Automatic bending device for light steel keel

Abstract

The invention belongs to the technical field of keel bending, and particularly relates to an automatic bending device for a light steel joist, which comprises a conveyor, a bending assembly is arranged above the conveyor, and the device is provided with the bending assembly, so that the light steel joist can be attached to the surface of the bending assembly to be subjected to pre-deformation bending treatment; the light steel joist is subjected to small-angle deformation before formal bending treatment, so that the resilience after edge folding can be reduced, the residual stress in the light steel joist can be released, the possibility of quality problems such as deformation and cracking caused by stress concentration is reduced, the structural strength and durability of the light steel joist are enhanced, and the service life of the light steel joist is prolonged. The stability and reliability of the whole structure are guaranteed, the internal stress distribution is more uniform and reasonable, so that the machining precision and the product quality are improved, the bending consistency of the light steel keel is guaranteed, manual intervention is not needed, the automation degree of the bending process is greatly improved, the labor intensity is relieved, and the production efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of keel bending, and in particular relates to an automatic bending device for light steel keels. Background Art

[0002] In the field of construction, light steel keels are widely used as an important structural material in partition walls, ceilings and other structures. With the continuous improvement of the construction industry's requirements for construction quality and structural performance, the processing accuracy and quality of light steel keels are also facing higher challenges. The bending processing quality of light steel keels has become a key link. Although the existing bending devices in life meet the needs of users to a certain extent, there are still certain defects in the use process. The specific problems are as follows: after the existing light steel keel is fractured and bent, residual stress will be generated inside the light steel keel, and these stresses are often unevenly distributed. When the stress is concentrated in certain parts, it will cause the light steel keel to have quality problems such as deformation and cracking after bending. This not only affects the structural strength of the light steel keel itself, but also poses a threat to the stability and reliability of the overall building structure constructed using the light steel keel, and there are safety hazards. At the same time, due to the characteristics of the light steel keel material itself, rebound often occurs after bending, which makes it difficult to accurately control the bending angle, seriously affecting the processing accuracy, making it difficult for subsequent installation work to proceed smoothly; In order to solve the above problems, the present application proposes an automatic bending device for light steel keels. Summary of the invention

[0003] The present invention provides an automatic bending device for light steel keels, which can effectively solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: an automatic bending device for light steel keels, comprising a conveyor; A bending assembly is arranged above the conveyor, and the bending assembly includes a moving frame arranged above the conveyor, a moving seat slidably connected to both sides of the surface of the moving frame, and a bending hydraulic cylinder screwed to the surface of the moving seat, a bending pressure plate is fixed to the output end of the bending hydraulic cylinder, a bending seat is arranged directly below the bending pressure plate, a support plate is arranged directly below the bending seat, two groups of fixed frames are symmetrically arranged above the support plate, a flip shaft is rotatably connected between the two groups of fixed frames, a flip arm is fixed to the surface of the flip shaft, and an extrusion plate is fixed to the surface of the flip arm.

[0005] As a preferred embodiment of the automatic bending device for light steel keels of the present invention, limit rods are symmetrically fixed on both sides of the surface of the bending pressure plate, and limit grooves compatible with the limit rods are provided inside the movable seat, and positioning rods are fixed at the four corners of the bottom of the bending seat, and positioning grooves compatible with the positioning rods are provided inside the support plate, a spring 1 is wound around the surface of the positioning rod, and the two ends of the spring 1 are respectively fixed on the opposite sides of the bending seat and the support plate, a movable rail is installed between the support plate and the conveyor, and the support plate is slidably connected to the outside of the conveyor through the movable rail, a sliding frame is fixed on the surface of the support plate, and a connecting sleeve rod is sleeved on the surface of the sliding frame, and the connecting sleeve rod and the bending pressure plate are fixedly connected.

[0006] As a preferred automatic bending device for light steel keels of the present invention, connecting seats are symmetrically fixed on both sides of the surface of the support plate, a pushing seat is welded on the surface of the connecting seat, a trapezoidal push block is slidably connected inside the pushing seat, a wedge-shaped pressure block is arranged directly above the trapezoidal push block, and the wedge-shaped pressure block is fixed on the lower surface of the bending seat, a flip frame is hinged on the surface of the pushing seat, a roller is rotatably connected to one end of the flip frame, and the surface of the roller contacts the inclined surface of the trapezoidal push block, and a spring 2 is fixed between the bottom of one end of the flip frame and the surface of the connecting seat.

[0007] As a preferred automatic bending device for light steel keels of the present invention, a flip rack is hinged on the side of the flip frame surface away from the roller, the surface of the flip rack is meshedly connected with a flip gear, and the flip shaft is fixedly connected to the inside of the flip gear, and the fixed frame is fixed to the surface of the push seat.

