TWI576168B - The method of painting and coating of fiber reinforced shell - Google Patents

Description

Method for painting fiber reinforced outer casing and lacquering device

The invention relates to a painting method and a painting device, in particular to a painting method and a painting device for a fiber-reinforced outer casing.

Referring to FIG. 1 , for the existing painting method, first, as shown in step 11, the article is painted, and as shown in step 12, the painted article is allowed to stand until the finger is pressed without leaving a fingerprint. After the time. Next, as shown in step 13, the articles after standing are baked. In this way, a painting operation is completed, and then steps 11 to 13 are repeated several times as needed to complete the painting operation of the product.

However, articles that have not been placed for more than the touch time after painting are not only easy to leave fingerprints due to finger touch, but also sticky dust or particles in the air, even the operator's hair. Therefore, the existing painting method will When the painted product is taken out, it is very easy to cause sputum due to dust, particles in the air or the hair of the operator.

In addition, the general paint has high viscosity and poor fluidity, which is unfavorable for the painting operation. Therefore, the existing paint needs to be mixed with a volatile solvent to improve the fluidity, so as to facilitate the painting operation. However, depending on the type of solvent and the mixing ratio, and the difference between the standing temperature and the length of time, the solvent mixed in the paint may not be completely waved before step 13. Hair, but wait until baking to volatilize from the paint, so it will create bubbles on the surface and become a fake.

Accordingly, it is an object of the present invention to provide a method of painting a fiber reinforced outer casing that avoids sputum production and improves yield.

Thus, the method of painting a fiber reinforced outer casing of the present invention comprises the steps of: (A) heating a fiber reinforced outer casing to a preheating temperature; (B) spraying a primer on the fiber reinforced outer casing; and (C) applying The fiber reinforced outer shell is baked to shape the primer.

Another object of the present invention is to provide a lacquering apparatus for a fiber reinforced outer casing which can avoid sputum generation and improve yield.

Thus, the lacquering apparatus of the fiber reinforced outer casing of the present invention comprises a conveying unit capable of transporting a fiber reinforced outer casing along a predetermined path, and a preheating unit disposed on the predetermined path to heat the fiber reinforced outer casing to a preheating temperature. a thermal unit, and a first spray unit disposed on the predetermined path.

The first spraying unit comprises a first dust-free coating machine spaced apart from the predetermined path and a first baking machine, the first dust-free coating machine capable of heating the fiber-reinforced outer casing to the preheating temperature A primer is sprayed thereon, and the first baking machine can heat and bake the fiber reinforced outer casing to shape the primer.

The invention has the beneficial effects that: by heating the fiber reinforced outer shell to the preheating temperature and then spraying the primer, the solvent in the primer can be quickly volatilized, which not only avoids bubbles during baking, but also does not need to be taken out. Keep away from dust, particles or operator hair in the air , thereby effectively avoiding the production of strontium to improve yield and yield.

200‧‧‧Fiber-reinforced casing

21‧‧‧Pretreatment unit

22‧‧‧Transportation unit

221‧‧‧ conveyor belt

222‧‧‧ Shell

223‧‧‧Gas filter mechanism

224‧‧‧ Tunnel

23‧‧‧Preheating unit

24‧‧‧First spray unit

241‧‧‧First dust-free coating machine

242‧‧‧First baking machine

25‧‧‧Second spraying unit

251‧‧‧Second dust-free coating machine

252‧‧‧second baking machine

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L‧‧‧ scheduled path

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a flow chart illustrating a method of painting an existing article; FIG. 2 is a schematic view showing fiber reinforced by the present invention. A preferred embodiment of the lacquering apparatus of the outer casing; and FIG. 3 is a flow chart illustrating a preferred embodiment of the lacquering method of the fiber reinforced outer casing of the present invention.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are represented by the same reference numerals.

Referring to FIG. 2, a preferred embodiment of the lacquering device of the fiber reinforced outer casing of the present invention comprises a pre-processing unit 21, a transport unit 22 corresponding to the pre-processing unit 21, and a pre-separation unit 21 The preheating unit 23, a first spraying unit 24 spaced apart from the preheating unit 23, and a second spraying unit 25 spaced apart from the first spraying unit 24. In the preferred embodiment, the pre-processing unit 21 is an infrared heating furnace.

