Automatic rust removal and paint spraying equipment for I-shaped steel and implementation method of automatic rust removal and paint spraying equipment

Abstract

The automatic rust removal and paint spraying equipment comprises a rack, a feeding mechanism is installed at one end of the upper portion of the rack, a pre-pressing mechanism located above the feeding mechanism is further installed above the rack, a centering mechanism is arranged on the portion, located on one side of the feeding mechanism, of the upper portion of the rack, and a rust removal mechanism is arranged on one side of the centering mechanism; a spraying mechanism is arranged on one side of the rust removal mechanism, and first supporting wheel sets are arranged on the two sides of the spraying mechanism correspondingly. The invention further discloses an implementation method of the automatic rust removal and paint spraying equipment for the I-shaped steel. Through the arrangement of the feeding mechanism, the derusting mechanism and the spraying mechanism, automatic continuous operation of feeding, derusting and paint spraying of the I-shaped steel is achieved, compared with a traditional manual treatment mode, 24-hour continuous work is supported, the treatment efficiency is improved by 5-10 times, the working efficiency of derusting and paint spraying of the I-shaped steel is effectively improved, and the labor intensity of workers is lowered. And the labor intensity of workers is reduced.

Description

Technical Field

[0001] This invention belongs to the field of rust removal and painting technology, specifically relating to an automatic rust removal and painting device for I-beams and its implementation method. Background Technology

[0002] I-beams are widely used in construction and bridge engineering, but they are prone to rusting when exposed to the outdoors for extended periods. Currently, the industry uses traditional manual rust removal and painting methods for I-beams, which have technical shortcomings and low efficiency: 1. Manual rust removal requires workers to manually sand the rust off the surface of the I-beams using sandpaper or power tools, which is slow and produces uneven results. After rust removal, workers must manually spray paint, which is prone to dripping and makes it difficult to control the coating thickness. Manual efficiency is extremely low, with a single worker effectively processing the material for 6-7 hours per day, and efficiency continues to decline as worker fatigue increases. 2. Safety and environmental risks: Long-term inhalation of rust dust and paint volatiles (such as benzene compounds) can easily lead to pneumoconiosis and respiratory diseases. 3. Unstable quality of manual operation: Uneven sanding pressure leads to incomplete rust removal, and painting is prone to runs or missed spots, resulting in coating thickness errors exceeding ±0.1mm, affecting project progress and construction quality.

[0003] With the development of industrial automation technology, the earliest attempts involved using rust removal machines and painting machines separately. However, this segmented operation required multiple handling of the I-beams, which actually increased the workload. Most market equipment was designed for "unassembled steel components," failing to consider the structural uniqueness of "assembled I-beams," resulting in limited operating space, inability to fully cover the grinding surface, and easy deviation during steel component transport. With the large-scale development of the construction, bridge, and machinery manufacturing sectors, the demand for processing assembled I-beams is increasing. Simultaneously, the vigorous promotion of environmental protection policies means that traditional manual rust removal and segmented equipment can no longer meet the comprehensive requirements of "high efficiency, high quality, and environmental protection." Summary of the Invention

[0004] The purpose of this invention is to provide an automatic rust removal and painting device for I-beams, thereby solving the problems mentioned in the background section. The automatic rust removal and painting device for I-beams provided by this invention features fully automatic continuous operation of rust removal, cleaning, and painting.

[0005] Another objective of this invention is to provide a method for implementing an automatic rust removal and painting device for I-beams.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic rust removal and painting equipment for I-beams, comprising a frame, a feeding mechanism installed at one end of the frame, and a pre-pressing mechanism installed above the feeding mechanism on the frame. A centering mechanism is provided on one side of the feeding mechanism on the frame, a rust removal mechanism is provided on one side of the centering mechanism, a painting mechanism is provided on one side of the rust removal mechanism, and first support wheel sets are provided on both sides of the painting mechanism.

[0007] To facilitate the conveying of the I-beams, the feeding mechanism further includes a feeding motor and several second support wheel sets. The output end of the feeding motor is equipped with a drive sprocket. The second support wheel sets include a mounting shaft, with both ends of the mounting shaft mounted on the frame via bearing seats. A support wheel is connected to the middle position of the mounting shaft. A driven sprocket corresponding to the drive sprocket is also mounted on the mounting shaft. The driven sprocket and the drive sprocket are connected by a transmission chain.