[0008] As a preferred embodiment of the automatic bending device for light steel keels of the present invention, limit blocks are symmetrically fixed on both sides of the surface of the flip rack, limit frames are symmetrically fixed on both sides of the surface of the push seat, and the limit blocks are slidably connected to the inside of the limit frames, electric blocking rods are symmetrically fixed on both sides of the surface of the support plate, and a delay switch is fixed on the surface of the electric blocking rods.

[0009] As a preferred automatic bending device for light steel keels of the present invention, a preheating assembly is installed on the front side of the movable frame, and the preheating assembly includes a support frame welded on the front side of the surface of the movable frame, a telescopic sleeve fixed on the surface of the support frame, and a telescopic sleeve plate slidably connected to the inside of the telescopic sleeve, a connecting frame is fixed between the telescopic sleeve plate and the movable seat, a fixing plate is fixed to the bottom of the telescopic sleeve plate, a coating frame is fixed to the bottom end of the fixing plate, a coating roller is arranged inside the coating frame, a heating plate is arranged on the outside of the coating frame, and a heat conductive sheet is fixed to the bottom of the heating plate.

[0010] As a preferred automatic bending device for light steel keels of the present invention, the surface screws of the support frame are connected to a driving motor, the output end of the driving motor is connected to a bidirectional screw rod through a worm gear, and the bidirectional screw rod is rotatably connected to the surface of the telescopic sleeve, and threaded blocks are symmetrically threaded on both sides of the surface of the bidirectional screw rod, and a movable groove adapted to the threaded block is opened inside the telescopic sleeve, and the bottom end of the threaded block is fixedly connected to the surface of the telescopic sleeve.

[0011] As a preferred embodiment of the automatic bending device for light steel keels of the present invention, oil barrels are symmetrically fixed on both sides of the surface of the smear frame, a sealing plate is slidably connected inside the oil barrel, a connecting plate is fixed at the bottom of the sealing plate, a spring three is fixed between the connecting plate and the smear frame, an abutting protrusion is fixed on the surface of the connecting plate, the surface of the abutting protrusion abuts a cam plate, a rotating shaft is fixed inside the cam plate, and the rotating shaft is rotatably connected to the surface of the smear frame through a bearing frame, a bevel gear pair is fixed at the bottom end of the rotating shaft, a rotating shaft is fixed between the coaxial inner bevel gears of the two groups of the bevel gear pairs, the rotating shaft is rotatably connected to the inside of the smear frame, and the smear roller is fixedly connected to the surface of the rotating shaft, an oil outlet pipe running through the inside of the smear frame is fixed at the bottom end of the oil barrel, the top end of the oil outlet pipe faces the surface of the sealing plate, and the bottom end of the oil outlet pipe faces the surface of the smear roller, a bracket is symmetrically fixed on one side of the surface of the smear frame, and two groups of the heating plates are fixedly connected between the two groups of brackets.

[0012] As a preferred automatic bending device for light steel keels of the present invention, a polishing assembly is installed on the rear side of the movable seat, and the polishing assembly includes a connecting frame 2 welded to the rear side of the movable seat surface, a polishing seat fixed on the surface of the connecting frame 2, and a polishing plate slidably connected to the inside of the polishing seat, a sprayer is arranged on the surface of the polishing seat, and a nozzle is fixed to the output end of the sprayer.

[0013] As a preferred automatic bending device for light steel keels of the present invention, a spray seat is fixed on the surface of the polishing seat, and the spray machine is hinged inside the spray seat, a plurality of groups of springs four arranged at equal distances are fixed between the polishing plate and the polishing seat, and a plurality of groups of polishing strips arranged at equal distances are fixed on the surface of the polishing plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the present invention has a scientific and reasonable structure and is safe and convenient to use: 1. A bending component is provided to allow the light steel keel to be fitted on its surface for pre-deformation and bending, so that it can be deformed at a small angle before the formal bending process. This can not only reduce the amount of springback after folding, but also release the residual stress inside the light steel keel, reducing the possibility of quality problems such as deformation and cracking caused by stress concentration, enhancing the structural strength and durability of the light steel keel, ensuring the stability and reliability of the overall structure, and making the internal stress distribution more uniform and reasonable, thereby improving the processing accuracy and product quality, ensuring the consistency of the light steel keel fracture and bending, and eliminating the need for manual intervention, which greatly improves the degree of automation of the bending process, reduces labor intensity, and improves production efficiency.

[0015] 2. A preheating component is provided to evenly and stably apply lubricating oil to the surface of the light steel keel, effectively reducing the friction coefficient of the light steel keel during subsequent processing or use. At the same time, the uniform lubricating oil layer can protect the surface of the light steel keel from scratches and wear, reduce the defective rate, and improve product quality. The heat of the heating plate is transferred to the surface of the fractured and bent position of the light steel keel to achieve the purpose of heating the folding edge, so that the light steel keel can be bent at a suitable temperature, reduce the brittleness of the material, and reduce the stress concentration at the folding edge, thereby improving the overall strength and deformation resistance of the product.

