JPH04100562A - Device for successive coating of plate-like body - Google Patents

Abstract

PURPOSE:To avoid the uneven coating resulting from the shocks produced upon feed of a plate-like body in order to form a uniform coating film by providing an inclined part at a point of the intersection of a line moving surface where a coating means is provided and an inclined line moving surface formed upwardly obliquely from a plate-like body supply side. CONSTITUTION:An inclined line part B is provided at a point of the intersection of a horizontal line moving surface and a line moving surface formed upwardly obliquely from a plate-like body supply part and an edge separating part (c) is provided between a preceding glass plate-like body 1i-1 and the inclined line part B. After a plate-like body is rotated pivotally on a feed roller 2i, the edge separating part (c) is formed between the plate-like body and a succeeding glass plate-like body 1i+1 on its rear side and, for this reason, the shocks produced upon feeding of a plate-like body 1n by a feed arm 3 are not transmitted to plate-like bodies 1 in a series on the downstream side of the inclined line part B, whereby an uneven coating can be avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a continuous coating device that continuously coats a group of plate-like bodies that are continuously traveling on a line.

[Conventional technology]

Glass that selectively transmits light in a certain desired wavelength range, that is, an optical filter, is widely used in optical equipment such as cameras, televisions, lasers, display equipment, and the like. This optical filter is manufactured by adding a colorant to a glass raw material to cause light absorption, or by laminating a dielectric film with a high refractive index and a dielectric film with a low refractive index on a glass substrate. In addition, for example, in the case of glass plates used for displays (displays) on LCD televisions, computers, etc., attempts have been made to apply a special coating to the glass surface layer to increase the contrast in order to make the displays easier to see. There is.

In this way, for example, plate-shaped bodies such as glass, which have been subjected to coating film treatment, are used in various legal fields depending on the purpose.

In order to obtain the above-mentioned surface coating material, coating treatment is carried out using a continuous coating device as shown in FIG. 3, for example. The continuous coating device continuously supplies the plate-like object 10 to be coated onto the feeding rollers 12, the workpiece 2, etc. by means of a plate-like object supplying means 11 driven by a cylinder or the like (not shown), and the plate-like objects 10 to be coated are continuously fed onto the feed roller 12, the workpiece 2... With a coating means such as a coating head 13, the coating is continuously run.
The coating liquid is continuously applied to the surfaces of the group of plate-like bodies to be coated 10, 10, . The coated plate IO on which the coating film 14 has been formed is then discharged to the outside by the coated plate discharge means 15.

[Problem to be solved by the invention]

When coating a plate-like object such as glass, as mentioned above, apply the coating continuously so that the leading end of the next glass plate is in close contact with the rear end of the preceding glass plate on the feed roller. However, due to the impact when connecting to the rear end of the preceding glass plate, coating unevenness A occurs at the coating section as shown in Figure 4. It was happening.

This coating unevenness A is caused by concavities in the thin film portion formed when the glass plate-shaped body 10, which is continuously traveling at a constant speed, is suddenly pushed out in the advancing direction by the impact during the supply, and the subsequent Due to the reaction, an excessively thick white part is continuously formed in the advancing part.

Conventionally, in order to suppress this coating unevenness A, by controlling the supply extrusion speed of the plate-shaped object to be coated,
Although attempts were made to alleviate the impact during connection, this countermeasure method could not completely eliminate the impact during connection, and uneven coating A still occurred on the surface of the plate-like object to be coated.

Therefore, an object of the present invention is to provide a continuous coating method that can eliminate coating unevenness that occurs on the surface of a plate to be coated due to impact when the plate is supplied, and can obtain a coated plate of good quality with a uniform coating film. Our goal is to provide the following.

[Means to solve the problem]

The above problem is solved by a conveyance means for moving the plate-shaped body in the line direction, a plate-shaped body supply means for continuously supplying the plate-shaped body on this conveyance line, and a continuous connection and supply of the plate-shaped body by this plate-shaped body supply means. In a continuous coating device comprising a coating means for continuously applying a coating liquid to a group of plate-like bodies running in series in a belt shape on a conveying line, said This problem can be solved by forming a bent part where the line running surface on which the coating means is disposed intersects with the upwardly inclined line running surface from the plate-shaped body supply section side.

[Effect]

In the present invention, on the upstream side of the coating means arrangement position of the conveyance line, the line running surface of the portion where the coating means is disposed intersects with the upwardly inclined line running surface from the plate-shaped body supply section side. A bent portion is formed. Therefore, as shown in FIG. 2, the edges of the plate-shaped body passing through this bend are always cut between the plate-shaped body on the downstream side or the upstream side. Since the transmission of the impact that occurs during supply is blocked by the plate-shaped body passing through the bent part, the impact is not transmitted to the group of plate-shaped bodies downstream from it, and uneven coating may occur at the coating part. do not have.