[0008] To ensure the stability of conveying the I-beams, the preloading mechanism further includes two opposing sliding seats, on which a shaft seat slides, and a support shaft is connected between the two shaft seats. A preloading wheel is connected to the middle position of the support shaft via a bearing.

[0009] To ensure the stable and smooth transport of the I-beam, a support seat is further installed on the upper end of the sliding seat, and a hydraulic rod is installed on the support seat. An adjusting seat located above the shaft seat slides on the sliding seat. The adjusting seat and the shaft seat are respectively provided with matching limiting grooves. The output end of the hydraulic rod is connected to the adjusting seat. Two optical shafts are connected to the shaft seat. The adjusting seat and the optical shafts are slidably connected. A spring located above the shaft seat is sleeved on the optical shaft.

[0010] To prevent the I-beam from shifting during transport and to ensure the accuracy of the transport position, the centering mechanism further includes a double-slider guide rail. A first moving block and a second moving block are respectively connected to the two sliders of the double-slider guide rail. Rotatable auxiliary wheels are respectively installed on the opposite sides of the first moving block and the second moving block. The first moving block and the second moving block are connected by a tension spring.

[0011] To facilitate the entry of the I-beam, the centering mechanism further includes a connecting rod, a first adjusting rod, and a second adjusting rod. One end of the first adjusting rod and the second adjusting rod pass through the second moving block, and the first adjusting rod and the second adjusting rod are slidably connected to the second moving block. Limiting rings are connected to the ends of the first adjusting rod and the second adjusting rod, and the length of the first adjusting rod is greater than the length of the second adjusting rod. The middle position of the connecting rod is hinged to one end of the double slider guide rail, and the two ends of the connecting rod are movably connected to the first adjusting rod and the second adjusting rod, respectively.

[0012] To achieve automatic rust removal of H-beams, the rust removal mechanism further includes a rust removal mechanism mounting base. Inside the mounting base, a first grinding wheel and a third grinding wheel, arranged vertically, are rotatably mounted in the center. A rust removal motor is mounted above the mounting base. The output end of the rust removal motor is connected to the shaft of the first grinding wheel via a coupling. Grinding wheel assemblies are provided on both sides of the first and third grinding wheels. Each grinding wheel assembly includes a connecting shaft. Both ends of the connecting shaft are connected to the mounting base via bearings. A second grinding wheel is connected to the middle of the connecting shaft. A second gear is connected to the upper end of the connecting shaft, and a third gear is connected to the lower end of the connecting shaft. A first gear meshing with the second gear is connected to the shaft of the first grinding wheel, and a fourth gear meshing with the third gear is connected to the shaft of the third grinding wheel.

[0013] To heat and dry the coated I-beams and increase the efficiency of paint drying, a drying assembly is further provided on one side of the spraying mechanism. The drying assembly includes symmetrically arranged drying components, each comprising a housing with an air inlet slot. Inside the housing are heating elements corresponding to the air inlet slot, and a fan corresponding to the heating elements is also installed inside the housing.

[0014] In order to collect the dust generated during rust removal, reduce the harm of dust to the health of operators, and avoid dust pollution to the environment, the outer cover of the rust removal mechanism mounting base is further equipped with a protective cover, and the protective cover is equipped with a connecting pipe for connecting to the negative pressure dust removal device.

[0015] To achieve the painting of the I-beams, the painting mechanism further includes a painting mechanism mounting base, an outer shell covering the painting mechanism mounting base, a number of atomizing nozzles mounted on the painting mechanism mounting base, the atomizing nozzles being connected by a connecting pipe, and a box for storing paint located below the painting mechanism mounting base, a water pump being installed inside the box, and the connecting pipe being connected to the output end of the water pump.

[0016] Furthermore, in this invention, the method for implementing an automatic rust removal and painting device for I-beams includes the following steps:

[0017] (i) The I-beam is placed between the second support wheel group of the feeding mechanism and the pre-compression wheel of the pre-compression mechanism. The feeding motor drives the support wheel of the second support wheel group to rotate, thereby feeding the I-beam.

[0018] (ii) Under the action of the tension spring, the first and second moving blocks clamp the I-beam, thereby limiting and guiding the conveying of the I-beam, and conveying the I-beam backward in a centered position.

