the pipeline and is brushed off by the cleaning brush 704, and falls into the waste box 703 through the collection cylinder 701; the bending structure 3 consists of a 300° angle bending structure 3, a bending arc plate 301, a load-bearing rod 302, a flat pulley one 310, a spur gear 303, a spur gear plate 304, an electric hydraulic rod 320, a limiting arc plate 306, a positioning arc plate 307, and an electric push rod one 309; Working process: The electric hydraulic rod 320 pushes the spur gear plate 304 to move, the spur gear plate 304 meshes with the spur gear 303, drives the load-bearing rod 302 and the bending arc plate 301 to rotate, and realizes a 300° bend; The flat pulley one 310 drives the flat pulley two 312 and the shaft rod 313 to rotate through the smooth belt 311. When the transmission disc 317 at the top of the shaft rod 313 rotates, the vertical rod pushes the inclined panel 318, so that the sliding rod 316 drives the stable arc plate 315 to position the pipeline; The electric push rod one 309 adjusts the distance between the positioning arc plate 307 and the limiting arc plate 306 to facilitate the removal of the bent pipeline; Fourth, the transfer unit 5 consists of a pipeline angle adjustment and pushing structure, a bottom rail frame 501, an inner moving frame 502, a screw rod 503, a servo motor one 504, a rotating top frame 505, an electric push rod three 513, an inclined angle plate 512, an inner support plate 510, a servo motor two 509, a worm 508, and a worm gear 507; Working process: The servo motor one 504 drives the screw rod 503 to rotate, so that the inner moving frame 502 moves inside the bottom rail frame 501, and pushes the pipeline to the inside of the bending structure 3; The electric push rod three 513 pushes the inclined angle plate 512, so that the inner support plate 510 expands and clamps the pipeline from the inside; The servo motor two 509 drives the worm 508 to rotate, the worm 508 meshes with the worm gear 507, drives the rotating top frame 505 to rotate, and adjusts the pipeline angle for secondary bending; Fifth, the auxiliary structure includes a feeding and storage feeding inclined frame 12 and a storage rack 10. The feeding inclined frame 12 is used to store HVAC pipelines, the storage rack 10 stores pipelines vertically, and the stretching frame 9 can move in the stretching groove 8 to adapt to different storage capacities; The load-bearing frame 6 supports the feeding inclined frame 12 to ensure the stability of the device; Summary of the working process: Feeding, the pipeline is stored in the feeding inclined frame 12 and the storage rack 10, and the feeding structure 4 rotates through 90° in a cycle to automatically transport the pipeline to the heating unit 7; Heating, the electromagnetic heater 702 heats the pipeline, and the cleaning brush 704 cleans the oxidation powder; First bending, the transfer unit 5 pushes the heated pipeline to the bending structure 3, and the bending arc plate 301 rotates to realize a 300° bend, and the stable arc plate 315 positions the pipeline; Angle adjustment, the transfer unit 5 clamps the pipeline, and the rotating top frame 505 rotates to adjust the angle; Second bending, according to the adjusted angle, the bending structure 3 bends again to complete the processing; Discharging, the electric push rod one 309 adjusts the positioning arc plate 307 to take out the bent pipeline.

[0025] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art and related fields based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention. Structures, devices, and operation methods not specifically described and explained in the present invention shall be implemented by conventional means in the art unless otherwise specified and limited.

Claims

1. A production device for heating and ventilation pipes, characterized in that, Including: A processing rack, a processing table is fixed on the top of the processing rack, and a bending structure is installed on the processing table; The bending structure rotates at a horizontal angle to bend the HVAC pipeline at an angle of 300°; A feeding structure is installed on the right side surface of the processing table, and the feeding structure rotates circularly at 90° to automatically feed the HVAC pipeline to the bending structure; A heating unit for heating treatment of the HVAC pipeline is assembled between the feeding structure and the processing table, and the heating unit conducts electromagnetic induction heat conduction heating on the HVAC pipeline passing through it; On the right side of the feeding structure, there is a turning unit installed on the processing table. After the turning unit moves to the left, it pushes the HVAC pipeline in the feeding structure to the inside of the bending structure.