[0016] 3. A polishing component is provided to grind and polish the surface of the bending part of the light steel keel. It can not only remove the burrs, protrusions and other defects caused by processing on the surface of the light steel keel after bending, improve the surface quality, but also remove the processing debris, dust and other impurities that may remain on the surface of the light steel keel, making the surface of the light steel keel denser, achieving more uniform adhesion of protective oil, avoiding the problem of local accumulation or loss of protective oil due to rough surface, and forming a protective film on the surface of the light steel keel, which can effectively isolate air and moisture, thereby preventing oxygen and water vapor from contacting the surface of the light steel keel, slowing down the oxidation and corrosion process of the metal, and significantly extending the service life of the light steel keel. In addition, the protective oil can also penetrate into the tiny pores on the surface of the light steel keel to further prevent the invasion of corrosive substances. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ; Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ; Figure 3 It is a schematic diagram of the structure of the bending assembly in the present invention; Figure 4It is a schematic diagram of the local structure of the bending assembly in the present invention; Figure 5 The structure of the support plate and the extrusion plate in the present invention is schematically shown. Figure 1 ; Figure 6 For the present invention Figure 5 A magnified image of point A; Figure 7 The structure of the support plate and the extrusion plate in the present invention is schematically shown. Figure 2 ; Figure 8 It is a structural schematic diagram of the preheating component in the present invention; Fig. 9 It is a schematic diagram of the structure of the coating rack and the heating plate in the present invention; Fig.10 It is a partial cross-sectional view of the smear rack in the present invention; Fig.11 For the present invention Fig.10 The enlarged view of point B; Fig.12 It is a schematic diagram of the structure of the polishing component in the present invention; Fig.13 It is a cross-sectional view of the polishing seat in the present invention.

[0018] In the figure: 1. conveyor; 2. bending assembly; 21. moving frame; 22. moving seat; 23. bending hydraulic cylinder; 24. limiting rod; 25. bending pressure plate; 26. bending seat; 27. positioning rod; 28. spring one; 29. ​​support plate; 210. moving rail; 211. sliding frame; 212. connecting sleeve rod; 213. connecting seat; 214. pushing seat; 215. trapezoidal push block; 216. wedge-shaped pressure block; 217. turning frame; 218. roller; 219. turning rack; 220. turning gear; 221. turning shaft; 222. fixed frame; 223. turning arm; 224. extrusion plate; 225. limiting block; 226. limiting frame; 227. electric blocking rod; 228. delay switch; 229. spring two; 3. Preheating assembly; 31. Support frame; 32. Telescopic sleeve; 33. Bidirectional screw rod; 34. Drive motor; 35. Threaded block; 36. Telescopic sleeve; 37. Connecting frame one; 38. Fixed plate; 39. Coating frame; 310. Oil drum; 311. Sealing plate; 312. Connecting plate; 313. Spring three; 314. Abutting protrusion; 315. Cam plate; 316. Rotating shaft; 317. Bevel gear pair; 318. Rotating shaft; 319. Coating roller; 320. Oil outlet pipe; 321. Bracket; 322. Heating plate; 323. Heat conducting sheet; 4. Polishing assembly; 41. Connecting frame two; 42. Polishing seat; 43. Spraying seat; 44. Sprayer; 45. Nozzle; 46. Polishing plate; 47. Spring four; 48. Polishing strip. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example: Figure 1 - Fig.13 As shown, the present invention provides a technical solution, an automatic bending device for light steel keels, comprising a conveyor 1; A bending assembly 2 is arranged above the conveyor 1, and the bending assembly 2 includes a moving frame 21, a moving seat 22, a bending hydraulic cylinder 23, a limiting rod 24, a bending pressure plate 25, a bending seat 26, a positioning rod 27, a spring 1 28, a support plate 29, a moving rail 210, a sliding frame 211, a connecting sleeve rod 212, a connecting seat 213, a push seat 214, a trapezoidal push block 215, a wedge-shaped pressure block 216, a flip frame 217, a roller 218, a flip rack 219, a flip gear 220, a flip shaft 221, a fixed frame 222, a flip arm 223, an extrusion plate 224, a limiting block 225, a limiting frame 226, an electric blocking rod 227, a delay switch 228 and a spring 229; A moving frame 21 is arranged above the conveyor 1, and a moving seat 22 is symmetrically slidably connected to the surface of the moving frame 21 on both sides, and a bending hydraulic cylinder 23 is screwed to the surface of the moving seat 22. A bending pressure plate 25 is fixed to the output end of the bending hydraulic cylinder 23, and a limiting rod 24 is symmetrically fixed to the surface of the bending pressure plate 25 on both sides. A limiting groove adapted to the limiting rod 24 is provided inside the moving seat 22, and a bending seat 26 is arranged directly below the bending pressure plate 25. Positioning rods 27 are fixed at the four corners of the bottom of the bending seat 26. A support plate 29 is arranged directly below the bending seat 26, and a positioning rod 27 adapted to the positioning rod 27 is provided inside the support plate 29. A spring 28 is wound around the surface of the positioning rod 27, and the two ends of the spring 28 are respectively fixed on the opposite sides of the bending seat 26 and the support plate 29. A movable rail 210 is installed between the support plate 29 and the conveyor 1, and the support plate 29 is slidably connected to the outside of the conveyor 1 through the movable rail 210. A sliding frame 211 is fixed on the surface of the support plate 29, and a connecting sleeve rod 212 is sleeved on the surface of the sliding frame 211, and the connecting sleeve rod 212 is fixedly connected to the bending pressure plate 25. Connecting seats 213 are symmetrically fixed on both sides of the surface of the support plate 29, and a push seat 214 is welded on the surface of the connecting seat 213. The inner sliding seat 214 is A trapezoidal push block 215 is connected, a wedge-shaped pressure block 216 is arranged just above the trapezoidal push block 215, and the wedge-shaped pressure block 216 is fixed to the lower surface of the bending seat 26, a flip frame 217 is hinged on the surface of the push seat 214, one end of the flip frame 217 is rotatably connected to a roller 218, and the surface of the roller 218 contacts the inclined surface of the trapezoidal push block 215, a spring 229 is fixed between the bottom of one end of the flip frame 217 and the surface of the connecting seat 213, and a flip rack 219 is hinged on the side of the flip frame 217 away from the roller 218, and the surface of the flip rack 219 is meshed and connected with a flip gear 220, and the flip gear 220 is rotated. A flip shaft 221 is fixed inside, and fixed frames 222 are symmetrically fixed on both sides of the surface of the push seat 214, and the flip shaft 221 is rotatably connected between the two groups of fixed frames 222. A flip arm 223 is fixed on the surface of the flip shaft 221, and an extrusion plate 224 is fixed on the surface of the flip arm 223. Limit blocks 225 are symmetrically fixed on both sides of the surface of the flip rack 219, and limit frames 226 are symmetrically fixed on both sides of the surface of the push seat 214, and the limit blocks 225 are slidably connected to the inside of the limit frames 226. Electric blocking rods 227 are symmetrically fixed on both sides of the surface of the support plate 29, and a delay switch 228 is fixed on the surface of the electric blocking rod 227.

