JP2022132632A - Coating applicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coating applicator 10 that facilitates holding an upright attitude regardless of the type of a base material P.

SOLUTION: A coating applicator 10 of the present invention is a device having a suspending/holding tool 1 for suspending and holding a base material P and an application roll 3 for applying paint to the base material P. The coating applicator 10 applies paint to the base material P by transferring the paint on a surface of the coating roll 3 to the base material P being pulled up by the suspending/holding tool 1, and includes an attitude holding tool 6 for holding an upright attitude of the base material P. The attitude holding tool 6 can be provided on a lower side in the pull-up direction of the base material P relative to the coating roll 3. The attitude holding tool 6 may be movable in directions towards and away from the base material P. Frictional resistance of the attitude holding tool 6 may be smaller than that of the coating roll 3.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2022,JPO&INPIT

Description

TECHNICAL FIELD The present invention relates to a coating device used for coating a substrate with a coating material.

Apply resist coating, conductive coating, insulating coating, protective coating, reinforcing coating, UV light shielding coating, antistatic coating, coloring coating, functional coating agent, etc. to the surface of substrates, films, sheets, plates, panels, etc. Paint may be applied. One example is a case where a resist is applied to a printed wiring base material or a copper foil on its surface.

Conventionally, as a device for coating a substrate with a coating material, there is known one equipped with two coating rolls that come into contact with the substrate and a doctor bar that adjusts the amount of coating material supplied to the coating rolls (Patent Document 1).

In conventional coating apparatuses such as the coating apparatus described above, as shown in FIGS. When reaching the lower receiving tool C, both sides of the base material P are supported by the pressing pins D, and then both coating rolls B contact the base material P, and the paint supplied to the coating roll B is transferred to the base material P. Then, the paint is applied to the substrate P.

In the coating apparatus, the coating roll B rotates regardless of whether or not it is in contact with the base material P. Since there is a risk of being damaged by the pressing pins D when they are lifted by the rotational force of the coating roll B, both pressing pins D are configured to leave the base material P immediately before both the coating rolls B come into contact with the base material P. .

Japanese Unexamined Patent Application Publication No. 2018-20287

By the way, in recent years, flexible substrates have been widely used in smartphones, tablets, mobile phones, and the like. Since the flexible substrate is softer than the rigid substrate, it is difficult to maintain an upright posture.

The present invention has been made in view of the above circumstances, and an object to be solved is to provide a coating apparatus that can easily maintain an upright posture regardless of the type of substrate.

The coating device of the present invention is a coating device that includes a hoist for suspending a base material, a pressing pin for holding down the base material, and a coating roll for applying a coating material to the base material, and holds the base material in an upright posture. It is equipped with a posture holder that

Since the coating apparatus of the present invention is provided with a posture retainer that retains the upright posture of the substrate, the substrate can easily maintain the upright posture, and problems due to disturbance of the posture are less likely to occur.

(a) is a perspective view of the coating device of the present invention, (b) is an explanatory view of the coating device of (a) viewed from the left side, and (c) is the coating device of (a) viewed from the front side. Explanatory diagram in the case of (a) to (c) are operation explanatory diagrams of the coating apparatus shown in FIG. (a) to (c) are operation explanatory diagrams of the coating apparatus shown in FIG. (a) to (d) are operation explanatory diagrams when the coating device of another embodiment is viewed from the front side. (a) to (d) are longitudinal cross-sectional explanatory views of FIGS. 4 (a) to (d). (a) to (c) are operation explanatory diagrams of a conventional coating apparatus.

(Embodiment of Coating Apparatus)
An example of an embodiment of a coating device 10 of the present invention will be described with reference to the drawings. As an example, a coating device 10 shown in FIGS. A roll 3, a doctor bar 4 arranged on the outer side in the circumferential direction of the coating roll 3, a spill stopper 5 arranged on the outer side in the longitudinal direction of the coating portion of the coating roll 3, and in contact with or close to both surfaces of the substrate P A posture holder 6 for holding the standing posture of the substrate P, and a lower receiving device 7 for supporting the lower side of the lowered substrate P are provided.

Substrates P in the present application include substrates, films, sheets, plates, panels, and the like. The substrate referred to here includes rigid substrates, flexible substrates, and those to which copper foil is adhered. The paints of the present application include resist paints, conductive paints, insulating paints, protective paints, reinforcing paints, UV light shielding paints, antistatic paints, coloring paints, functional coating agents, and the like.

The hanging tool 1 is a member that holds and hangs the base material P. As shown in FIG. The hanging tool 1 of this embodiment is a clip-shaped member that clamps the upper part of the base material P. As shown in FIG. The sling 1 is configured to be raised and lowered by a lifting device (not shown). In this embodiment, the case where there are three hanging tools 1 is taken as an example, but the number of hanging tools 1 may be more or less than three.

The pressing pin 2 is a pin-shaped member that presses both sides of the substrate P that has been lowered to a predetermined position. The pressing pin 2 of this embodiment is configured to move in a direction approaching the base material P and a direction away from the base material P by driving means (not shown). In this embodiment, a case in which two of them are provided on the outside of each surface of the substrate P (four in total) is taken as an example. More or less than four pressing pins 2 may be provided.

