Axle painting pretreatment device and pretreatment method

Abstract

The invention belongs to the technical field of motor train unit axle painting pretreatment, and particularly relates to an axle painting pretreatment device and method. In the device, a photoelectric switch assembly, a proximity sensor assembly, a speed reducer and a pretreatment unit are all connected with an electric control cabinet, and a chain transmission assembly is connected with the speed reducer; one side of the transmission end of the chain transmission assembly is connected with the photoelectric switch assembly, one side of the driven end of the chain transmission assembly is connected with the proximity sensor assembly, the dry brush assembly, the cleaning fluid spraying assembly, the wet brush assembly, the spraying assembly, the water absorption assembly and the air drying assembly are all fixed in the portal frame assembly, and the outer cover assembly is arranged above the chain transmission assembly; the cleaning liquid spraying assembly is connected with the industrial cleaning liquid purifying machine, the air drying assembly is connected with the high-pressure air heater, and the chain transmission assembly, the speed reducer and the portal frame assembly are all fixed to the ground. By means of the device and the treatment method, it is guaranteed that the axle is thoroughly cleaned and fully dried, intelligent control is achieved, efficiency is improved, and secondary pollution of the surrounding environment to the axle is prevented.

Description

Technical Field

[0001] The invention belongs to the technical field of axle painting pretreatment of electric train sets, and in particular relates to an axle painting pretreatment device and a pretreatment method. Background Art

[0002] The axles of EMUs need to be treated before painting, including cleaning and drying. The overall process is referred to as pre-painting treatment. First, the dust, magnetic powder and other solid particles on the surface of the axle body and the residual liquid mixed dirt on the surface must be wiped and cleaned, and then dried. At present, it mainly relies on manual cleaning and drying. Due to the complex shape and surface of the EMU axles, large volume, and difficulty in cleaning, the poor flexibility of manual cleaning results in incomplete cleaning and subsequent insufficient drying, which makes the axle surface of poor quality after painting, the paint is easy to fall off during use, the axle is corroded, and the service life of the axle is affected. In addition, in the actual cleaning and drying process, the cleaning agent causes secondary pollution to the surrounding environment, affecting the pre-treatment effect. Summary of the invention

[0003] The purpose of the present invention is to provide an axle painting pretreatment device and a pretreatment method to solve the problems in the prior art of complex shape and surface of motor vehicle axles, large volume, poor flexibility in manual cleaning and drying, and secondary pollution of the surrounding environment by cleaning agents.

[0004] In order to achieve the above object, the present invention adopts the following technical scheme: A pre-treatment device for axle painting, comprising a chain drive unit, a pre-treatment unit, an electronic control unit and an auxiliary treatment unit, wherein the chain drive unit comprises a chain drive assembly and a reducer, the pre-treatment unit comprises a dry brush assembly, a spray cleaning liquid assembly, a wet brush assembly, a spray assembly, a water absorption assembly, an air drying assembly and a gantry assembly, the electronic control unit comprises a photoelectric switch assembly, a proximity sensor assembly and an electric control cabinet; the auxiliary treatment unit comprises an industrial dust purifier, an industrial cleaning liquid purifier and a high-pressure hot air blower; the photoelectric switch assembly, the proximity sensor assembly, the reducer and the pre-treatment unit are all connected to the electric control cabinet, the chain drive assembly is connected to the reducer, one side of the transmission end of the chain drive assembly is connected to the photoelectric switch assembly, and one side of the driven end is connected to the proximity sensor assembly, the dry brush assembly, the spray cleaning liquid assembly, the wet brush assembly, the spray assembly, the water absorption assembly and the air drying assembly are all fixed in the gantry assembly and placed above the chain drive assembly, the spray cleaning liquid assembly is connected to the industrial cleaning liquid purifier, the air drying assembly is connected to the high-pressure hot air blower, and the chain drive assembly, the reducer and the gantry assembly are all fixed on the ground.

[0005] Preferably, the dry brush assembly, the cleaning liquid spray assembly, the wet brush assembly, the spray assembly, the water absorption assembly and the air drying assembly are all provided with an outer cover assembly at the periphery, and the top of the outer cover assembly is connected to a hanging ring.

[0006] Preferably, the chain drive assembly includes a large sprocket and a structural frame, sprocket seats are fixed at both ends of the structural frame, a bearing seat is fixed in the left end sprocket seat, a chain adjustment seat and a bearing seat are fixed in the right end sprocket seat, a driving shaft is fixed in the left bearing seat, a driven shaft is fixed in the right bearing seat, the driving shaft is connected to the reducer, the structural frame passes through the large sprocket to support the large sprocket, the front and rear sides of the structural frame are fixed to the ground through support columns, the large sprocket is meshed with the chain, axle fixings are symmetrically installed on the front and rear surfaces of the chain, an automatic connecting piece is arranged at the center of the axle fixing, a limit mounting plate is arranged on the front side of the structural frame, a limit device is connected to the limit mounting plate, a motor mounting plate is arranged on the rear side of the structural frame, a rotating shaft motor is fixed on the motor mounting plate

[0007] Preferably, the gantry assembly includes a front frame and a rear frame, both of which are in a U-shape, and horizontal beams are arranged below the top beams of the front frame and the rear frame, and a plurality of mounting parts are connected between the top beams and the cross beams. The top ends of the front frame and the rear frame are connected by a plurality of longitudinal beams, and a cylinder is fixed on the top ends of the longitudinal beams, and the cylinder is connected to the outer cover assembly.

[0008] Preferably, the dry brush assembly includes a long shaft, a glass tube and a dry brush, the long shaft penetrates into the glass tube, a dry brush is arranged on the periphery of the glass tube, both ends of the glass tube are fixed to the long shaft through torque transmission sleeves, both ends of the long shaft are connected to bearing seats, the left end of the long shaft is connected to the motor through a coupling, and the motor is fixed on the bearing seat base, the wet brush assembly has the same structure as the dry brush assembly, and the bearing seat bases are fixed to the mounting parts of the front frame and the rear frame of the gantry assembly.