[0021] A preheating assembly 3 is installed on the front side of the mobile frame 21. The preheating assembly 3 includes a support frame 31, a telescopic sleeve 32, a bidirectional screw rod 33, a drive motor 34, a threaded block 35, a telescopic sleeve plate 36, a connecting frame 1 37, a fixing plate 38, a smearing frame 39, an oil barrel 310, a blocking plate 311, a connecting plate 312, a spring 313, an abutting protrusion 314, a cam plate 315, a rotating shaft 316, a bevel gear pair 317, a rotating shaft 318, a smearing roller 319, an oil outlet pipe 320, a bracket 321, a heating plate 322, and a heat conducting sheet 323; A support frame 31 is welded to the front side of the surface of the mobile frame 21, a telescopic sleeve 32 is fixed to the surface of the support frame 31, a driving motor 34 is screwed to the surface of the support frame 31, the output end of the driving motor 34 is connected to a bidirectional screw rod 33 through a worm gear, and the bidirectional screw rod 33 is rotatably connected to the surface of the telescopic sleeve 32, and thread blocks 35 are symmetrically threaded on both sides of the surface of the bidirectional screw rod 33, and a moving groove adapted to the thread block 35 is opened inside the telescopic sleeve 32, and the thread block 35 is A telescopic sleeve 36 is fixed at the bottom, and the telescopic sleeve 36 is slidably connected to the storage groove opened inside the telescopic sleeve 32. A connecting frame 37 is fixed between the telescopic sleeve 36 and the movable seat 22. A fixed plate 38 is fixed to the bottom of the telescopic sleeve 36. A smearing frame 39 is fixed to the bottom of the fixed plate 38. Oil barrels 310 are symmetrically fixed on both sides of the surface of the smearing frame 39. A blocking plate 311 is slidably connected to the inside of the oil barrel 310. A connecting plate 312 is fixed to the bottom of the blocking plate 311. The connecting plate 312 is fixed to the bottom of the connecting plate 312. A spring 313 is fixed between the connecting plate 312 and the smear rack 39, a contact protrusion 314 is fixed on the surface of the connecting plate 312, a cam plate 315 is contacted on the surface of the contact protrusion 314, a rotating shaft 316 is fixed inside the cam plate 315, and the rotating shaft 316 is rotatably connected to the surface of the smear rack 39 through a bearing frame, a bevel gear pair 317 is fixed to the bottom end of the rotating shaft 316, a rotating shaft 318 is fixed between the coaxial bevel gears of the two sets of bevel gear pairs 317, and the rotating shaft 318 is rotatably connected to the surface of the smear rack 39. It is connected to the inside of the smear rack 39, and a smear roller 319 is fixed on the surface of the rotating shaft 318. An oil outlet pipe 320 that passes through the inside of the smear rack 39 is fixed to the bottom end of the oil barrel 310. The top of the oil outlet pipe 320 faces the surface of the sealing plate 311, and the bottom of the oil outlet pipe 320 faces the surface of the smear roller 319. Brackets 321 are symmetrically fixed on one side of the surface of the smear rack 39, a heating plate 322 is fixed between the two groups of brackets 321, and a heat conductive sheet 323 is fixed to the bottom of the heating plate 322.

