CN-122006949-A - Energy-saving hub coating production line for flashing paint by utilizing waste heat of curing oven

Abstract

The invention belongs to the field of hub spraying, and particularly relates to an energy-saving hub coating production line for flashing paint by utilizing waste heat of a curing furnace. This utilize curing oven waste heat to carry out energy-saving wheel hub application production line that paint vehicle flash dried, through the first curing oven that sets up the second curing oven reaches the third curing oven, the spraying color paint room in the first spray booth and the priming paint room with spout the ground rail conveyer belt that is connected between the transparent paint room, pass from the outside of first curing oven to utilize the processing waste heat of first curing oven to spray color paint room and priming paint room and spout in the transparent paint room from the first spray booth, the wheel hub of just spraying carries out the surface paint vehicle flash dried. And a ground rail conveyor belt connected between the second paint spray booth and the third curing oven passes through the outer side of the third curing oven, so that the processing waste heat of the third curing oven is utilized to flash off the surface paint of the hub just sprayed in the second paint spray booth.

Inventors

• WANG XIAOAN

Assignees

• 安徽奥坤工贸有限公司

Dates

Publication Date

20260512

Application Date

20260325

Claims (6)

1. 1. The energy-saving hub coating production line for flashing paint by utilizing waste heat of a curing furnace comprises a pretreatment line (110), a dehydration drying furnace (120) and a workpiece treatment line, and is characterized in that the output end of the pretreatment line (110) is connected with the dehydration drying furnace (120) through a ground rail conveyor belt, and the dehydration drying furnace (120) is connected with the input end of the workpiece treatment line through the ground rail conveyor belt; the workpiece processing line comprises a first process section and a second process section which are sequentially connected in series; The first process section comprises a first grinding chamber (210), a first paint spraying chamber (220), a transparent paint spraying chamber (230), a paint surface drying furnace (240), a first curing furnace (250) and a first forced cooling belt (260), and all the components are sequentially connected in a conveying way through a ground rail conveyor belt; The second process section comprises a second grinding chamber (310), a powder spraying chamber (320), a powder cleaning chamber (330), a second curing furnace (340), a second forced cooling belt (350), a third grinding chamber (360), a second spray chamber (370), a third curing furnace (380) and a third forced cooling belt (390), wherein all the components are sequentially connected in a conveying way through a ground rail conveyor belt; The second grinding chamber (310) is connected with the first forced cooling belt (260) in a switching way through a mechanical arm and is used for receiving a workpiece from the first process section and conveying the workpiece to the second process section; A ground rail conveyor belt connected between the color paint spraying chamber and the primer spraying chamber in the first paint spraying chamber (220) and the transparent paint spraying chamber (230) passes through the outer side of the first curing furnace (250), and the surface paint of the freshly sprayed hub is flash-dried by utilizing the processing waste heat of the first curing furnace (250); A ground rail conveyor belt connected between the second paint spray booth (370) and the third curing oven (380) passes through the outer side of the third curing oven (380), and the surface paint of the freshly sprayed hub is flashed off by utilizing the processing waste heat of the third curing oven (380); the ground rail conveyor belt between the third grinding chamber (360) and the second paint spraying chamber (370) is arranged in the electrostatic dust collection section; the tail section of the first forced cooling belt (260) is provided with a visual quality control monitoring device.
2. 2. The energy-saving hub coating production line for flashing paint by utilizing waste heat of a curing oven as claimed in claim 1, wherein the ground rail conveyor belt comprises a rail, a driving motor and a bearing tool, and the bearing tool moves back and forth along the rail to convey workpieces; The mechanical arm is a multi-degree-of-freedom industrial robot, and a clamp which is adapted to the shape of a workpiece is arranged at the grabbing end of the mechanical arm; the first curing oven (250), the second curing oven (340) and the third curing oven (380) are infrared curing ovens; The first forced cooling belt (260), the second forced cooling belt (350) and the third forced cooling belt (390) are provided with air cooling devices; The input end of the first grinding chamber (210) is connected with the dehydration drying furnace (120), and the output end of the first forced cooling belt (260) is connected with the second grinding chamber (310) through a mechanical arm in a switching way.
3. 3. The energy-saving hub coating production line for flashing paint by utilizing waste heat of a curing oven according to claim 1, wherein the pretreatment line (110) comprises a hot water washing station, a pre-degreasing station, a groove entering spray degreasing station, a degreasing and immersing station, a groove exiting spray degreasing station, a countercurrent water washing station, a surface conditioning station, a countercurrent pure water washing station and a chromium-free passivation station; The first paint spray booth (220) is used for spraying a color paint booth and a primer booth, and the transparent paint spray booth (230) is used for spraying varnish; The powder spraying chamber (320) is used for spraying powder coating, and the powder cleaning chamber (330) is used for cleaning redundant powder on the surface of a workpiece; the third forced cooling belt (390) is the final output of the workpiece handling line.
4. 4. The energy-saving hub coating production line for flashing paint by utilizing waste heat of a curing oven as claimed in claim 1, wherein the tail section of the first process section of the workpiece processing line is provided with a manual painting repair and tracing working section (270).
5. 5. An energy efficient wheel hub painting line for paint flash drying with curing oven waste heat as claimed in claim 4, wherein said manual painting repair and tracing work section (270) is provided with a wheel hub fixture (271), said wheel hub fixture (271) comprising: the device comprises a weight base (2711), wherein the upper surface of the weight base (2711) is hinged with one end of a turnover hydraulic rod (2712), the other end of the turnover hydraulic rod (2712) is hinged with the bottom surface of a clamp main body (2713), the inner wall of the clamp main body (2713) is rotatably connected with a pneumatic clamping rod (2715), and the surface of the pneumatic clamping rod (2715) is fixedly connected with a rotary handle (2714).
6. 6. An energy efficient wheel hub painting line for flash drying paint using curing oven waste heat as claimed in claim 1, wherein the first grinding chamber (210), the second grinding chamber (310) and the third grinding chamber (360) are each provided with a wheel hub grinding mechanism, and the wheel hub grinding mechanism comprises: the mounting frame (401), the upper surface of the mounting frame (401) is fixedly connected with a motor (402), and the output end of the motor (402) penetrates through the upper surface of the mounting frame (401) and is fixedly connected with the end face of the upper fixing clamping rod (403); The polishing device comprises a lower fixed clamping rod (404), wherein the end face of the lower fixed clamping rod (404) is fixedly connected with the inner wall of a mounting frame (401), a screw rod sliding table (406) is arranged on the surface of the mounting frame (401), and a polishing roller (405) is rotatably connected to the surface of a moving block of the screw rod sliding table (406); the rubber sealing strip (407), the rubber sealing strip (407) is arranged on the surface of the screw rod sliding table (406); The end face of the upper fixed clamping rod (403) is fixedly connected with a fixed head (408), and the end face of the lower fixed clamping rod (404) is rotatably connected with the fixed head (408).