[0019] (III) The rust removal motor of the rust removal mechanism drives the first grinding wheel, the third grinding wheel and the two second grinding wheels to rotate, and grinds and removes rust from the side and groove surface of the I-beam;

[0020] (iv) The water pump of the spraying mechanism pumps the paint out of the box and sprays it onto the surface of the I-beam through the atomizing nozzle to achieve rust prevention treatment of the I-beam.

[0021] (v) The H-beams that have been sprayed are heated and dried using the drying unit.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. This invention, through the setting of a feeding mechanism, a rust removal mechanism, and a spraying mechanism, realizes automated continuous operation of feeding, rust removal, and painting of I-beams. Compared with the traditional manual processing method, it supports 24-hour continuous operation, and the processing efficiency is increased by 5-10 times. It effectively improves the work efficiency of rust removal and painting of I-beams and reduces the labor intensity of workers.

[0024] 2. This invention uses a feeding motor to drive the support wheel to rotate, thereby conveying the I-beams. The conveying speed is adjustable from 0 to 30 mm / s, providing a smooth connection for subsequent rust removal and painting processes, and avoiding the inefficiency and risk of bumps from manual handling.

[0025] 3. The present invention uses a preload roller to press on top of the I-beam to prevent the I-beam from tilting during the conveying process, thereby ensuring the conveying stability of the I-beam.

[0026] 4. The present invention uses tension springs to clamp the first moving block and the second moving block on both sides of the I-beam, preventing the I-beam from shifting during the conveying process and ensuring the accuracy of the conveying position.

[0027] 5. This invention uses a first grinding wheel and a third grinding wheel to grind the upper and lower grooved surfaces of the I-beam, and two second grinding wheels to grind the sides of the I-beam, thereby achieving automatic rust removal of the I-beam.

[0028] 6. This invention uses a water pump to pressurize and deliver the coating to the atomizing nozzle, so that the coating can uniformly cover the surface of the I-beam 360°, and the coating thickness error is controllable.

[0029] 7. In the spraying process, excess paint that does not adhere to the surface of the I-beam flows back into the box, realizing paint recycling and reuse, and reducing paint waste.

[0030] 8. This invention uses a hydraulic rod to move the adjusting seat downwards, compressing the spring and using the spring's restoring force to apply pressure to the bearing seat, thereby causing the preload roller to press the I-beam tightly, ensuring the stable and smooth conveying of the I-beam.

[0031] 9. In this invention, when feeding the I-beam, the first moving block and the second moving block are moved outward by rotating the connecting rod, thereby facilitating the entry of the I-beam.

[0032] 10. The outer cover of the rust removal mechanism mounting base of the present invention is equipped with a protective cover, and the protective cover is equipped with a connecting pipe for connecting to the negative pressure dust removal device to collect the dust generated during rust removal, reduce the harm of dust to the health of operators, and avoid dust pollution of the environment. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the present invention.

[0034] Figure 2 This is a schematic diagram of the feeding mechanism of the present invention.

[0035] Figure 3 This is a schematic diagram of the pre-compression mechanism of the present invention.

[0036] Figure 4 This is a schematic diagram of the centering mechanism of the present invention.

[0037] Figure 5 This is a schematic diagram of the rust removal mechanism of the present invention.

[0038] Figure 6 This is a schematic diagram of the rust removal mechanism after the protective cover of the present invention is removed.

[0039] Figure 7 This is a schematic diagram of the spraying mechanism after the outer shell of the present invention is removed.

[0040] Figure 8 This is a cross-sectional view of the drying component in the drying assembly of the present invention.

[0041] Figure 9 This is a schematic diagram of the centering mechanism in another embodiment of the present invention.