The conveying unit 22 includes a conveyor belt 221, a casing 222 corresponding to the conveyor belt 221, and a gas filtering mechanism 223. The conveyor belt 221 cooperates with the casing 222 to define a pre-processing unit 21, The heat unit 23, the first spraying unit 24, and the second spraying unit 25 The tunnel 224, the gas filtering mechanism 223 is configured to input the filtered gas into the tunnel 224 to maintain the tunnel 224 at a positive pressure to avoid inhaling unfiltered air from the outside.

The first spray unit 24 includes a first dust-free coating machine 241 and a first baking machine 242, and the first dust-free coating machine 241 is interposed between the first baking machine 242 and the first dust-free coating machine 242. Preheating unit 23 between. The second dust spraying unit 25 includes a second dust-free coating machine 251 and a second baking machine 252, and the second dust-free coating machine 251 is interposed between the first baking machine 242 and Between the second toasters 252. In the preferred embodiment, the first dust-free coating machine 241 and the second dust-free coating machine 251 are 10,000-level dust-free coating spray booths, and the first baking machine 242 and the first The second baking machine 252 is a far infrared paint baking oven.

Referring to Fig. 3, a preferred embodiment of the method of painting a fiber reinforced outer casing of the present invention is described. Specifically, the lacquering method is carried out by the lacquering apparatus of Fig. 2.

Referring to Figures 2 and 3, first, as shown in step 31, the pretreatment unit 21 is used to remove dust and static electricity from the surface of a fiber reinforced outer casing 200. Then, the fiber reinforced outer casing 200 is transported along the predetermined path L by the conveyor belt 221 to sequentially pass through the preheating unit 23, the first dust-free coating machine 241, the first baking machine 242, and the first A second dust-free coating machine 251, and the second baking machine 252.

Next, as shown in step 32, the fiber reinforced casing 200 is heated to a preheating temperature by the preheating unit 23, the preheating temperature being between 60 ° C and 100 ° C. In the preferred embodiment, the preheating temperature is 75. °C.

Further, as shown in step 33, the first dust-free coating machine 241 is used to spray a primer on the fiber-reinforced outer casing 200. At this time, the fiber-reinforced outer casing 200 is cooled by spraying the primer. Up to 20 ° C to 30 ° C below the preheating temperature. In the preferred embodiment, the temperature of the fiber reinforced outer casing 200 is 55 °C.

Next, as shown in step 34, the first baking machine 242 is used to be higher than the temperature of the fiber-reinforced outer casing 200 after being sprayed by the first dust-free coating machine 241 by 20 ° C to 30 ° C. The fiber reinforced outer casing 200 is baked to shape the primer. In the preferred embodiment, the first toaster 242 heats the fiber reinforced outer casing 200 to 75 ° C to shape the primer.

Then, as shown in step 35, the second dust-free coating machine 251 is used to spray a paint on the primer of the fiber-reinforced outer casing 200. At this time, the fiber-reinforced outer casing 200 is sprayed with the paint. The temperature is lowered by between 20 ° C and 30 ° C below the temperature of the first toaster 242. In the preferred embodiment, the temperature of the fiber reinforced outer casing 200 is 55 °C.

Finally, as shown in step 36, the second baking machine 252 is used to be higher than the temperature of the fiber-reinforced outer casing 200 after being sprayed by the second dust-free coating machine 251 by 20 ° C to 30 ° C. The reinforced outer casing 200 is baked to shape the paint. In the preferred embodiment, the second toaster 252 heats the fiber reinforced outer casing 200 to 75 ° C to shape the paint.

The preheating unit 23 is heated to the preheating temperature to spray the primer, and the temperature difference between each step of the step 33 to the step 36 is between 20 ° C and 30 ° C, not only Enable primer The solvent in the solvent evaporates quickly, and it can also avoid bubbles during baking, and it does not need to be taken out for standing. Further, the gas filtering mechanism 223 is configured to input the filtered gas into the tunnel 224 to maintain the tunnel 224 at a positive pressure, thereby avoiding inhalation of unfiltered air to avoid dust, particles or operations in the air. The hair of the person, in turn, effectively avoids the production of cockroaches to increase yield and yield.

