Continuous powder coating production equipment of metal coils and plates and production method thereof

Abstract

The invention discloses continuous powder coating production equipment of metal coils and plates. The continuous powder coating production equipment comprises a coating curing section unit, wherein the coating curing section unit is provided with production coating units and a coating curing oven, the production coating units include a first production coating unit and a second production coating unit, a coating preheating oven is arranged between the two production coating units, and the coating curing oven is arranged behind the second production coating unit and is close to the second production coating unit. The invention further discloses a continuous powder coating production method of the metal coils and the plates. The continuous powder coating production method comprises the following steps of preparing the units, feeding, cleaning, coating electrostatic powder, preheating and curing coatings, and processing finished products. According to the continuous powder coating production equipment and the continuous powder coating production method, continuous electrostatic powder coating production of different colors can be performed on the upper surfaces and the lower surfaces of to-be-coated base materials, a movable powder room is provided, the continuous powder coating production equipment and the continuous powder coating production method have the advantages of short preheating and drying time, mechanization in dustproof protection, large coating area in unit time, low cost, low energy consumption, variety diversity, multiple purposes of one machine and the like, the production operating speed is increased to 150 meters per minute, and the market demand is satisfied.

Description

technical field [0001] The invention relates to a powder coating, in particular to continuous powder coating equipment for metal coils and plates and a production method thereof. Background technique [0002] The existing continuous powder coating equipment for metal coils and plates includes: an inlet section unit, a coating curing section unit and an outlet section unit arranged continuously on the production line. The unit of the coating curing section includes: a powder room, multiple sprayer mobile vehicles that cooperate with the powder room, and a coating curing furnace arranged adjacent to the powder room. Usually, the powder booth and the sprayer mobile car that cooperates with it are called a production spraying group. In production, only single-color electrostatic powder spraying can be carried out on the coated substrate, that is: the sprayed product is single-color front, single-color back or single-color Color up and down. in: [0003] The powder room is fix...

AI Technical Summary

Problems solved by technology

[0008] 1. It is impossible to continuously spray electrostatic powder of different colors on the upper and lower surfaces of the coated substrate at the same time

[0009] Since only one set of production spraying group is designed on the production line, when the upper and lower surfaces are sprayed at the same time, one set of production spraying group can only spray one color, and it is impossible to continuously spray different colors on the upper and lower surfaces of the coated substrate

[0010] 2. The powder room cannot be fully applied to the production of high-speed continuous electrostatic powder spraying of metal materials

During production, it is inconvenient for operators to enter the interior of the room for cleaning or maintenance, and the machine is shut down for cleaning or maintenance, because the substrate to be coated is still in the powder room, which hinders the work of the operators

[0012] Because the powder room cannot leave the production line, in continuous production, when a product of one color reaches a certain batch size and needs to be changed for color production, it is necessary to stop production for about 30 to 40 minutes before changing the color, that is, to implement intermittent work in continuous production system, affecting productivity

[0013] 3. Manual film covering and peeling off, low efficiency

[0014] During or after spraying, the cover protection of the surface that does not need to be sprayed is manually "covered beforehand and then peeled off", which has high work intensity and low efficiency, which affects the improvement of the operating speed of the unit in the coating curing section.

[0015] 4. The heating element of the coating curing furnace has a low heat transfer rate

It limits the increase of the operating speed of the unit in the coating curing section. For example, the speed of the unit in the powder coating curing section in Europe is below 30 m / min, and the production efficiency is extremely low.

[0018] In addition, as a high-quality energy source, electricity produces the same heat energy, and the consumption cost of low-quality energy sources such as gas is much higher.

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