JPH04243565A - Liquid coating device - Google Patents

Abstract

PURPOSE:To contrive a way to apply uniformly a predetermined amt. of liq. to an article by providing in a liq. coating chamber a rotary stand adapted to rotate with a net-like article container supported thereon, a shower nozzle for spraying the article container with a liq. and a plurality of air blow nozzles for directing compressed air against the article container in the directions different from each other. CONSTITUTION:A liq. coating device which comprises a rotary stand 3 provided in a liq. coating chamber 2 and adapted to rotate with a net-like container 4 supported thereon; a shower nozzle 5 for spraying the article container 4 with a liq.; and a plurality of air blow nozzles 6 and 7 for directing compressed air against the article container 4 in the directions different from each other, whereby the position of the article in the rotating container 4 can be changed, the article can be coated uniformly with the liq. and an excessive liq. adhering to the article can be blown off with the compressed air, leading to the achievement of a uniform application of a predetermined amt. of liq. to the article.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to an apparatus for applying liquid to the surface of a product.

0002

[Prior art] For example, oil (liquid) is applied to an O-ring (product).
Conventionally, when applying oil, a large number of O-rings were placed in a mesh container, and this container was placed into an oil tank to coat the O-rings with oil, and then the container was removed from the oil tank. By leaving the container for a certain period of time, excess oil adhering to the O-ring was removed, and a predetermined amount of oil was applied to the O-ring.

0003

[Problems to be Solved by the Invention] However, according to the above conventional method, oil may not be applied to the overlapping parts of the O-rings, or oil may not be drained sufficiently, resulting in excess oil adhering to the O-rings. It was difficult to uniformly apply oil to each O-ring.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a liquid coating device that can solve the problems of the prior art.

[0005]

[Means for Solving the Problems] That is, the present invention provides a rotary table that supports and rotates a mesh-shaped product container in a liquid application chamber, a shower nozzle that sprays liquid onto the product container, and a rotating table that supports and rotates a mesh-shaped product container. A plurality of air blow nozzles are installed that blow compressed air onto the product container from different directions.

[0006]

[Operation] While the compressed air blown from the air blow nozzle randomly changes the posture of the product inside the mesh-like product container, the product container is rotated by the rotary table, and the liquid jetted from the shower nozzle is uniformly distributed over the product inside the product container. Apply.

[0007] After the application of this liquid is completed, the excess oil adhering to the product in the product container is forcibly removed (drained) using compressed air blown from the air blow nozzle.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows a liquid coating apparatus 1 according to a first embodiment, and in this figure, reference numeral 2 denotes a liquid coating chamber. A rotating table 3 rotated by a power device (not shown) is installed in the liquid application chamber 2, and a plurality of mesh-shaped product containers 4 are supported by the rotating table 3.

[0010] Also, in this liquid application chamber 2, there is a product container 4.
A plurality of shower nozzles 5 are installed to spray oil as a liquid onto the product container 4, and a plurality of sets of air blow nozzles 6 and 7 are installed to blow compressed air onto the product container 4 from different directions.

Of these, the shower nozzle 5 is connected to an oil tank 8. Note that the shower nozzle 5 is installed at a position lower than the oil tank 8 by a predetermined dimension (H) so that the oil in the oil tank 8 has a predetermined position head. Further, a heater 9 is installed between the shower nozzle 5 and the oil tank 8 to optimize the viscosity of the oil. On the other hand, air blow nozzles 6 and 7 are connected to the compressor 10.

Reference numeral 11 denotes a pump, and this pump 11 returns the oil accumulated in the lower part of the liquid application chamber 2 to the oil tank 8 through a plurality of filters 12 with different meshes. This allows the oil to be used repeatedly.

Reference numeral 13 is a valve for opening and closing the shower nozzle 5, and reference numeral 14 is an exhaust duct provided at the upper part of the liquid application chamber 2.

The liquid applicator 1 configured as described above blows compressed air blown from the air blow nozzles 6 and 7 onto the product container 4 containing a large number of O-rings (not shown) as products, and the compressed air blows the O-rings. While the posture of the product container 4 is randomly changed and the product container 4 is rotated by the rotating table 3, oil is sprayed from the shower nozzle 5 onto the product container 4,
Apply oil evenly to the O-ring.

After spraying oil from the shower nozzle 5 for a predetermined period of time, the shower nozzle 5 is closed, and compressed air is blown onto the rotating product container 4 from the air blow nozzles 6 and 7 to blow away excess oil adhering to the O-ring. Make a cut.

As described above, according to this embodiment, an oil film of a predetermined thickness can be uniformly formed on the O-ring.

FIG. 2 shows a liquid coating device 1 according to a second embodiment, and the differences from the first embodiment are as follows.
An oil tank 8 is located between the pump 11 and the shower nozzle 5.
The point is that the oil is directly injected from the shower nozzle 5 using the discharge pressure of the pump 11 without providing a
9 is a pressure control valve that adjusts the discharge pressure, and 9 is a heater that adjusts the viscosity of the accumulated oil in the liquid application chamber 2.

Although each of the above embodiments has been explained using the case of applying oil to an O-ring as an example, it is not limited to this, and can be applied to a wide range of applications, such as applying paint to a small and lightweight disc. can do. Further, the liquid application device 1 of this embodiment is automatically operated by a control device (not shown) or manually by operating a switch or the like.

[0019]

As explained above, the present invention provides a rotary table that supports and rotates a mesh-shaped product container in a liquid application chamber, a shower nozzle that sprays liquid onto the product container, and a shower nozzle that sprays liquid onto the product container. By installing multiple air blow nozzles that blow compressed air into the container from different directions, the posture of the product inside the rotating product container is randomly changed, the liquid is evenly applied to the product, and any excess liquid adhering to the product is removed. Since the liquid can be removed by blowing it out with compressed air, it is possible to uniformly apply a predetermined amount of liquid to the product.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of a liquid coating device showing a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a liquid coating device showing a second embodiment of the present invention.

[Explanation of symbols]

1...Liquid coating device 2...Liquid application chamber 3... Rotating table 4...Product container 5...Shower nozzle 6...Air blow nozzle 7...Air blow nozzle

Claims (1)

[Claims] 1. A rotary table that supports and rotates a mesh-shaped product container is installed in a liquid application chamber, and a shower nozzle that injects liquid into the product container and compressed air are applied to the product container from different directions. A liquid application device characterized by being equipped with a plurality of air blow nozzles.