[0022] A polishing assembly 4 is installed on the rear side of the mobile frame 21, and the polishing assembly 4 includes a connecting frame 2 41, a polishing seat 42, a spraying seat 43, a sprayer 44, a nozzle 45, a polishing plate 46, a spring 47 and a polishing strip 48; A connecting frame 41 is welded to the rear side of the surface of the movable seat 22, a polishing seat 42 is fixed to the surface of the connecting frame 41, a spraying seat 43 is fixed to the surface of the polishing seat 42, a sprayer 44 is hinged inside the spraying seat 43, a nozzle 45 is fixed to the output end of the sprayer 44, a polishing plate 46 is slidably connected inside the polishing seat 42, a plurality of groups of springs 47 arranged at equal distances are fixed between the polishing plate 46 and the polishing seat 42, and a plurality of groups of polishing strips 48 arranged at equal distances are fixed to the surface of the polishing plate 46.

[0023] When the light steel keel needs to be bent, the light steel keel is first placed on the surface of the conveyor 1, and then according to the bending requirements, the drive motor 34 is started to drive the bidirectional screw rod 33 to rotate on the surface of the telescopic sleeve 32, and then the two groups of telescopic sleeve plates 36 are driven by the threaded block 35 to slide relative to each other inside the telescopic sleeve 32, so as to adjust the distance between the two groups of connecting frames 1 37 and the fixed plate 38. Through the movement of the connecting frame 1 37, the moving seat 22 can be driven to slide on the surface of the moving frame 21, and then the bending hydraulic cylinder 23 and the bending pressure plate 25 can be driven to move synchronously, so as to adjust the bending position of the light steel keel by the bending pressure plate 25. Through the movement of the bending pressure plate 25, with the cooperation of the connecting sleeve rod 212 , which can drive the sliding frame 211 to move, thereby driving the supporting plate 29 to slide on the surface of the moving rail 210, and can drive the bending seat 26 to move accordingly with the movement of the bending pressure plate 25, so as to accurately adjust the bending position of the light steel keel by positioning the bending pressure plate 25, and realize flexible adjustment of the position of the bending pressure plate 25 according to the bending requirements, so that the device can adapt to the processing of light steel keels with various specifications and bending angles. At the same time, through the movement of the fixed plate 38, the coating frame 39 can be driven to move synchronously, and the movement of the coating frame 39 corresponds to the movement of the bending pressure plate 25 and the bending seat 26, so that the coating frame 39 and the bending pressure plate 25 and the bending seat 26 always maintain a correct relative position relationship.

[0024] It is worth noting that by driving the bending seat 26 to move accordingly with the bending pressure plate 25, this coordinated movement ensures that during the bending process of the light steel keel, the bending pressure plate 25 and the bending seat 26 always maintain a correct relative position relationship, effectively avoiding bending errors, keel damage and other problems caused by the incoordination of the positions of the two, and improving the bending quality and processing accuracy.