[0009] Preferably, the cleaning fluid spraying assembly includes a cleaning fluid spraying plate and a base, the bases are fixed at both ends of the cleaning fluid spraying plate, the fixed seats at both ends are fixed to the mounting parts or cross beams of the front frame and the rear frame of the gantry assembly, the cleaning fluid spraying plate is a hollow hexagonal cylinder, and the side walls and the bottom plate are provided with spray holes.

[0010] Preferably, the spray assembly includes a spray plate and a base, both ends of the spray plate are fixed with bases, the fixed seats at both ends are fixed to the mounting parts or cross beams of the front frame and rear frame of the gantry assembly, the spray plate is a hollow rectangular parallelepiped, and the bottom plate is provided with spray holes; the air-drying assembly includes a wind plate and a base, both ends of the wind plate are fixed with bases, and the fixed seats at both ends are fixed to the mounting parts or cross beams of the front frame and rear frame of the gantry assembly; the wind plate is a hollow rectangular parallelepiped, and the bottom plate is provided with air outlet holes.

[0011] Preferably, the water absorption component includes an axis core and a glass tube, the axis core penetrates into the glass tube, a water absorption roller is arranged on the periphery of the glass tube, both ends of the glass tube are fixed to the axis core through plugs, both ends of the axis core are connected to the bearing seat, the left end of the axis core is connected to the motor through a coupling, the motor is fixed on the bearing seat base, and the bearing seat base is fixed to the mounting part.

[0012] Preferably, there are three outer cover assemblies in total, each outer cover assembly includes two cover bodies, the top of the cover body is connected to a lifting ring, the cover bodies are connected to a cylinder connecting frame, the cylinder connecting frame is fixed to the cylinder at the top of the gantry assembly, the dry brush assembly and the wet brush assembly are externally provided with two cover bodies of the same outer cover assembly, the spray cleaning liquid assembly and the wet brush assembly share a cover body, the spray assembly and the water absorption assembly are externally provided with two cover bodies of the same outer cover assembly, the air-drying assembly is externally provided with an outer cover assembly, and one of the cover bodies of the outer cover assembly is a spare cover body.

[0013] Based on the pre-processing method of the above device, the specific steps are as follows: S1: After the previous process is completed, the axle is transferred to the chain drive assembly of the chain drive unit of the pre-processing device. The axle fixing piece on the chain drive assembly fixes the axle. After the photoelectric switch assembly detects the transmission signal, the reducer starts to work. Driven by the reducer, the drive shaft of the chain drive assembly rotates, the large sprocket drives the chain, and the chain links on the chain mesh with the teeth of the large sprocket to drive the driven shaft, so that the axle is transferred to the pre-processing unit. The industrial dust purifier is turned on, and the electric control cabinet sets the program for each process and chain drive of the pre-processing unit. The reducer stops when each step of the pre-processing unit is carried out; S2: After the axle is transferred to the bottom of the dry brush assembly of the pre-processing unit, the automatic connector is connected to the rotating shaft motor, the axle rotates under the drive of the rotating shaft motor, the cylinder on the gantry assembly drives the outer cover assembly of the dry brush assembly to move downward, the outer cover assembly covers the dry brush assembly and the axle, and the dry brush assembly cleans the solid particles on the surface of the axle body by dry brushing. After the dry brushing step is completed, the cylinder drives the outer cover assembly of the dry brush assembly to move upward, and the automatic connector is disconnected from the rotating shaft motor; S3: The chain drive assembly transmits the axle to the bottom of the cleaning fluid spraying assembly, the automatic connector connects to the rotating shaft motor, the axle rotates under the drive of the rotating shaft motor, the cylinder drives the outer cover assembly of the cleaning fluid spraying assembly to move downward, while the axle rotates, the cleaning fluid spraying assembly sprays cleaning fluid on the axle surface through the cleaning fluid spraying plate, the industrial cleaning fluid purifier purifies and recycles the used cleaning fluid for multiple uses, after the cleaning fluid spraying step is completed, the cylinder drives the outer cover assembly of the cleaning fluid spraying assembly to move upward, and the automatic connector is disconnected from the rotating shaft motor; S4: The chain drive assembly transmits the axle to the bottom of the wet brush assembly, the automatic connector connects to the rotating shaft motor, the axle rotates under the drive of the rotating shaft motor, the cylinder drives the outer cover assembly of the wet brush assembly to move downward, while the axle rotates, the wet brush of the wet brush assembly contacts the surface of the axle to wipe the liquid mixed dirt on the axle body, after the wet brushing step is completed, the cylinder drives the outer cover assembly of the wet brush assembly to move upward, and the automatic connector is disconnected from the rotating shaft motor; S5: The chain drive assembly transmits the axle to the bottom of the spray assembly, the automatic connector connects to the rotating shaft motor, the axle rotates under the drive of the rotating shaft motor, the cylinder drives the outer cover assembly of the spray assembly to move down, while the axle rotates, the spray plate of the spray assembly cleans the axle body, after the spraying step is completed, the cylinder drives the outer cover assembly of the spray assembly to move up, and the automatic connector is disconnected from the rotating shaft motor; S6: The chain drive assembly transmits the axle to the bottom of the water absorption assembly, the automatic connector connects to the rotating shaft motor, the axle rotates under the drive of the rotating shaft motor, the cylinder drives the outer cover assembly of the water absorption assembly to move downward, and the water absorption roller of the water absorption assembly absorbs water droplets from the shaft body. After the water absorption step is completed, the cylinder drives the outer cover assembly of the water absorption assembly to move upward, and the automatic connector is disconnected from the rotating shaft motor; S7: The chain drive assembly transmits the axle to the bottom of the air-drying assembly, the automatic connector connects to the rotating shaft motor, the axle rotates under the drive of the rotating shaft motor, the cylinder drives the outer cover assembly of the air-drying assembly to move downward, the high-pressure hot air blower provides an air source for the air plate of the air-drying assembly, and the air plate completely dries the surface of the axle. After the air-drying step is completed, the cylinder drives the outer cover assembly of the air-drying assembly to move upward, and the automatic connector is disconnected from the rotating shaft motor; S8: After the pre-processing unit is completed, the chain drive assembly transmits the axle. When the proximity sensor assembly detects a signal, the axle enters the next process. The entire device can operate in a cycle to continuously pre-process the axle.

