JPH07171454A - Rust preventing oil coating device - Google Patents

Abstract

PURPOSE:To effectively recycle a misty rust preventive oil while maintaining a good working environment in relation to a device for coating the various parts of an automobile with the rust preventive oil by continuously coating the work to save manpower due to mass production and preventing the excess misty oil from diffusing into a vacuum chamber from each cabin to be evacuated. CONSTITUTION:In the device for coating a work with a misty rust preventive oil, a rust preventive oil coating chamber 6 is provided to a horizontal frame 1 around a conveyor 2, a cabin 6a to be evacuated, etc., are furnished before and behind the chamber 6, and a fin 7 for collecting the misty oil is erected in the cabin along the conveyor 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rust preventive oil applicator for applying mist rust preventive oil for rust prevention to various parts (workpieces) such as automobiles.

[0002]

2. Description of the Related Art Generally, when applying rust preventive oil to parts for automobiles, etc., the rust preventive oil is sprayed in a rust preventive coating chamber.
Application is performed on the surfaces of the above components. However, in this case, since mist-like rust preventive oil is released to the outside from the inlet and outlet of the rust preventive coating chamber, in order to prevent this,
Air curtains and shutters are provided at entrances and exits.

[0003]

However, in the case where the former air curtain is provided as described above, a relatively lightweight work piece is moved from a position where it is lined up due to wind pressure to be randomly arranged, resulting in a uniform arrangement. Not only is it difficult to apply rust preventive oil, but there is also a problem that a large number of works must be fixed in advance by predicting the strength of wind pressure due to the air curtain.

On the other hand, the latter with a shutter is
There is a restriction on the opening and closing time of the shutters provided at the entrance and the exit of the anticorrosion coating chamber, and it is difficult to continuously supply the work and save labor in mass production.

Further, both of the above must be provided with air curtains or shutters at the entrance and the exit of the rust preventive coating chamber, and therefore auxiliary equipment such as a driving device for driving these are required, and it is difficult to provide them at low cost. is there.

The present invention solves the above-mentioned problems without the use of an air curtain or shutter.
An anticorrosion coating chamber is provided on the horizontal frame, and cabins that are decompressed to a negative pressure state are provided at the front and rear of the anticorrosion coating chamber,
Workpieces on the conveyor are continuously coated with mist-type rust preventive oil to save labor by mass production, and prevent rust preventive oil from spreading from each cabin to the outside to maintain a good working environment and excess mist. It is an object of the present invention to provide a rust preventive oil coating device in which waste rust preventive oil can be saved by collecting and reusing the rust preventive oil.

[0007]

According to the present invention, in a coating apparatus for coating a work with mist rust preventive oil, a rust preventive coating chamber is provided on a horizontal frame across a conveyer conveyor. Each of the cabins, which is decompressed to a negative pressure state, is provided in the front and back, and a fin for collecting mist rust preventive oil is erected in the interior of each of the cabins along the conveyor.

[0008]

According to the present invention, the rust-preventive oil previously supplied from the oil supply pump to the rust-preventive coating chamber is formed into a mist-like swirl flow in the rust-preventive coating chamber through a large number of spray nozzles provided in the supply pipe. And spray it onto the work on the transfer conveyor, and the mist-like rust-preventing oil that flows out from the inlet and outlet to the rust-prevention coating chamber is sucked into each depressurized cabin, where it is captured. It is adsorbed and collected by the collecting fins and collected in an oil tank through an oil pan so as not to escape to the outside of the room.

[0009]

The present invention will now be described with reference to the illustrated embodiments. In FIG. 3, reference numeral 1 is a horizontal frame that is long and thin in the front and rear in a coating device that coats the work w with a mist rust preventive oil, and a pair of front and rear transport conveyors 2 and 3 are provided above the horizontal frame 1. The w conveyors are connected to each other so as to convey w horizontally, and both conveyors 2 and 3 are driven by a drive motor 4 installed below the horizontal frame 1 via a belt 5. Further, an anticorrosion coating chamber 6 is provided on the upper part of the horizontal frame 1 so as to straddle one of the conveyors 2. The anticorrosion coating chamber 6 has a negative pressure chamber at the front and rear. The respective cabins 6a and 6b are provided, and inside the respective cabins 6a and 6b,
A mist rust preventive oil collecting fin 7 is erected so as to collect the mist rust preventive oil which is about to flow outside along the conveyor 2. That is, as shown in FIG. 1, the mist rust preventive oil collecting fins 7 are arranged inside the cabins 6a and 6b along the conveyor 2 and have a cross-shaped cross section and are vertically arranged. It is lined up.