[Specific configuration of the invention]

The present invention will be explained in detail below based on the embodiment shown in FIG.

FIG. 1 shows a continuous coating line diagram of a plate-shaped body according to the present invention.

For example, when continuously coating a plate-like object such as a glass plate, the continuous coating line continuously supplies the glass plate-like object l onto the feed rollers 2.2 constituting the conveying means,
The coating liquid is continuously applied from the coating head 4 to the glass plate-like bodies 1.1, which are continuously running in a band-like manner on a line at a constant speed.

The feeding of the glass plate l onto the feed rollers 2.2 is carried out by a supply arm 3 which is movable forward and backward in the line supply direction using a cylinder or the like (not shown). 1. A glass plate-shaped body 1. is supplied to the rear end of -1. The advancement length of the supply arm 3 is adjusted so that the tip ends of the supply arm 3 are in close contact with each other, and the delivery speed is adjusted so that the impact during supply is alleviated as much as possible.

In the continuous coating device of the present invention, in the middle part of the upstream conveyance line of the coating means 4, the horizontal line running surface of the coating means disposed portion and the line running surface formed with an upward slope from the plate-shaped body supply section intersect. A bending portion B is formed. At this bending part B, as shown in FIG. 2, the glass plate-like body 1 first reaches the bending part B, as shown in FIG. 2(a), the preceding glass plate-like body 1 ．． −
An edge cut portion C is formed between the I and I. After that, even if the glass plate I continues to travel, the feed roller 2. Using the glass plate-like body 1 as a fulcrum. An edge cut portion is similarly formed on the 6th portion until the rotation occurs. Then, the glass plate-like body 1 is moved to the feed roller 2. After rotating with
．． Since an edge cut portion C is formed between the bent portion B and
In this case, the edge cut portion C is always formed on the continuous plate-like body 1.1. Therefore, the impact generated when the feed arm 3 feeds the plate-shaped body 1° is not transmitted to the plate-shaped bodies 1.1 on the downstream side of the bending portion B (this makes it possible to eliminate coating unevenness). can.

Note that the configuration angle θ of the bent portion is such that no slippage occurs on the inclined conveyance line, and the glass plate-like object 1. It is desirable to set the angle to such an extent that no impact occurs due to the rotation of the angle, specifically about 10 to 30 degrees.

On the other hand, the coating head 4 has a pocket 4a for supplying the coating liquid inside thereof, and a slit 4b communicating from the pocket 4a to the discharge port. The coating liquid is applied onto the glass plate 1 through the slit 4b. Note that the application means is not limited to the application means such as the application head 4, and may be, for example, application means such as applicator application.

Thereafter, the glass plate-like body 1 on which the coating film 5 has been formed on the surface layer by the coating head 4 is discharged out of the line by the discharge arm 6 at the end portion of the feed roller group 2.2.

〔Effect of the invention〕

As explained in detail above, according to the present invention, it is possible to eliminate coating unevenness due to impact during feeding of a plate-shaped body and to stably obtain a high-quality coated plate-shaped body on which a uniform coating film is formed.

[Brief explanation of drawings]

Fig. 1 is a continuous coating line diagram of a plate-shaped body according to the present invention, Fig. 2 (a) to (C) are diagrams showing the feeding state of a glass plate-shaped body at a bending part of the conveyance line, and Fig. 3 is a diagram of a conventional coating line. FIG. 4 is a diagram of the continuous coating line for the plate-shaped body, and is a diagram showing the state of coating by the continuous coating line shown in FIG. 1...Glass plate-shaped body, 2...Feed roller 3...
Supply arm, 4... Application head, 5... Coating film, 6.
・・Discharge arm, A・・Uneven coating

Claims (1)

[Claims] (1) A conveyance means for moving the plate-like body in the line direction, a plate-like body supply means for continuously supplying the plate-like body onto the conveyance line,
In a continuous coating device comprising a coating means for continuously applying a coating liquid to a group of plate-like bodies that are continuously connected and supplied by the plate-like body supply means and run in series in a strip on a line, the above-mentioned A bent part is formed on the upstream side of the coating means arrangement position of the conveyance line, where the line running surface on which the coating means is disposed intersects with the upwardly inclined line running surface from the plate-shaped body supplying section side. A continuous coating device for plate-shaped materials.