It should be particularly noted that, in the preferred embodiment, the first spraying unit 24 and the second spraying unit 25 are disposed at intervals, and in actual application, the first spraying unit 24 may be only required according to requirements. Or set up more spray units, you can still achieve the same effect.

In summary, the method and apparatus for painting a fiber-reinforced outer casing of the present invention can rapidly evaporate the solvent in the primer by heating the fiber-reinforced outer casing 200 to the preheating temperature and then spraying the primer. It avoids the generation of air bubbles during baking, and does not need to be taken out to avoid the dust, particles or the operator's hair in the air, thereby effectively avoiding the generation of cockroaches to improve the yield and the yield, so the invention can be achieved. The purpose.

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Claims (5)

A method of painting a fiber reinforced outer casing comprising the steps of: (A) heating a fiber reinforced outer casing to a preheating temperature of between 60 ° C and 100 ° C; and (B) reinforcing the outer shell of the fiber Spraying a primer, the temperature of the fiber reinforced outer casing is lower than the preheating temperature between 20 ° C and 30 ° C; (C) is higher than the fiber reinforced outer casing between 20 ° C and 30 ° C in the step (B) Temperature tempering the fiber reinforced outer shell to shape the primer; (D) spraying a primer on the primer of the fiber reinforced outer shell, the temperature of the fiber reinforced outer shell being lower than the fiber reinforced outer shell in the step (C) The temperature is between 20 ° C and 30 ° C; and (E) the fiber reinforced outer shell is baked at a temperature higher than between 20 ° C and 30 ° C of the fiber reinforced outer shell in the step (D) to shape the paint. The method of painting a fiber-reinforced outer casing according to claim 1, further comprising a step (F) before the step (A), the step (F) of removing dust and static electricity from the surface of the fiber-reinforced outer casing. A lacquering device for a fiber reinforced outer casing, comprising a conveying unit capable of transporting a fiber reinforced outer casing to move along a predetermined path; a preheating unit disposed on the predetermined path to heat the fiber reinforced outer casing to a preheating temperature The preheating temperature is between 60 ° C and 100 ° C; a first spraying unit comprising a first dust-free coating machine spaced apart from the predetermined path and a first baking machine, the first dust-free coating machine capable of reinforcing the fiber to the preheating temperature Spraying a primer on the outer casing to make the temperature of the fiber reinforced outer casing lower than the preheating temperature by 20 ° C to 30 ° C, the first baking machine can be higher than the fiber sprayed by the first dust-free coating machine Strengthening the temperature of the outer casing by heating at 20 ° C to 30 ° C to heat the outer shell to shape the primer; and a second spraying unit comprising a second dust-free chamber disposed on the predetermined path from the first baking machine a coating machine, and a second baking machine spaced apart from the second dust-free coating machine on the predetermined path, the second dust-free coating machine spraying a paint on the primer of the fiber-reinforced outer casing The fiber reinforced casing is made lower than the temperature of the first baking machine 242 by 20 ° C to 30 ° C, and the second baking machine can be higher than the temperature of the fiber reinforced casing after being sprayed by the second dust-free coating machine. The fiber reinforced outer shell is heated and baked at a temperature of from ° C to 30 ° C to shape the paint. The lacquering device of the fiber reinforced outer casing according to claim 3, further comprising a pretreatment unit for removing dust and static electricity on the surface of the fiber reinforced outer casing, wherein the conveying unit is transported through the pretreatment unit The fiber reinforced outer casing moves toward the preheating unit, and the preheating unit is located between the pretreatment unit and the first spraying unit. The lacquering device of the fiber reinforced outer casing according to claim 4, wherein the conveying unit comprises a conveyor belt for conveying the fiber reinforced casing along the predetermined path, a casing covering the conveyor belt, and a gas a body filtering mechanism, the conveyor belt cooperates with the outer casing to define a tunnel connecting the pretreatment unit, the preheating unit, the first dust-free coating machine, and the first baking machine, and the gas filtering mechanism is to filter The latter gas is fed into the tunnel to maintain the tunnel at a positive pressure.