[0014] Compared with the prior art, the present invention has the following beneficial effects: (1) Each component of the pre-treatment unit is effectively isolated by the outer cover component to ensure that each cleaning step operates independently and does not interfere with each other. This not only improves the stability of the cleaning process, but also ensures the high consistency of each cleaning result and reduces the defective rate; (2) The gantry assembly uses a cylinder to drive the pre-treatment unit to accurately control the vertical movement of dry brushing, wet brushing, spraying, water absorption and air drying components, accurately fitting the axle surface for all-round cleaning, accurately positioning, and improving cleaning efficiency and quality; (3) Modular design of dry brush assembly, wet brush assembly, spray assembly, dry assembly and air drying assembly. Both the dry brush assembly and the wet brush assembly are rotated by a motor through a long shaft and a coupling. The dry assembly is rotated by a motor through a shaft core and a coupling. The bearing seat assembly is installed on the gantry, which realizes efficient and stable rotary cleaning, is easy to maintain and replace, and enhances the reliability and flexibility of the equipment. (4) The photoelectric switch, proximity sensor components and electric control cabinet are integrated to form an intelligent control system, which can realize the automatic start and stop of the device, greatly improving the smoothness and operation efficiency of the connection with the previous and next processes. The overall production line is more compact and orderly, reducing manual intervention and human errors; (5) Use industrial dust purification equipment to effectively purify the air during the cleaning process to ensure that the working environment is dust-free, which not only protects the accuracy of the cleaning equipment, but also protects the health of the workers, while preventing the negative impact of dust on the cleaning effect; (6) Used cleaning fluid can be efficiently purified and recycled through industrial cleaning fluid purifiers, significantly reducing the consumption of water resources and cleaning fluid, greatly reducing operating costs, and at the same time practicing the concept of green and sustainable development and contributing to environmental protection; (7) The spray assembly and air drying assembly adopt a large-area spray plate and air plate design to quickly complete the cleaning and drying of the axle surface in a short time, which not only improves the work efficiency, but also ensures thorough cleaning and surface drying, providing guarantee for subsequent processes; (8) The device and method adopt a step-by-step and refined cleaning process for different types of dirt, fully removing various types of solid and liquid mixed dirt on the surface of the shaft body, and significantly improving the cleanliness of the shaft body surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A top view of the structure of the present invention; Figure 2 It is a front view of the structure of the present invention; Figure 3 It is a front view of the chain transmission assembly structure of the present invention; Figure 4 A top view of the chain transmission assembly structure of the present invention; Figure 5 It is a three-view drawing of the gantry structure in the present invention; Figure 6 It is a top view and a front view of the dry brush assembly structure of the present invention; Figure 7 It is a three-view diagram of the structure of the cleaning liquid spraying assembly in the present invention; Figure 8 It is a top view and a front view of the wet brush assembly structure of the present invention; Fig. 9 It is a three-view drawing of the structure of the spray assembly in the present invention; Fig.10 It is a top view and a front view of the water absorption component structure in the present invention; Fig.11 It is a three-view drawing of the air-drying component structure in the present invention; Fig.12 3-view diagram of the outer cover assembly structure of the present invention.

[0016] Description of the accompanying drawings: 1, chain drive unit; 10, chain drive assembly; 101, large sprocket; 102, structural frame; 103, A sprocket seat; 104, B sprocket seat; 105, chain adjustment seat; 106, left bearing seat; 107, right bearing seat; 108, driving shaft; 109, driven shaft; 110, supporting column; 111, chain; 112, limit mounting plate; 113, limit device; 114, motor mounting plate; 115, rotating shaft motor; 116, axle fixings; 117, automatic connector; 11, reducer; 2, pre-processing unit; 20, dry brush assembly; 201, long shaft one; 202, glass tube one; 203, dry brush; 204, bearing seat one; 205, coupling one; 206, motor one; 21, spray cleaning fluid assembly; 211, spray cleaning fluid plate; 212, base one; 22, wet brush assembly; 221, long shaft two ; 222, glass tube 2; 223, wet brush; 224, bearing seat 2; 225, coupling 2; 226, motor 2; 23, spray assembly; 231, spray plate; 232, base 2; 24, water absorption assembly; 241, shaft core; 242, glass tube 3; 243, water absorption roller wire; 244, bearing seat 3; 245, coupling 3; 246, motor 3; 25, air drying assembly; 251, wind plate; 252, bottom Seat three; 26, gantry assembly; 261, front frame; 262, rear frame; 263, crossbeam; 264, longitudinal beam; 265, mounting parts; 266, cylinder; 27, outer cover assembly; 271, cover body; 272, cylinder connecting frame; 273, lifting ring; 3, industrial cleaning fluid purifier; 4, high-pressure hot air blower; 5, photoelectric switch assembly; 6, proximity sensor assembly; 7, electric control cabinet; 8, industrial dust purifier; 9, ground. DETAILED DESCRIPTION

[0017] The technical solution of the present invention is described clearly and completely below in conjunction with the accompanying drawings and embodiments.