[0042] In the diagram: 1. Frame; 2. Pre-compression mechanism; 21. Sliding seat; 22. Shaft seat; 23. Support shaft; 24. Adjusting seat; 25. Optical shaft; 26. Hydraulic rod; 27. Spring; 28. Pre-compression wheel; 29. ​​Support seat; 210. Limiting groove; 3. Rust removal mechanism; 31. Protective cover; 32. Connecting pipe; 33. Rust removal mechanism mounting seat; 34. First grinding wheel; 35. First gear; 36. Rust removal motor; 37. Second gear; 38. Connecting shaft; 39. Second grinding wheel; 310. Third grinding wheel; 311. Third gear; 312. Fourth gear; 4. Spraying mechanism; 41. Spraying mechanism mounting seat; 42. Atomizing nozzle ; 43. Box body; 44. Connecting pipe; 5. First support wheel group; 6. Centering mechanism; 61. Double slider guide rail; 62. First moving block; 63. First adjusting rod; 64. Tension spring; 65. Connecting rod; 66. Second adjusting rod; 67. Auxiliary wheel; 68. Second moving block; 69. Limiting ring; 610. Centering motor; 611. Centering rack; 612. Centering gear; 7. Feeding mechanism; 71. Feeding motor; 72. Drive sprocket; 73. Transmission chain; 74. Mounting shaft; 75. Support wheel; 76. Driven sprocket; 8. Drying assembly; 81. Box body; 82. Air inlet slot; 83. Heating element; 84. Fan. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] In the description of this invention, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used merely for distinction in description and have no special meaning.

[0047] Example 1

[0048] Please see Figures 1-8 This embodiment provides the following technical solution: an automatic rust removal and painting equipment for I-beams, including a frame 1, a feeding mechanism 7 installed at one end of the frame 1, and a pre-pressing mechanism 2 installed above the feeding mechanism 7. A centering mechanism 6 is provided on one side of the feeding mechanism 7 above the frame 1, a rust removal mechanism 3 is provided on one side of the centering mechanism 6, a painting mechanism 4 is provided on one side of the rust removal mechanism 3, and first support wheel sets 5 are provided on both sides of the painting mechanism 4.

[0049] By adopting the above technical solution, the present invention realizes the automated continuous operation of feeding, rust removal and painting of I-beams through the setting of feeding mechanism 7, rust removal mechanism 3 and painting mechanism 4. Compared with the traditional manual processing method, it supports 24-hour continuous operation, and the processing efficiency is increased by 5-10 times. It effectively improves the work efficiency of rust removal and painting of I-beams and reduces the labor intensity of workers.

[0050] Specifically, the feeding mechanism 7 includes a feeding motor 71 and three second support wheel sets. The feeding motor 71 is a 180W speed-regulating motor. The output end of the feeding motor 71 is equipped with a drive sprocket 72. The second support wheel sets include a mounting shaft 74, which is a 6061-T6 aluminum rod with a diameter of 20mm, capable of withstanding concentrated loads (force at the center point). Based on bending strength calculations, the maximum lateral load of a single aluminum bar is approximately 863 N (approximately 88 kg). Under deflection checks, a single aluminum bar can bear approximately 264 N (approximately 27 kg) under allowable deflection (L / 200 = 2.5 mm). Three aluminum bars working together can bear a load of 81 kg, meeting the conveying requirements of I-beams of different specifications. The two ends of the mounting shaft 74 are mounted on the frame 1 via bearings with seats. A support wheel 75 is connected to the middle position of the mounting shaft 74. The support wheel 75 is made of rubber. A driven sprocket 76 corresponding to the driving sprocket 72 is also mounted on the mounting shaft 74. The driven sprocket 76 and the driving sprocket 72 are connected by a transmission chain 73.

[0051] By adopting the above technical solution, the feeding motor 71 drives the support wheel 75 to rotate, thereby realizing the conveying of the I-beam. The conveying speed can be adjusted from 0 to 30 mm / s, providing a smooth connection for subsequent rust removal and painting processes, and avoiding the inefficiency and risk of bumps from manual handling.

[0052] Specifically, the pre-compression mechanism 2 includes two oppositely arranged sliding seats 21, a shaft seat 22 sliding on the sliding seats 21, a support shaft 23 connecting the two shaft seats 22, and a pre-compression wheel 28 connected to the middle position of the support shaft 23 via a bearing. The pre-compression wheel 28 is made of rubber.

[0053] By adopting the above technical solution, the preload roller 28 is pressed on top of the I-beam to prevent the I-beam from tilting during the conveying process, thereby ensuring the conveying stability of the I-beam.

[0054] Specifically, the centering mechanism 6 includes a double slider guide rail 61. A first moving block 62 and a second moving block 68 are respectively connected to the two sliders of the double slider guide rail 61. Rotatable auxiliary wheels 67 are respectively installed on the opposite sides of the first moving block 62 and the second moving block 68. The first moving block 62 and the second moving block 68 are connected by a tension spring 64.