The coating roll 3 is a roll for coating the base material P with a coating material. In this embodiment, a rubber roll is used as the coating roll 3 . Rubber rolls include natural rubber and synthetic rubber. Although not shown, the outer peripheral surface of the coating roll 3 is provided with irregularities (cells) of various shapes such as a lattice shape, a pyramid shape, and a spiral shape. The shape of the cell is an example and may be other than this. A solid roll without cells can also be used as the coating roll 3 .

Although not shown, the applicator roll 3 of this embodiment has a gear connected to a driving motor at one end and is rotatably supported by a bearing at the other end. The coating roll 3 of this embodiment is configured to always rotate regardless of whether it is in contact with the substrate P or not. The rotation direction of the coating roll 3 is the direction in which the substrate P is lifted when it comes into contact with the substrate P. Specifically, as shown in FIG. The coating roll 3 on the other side (right side in the figure) is rotated clockwise.

The doctor bar 4 is a member that abuts on the outer periphery of each coating roll 3 to form a paint reservoir between the coating rolls 3 and serves to scrape off excess paint supplied to the coating rolls 3. is. In this embodiment, a rectangular plate material that is elongated in the longitudinal direction of the coating roll 3 is used.

The spill stopper 5 is a member for preventing the paint stored in the paint reservoir from spilling to the outside. Each spill stopper 5 is adapted to approach or abut the longitudinal end face of the applicator.

The coating roll 3, the doctor bar 4 and the spill stopper 5 arranged on one side of the substrate P are moved toward or away from the substrate P as one unit. Similarly, the coating roll 3, the doctor bar 4, and the spill stopper 5 arranged on the other side of the base material P are moved as one unit in the direction toward the base material P or in the direction away from the base material P. be. This movement is performed by drive means (not shown).

The attitude holder 6 is a member for holding the upright attitude of the base material P by contacting or adjoining both surfaces of the base material P. As shown in FIG. The posture holder 6 of this embodiment is a rectangular parallelepiped block made of rubber. In this embodiment, two attitude holders 6 are provided on the outer side of one surface of the base material P and two on the outer side of the other surface (four in total). As shown in FIGS. 1(a) and 1(c), the attitude holders 6 on the outside of each surface are provided at intervals in the width direction of the substrate P. As shown in FIGS. The number of posture holders 6 can be more or less than four.

Each posture holder 6 of this embodiment is configured to move in a direction approaching the base material P and a direction away from the base material P by driving means (not shown). Although each attitude holder 6 can be configured to move individually, in this embodiment, two attitude holders 6 holding the same surface of the base material P are moved synchronously. In this embodiment, the posture holder 6 is moved separately from the coating roll 3, but it may be moved in synchronization with the coating roll 3. Each posture holder 6 can also be fixed at a fixed position without moving.

Each posture holder 6 is provided below the coating roll 3 . The posture holder 6 can be provided so as to be in contact with the application roll 3 or can be provided separately. When provided so as to contact the application roll 3 , the upper surface of the attitude holder 6 may be recessed in an arc shape along the outer periphery of the application roll 3 .

Although the posture holder 6 is made of rubber in this embodiment, the posture holder 6 may be made of a material other than rubber. In any case, it is preferable to use a material with low frictional resistance so as not to hinder the smooth rise of the base material P when the coating material is applied by the coating roll 3 . The posture holder 6 can also have a shape with a small contact area so as not to hinder the smooth rise of the substrate P. Further, at least the contact surface of the attitude holder 6 may be treated with fluorine resin to reduce frictional resistance.

The lower receiving tool 7 is a member for supporting the lower end side of the base material P that has been lowered to a predetermined position. In this embodiment, as the lower receiving member 7, a gutter-shaped member having a U-shape upward with respect to the width direction of the substrate P is used. The lower receiving member 7 is arranged at a position lower than the application roll 3, the attitude holder 6, and the pressing pin 2.例文帳に追加The lower receiving tool 7 is positioned so that the vicinity of the upper end of the base material P (the upper end of the paint application portion) is approximately the same height as the coating roll 3 when the base material P reaches the lower receiving tool 7. is provided in

The coating device 10 described here is an example, and the coating device 10 of the present invention may have a configuration different from that of the above embodiment. In any case, by providing the posture holder 6, the flexible substrate P can easily maintain its upright posture, and inconvenience due to posture disturbance is less likely to occur. Further, not all of the components of the coating apparatus 10 are essential components, and unnecessary components can be omitted as appropriate.