[0018] like Figure 1-2As shown, an axle painting pre-treatment device includes a chain drive unit 1, a pre-treatment unit 2, an electronic control unit and an auxiliary treatment unit, the chain drive unit 1 includes a chain drive assembly 10 and a reducer 11, the pre-treatment unit 2 includes a dry brush assembly 20, a cleaning liquid spray assembly 21, a wet brush assembly 22, a spray assembly 23, a water absorption assembly 24, an air drying assembly 25 and a gantry assembly 26, the electronic control unit includes a photoelectric switch assembly 5, a proximity sensor assembly 6 and an electric control cabinet 7; the auxiliary treatment unit includes an industrial dust purifier 8, an industrial cleaning liquid purifier 3 and a high-pressure hot air blower 4; the photoelectric switch assembly 5, the proximity sensor assembly 6, the reducer 11 and the pre-treatment unit 2 are all connected to the electric control cabinet 7, the chain drive assembly 10 is connected to the reducer 11, and the transmission end side of the chain drive assembly 10 is connected to the photoelectric switch assembly 5, from The moving end side is connected to the proximity sensor assembly 6, the dry brush assembly 20, the spray cleaning liquid assembly 21, the wet brush assembly 22, the spray assembly 23, the water absorption assembly 24 and the air drying assembly 25 are all fixed in the gantry assembly 26 and placed above the chain drive assembly 10, the spray cleaning liquid assembly 21 is connected to the industrial cleaning liquid purifier 3, the air drying assembly 25 is connected to the high-pressure hot air blower 4, the chain drive assembly 10, the reducer 11 and the gantry assembly 26 are all fixed on the ground 9; the axle is transmitted through the chain drive assembly, and the dry brush assembly, the spray cleaning liquid assembly, the wet brush assembly, the spray assembly, the water absorption assembly and the air drying assembly are used to dry brush, wet brush, spray, absorb water and air dry the axle body to ensure that the axle is thoroughly cleaned and dried fully, and intelligent control is performed in combination with the electric control cabinet, the photoelectric switch assembly, etc., saving manpower and improving efficiency.

[0019] A further implementation of the present invention is as follows: a cover assembly 27 is arranged on the periphery of the dry brush assembly 20, the cleaning liquid spray assembly 21, the wet brush assembly 22, the spray assembly 23, the water absorption assembly 24 and the air drying assembly 25, and a lifting ring 273 is connected to the top of the cover assembly 27; the dry brush assembly, the wet brush assembly, the spray assembly, the water absorption assembly and the air drying assembly of the pre-treatment unit are isolated by the cover assembly, and each process is independent and does not affect each other, thereby preventing the surrounding environment from secondary contamination of the axle; the lifting ring is used to facilitate the lifting of the cover assembly when replacing the pre-treatment unit.

[0020] A further embodiment of the present invention is: Figure 3-4As shown, the chain drive assembly 10 includes a large sprocket 101 and a structural frame 102. The left end of the structural frame 102 is fixed with an A sprocket seat 103, and the right end is fixed with a B sprocket seat 104. A left bearing seat 106 is fixed in the A sprocket seat 103, and a chain adjustment seat 105 and a right bearing seat 107 are fixed in the B sprocket seat 104. A driving shaft 108 is fixed in the left bearing seat 106, and a driven shaft 109 is fixed in the right bearing seat 107. The driving shaft 108 is connected to the reducer 11. The structural frame 102 passes through the large sprocket 101 to support the large sprocket 101. The front and rear sides of the structural frame 102 are fixed to the ground 9 through support columns 110. The large sprocket 101 is meshed with the chain 111. Axle fixings 116 are symmetrically installed on the front and rear surfaces of the chain 111, and an automatic connecting piece 117 is arranged at the center of the axle fixing piece 116. A limit mounting plate 112 is arranged on the front side of the structural frame 102, and a limit device 113 is connected to the limit mounting plate 112. A motor mounting plate 114 is arranged on the rear side of the structural frame 102, and a rotating shaft motor 115 is fixed on the motor mounting plate 114; the axle is transmitted by installing the axle fixing piece on the chain, which facilitates the automatic connecting piece to connect the rotating shaft motor. The rotating shaft motor controls the rotation of the axle during the dry brushing, wet brushing, spraying, drying and air drying processes, thereby ensuring that the dry brushing, wet brushing, spraying, drying and air drying are completed thoroughly and improving the quality of pre-treatment.

[0021] A further embodiment of the present invention is: Figure 5 As shown, the gantry assembly 26 includes a front frame 261 and a rear frame 262. The front frame 261 and the rear frame 262 are both in a U-shape. A horizontal beam 263 is arranged below the top beams of the front frame 261 and the rear frame 262. A plurality of mounting parts 265 are connected between the top beam and the cross beam 263. The top ends of the front frame 261 and the rear frame 262 are connected by a plurality of longitudinal beams 264. The top ends of the longitudinal beams 264 are fixed with cylinders 266.

[0022] A further embodiment of the present invention is: Figure 5 , 6As shown in , 8, the dry brush assembly 20 includes a long shaft 201, a glass tube 202 and a dry brush 203, the long shaft 201 penetrates into the glass tube 202, the dry brush 203 is arranged on the periphery of the glass tube 202, both ends of the glass tube 202 are fixed to the long shaft 201 through a torque transmission sleeve, both ends of the long shaft 201 are connected to a bearing seat 204, the left end of the long shaft 201 is connected to a motor 206 through a coupling 205, and the motor 206 is fixed to the base of the bearing seat 204, and the wet brush assembly 22 includes a long shaft 221, a glass tube 222 and a wet brush 223, the long shaft 221 penetrates into the glass tube 222, the periphery of the glass tube 222 A wet brush 223 is provided, and both ends of a glass tube 222 are fixed to a long shaft 221 through a torque transmission sleeve, and both ends of the long shaft 221 are connected to a bearing seat 224, and the left end of the long shaft 221 is connected to a motor 226 through a coupling 225, and the motor 226 is fixed on the base of the bearing seat 224, and both the bearing seat 1 204 and the bearing seat 224 are fixed to the mounting parts 265 of the front frame 261 and the rear frame 262 of the gantry assembly 26; the dry brush assembly and the wet brush assembly are fixed by the mounting parts to improve the stability of the device, and the motor is used to control the rotation of the long shaft 1 and the long shaft 2 to perform dry brushing and wet brushing on the axle body, and the dry brushing and wet brushing are more thorough to improve the cleanliness.