[0055] By adopting the above technical solution, the first moving block 62 and the second moving block 68 are clamped on both sides of the I-beam by the tension spring 64, which prevents the I-beam from shifting during the conveying process and ensures the accuracy of the conveying position.

[0056] Specifically, the rust removal mechanism 3 includes a rust removal mechanism mounting base 33. Inside the mounting base 33, a first grinding wheel 34 and a third grinding wheel 310 are rotatably positioned vertically. A rust removal motor 36 is mounted above the mounting base 33. The rust removal motor 36 is a 0.4kW servo motor with a rated speed typically of 2800 r / min and a maximum torque rated multiple of 2.3. The output end of the rust removal motor 36 is connected to the shaft of the first grinding wheel 34 via a coupling. Grinding wheel assemblies are provided on both sides of the first grinding wheel 34 and the third grinding wheel 310. Each grinding wheel assembly includes a connecting shaft 38. Both ends of the connecting shaft 38 are connected to the rust removal mechanism mounting base 33 via bearings. A second grinding wheel 39 is connected to the middle of the connecting shaft 38, and a second gear 37 is connected to the upper end of the connecting shaft 38. The lower end of the connecting shaft 38 is connected to the third gear 311. The shaft of the first grinding wheel 34 is connected to the first gear 35, which meshes with the second gear 37. The shaft of the third grinding wheel 310 is connected to the fourth gear 312, which meshes with the third gear 311. The first gear 35 and the fourth gear 312 are steel gears with a module of 4, 26 teeth, and a thickness of 30 mm. The second gear 37 and the third gear 311 are nylon fiberglass gears with a module of 4, 26 teeth, and a thickness of 20 mm. After strength verification, the tangential force of the gears is about 24.4 N, the bending stress of the nylon fiberglass gears is about 2.0 MPa (far lower than its allowable bending strength of 50-150 MPa), and the contact stress is within the allowable range of 20-40 MPa, ensuring that the gear system transmission is stable and reliable during the rust removal process, with no risk of wear.

[0057] By adopting the above technical solution, the upper and lower grooved surfaces of the I-beam are ground by the first grinding wheel 34 and the third grinding wheel 310, and the sides of the I-beam are ground by the two second grinding wheels 39, thereby achieving automatic rust removal of the I-beam.

[0058] Specifically, the spraying mechanism 4 includes a spraying mechanism mounting base 41, which is covered by a housing. Six atomizing nozzles 42 are mounted on the spraying mechanism mounting base 41. The six atomizing nozzles 42 are symmetrically arranged and their angles are adjustable. The six atomizing nozzles 42 are connected by a connecting pipe 44. A box 43 for storing paint is provided below the spraying mechanism mounting base 41. A water pump with a power of 120W is installed inside the box 43. The connecting pipe 44 is connected to the output end of the water pump. A filter screen is provided at the feed end of the water pump to filter out any impurities that may be present in the paint.

[0059] By adopting the above technical solution, the paint is pressurized and delivered to the atomizing nozzle 42 by a water pump, so that the paint can uniformly cover the surface of the I-beam 360°, and the coating thickness error can be controlled. During the spraying process, excess paint that does not adhere to the surface of the I-beam flows back into the housing 43, realizing paint recycling and reuse, and reducing paint waste.

[0060] Example 2

[0061] The difference between this embodiment and embodiment 1 is as follows: Specifically, a support seat 29 is installed on the upper end of the sliding seat 21, a hydraulic rod 26 is installed on the support seat 29, an adjusting seat 24 located above the shaft seat 22 slides on the sliding seat 21, the adjusting seat 24 and the shaft seat 22 are respectively provided with matching limiting grooves 210, the output end of the hydraulic rod 26 is connected to the adjusting seat 24, two optical shafts 25 are connected to the shaft seat 22, the adjusting seat 24 is slidably connected to the optical shafts 25, and a spring 27 located above the shaft seat 22 is sleeved on the optical shafts 25.

[0062] By adopting the above technical solution, the hydraulic rod 26 drives the adjusting seat 24 to move downward, compressing the spring 27. The restoring force of the spring 27 applies pressure to the bearing seat 22, thereby pressing the preload roller 28 against the I-beam, ensuring stable and smooth conveying of the I-beam. By controlling the extension stroke of the hydraulic rod 26, the pressing force of the preload roller 28 on the I-beam can be adjusted. When the hydraulic rod 26 retracts to its reset position, with the cooperation of the two limit grooves 210, the adjusting seat 24 drives the bearing seat 22 to reset upward, causing the preload roller 28 to reset upward.