[0025] Furthermore, after the position adjustment of the bending plate 25, the bending seat 26 and the coating rack 39 is completed, the conveyor 1 is started to transport the light steel keel. At this time, the coating roller 319 inside the coating rack 39 will be closely attached to the surface of the light steel keel, and rotate along its surface as the light steel keel moves, thereby driving the rotating shaft 318 to rotate synchronously inside the coating rack 39, and then, with the cooperation of the bevel gear pair 317, it can drive the rotating shaft 316 and the cam plate 315 to rotate on the coating rack. The surface of the oil drum 310 is rotated, and the rotation of the cam plate 315 can intermittently push the abutting protrusion 314 to drive the connecting plate 312 to squeeze the spring 313 to deform and generate elastic force, thereby intermittently reciprocatingly driving the blocking plate 311 to slide inside the oil drum 310, so as to intermittently block and open the channel between the oil drum 310 and the oil outlet pipe 320, so as to achieve the lubricating oil inside the oil drum 310 dripping on the surface of the coating roller 319 in small amounts for many times, so that the coating roller 319 The surface of the light steel keel is always kept in an oil-immersed state, thereby accurately controlling the amount of lubricating oil used and avoiding waste and pollution caused by excessive lubricating oil. The continuously oil-immersed coating roller 319 can evenly and stably apply lubricating oil to the surface of the light steel keel, effectively reducing the friction coefficient of the light steel keel during subsequent processing or use. At the same time, the uniform lubricating oil layer can protect the surface of the light steel keel from scratches and wear, reduce the defective rate, and improve product quality. The light steel keel coated with lubricating oil will be in contact with the heat conductive sheet 323 under the transportation of the conveyor 1. Through the movement of the light steel keel, the heat conductive sheet 323 can not only transfer the heat of the heating plate 322 to the surface of the fractured bending position of the light steel keel to achieve the purpose of heating the folding edge, so that the light steel keel can be bent at a suitable temperature, reduce the brittleness of the material, and reduce the stress concentration at the folding edge, thereby improving the overall strength and deformation resistance of the product, but also can smooth the lubricating oil applied by the coating roller 319, so that the lubricating oil can be more evenly attached to the surface of the light steel keel.

[0026] After the heated and oiled light steel keel is transported to the bottom of the bending plate 25, the bending hydraulic cylinder 23 is started to drive the bending plate 25 to drive the limit rod 24 to slide inside the moving seat 22, so that the bending plate 25 can be moved close to the surface of the light steel keel. When the bending plate 25 contacts the surface of the light steel keel, the bending plate 25 squeezes the light steel keel to squeeze the bending seat 26 to drive the positioning rod 27 to slide in the positioning groove opened in the support plate 29, and squeezes the spring 28 to deform and generate elastic force, thereby buffering the impact force of the bending plate 25 on the light steel keel, ensuring that the light steel keel is protected from damage, ensuring product quality, reducing keel deformation and surface scratches caused by impact, and improving the light steel keel. The yield rate after the bending process is improved as the bending seat 26 moves downward. When the bending seat 26 contacts the delay switch 228 and the electric blocking rod 227, the bending seat 26 will stop moving downward through the blocking of the electric blocking rod 227, so that the light steel keel is fitted on its surface for pre-deformation bending treatment, so that it can be deformed at a small angle before the formal bending treatment, which can not only reduce the rebound amount after folding, but also release the residual stress inside the light steel keel, reduce the possibility of quality problems such as deformation and cracking caused by stress concentration, enhance the structural strength and durability of the light steel keel, ensure the stability and reliability of the overall structure, and make the internal stress distribution more uniform and reasonable, thereby improving the processing accuracy and product quality.

[0027] It is worth noting that when the bending seat 26 is blocked by the electric blocking rod 227 and stops moving downward, the bending pressure plate 25 and the bending seat 26 will perform pre-deformation bending processing on the light steel keel between the two, and after the pre-deformation bending processing, the bending hydraulic cylinder 23 will drive the bending pressure plate 25 to move up and reset.

[0028] Furthermore, when the light steel keel is pre-deformed and bent and the delay switch 228 is pressed, the electric blocking rod 227 will automatically start and complete the contraction, thereby increasing the distance between the delay switch 228 and the bending seat 26, and the bending hydraulic cylinder 23 will also extend again after completing the contraction and reset, which can drive the bending pressure plate 25 to move up and then move down again for bending and extrusion. Subsequently, the bending pressure plate 25 will press the light steel keel down again to completely fit the surface of the bending seat 26 to complete the formal bending process. Because the distance between the delay switch 228 and the electric blocking rod 227 and the bending seat 26 increases, the downward movement distance of the bending seat 26 will also increase accordingly. At this time, the downward movement of the bending seat 26 will drive the wedge-shaped pressing block 216 to approach the surface of the trapezoidal pushing block 215, and push the trapezoidal pushing block 215 to slide inside the pushing seat 214, thereby pushing the roller 218 to drive the flip frame 217 to move on the pushing seat 214. The surface is flipped, which can drive the flip rack 219 to move downward under the limit of the limit block 225 and the limit frame 226. Through the downward movement of the flip rack 219, the flip gear 220 can be engaged to drive the flip shaft 221 to rotate inside the fixed frame 222, thereby driving the flip arm 223 to flip, which can drive the extrusion plate 224 to flip synchronously and approach the bending edge surface of the light steel keel. When the bending seat 26 contacts the surface of the retracted electric blocking rod 227 again, the light steel keel will be completely fitted with the surfaces of the bending pressure plate 25 and the bending seat 26, and at this time, the extrusion plate 224 will also be flipped and fitted on the bending edge surface of the light steel keel, so that more precise bending processing can be completed, ensuring that the light steel keel is completely fitted with the bending seat 26, ensuring the consistency of the bending of the light steel keel, without manual intervention, greatly improving the degree of automation of the bending process, reducing labor intensity, and improving production efficiency.