[0023] A further embodiment of the present invention is: Figure 1 , 7 , 9, and 11, the cleaning liquid spraying assembly 21 includes a cleaning liquid spraying plate 211 and a base 212, the base 212 is fixed at both ends of the cleaning liquid spraying plate 211, the cleaning liquid spraying plate 211 is a hollow hexagonal column, the side wall and the bottom plate are provided with spray holes, and the base 212 at both ends are fixed to the cross beams 263 of the front frame 261 and the rear frame 262 of the gantry assembly 26; the spraying assembly 23 includes a spraying plate 231 and a base 232, the base 232 is fixed at both ends of the spraying plate 231, the spraying plate 231 is a hollow rectangular parallelepiped, the bottom plate is provided with spray holes, and the base 232 at both ends are fixed to the cross beams 263 of the front frame 261 and the rear frame 262 of the gantry assembly 26; the air-drying assembly 25 includes an air plate 251 and Base three 252, both ends of the wind plate 251 are fixed with base three 252, the wind plate 251 is a hollow rectangular parallelepiped, the bottom plate is provided with air outlets, and the base three 252 at both ends are fixed with the crossbeams 263 of the front frame 261 and the rear frame 262 of the gantry assembly 26; the cleaning liquid is sprayed on the axle by the spray cleaning liquid plate to improve the cleaning quality of the axle; the axle is sprayed with water by the spray plate to clean the dirt on the surface of the axle body, and the axle is fully rinsed to ensure cleanliness; the axle is blown and dried by the wind plate to ensure that no substance is left on the surface of the axle, so as to provide protection for the subsequent painting process, so that the axle surface is not easy to fall off and corroded after painting, thereby extending the service life of the axle; the axle rotates when spraying the cleaning liquid, spraying and air drying to ensure that each process is uniform and sufficient.

[0024] A further embodiment of the present invention is: Fig.10 As shown, the water absorption component 24 includes an axis core 241 and a glass tube three 242, the axis core 241 penetrates into the glass tube three 242, a water absorption roller 243 is arranged on the periphery of the glass tube three 242, both ends of the glass tube three 242 are fixed to the axis core 241 through plugs, both ends of the axis core 241 are connected to the bearing seat three 244, the left end of the axis core 241 is connected to the motor three 246 through the coupling three 245, the motor three 246 is fixed on the base of the bearing seat three 244, and the base of the bearing seat three 244 is fixed to the mounting part 265; the axis core is controlled to rotate by the motor three, so that the water absorption roller can completely absorb the axle shaft, thereby ensuring all-round water absorption and improving the water absorption quality.

[0025] Based on the pre-processing method of the device described in this embodiment, the specific steps are as follows: S1: After the previous process is completed, the axle is transferred to the chain drive assembly 10 of the chain drive unit 1 of the pre-processing device. The axle fixing piece 116 on the chain drive assembly 10 fixes the axle. After the photoelectric switch assembly 5 detects the transmission signal, the reducer 11 starts to work. Driven by the reducer 11, the drive shaft 108 of the chain drive assembly 10 rotates, the large sprocket 101 drives the chain 111, and the chain links on the chain 111 mesh with the teeth of the large sprocket 101, driving the driven shaft 109, so that the axle is transferred to the pre-processing unit 2, the industrial dust purifier 8 is turned on, and the electric control cabinet 7 sets the program for each process and chain drive of the pre-processing unit 2. The reducer 11 stops when each step of the pre-processing unit 2 is performed; S2: After the axle is transferred to the bottom of the dry brush assembly 20 of the pre-processing unit 2, the automatic connector 117 is connected to the rotating shaft motor 115, and the axle rotates under the drive of the rotating shaft motor 115. The cylinder 266 on the gantry assembly 26 drives the outer cover assembly 27 of the dry brush assembly 20 to move downward, and the outer cover assembly 27 covers the dry brush assembly 20 and the axle. The dry brush assembly 20 cleans the solid particles on the surface of the axle body through the dry brush 203. After the dry brushing step is completed, the cylinder 266 drives the outer cover assembly 27 of the dry brush assembly 20 to move upward, and the automatic connector 117 is disconnected from the rotating shaft motor 115; S3: The chain drive assembly 10 transmits the axle to the bottom of the cleaning liquid spraying assembly 21, and the automatic connector 117 connects to the rotating shaft motor 115. The axle rotates under the drive of the rotating shaft motor 115, and the cylinder 266 drives the outer cover assembly 27 of the cleaning liquid spraying assembly 21 to move downward. While the axle rotates, the cleaning liquid spraying assembly 21 sprays the cleaning liquid on the axle surface through the cleaning liquid spraying plate 211, and the industrial cleaning liquid purifier 3 purifies and recycles the used cleaning liquid for multiple uses. After the cleaning liquid spraying step is completed, the cylinder 266 drives the outer cover assembly 27 of the cleaning liquid spraying assembly 21 to move upward, and the automatic connector 117 is disconnected from the rotating shaft motor 115; S4: The chain drive assembly 10 transmits the axle to the bottom of the wet brush assembly 22, and the automatic connector 117 connects to the rotating shaft motor 115. The axle rotates under the drive of the rotating shaft motor 115, and the cylinder 266 drives the outer cover assembly 27 of the wet brush assembly 22 to move downward. While the axle rotates, the wet brush 223 of the wet brush assembly 22 contacts the surface of the axle to wipe the liquid mixed dirt on the axle body. After the wet brushing step is completed, the cylinder 266 drives the outer cover assembly 27 of the wet brush assembly 22 to move upward, and the automatic connector 117 is disconnected from the rotating shaft motor 115; S5: The chain drive assembly 10 transfers the axle to the bottom of the spray assembly 23, the automatic connector 117 connects to the rotating shaft motor 115, the axle rotates under the drive of the rotating shaft motor 115, the cylinder 266 drives the outer cover assembly 27 of the spray assembly 23 to move downward, while the axle rotates, the spray plate 231 of the spray assembly 23 cleans the axle body, after the spraying step is completed, the cylinder 266 drives the outer cover assembly 27 of the spray assembly 23 to move upward, and the automatic connector 117 is disconnected from the rotating shaft motor 115; S6: The chain drive assembly 10 transmits the axle to the bottom of the water absorption assembly 24, the automatic connector 117 connects to the rotating shaft motor 115, the axle rotates under the drive of the rotating shaft motor 115, the cylinder 266 drives the outer cover assembly 27 of the water absorption assembly 24 to move downward, and the water absorption roller 243 of the water absorption assembly 24 absorbs water droplets from the axle body. After the water absorption step is completed, the cylinder 266 drives the outer cover assembly 27 of the water absorption assembly 24 to move upward, and the automatic connector 117 is disconnected from the rotating shaft motor 115; S7: The chain drive assembly 10 transmits the axle to the bottom of the air-drying assembly 25, the automatic connector 117 connects to the rotating shaft motor 115, the axle rotates under the drive of the rotating shaft motor 115, the cylinder 266 drives the outer cover assembly 27 of the air-drying assembly 25 to move downward, the high-pressure hot air blower 4 provides a wind source for the wind plate 251 of the air-drying assembly 25, and the wind plate 251 completely dries the surface of the axle. After the air-drying step is completed, the cylinder 266 drives the outer cover assembly 27 of the air-drying assembly 25 to move upward, and the automatic connector 117 is disconnected from the rotating shaft motor 115; S8: After the pre-processing unit is completed, the chain drive assembly 10 transmits the axle. When the proximity sensor assembly 6 detects a signal, the axle enters the next process. The entire device can operate in a cycle to continuously pre-process the axle.