Further, as shown in FIG. 2, an oil supply pump 8 is provided outside the rust preventive coating chamber 6, and the oil supply pump 8 is provided with a supply pipe 9 branched in a bifurcated shape. Vertical pipes are formed diagonally to each other in the rust preventive coating chamber 6 at the tip of the supply pipe, and a large number of spray nozzles 10 are attached to the vertical pipes. In addition, an oil pan 1 is provided on the horizontal frame 1 below the transport conveyor 2.
1 is obliquely installed in the central portion of the rust preventive coating chamber 6 so as to face each other, and an inclined portion 11a of the oil pan 11 is provided with a small hole 11b and a cutout portion 11c. Further, an oil tank 12 for rust preventive oil is provided in communication with the oil pan 11 at the lower portion 6c of the rust preventive coating chamber 6.
A suction pipe 13 of the oil supply pump 8 is connected to 2 so as to be immersed in rust preventive oil. Further, as shown in FIG. 4, a part of the suction pipe 13 has a plurality of air suction ports 1
The air suction pipe 14 having 4a is provided in each of the cabins 6a, 6
It is connected so as to depressurize b to form a negative pressure chamber,
A flow rate adjusting valve 16 is provided in a side passage 15 connecting the air suction pipe 14 to the suction pipe 13, so that the pressure inside the cabins 6a and 6b can be adjusted.

The operation of the present invention will be described below. When the oil supply pump 8 is driven, the rust preventive oil from the oil supply pump 8 is injected through the supply pipe 9 from each spray nozzle 10 while forming a swirl flow, and at the same time, each of the cabins 6 described above.
Air suction pipe 1 for sucking air in a and 6b from suction port 14a
4, and the inside of each of the cabins 6a and 6b is depressurized to a negative pressure state.

On the other hand, when the drive motor 4 is driven,
The work w previously placed on the conveyor 2 is conveyed in one direction through the cabin 6a, the rust preventive coating chamber 6 and the cabin 6b. Then, the work w of the conveyor 2 in the rust preventive coating chamber 6 is uniformly applied by the swirling flow of the atomized rust preventive oil sprayed from each spray nozzle 10 so as to surround it. Therefore, most of the rust preventive oil not applied to the work W gradually falls and is collected in the oil tank, while the mist rust preventive oil that is about to flow out from the inlet and the outlet of the rust preventive coating chamber 6 is the above-mentioned. The oil pan 1 is sucked into each of the cabins 6a and 6b, adhered and collected by the collecting fins 7,
It is collected in the oil tank 12 through 1 and is prevented from flowing out.

[0013]

As described above, according to the present invention, the anticorrosion coating chamber is provided on the horizontal frame across the transfer conveyor, and the cabins which are decompressed to the negative pressure state are provided before and after the anticorrosion coating chamber. Since a fin for collecting mist rust preventive oil is erected inside each cabin, the mist rust preventive oil that is about to flow out from the inlet or outlet of the rust preventive coating chamber is in a negative pressure state. It is sucked into each of the cabins, is reliably collected by the collecting fins, is liquefied, flows down on the oil pan, and is actively collected, and a good working environment is created without the rust-preventing oil being scattered around. Can be maintained. Moreover, it is possible not only to supply the workpieces continuously but also to prevent the workpieces from moving at the entrance or the like, which enables mass production, and the quality can be kept constant. Play.

[Brief description of drawings]

FIG. 1 is a perspective view showing a part of a main part of a rust preventive oil coating device of the present invention in a partially cutaway manner.

FIG. 2 is a plan view showing a part of the rust preventive oil coating device of the present invention in a cutaway manner.

FIG. 3 is a side view showing a part of the rust preventive oil coating device of the present invention in a cutaway manner.

FIG. 4 is a diagram of an oil supply device used in the rust preventive oil application device of the invention.

[Explanation of symbols]

 1 Horizontal frame 2 and 3 Transport conveyor 6 Rust prevention coating chamber 6a and 6b Cabin 7 Collection fin

Claims (6)

[Claims] 1. A coating apparatus for coating a work with mist rust preventive oil, wherein each cabin provided with a negative pressure is provided before and after a rust preventive coating chamber provided on a horizontal frame across a conveyor. At the same time, a rust preventive oil coating device is provided inside each of the cabins, which is provided with a fin for collecting mist rust preventive oil which is provided upright along the transfer conveyor. 2. A rust preventive coating chamber is provided with a supply pipe from an oil supply pump, and a large number of spray nozzles are attached to the supply pipe so as to apply to the work of the conveyor. Anti-rust oil coating device. 3. The rust preventive oil coating device according to claim 2, wherein an oil pan is provided on a horizontal frame below the transport conveyor. 4. The rust preventive oil coating device according to claim 3, wherein an oil tank is provided in a lower portion of the rust preventive coating chamber in communication with an oil pan. 5. The rust preventive oil coating device according to claim 4, wherein an air suction pipe is connected to a suction pipe of an oil supply pump connected to the oil tank so as to reduce the pressure in each cabin. 6. The rust preventive oil coating device according to claim 5, wherein a flow rate adjusting valve is provided between the suction pipe and the air suction pipe.