Description

Energy-saving hub coating production line for flashing paint by utilizing waste heat of curing oven Technical Field The invention relates to the technical field of hub spraying, in particular to an energy-saving hub coating production line for flashing paint by utilizing waste heat of a curing furnace. Background The hub is used as an important part of an automobile, and the surface coating quality of the hub directly influences the appearance quality, corrosion resistance and market value of the product. With the continuous improvement of the requirements of the automobile industry on the appearance quality of the hub, the hub surface treatment coating process is increasingly paid attention to. The existing energy-saving hub coating production line for flashing paint by utilizing waste heat of a curing furnace generally comprises basic procedures of pretreatment, coating, curing and the like. However, the conventional production line has the following problems: Firstly, the process section of the existing production line is not reasonably divided, and the paint coating and the powder coating often adopt independent production lines, so that the equipment is large in repeated investment, wide in occupied area and poor in production flexibility. When different coating processes need to be switched, the configuration of the production line needs to be readjusted, the replacement cost of the product is high, and the production efficiency is low. Secondly, the energy utilization efficiency of the existing production line is low. A large amount of waste heat generated by heating equipment such as a curing furnace is directly discharged, so that the waste heat is not effectively recycled, energy waste is caused, and the production cost is increased. Meanwhile, the heat energy utilization among the process sections lacks overall planning, and the procedures of preheating, flashing and the like still need additional configuration heating equipment. And moreover, the automation degree of the existing production line is not high, and particularly, workpieces among process sections are transferred by manual conveying or simple conveyor belts, so that a flexible transfer mechanism is lacked. The labor cost is increased, the surface of the workpiece is easily damaged in the transfer process, and the product quality is affected. In addition, the quality control means of the existing production line is relatively backward. The detection of the spraying defects mainly depends on manual visual inspection, the detection efficiency is low, the accuracy is poor, and the automatic statistics and analysis of defect data cannot be realized. Defective workpieces are often found after flowing into subsequent processes, resulting in waste of materials and man-hours. In addition, the polishing mechanism of the existing production line is single in function, and can only polish a certain specific part of the hub, so that the polishing mechanism cannot be compatible with hub products of various sizes. When the product specification is changed, the polishing tool is required to be replaced or the equipment parameters are required to be adjusted, the debugging time is long, and the production continuity is affected. Finally, the existing production line is not convenient enough for reworking treatment of defective products. When the defect of spraying is found to need paint repair or tracing, special fixture equipment is lacked, the operation of workers is inconvenient, the reworking efficiency is low, and the consistency of the quality of reworked products is difficult to ensure. In summary, the existing energy-saving hub coating production line for flashing paint by using waste heat of the curing oven has the technical problems of unsmooth process section connection, low energy utilization rate, low automation degree, imperfect quality control, poor product adaptability, inconvenient reworking of defective products and the like, and the energy-saving hub coating production line for flashing paint by using waste heat of the curing oven with high efficiency, energy conservation and stable quality is needed to solve the problems. In view of the above, we propose an energy-saving wheel hub coating production line for flashing paint by using waste heat of a curing oven Disclosure of Invention The invention mainly aims to provide an energy-saving hub coating production line for flashing paint by utilizing waste heat of a curing oven, which can solve the problems in the background art. In order to achieve the above purpose, the invention provides an energy-saving hub coating production line for flashing paint by utilizing waste heat of a curing furnace, which comprises a pretreatment line, a dehydration drying furnace and a workpiece treatment line, wherein the output end of the pretreatment line is connected with the dehydration drying furnace through a ground rail conveyor belt, and the dehydration drying furnace is connected with the input