[0026] A further embodiment of the present invention is: Fig.12As shown, there are three outer cover assemblies 27, each of which includes two cover bodies 271, the top of the cover body 271 is connected to a lifting ring 273, the cover bodies 271 are connected to a cylinder connecting frame 272, the cylinder connecting frame 272 is fixed to the cylinder 266 at the top of the gantry assembly 26, the dry brush assembly 20 and the wet brush assembly 22 are externally provided with two cover bodies 271 of the same outer cover assembly 27, the spray cleaning liquid assembly 21 and the wet brush assembly 22 share a cover body 271, the spray assembly 23 and the water absorption assembly 24 are externally provided with two cover bodies 271 of the same outer cover assembly 27, the air drying assembly 25 is externally provided with a cover body 271 of an outer cover assembly 27, and one of the cover bodies 271 of the outer cover assembly is a spare cover body.

[0027] Based on the pre-processing method of the device described in this embodiment, the specific steps are as follows: S1: After the previous process is completed, the axle is transferred to the chain drive assembly 10 of the chain drive unit 1 of the pre-processing device. The axle fixing piece 116 on the chain drive assembly 10 fixes the axle. After the photoelectric switch assembly 5 detects the transmission signal, the reducer 11 starts to work. Driven by the reducer 11, the drive shaft 108 of the chain drive assembly 10 rotates, the large sprocket 101 drives the chain 111, and the chain links on the chain 111 mesh with the teeth of the large sprocket 101, driving the driven shaft 109, so that the axle is transferred to the pre-processing unit 2, the industrial dust purifier 8 is turned on, and the electric control cabinet 7 sets the program for each process and chain drive of the pre-processing unit 2. The reducer 11 stops when each step of the pre-processing unit 2 is performed; S2: After the axle is transferred to the bottom of the dry brush assembly 20 of the pre-processing unit 2, the automatic connector 117 is connected to the rotating shaft motor 115, and the axle rotates under the drive of the rotating shaft motor 115. The cylinder 266 on the gantry assembly 26 drives the outer cover assembly 27 common to the dry brush assembly 20 and the wet brush assembly 22 to move downward, and the outer cover assembly 27 covers the dry brush assembly 20, the spray cleaning liquid assembly 21, the wet brush assembly 22 and the axle. The dry brush assembly 20 cleans the solid particles on the surface of the axle body through the dry brush 203. After the dry brushing step is completed, the cylinder 266 drives the outer cover assembly 27 common to the dry brush assembly 20 and the wet brush assembly 22 to move upward, and the automatic connector 117 is disconnected from the rotating shaft motor 115; S3: The chain drive assembly 10 transmits the axle to the bottom of the cleaning liquid spraying assembly 21 and the wet brush assembly 22, and the automatic connector 117 connects to the rotating shaft motor 115. The axle rotates under the drive of the rotating shaft motor 115, and the cylinder 266 drives the outer cover assembly 27 common to the dry brush assembly 20 and the wet brush assembly 22 to move downward. While the axle rotates, the cleaning liquid spraying assembly 21 sprays the cleaning liquid on the axle surface through the cleaning liquid spraying plate 211, and the industrial cleaning liquid purifier 3 purifies and recycles the used cleaning liquid for multiple uses. After the cleaning liquid spraying step is completed, the wet brush 223 of the wet brush assembly 22 contacts the axle surface to wipe the liquid mixed dirt on the axle body. After the wet brushing step is completed, the cylinder 266 drives the outer cover assembly 27 common to the dry brush assembly 20 and the wet brush assembly 22 to move upward, and the automatic connector 117 is disconnected from the rotating shaft motor 115; S4: The chain drive assembly 10 transfers the axle to the bottom of the spray assembly 23, the automatic connector 117 connects to the rotating shaft motor 115, the axle rotates under the drive of the rotating shaft motor 115, the cylinder 266 drives the outer cover assembly 27 common to the spray assembly 23 and the water absorption assembly 24 to move downward, while the axle rotates, the spray plate 231 of the spray assembly 23 cleans the axle body, after the spraying step is completed, the cylinder 266 drives the outer cover assembly 27 common to the spray assembly 23 and the water absorption assembly 24 to move upward, and the automatic connector 117 is disconnected from the rotating shaft motor 115; S5: The chain drive assembly 10 transfers the axle to the bottom of the water absorption assembly 24, the automatic connector 117 connects to the rotating shaft motor 115, the axle rotates under the drive of the rotating shaft motor 115, the cylinder 266 drives the outer cover assembly 27 common to the spray assembly 23 and the water absorption assembly 24 to move downward, and the water absorption roller 243 of the water absorption assembly 24 absorbs water droplets from the axle body. After the water absorption step is completed, the cylinder 266 drives the outer cover assembly 27 common to the spray assembly 23 and the water absorption assembly 24 to move upward, and the automatic connector 117 is disconnected from the rotating shaft motor 115; S6: The chain drive assembly 10 transfers the axle to the bottom of the air-drying assembly 25, the automatic connector 117 connects to the rotating shaft motor 115, the axle rotates under the drive of the rotating shaft motor 115, the cylinder 266 drives the air-drying assembly 25 and the outer cover assembly 27 common to the spare shaft to move downward, the high-pressure hot air blower 4 provides a wind source for the air plate 251 of the air-drying assembly 25, the air plate 251 completely dries the surface of the axle, after the air-drying step is completed, the cylinder 266 drives the air-drying assembly 25 and the outer cover assembly 27 common to the spare shaft to move upward, and the automatic connector 117 is disconnected from the rotating shaft motor 115; S7: After the pre-processing unit is completed, the chain drive assembly 10 transmits the axle. When the proximity sensor assembly 6 detects a signal, the axle enters the next process. The entire device can operate in a cycle to continuously pre-process the axle.