[0063] Example 3

[0064] like Figure 4 As shown, this embodiment differs from Embodiment 1 in that: specifically, the centering mechanism 6 further includes a connecting rod 65, a first adjusting rod 63, and a second adjusting rod 66. One end of the first adjusting rod 63 and the second adjusting rod 66 respectively passes through the second moving block 68, and the first adjusting rod 63 and the second adjusting rod 66 are slidably connected to the second moving block 68. Limiting rings 69 are connected to the ends of the first adjusting rod 63 and the second adjusting rod 66 respectively, and the length of the first adjusting rod 63 is greater than the length of the second adjusting rod 66. The middle position of the connecting rod 65 is connected to one end of the double slider guide rail 61 by a pin. The two ends of the connecting rod 65 are movably connected to the first adjusting rod 63 and the second adjusting rod 66 respectively. The ends of the first adjusting rod 63 and the second adjusting rod 66 are provided with U-shaped grooves, and the end of the connecting rod 65 is provided with a waist groove. The end of the connecting rod 65 is embedded in the U-shaped groove, and the pin passes through the adjusting rod and the waist groove to achieve a movable connection.

[0065] By adopting the above technical solution, when feeding the I-beam, the first moving block 62 and the second moving block 68 are moved outward by rotating the connecting rod 65, which facilitates the entry of the I-beam.

[0066] Example 4

[0067] like Figure 9As shown, this embodiment differs from embodiment 3 in that: specifically, the centering mechanism 6 further includes a centering motor 610, a first adjusting rod 63, and a second adjusting rod 66. A centering gear 612 is connected to the output end of the centering motor 610. One end of the first adjusting rod 63 and the second adjusting rod 66 passes through the second moving block 68, and the first adjusting rod 63 and the second adjusting rod 66 are slidably connected to the second moving block 68. Limiting rings 69 are connected to these ends of the first adjusting rod 63 and the second adjusting rod 66, and the length of the first adjusting rod 63 is greater than the length of the second adjusting rod 66. The limiting rings 69 are used for limiting. The other ends of the first adjusting rod 63 and the second adjusting rod 66 are respectively connected to centering racks 611 that mesh with the centering gear 612.

[0068] By adopting the above technical solution, when feeding the I-beam, the centering motor 610 drives the centering gear 612 to rotate, thereby driving the two centering racks 611 to move, causing the first moving block 62 and the second moving block 68 to move outward respectively, thus facilitating the entry of the I-beam.

[0069] Example 5

[0070] The difference between this embodiment and embodiment 1 is that, specifically, the outer cover of the rust removal mechanism mounting base 33 is provided with a protective cover 31, and the protective cover 31 is provided with a connecting pipe 32 for connecting to the negative pressure dust removal device. The negative pressure dust removal device is purchased from the market and is preferably a bag filter dust collector.

[0071] By adopting the above technical solutions, the dust generated during rust removal can be collected, reducing the harm of dust to the health of operators and avoiding dust pollution of the environment.

[0072] Example 6

[0073] The difference between this embodiment and embodiment 1 is that: specifically, a drying component 8 is provided on one side of the spraying mechanism 4. The drying component 8 includes drying elements arranged symmetrically on the top and bottom. The drying element includes a box 81. An air inlet slot 82 is provided on the box 81. An electric heating tube 83 corresponding to the air inlet slot 82 is installed inside the box 81. A fan 84 corresponding to the electric heating tube 83 is also installed inside the box 81.

[0074] By adopting the above technical solution, the H-beams that have been coated are heated and dried, thereby increasing the efficiency of coating drying.

[0075] Example 7

[0076] Furthermore, the implementation method of the automatic rust removal and painting equipment for I-beams according to the present invention includes the following steps:

[0077] (i) The I-beam is placed between the second support wheel group of the feeding mechanism 7 and the pre-compression wheel 28 of the pre-compression mechanism 2. The hydraulic rod 26 drives the adjusting seat 24 to move downward, so that the pre-compression wheel 28 presses the I-beam tightly. The feeding motor 71 drives the support wheel 75 of the second support wheel group to rotate, thereby realizing the feeding of the I-beam.