2. The production device of a heating and ventilation pipeline according to claim 1, characterized in that, The bending structure includes a bending arc plate arranged on the surface of the processing table, and a load-bearing rod rotatably located inside the processing table is fixedly installed at the bottom of the bending arc plate. A flat belt pulley one and a spur gear are fixedly installed inside the processing table where the load-bearing rod is located; A smooth belt is wound around the inside of the flat belt pulley one; One side of the spur gear meshes with a spur gear plate; One end of the spur gear plate is installed with an electro-hydraulic rod arranged inside the processing table.

3. A production device for HVAC pipes according to claim 2, characterized in that, A limiting arc plate for restricting the HVAC pipeline is fixedly arranged on the surface of one end of the bending arc plate, and a positioning arc plate is separately arranged on one side of the limiting arc plate. A displacement plate is fixedly installed at the bottom of the positioning arc plate, and an electric push rod one is assembled between the displacement plate and the limiting arc plate.

4. An HVAC duct production device according to claim 2, characterized in that, The end of the smooth belt away from the flat belt pulley one is wound around the inside of a flat belt pulley two, and a shaft rod is fixedly installed at the center of the flat belt pulley two. The top end of the shaft rod rotates through the top of the processing table and is fixedly installed with a transmission disc; On the outside of the transmission disc, there is a top shaft frame fixedly installed on the surface of the processing table. Inside the top shaft frame, there is a positioning top frame fixedly installed on the surface of the processing table. Two groups of sliding rods are movably arranged inside the positioning top frame, and a stabilizing arc plate for restricting the HVAC pipeline is fixed at one end of the sliding rod, and an inclined panel is fixed at the other end of the sliding rod.

5. A heating and ventilation pipeline production device according to claim 1, characterized in that The feeding structure includes a fixed frame fixedly installed on the side wall of the processing table. One end of the fixed frame away from the processing table is rotatably assembled with a shaft ring frame, and inclined arc plates are symmetrically fixed along the middle inside the shaft ring frame; A straight tooth groove is opened on the outer edge of the shaft ring frame, and a straight tooth frame meshes with the bottom of the straight tooth groove. One end of the straight tooth frame is fixed with a support frame, and one end of the support frame away from the straight tooth frame is fixedly assembled at one end of the spur gear plate.

6. The production device of a heating and ventilation pipeline according to claim 5, characterized in that, Electric push rods two are assembled inside both of the two inclined arc plates, and a clamping arc plate is installed at one end of the electric push rod two away from the inclined arc plate; An elastic cloth made of an elastic material is arranged between the clamping arc plate and the inclined arc plate.

7. A production device for heating and ventilation pipes according to claim 1, characterized in that, The turning unit includes a bottom rail frame fixedly installed at the bottom of the processing table, and an inner moving frame is movably arranged inside the bottom rail frame. A screw rod is arranged inside the inner moving frame for screw drive; One end of the screw rod rotates through the outside of the bottom rail frame and is connected with a servo motor one; One end of the inner moving frame is rotatably assembled with a rotating top frame at the top. An electric push rod three is installed inside the rotating top frame. The output end of the electric push rod three is fixedly assembled with an inclined angle plate, and inner support plates are arranged on both sides of one end of the inclined angle plate away from the electric push rod three; A limiting rod is fixed on the outer side wall of the inner support plate, and the inner support plate is slidably limited inside the rotary top frame through the limiting rod.

8. A production device for heating and ventilation pipes according to claim 7, characterized in that, One end on the right side of the rotary top frame is fixed with a positioning rod, and a worm gear is fixedly assembled on the outer wall of the positioning rod. The worm gear is engaged with a worm, and the bottom of the worm is connected to a second servo motor fixedly installed on the inner moving frame.

9. The production device of a heating and ventilation pipeline according to claim 1, characterized in that, The heating unit includes a waste box fixedly installed on the surface of the fixed frame. The top end of the waste box is connected through a collecting cylinder, and a cleaning brush for cleaning the surface of the HVAC pipeline is annularly assembled inside the collecting cylinder. An electromagnetic heater is assembled on one side of the collecting cylinder.

10. The production device for HVAC pipelines according to claim 9, wherein One side of the processing frame is fixedly assembled with a feeding inclined frame, and a stretching groove is formed inside the feeding inclined frame. A stretching frame corresponding to the shape of the feeding inclined frame is movably arranged inside the stretching groove.

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