Claims

1. A pre-treatment device for axle painting, characterized in that: It includes a chain drive unit, a pre-processing unit, an electronic control unit and an auxiliary processing unit, wherein the chain drive unit includes a chain drive assembly and a reducer, the pre-processing unit includes a dry brush assembly, a cleaning fluid spray assembly, a wet brush assembly, a spray assembly, a water absorption assembly, an air drying assembly and a gantry assembly, the electronic control unit includes a photoelectric switch assembly, a proximity sensor assembly and an electric control cabinet; the auxiliary processing unit includes an industrial dust purifier, an industrial cleaning fluid purifier and a high-pressure hot air blower; the photoelectric switch assembly, the proximity sensor assembly, the reducer and the pre-processing unit are all connected to the electric control cabinet, the chain drive assembly is connected to the reducer, the transmission end of the chain drive assembly is connected to the photoelectric switch assembly, and the driven end is connected to the proximity sensor assembly, the dry brush assembly, the cleaning fluid spray assembly, the wet brush assembly, the spray assembly, the water absorption assembly and the air drying assembly are all fixed in the gantry assembly and placed above the chain drive assembly, the cleaning fluid spray assembly is connected to the industrial cleaning fluid purifier, the air drying assembly is connected to the high-pressure hot air blower, and the chain drive assembly, the reducer and the gantry assembly are all fixed on the ground.

2. The axle pre-painting treatment device according to claim 1, characterized in that: The dry brush assembly, the cleaning liquid spray assembly, the wet brush assembly, the spray assembly, the water absorption assembly and the air drying assembly are all provided with an outer cover assembly at the periphery, and the top of the outer cover assembly is connected with a hanging ring.

3. The axle pre-painting treatment device according to claim 2, characterized in that: The chain transmission assembly includes a large sprocket and a structural frame, sprocket seats are fixed at both ends of the structural frame, a bearing seat is fixed in the left end sprocket seat, a chain adjustment seat and a bearing seat are fixed in the right end sprocket seat, a driving shaft is fixed in the left bearing seat, a driven shaft is fixed in the right bearing seat, the driving shaft is connected to the reducer, the structural frame passes through the large sprocket to support the large sprocket, the front and rear sides of the structural frame are fixed to the ground through support columns, the large sprocket is meshed with the chain, axle fixings are symmetrically installed on the front and rear surfaces of the chain, an automatic connecting piece is arranged at the center of the axle fixing, a limit mounting plate is arranged on the front side of the structural frame, a limit device is connected to the limit mounting plate, a motor mounting plate is arranged on the rear side of the structural frame, a rotating shaft motor is fixed on the motor mounting plate.

4. The axle pre-painting treatment device according to claim 3, characterized in that: The gantry assembly includes a front frame and a rear frame, both of which are in a U-shape, and horizontal beams are arranged below the top beams of the front frame and the rear frame, and a plurality of mounting parts are connected between the top beams and the cross beams. The top ends of the front frame and the rear frame are connected by a plurality of longitudinal beams, and a cylinder is fixed on the top ends of the longitudinal beams, and the cylinder is connected to the outer cover assembly.

5. The axle pre-painting treatment device according to claim 4, characterized in that: The dry brush assembly includes a long shaft, a glass tube and a dry brush. The long shaft penetrates into the glass tube. A dry brush is arranged on the periphery of the glass tube. Both ends of the glass tube are fixed to the long shaft through torque transmission sleeves. Both ends of the long shaft are connected to bearing seats. The left end of the long shaft is connected to the motor through a coupling. The motor is fixed on the bearing seat base. The wet brush assembly has the same structure as the dry brush assembly. The bearing seat bases are fixed to the mounting parts of the front frame and the rear frame of the gantry assembly.

6. The axle pre-painting treatment device according to claim 5, characterized in that: The cleaning liquid spraying assembly includes a cleaning liquid spraying plate and a base. The bases are fixed at both ends of the cleaning liquid spraying plate. The fixed seats at both ends are fixed to the mounting parts of the front frame and the rear frame of the gantry assembly. The cleaning liquid spraying plate is a hollow hexagonal cylinder, and the side walls and the bottom plate are provided with spray holes.