[0078] (ii) Under the force of the tension spring 64, the first moving block 62 and the second moving block 68 clamp the I-beam, thereby limiting and guiding the conveying of the I-beam, so that the I-beam is conveyed backward in the center.

[0079] (III) The rust removal motor 36 of the rust removal mechanism 3 drives the first grinding wheel 34, the third grinding wheel 310 and the two second grinding wheels 39 to rotate, and grind and remove rust from the side and groove surface of the I-beam.

[0080] (iv) The water pump of the spraying mechanism 4 pumps the paint out of the box 43 and sprays it onto the surface of the I-beam through the atomizing nozzle 42 to achieve rust prevention treatment of the I-beam.

[0081] (v) The H-beams that have been sprayed are heated and dried by the drying component 8.

[0082] In summary, this invention, through the arrangement of the feeding mechanism 7, the rust removal mechanism 3, and the spraying mechanism 4, achieves automated continuous operation of H-beam feeding, rust removal, and painting. Compared with traditional manual processing methods, it supports 24-hour continuous operation, increases processing efficiency by 5-10 times, effectively improves the efficiency of H-beam rust removal and painting, and reduces the labor intensity of workers. This invention uses the feeding motor 71 to drive the support wheel 75 to rotate, realizing the conveying of the H-beam, and the conveying speed is adjustable from 0-30mm / s, providing a smooth connection for subsequent rust removal and painting processes, avoiding the inefficiency and collision risks of manual handling. This invention uses the pre-pressure wheel 28 to press on the top of the H-beam to prevent the H-beam from tilting during conveying, thereby ensuring the stability of the H-beam conveying. This invention uses the tension spring 64 to clamp the first moving block 62 and the second moving block 68 on both sides of the H-beam to prevent the H-beam from shifting during conveying, ensuring the accuracy of the conveying position. This invention uses a first grinding wheel 34 and a third grinding wheel 310 to grind the upper and lower grooved surfaces of the H-beam, and two second grinding wheels 39 to grind the sides of the H-beam, achieving automatic rust removal. This invention uses a water pump to pressurize and deliver paint to the atomizing nozzle 42, ensuring the paint evenly covers the H-beam surface 360°, with controllable coating thickness error. During the spraying process, excess paint not adhering to the H-beam surface flows back into the housing 43, achieving paint recycling and reducing paint waste. This invention uses a hydraulic rod 26 to move the adjusting seat 24 downwards, compressing the spring 27. The restoring force of the spring 27 applies pressure to the shaft seat 22, thereby pressing the pre-pressure roller 28 firmly against the H-beam, ensuring stable and smooth transport of the H-beam. When loading the H-beam, rotating the connecting rod 65 moves the first moving block 62 and the second moving block 68 outwards, facilitating the entry of the H-beam. The rust removal mechanism mounting base 33 of the present invention is provided with a protective cover 31 on its outer cover. The protective cover 31 is provided with a connecting pipe 32 for connecting to the negative pressure dust removal device to collect the dust generated during rust removal, reduce the harm of dust to the health of operators, and avoid dust pollution of the environment.

[0083] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic rust removal and paint spraying apparatus for I-beams, characterized by: The machine includes a frame, a feeding mechanism installed at one end of the frame, a pre-compression mechanism installed above the feeding mechanism, a centering mechanism located on one side of the feeding mechanism above the frame, a rust removal mechanism located on one side of the centering mechanism, a spraying mechanism located on one side of the rust removal mechanism, and first support wheel sets located on both sides of the spraying mechanism.

2. The automatic rust removal and paint spraying apparatus for I-beams according to claim 1, characterized in that: The feeding mechanism includes a feeding motor and several second support wheel sets. The output end of the feeding motor is equipped with a drive sprocket. The second support wheel sets include a mounting shaft. Both ends of the mounting shaft are mounted on the frame through bearing seats. A support wheel is connected to the middle position of the mounting shaft. A driven sprocket corresponding to the drive sprocket is also mounted on the mounting shaft. The driven sprocket and the drive sprocket are connected by a transmission chain.

3. The automatic rust removal and paint spraying apparatus for I-beams according to claim 1, characterized in that: The preload mechanism includes two opposing sliding seats, a shaft seat that slides on the sliding seats, a support shaft that connects the two shaft seats, and a preload wheel that is connected to the middle position of the support shaft via a bearing.