[0029] It is worth noting that the extrusion plate 224 is flipped and fitted to the bent edge surface of the light steel keel at the appropriate time, which can effectively enhance the strength and stability of the bent edge, reduce the possibility of deformation or damage of the bent edge during use, and further ensure the flatness and shape accuracy of the bent edge. The final action of the extrusion plate 224 fitting the bent edge surface of the light steel keel is a gradual and stable process, which will not cause additional stress concentration or deformation to the bent edge of the keel, thereby ensuring the material integrity of the light steel keel at the bend, enabling it to better withstand various loads during subsequent use, thereby extending the service life of the light steel keel.

[0030] Furthermore, the bent light steel keel can be fitted with the surface of the polishing plate 46 under the continued conveyance of the conveyor 1. At this time, the elastic force of the spring 47 can make the polishing plate 46 and the polishing strip 48 close to the surface of the bending part of the light steel keel, and polish the surface of the bending part of the light steel keel as the light steel keel moves, which can not only remove the burrs, protrusions and other defects caused by processing on the surface of the light steel keel after bending, improve the surface quality, but also remove the processing debris, dust and other impurities that may remain on the surface of the light steel keel, making the surface of the light steel keel more Dense, achieving more uniform adhesion of protective oil, avoiding the problem of local accumulation or loss of protective oil due to rough surface. The polished light steel keel will be sprayed with protective oil by the sprayer 44 through the nozzle 45, so as to form a protective film on the surface of the light steel keel, which can effectively isolate air and moisture, thereby preventing oxygen and water vapor from contacting the surface of the light steel keel, slowing down the oxidation and corrosion process of the metal, and significantly extending the service life of the light steel keel. In addition, the protective oil can also penetrate into the tiny pores on the surface of the light steel keel to further prevent the invasion of corrosive substances.

[0031] It is worth noting that the spraying angle of the sprayer 44 and the nozzle 45 can be adjusted through the spraying seat 43, so as to better spray the surface of the light steel keel for protection, remove surface defects by grinding, and spray protective oil to prevent corrosion. The combination of the two can greatly extend the service life of the light steel keel. During the long-term use of the building structure, the light steel keel can better maintain its structural integrity and reduce the frequency of maintenance and replacement.

[0032] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic bending device for light steel keels, comprising a conveyor (1); Features: A bending assembly (2) is arranged above the conveyor (1), the bending assembly (2) comprising a moving frame (21) arranged above the conveyor (1), a moving seat (22) slidably connected to both sides of the surface of the moving frame (21), and a bending hydraulic cylinder (23) screwed to the surface of the moving seat (22), a bending pressure plate (25) is fixed to the output end of the bending hydraulic cylinder (23), a bending seat (26) is arranged directly below the bending pressure plate (25), a support plate (29) is arranged directly below the bending seat (26), two groups of fixed frames (222) are symmetrically arranged above the support plate (29), a flip shaft (221) is rotatably connected between the two groups of fixed frames (222), a flip arm (223) is fixed to the surface of the flip shaft (221), and a pressing plate (224) is fixed to the surface of the flip arm (223).

2. The automatic bending device for light steel keels according to claim 1 is characterized in that: Limiting rods (24) are symmetrically fixed on both sides of the surface of the bending pressure plate (25); limiting grooves matching the limiting rods (24) are provided inside the movable seat (22); positioning rods (27) are fixed at the four corners of the bottom of the bending seat (26); positioning grooves matching the positioning rods (27) are provided inside the support plate (29); a spring (28) is wound around the surface of the positioning rod (27); and the two ends of the spring (28) are respectively fixed on the bending seat (26); On the opposite side of the mold base (26) and the support plate (29), a movable rail (210) is installed between the support plate (29) and the conveyor (1), and the support plate (29) is slidably connected to the outer side of the conveyor (1) via the movable rail (210), a sliding frame (211) is fixed on the surface of the support plate (29), a connecting sleeve rod (212) is sleeved on the surface of the sliding frame (211), and the connecting sleeve rod (212) and the bending pressure plate (25) are fixedly connected.

3. The automatic bending device for light steel keels according to claim 2 is characterized in that: Connecting seats (213) are symmetrically fixed on both sides of the surface of the support plate (29), a push seat (214) is welded to the surface of the connecting seat (213), a trapezoidal push block (215) is slidably connected inside the push seat (214), a wedge-shaped pressing block (216) is arranged directly above the trapezoidal push block (215), and the wedge-shaped pressing block (216) is fixed to the lower surface of the bending seat (26), a flip frame (217) is hingedly connected to the surface of the push seat (214), one end of the flip frame (217) is rotatably connected to a roller (218), and the surface of the roller (218) contacts the inclined surface of the trapezoidal push block (215), and a spring 2 (229) is fixed between the bottom of one end of the flip frame (217) and the surface of the connecting seat (213).