(motion)
The coating device 10 of this embodiment operates as follows.
(1) FIG. 2(a) shows a state in which the substrate P is hung by the hanging tool 1. FIG.
(2) The substrate P held by the hoisting tool 1 is lowered to a predetermined position and supported by the lower receiving tool 7 as shown in FIG.
(3) When the substrate P is supported by the lower support 7, the pressing pins 2 on both sides of the substrate P come into contact with the substrate P to hold the substrate P as shown in FIG. 2(c). At this time, just before the substrate P is held by the pressing pins 2, the clamping of the substrate P by the lifting tool 1 is released.
(4) When the base material P is held by the pressing pins 2, the coating rolls 3 on both sides of the base material P come into contact with the base material P as shown in FIG. is transferred to the substrate P. At this time, just before the substrate P is held by the coating roll 3, the holding of the substrate P by the pressing pins 2 is released.
(5) When the application roll 3 abuts on the base material P in (4) above, the attitude holders 6 approach or come into contact with both sides of the base material P, and the upright attitude of the base material P is maintained.
(6) When the coating by the coating roll 3 is started, the suspender 1 descends and the upper end portion of the substrate P is clamped as shown in FIG. 3(b).
(7) When the upper end of the base material P is clamped by the lifting tool 1, the lifting tool 1 starts to rise as shown in FIG. 3(c), and the base material P is lifted upward by the lifting. At this time, the paint on the surface of the coating roll 3 in contact with the base material P is transferred to the base material P, and the application of the paint to the base material P is completed.

The attitude holder 6 can be separated from the base material P just before the application roll 3 contacts the base material P or just before the upper end of the base material P is clamped by the lifting tool 1 .

(Other embodiments)
In the above-described embodiment, the case where the upper end portion of the base material P is held by the hanging tool 1 is taken as an example. Suspension tools 1 for holding both ends of the substrate P in the width direction as shown in a) to (d) and FIGS. 5(a) to (d) are sometimes used.

The hanging tool 1 has a length that can hold the base material P over its entire length or substantially its entire length. This hanging tool 1 is used for holding a base material P having a coating part P1 to which paint is applied and a non-coating part P2 to which no paint is applied, and holds the non-coating part P2 of the base material P. . The coating device 10 of the present invention can also be provided with such a hanging tool 1 .

The coating device 10 equipped with the hanging tool 1 operates as follows.
(1) FIGS. 4(a) and 5(a) show a state in which the substrate P is hung by the hanging tool 1. FIG.
(2) The substrate P held by the hoisting tool 1 descends to a predetermined position and is supported by the lower receiving tool 7, as shown in FIGS. 4(b) and 5(b).
(3) When the base material P is supported by the lower receiving tool 7, the gripping of the base material P by the lifting tool 1 is temporarily released as shown in FIG. A two-dot chain line in FIG. 4(c) means that the clamping of the base material P by the lifting tool 1 is released).
(4) When the clamping of the base material P by the lifting tool 1 is released, the pressing pins 2 on both sides of the base material P come into contact with the base material P as shown in FIGS. 4(c) and 5(c). While the base material P is held, the attitude holder 6 approaches or contacts the base material P, and the upright attitude of the base material P is maintained.
(5) When the substrate P is held by the pressing pins 2 and held in its upright posture by the posture holder 6, the lifting device 1 is used to hold the substrate P, as shown in FIGS. 4(d) and 5(d). The substrate P is sandwiched again. At this time, the holding of the substrate P by the pressing pins 2 is released immediately before the substrate P is clamped by the lifting tool 1 .
(6) When the substrate P is nipped by the hoisting tool 1, as shown in FIGS. The paint held on the surface of the application roll 3 is transferred to the substrate P. At this time, the lifting tool 1 and the coating roll 3 are arranged so that the lifting speed of the substrate P by the lifting tool 1 and the lifting speed by the rotation force of the coating roll 3 are the same.
(7) When the base material P is lifted by the lifting tool 1 and the application roll 3, the paint on the surface of the application roll 3 in contact with the base material P is transferred to the application part P1 of the base material P, and the paint is applied to the base material P. is completed.

The coating apparatus 10 of the present invention can be used for coating various substrates P, and is particularly suitable for coating a flexible substrate P or a copper foil adhered to the surface of the flexible substrate P with a resist or the like. be able to.

REFERENCE SIGNS LIST 1 lifting tool 2 holding pin 3 application roll 4 doctor bar 5 spill stopper 6 posture holding tool 7 lower receiving tool 10 coating device A lifting tool B applying roll C lower receiving tool D pressing pin P base material (flexible substrate)
P1 Applied part P2 Non-applied part

Claims (5)

At least a lifting tool for suspending a base material and a coating roll for applying a coating material to the base material are provided. In the coating device for coating,
Equipped with a posture holder that holds the standing posture of the base material,
A coating device characterized by: In the coating device according to claim 1,
The attitude holder is provided below the coating roll in the direction in which the substrate is pulled up,
A coating device characterized by: In the coating device according to claim 1 or claim 2,
The attitude holder is movable in a direction toward and away from the substrate,
A coating device characterized by: In the coating device according to any one of claims 1 to 3,
The posture holder has less frictional resistance than the coating roll,
A coating device characterized by: In the coating device according to any one of claims 1 to 4,
The hanging tool has a length that can hold the entire length or substantially the entire length of both ends in the width direction of the base material.
A coating device characterized by:

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