7. The axle pre-painting treatment device according to claim 6, characterized in that: The spray assembly includes a spray plate and a base, and the bases are fixed at both ends of the spray plate, and the fixed seats at both ends are fixed to the mounting parts of the front frame and the rear frame of the gantry assembly. The spray plate is a hollow rectangular parallelepiped, and the bottom plate is provided with spray holes; the air-drying assembly includes a wind plate and a base, and the bases are fixed at both ends of the wind plate, and the fixed seats at both ends are fixed to the mounting parts of the front frame and the rear frame of the gantry assembly; the wind plate is a hollow rectangular parallelepiped, and the bottom plate is provided with air outlet holes.

8. The axle pre-painting treatment device according to claim 7, characterized in that: The water absorption component includes an axis core and a glass tube. The axis core penetrates into the glass tube. A water absorption roller is arranged on the periphery of the glass tube. Both ends of the glass tube are fixed to the axis core through plugs. Both ends of the axis core are connected to the bearing seat. The left end of the axis core is connected to the motor through a coupling. The motor is fixed on the bearing seat base. The bearing seat base is fixed to the mounting part.

9. The axle pre-painting treatment device according to claim 8, characterized in that: The water absorption component includes an axis core and a glass tube. There are three outer cover components in total, each outer cover component includes two cover bodies. The top of the cover body is connected to a hanging ring, and the cover bodies are connected to a cylinder connecting frame. The cylinder connecting frame is fixed to the cylinder at the top of the gantry assembly. The dry brush assembly and the wet brush assembly are externally provided with two cover bodies of the same outer cover assembly. The spray cleaning liquid assembly and the wet brush assembly share a cover body. The spray assembly and the water absorption assembly are externally provided with two cover bodies of the same outer cover assembly. The air-drying assembly is externally provided with an outer cover assembly, and one of the cover bodies of the outer cover assembly is a spare cover body.

10. The pre-treatment method of the axle painting pre-treatment device according to claim 8, wherein the specific steps are as follows: S1: After the previous process is completed, the axle is transferred to the chain drive assembly of the chain drive unit of the pre-processing device. The axle fixing piece on the chain drive assembly fixes the axle. After the photoelectric switch assembly detects the transmission signal, the reducer starts to work. Driven by the reducer, the drive shaft of the chain drive assembly rotates, the large sprocket drives the chain, and the chain links on the chain mesh with the teeth of the large sprocket to drive the driven shaft, so that the axle is transferred to the pre-processing unit. The industrial dust purifier is turned on, and the electric control cabinet sets the program for each process and chain drive of the pre-processing unit. The reducer stops when each step of the pre-processing unit is carried out; S2: After the axle is transferred to the bottom of the dry brush assembly of the pre-processing unit, the automatic connector is connected to the rotating shaft motor, the axle rotates under the drive of the rotating shaft motor, the cylinder on the gantry assembly drives the outer cover assembly of the dry brush assembly to move downward, the outer cover assembly covers the dry brush assembly and the axle, and the dry brush assembly cleans the solid particles on the surface of the axle body by dry brushing. After the dry brushing step is completed, the cylinder drives the outer cover assembly of the dry brush assembly to move upward, and the automatic connector is disconnected from the rotating shaft motor; S3: The chain drive assembly transmits the axle to the bottom of the cleaning fluid spraying assembly, the automatic connector connects to the rotating shaft motor, the axle rotates under the drive of the rotating shaft motor, the cylinder drives the outer cover assembly of the cleaning fluid spraying assembly to move downward, while the axle rotates, the cleaning fluid spraying assembly sprays cleaning fluid on the axle surface through the cleaning fluid spraying plate, the industrial cleaning fluid purifier purifies and recycles the used cleaning fluid for multiple uses, after the cleaning fluid spraying step is completed, the cylinder drives the outer cover assembly of the cleaning fluid spraying assembly to move upward, and the automatic connector is disconnected from the rotating shaft motor; S4: The chain drive assembly transmits the axle to the bottom of the wet brush assembly, the automatic connector connects to the rotating shaft motor, the axle rotates under the drive of the rotating shaft motor, the cylinder drives the outer cover assembly of the wet brush assembly to move downward, while the axle rotates, the wet brush of the wet brush assembly contacts the surface of the axle to wipe the liquid mixed dirt on the axle body, after the wet brushing step is completed, the cylinder drives the outer cover assembly of the wet brush assembly to move upward, and the automatic connector is disconnected from the rotating shaft motor; S5: The chain drive assembly transmits the axle to the bottom of the spray assembly, the automatic connector connects to the rotating shaft motor, the axle rotates under the drive of the rotating shaft motor, the cylinder drives the outer cover assembly of the spray assembly to move down, while the axle rotates, the spray plate of the spray assembly cleans the axle body, after the spraying step is completed, the cylinder drives the outer cover assembly of the spray assembly to move up, and the automatic connector is disconnected from the rotating shaft motor; S6: The chain drive assembly transmits the axle to the bottom of the water absorption assembly, the automatic connector connects to the rotating shaft motor, the axle rotates under the drive of the rotating shaft motor, the cylinder drives the outer cover assembly of the water absorption assembly to move downward, and the water absorption roller of the water absorption assembly absorbs water droplets from the shaft body. After the water absorption step is completed, the cylinder drives the outer cover assembly of the water absorption assembly to move upward, and the automatic connector is disconnected from the rotating shaft motor; S7: The chain drive assembly transmits the axle to the bottom of the air-drying assembly, the automatic connector connects to the rotating shaft motor, the axle rotates under the drive of the rotating shaft motor, the cylinder drives the outer cover assembly of the air-drying assembly to move downward, the high-pressure hot air blower provides an air source for the air plate of the air-drying assembly, and the air plate completely dries the surface of the axle. After the air-drying step is completed, the cylinder drives the outer cover assembly of the air-drying assembly to move upward, and the automatic connector is disconnected from the rotating shaft motor; S8: After the pre-processing unit is completed, the chain drive assembly transmits the axle. When the proximity sensor assembly detects a signal, the axle enters the next process. The entire device can operate in a cycle to continuously pre-process the axle.

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