4. The automatic bending device for light steel keels according to claim 3 is characterized in that: A flip rack (219) is hingedly connected to a side of the flip frame (217) away from the roller (218), the surface of the flip rack (219) is meshingly connected to a flip gear (220), and the flip shaft (221) is fixedly connected to the inside of the flip gear (220), and the fixed frame (222) is fixed to the surface of the push seat (214).

5. The automatic bending device for light steel keels according to claim 4 is characterized in that: Limit blocks (225) are symmetrically fixed on both sides of the surface of the flip rack (219), limit frames (226) are symmetrically fixed on both sides of the surface of the push seat (214), and the limit blocks (225) are slidably connected inside the limit frames (226), electric blocking rods (227) are symmetrically fixed on both sides of the surface of the support plate (29), and a delay switch (228) is fixed on the surface of the electric blocking rod (227).

6. The automatic bending device for light steel keels according to claim 1 is characterized in that: A preheating assembly (3) is installed on the front side of the movable frame (21). The preheating assembly (3) comprises a support frame (31) welded to the front side of the surface of the movable frame (21), a telescopic sleeve (32) fixed on the surface of the support frame (31), and a telescopic sleeve (36) slidably connected to the inside of the telescopic sleeve (32). A connecting frame (37) is fixed between the telescopic sleeve (36) and the movable seat (22). A fixing plate (38) is fixed to the bottom of the telescopic sleeve (36). A coating frame (39) is fixed to the bottom end of the fixing plate (38). A coating roller (319) is arranged inside the coating frame (39). A heating plate (322) is arranged on the outside of the coating frame (39). A heat conducting sheet (323) is fixed to the bottom of the heating plate (322).

7. The automatic bending device for light steel keels according to claim 6 is characterized in that: The surface of the support frame (31) is screw-connected to a driving motor (34); the output end of the driving motor (34) is connected to a bidirectional screw rod (33) via a worm gear, and the bidirectional screw rod (33) is rotatably connected to the surface of the telescopic sleeve (32); thread blocks (35) are symmetrically threaded on both sides of the surface of the bidirectional screw rod (33); a movable groove adapted to the thread block (35) is provided inside the telescopic sleeve (32); and the bottom end of the thread block (35) is fixedly connected to the surface of the telescopic sleeve (36).

8. The automatic bending device for light steel keels according to claim 6 is characterized in that: Oil barrels (310) are symmetrically fixed on both sides of the surface of the smear rack (39); a blocking plate (311) is slidably connected inside the oil barrel (310); a connecting plate (312) is fixed at the bottom of the blocking plate (311); a spring (313) is fixed between the connecting plate (312) and the smear rack (39); an abutting protrusion (314) is fixed on the surface of the connecting plate (312); a cam plate (315) is abutted on the surface of the abutting protrusion (314); a rotating shaft (316) is fixed inside the cam plate (315); the rotating shaft (316) is rotatably connected to the surface of the smear rack (39) through a bearing frame; a bevel gear pair (316) is fixed at the bottom end of the rotating shaft (316). 7), a rotating shaft (318) is fixed between the coaxial bevel gears of the two groups of bevel gear pairs (317), the rotating shaft (318) is rotatably connected to the inside of the coating frame (39), and the coating roller (319) is fixedly connected to the surface of the rotating shaft (318), the bottom end of the oil barrel (310) is fixed with an oil outlet pipe (320) that passes through the inside of the coating frame (39), the top end of the oil outlet pipe (320) faces the surface of the blocking plate (311), and the bottom end of the oil outlet pipe (320) faces the surface of the coating roller (319), a bracket (321) is symmetrically fixed on one side of the surface of the coating frame (39), and the two groups of heating plates (322) are fixedly connected between the two groups of brackets (321).

9. The automatic bending device for light steel keels according to claim 1 is characterized in that: A polishing assembly (4) is installed on the rear side of the movable frame (21), and the polishing assembly (4) comprises a second connecting frame (41) welded to the rear side of the surface of the movable seat (22), a polishing seat (42) fixed to the surface of the second connecting frame (41), and a polishing plate (46) slidably connected to the inside of the polishing seat (42). A sprayer (44) is arranged on the surface of the polishing seat (42), and a nozzle (45) is fixed to the output end of the sprayer (44).

10. The automatic bending device for light steel keels according to claim 9 is characterized in that: A spraying seat (43) is fixed on the surface of the polishing seat (42), and the spraying machine (44) is hinged inside the spraying seat (43). A plurality of groups of springs (47) arranged at equal distances are fixed between the polishing plate (46) and the polishing seat (42), and a plurality of groups of polishing strips (48) arranged at equal distances are fixed on the surface of the polishing plate (46).

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