4. The automatic rust removal and paint spraying apparatus for I-beams according to claim 3, wherein: A support seat is installed at the upper end of the sliding seat, and a hydraulic rod is installed on the support seat. An adjusting seat located above the shaft seat slides on the sliding seat. The adjusting seat and the shaft seat are respectively provided with matching limiting grooves. The output end of the hydraulic rod is connected to the adjusting seat. Two optical shafts are connected to the shaft seat. The adjusting seat and the optical shafts are slidably connected. A spring located above the shaft seat is sleeved on the optical shaft.

5. The automatic rust removal and paint spraying apparatus for I-beams according to claim 1, characterized in that: The centering mechanism includes a double slider guide rail. A first moving block and a second moving block are respectively connected to the two sliders of the double slider guide rail. Rotatable auxiliary wheels are respectively installed on the opposite sides of the first moving block and the second moving block. The first moving block and the second moving block are connected by a tension spring.

6. The automatic rust removal and paint spraying apparatus for I-beams according to claim 5, wherein: The centering mechanism further includes a connecting rod, a first adjusting rod, and a second adjusting rod. One end of the first adjusting rod and the second adjusting rod respectively passes through the second moving block. The first adjusting rod and the second adjusting rod are slidably connected to the second moving block. Limiting rings are connected to the ends of the first adjusting rod and the second adjusting rod respectively. The length of the first adjusting rod is greater than the length of the second adjusting rod. The middle position of the connecting rod is hinged to one end of the double slider guide rail. The two ends of the connecting rod are movably connected to the first adjusting rod and the second adjusting rod respectively.

7. The automatic rust removal and paint spraying apparatus for I-beams according to claim 1, wherein: The rust removal mechanism includes a rust removal mechanism mounting base. Inside the mounting base, a first grinding wheel and a third grinding wheel are rotatably positioned vertically in the middle. A rust removal motor is mounted above the mounting base. The output end of the rust removal motor is connected to the shaft of the first grinding wheel via a coupling. Grinding wheel assemblies are provided on both sides of the first and third grinding wheels. Each grinding wheel assembly includes a connecting shaft. Both ends of the connecting shaft are connected to the mounting base via bearings. A second grinding wheel is connected to the middle of the connecting shaft. A second gear is connected to the upper end of the connecting shaft, and a third gear is connected to the lower end of the connecting shaft. A first gear meshing with the second gear is connected to the shaft of the first grinding wheel, and a fourth gear meshing with the third gear is connected to the shaft of the third grinding wheel.

8. The automatic rust removal and paint spraying apparatus for I-beams according to claim 1, characterized in that: The spraying mechanism is provided with a drying component on one side. The drying component includes drying elements arranged symmetrically on the top and bottom. The drying element includes a box body with an air inlet slot on the box body. The box body is equipped with an electric heating tube corresponding to the air inlet slot and a fan corresponding to the electric heating tube is also installed inside the box body.

9. The automatic rust removal and paint spraying apparatus for I-beams according to claim 1, wherein: The spraying mechanism includes a spraying mechanism mounting base, which is covered by a housing. Several atomizing nozzles are mounted on the spraying mechanism mounting base and connected by a connecting pipe. A box for storing paint is provided below the spraying mechanism mounting base, and a water pump is installed inside the box. The connecting pipe is connected to the output end of the water pump.

10. The method of claim 1-9, wherein the method is implemented by an automatic rust removal and paint spraying apparatus for I-beams, characterized in that, Includes the following steps: (i) The I-beam is placed between the second support wheel group of the feeding mechanism and the pre-compression wheel of the pre-compression mechanism. The feeding motor drives the support wheel of the second support wheel group to rotate, thereby feeding the I-beam. (ii) Under the action of the tension spring, the first and second moving blocks clamp the I-beam, thereby limiting and guiding the conveying of the I-beam, and conveying the I-beam backward in a centered position. (III) The rust removal motor of the rust removal mechanism drives the first grinding wheel, the third grinding wheel and the two second grinding wheels to rotate, and grinds and removes rust from the side and groove surface of the I-beam; (iv) The water pump of the spraying mechanism pumps the paint out of the box and sprays it onto the surface of the I-beam through the atomizing nozzle to achieve rust prevention treatment of the I-beam. (v) The H-beams that have been sprayed are heated and dried using the drying unit.

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