JPH0316184B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wiping device useful for wiping off only the coating film on the top surface of an uneven pattern on the decorative surface of a hard substrate, particularly a building material made of a metal plate or a synthetic resin plate.

For example, in order to manufacture a building material that has a decorative surface with a concave-convex pattern and has sand attached only to the concave-patterned surface, a base coat is applied to the decorative surface, and then a wiping roller is used to remove the top of the convex surface (hereinafter simply referred to as the mesa section). ), it was common practice to wipe off the base coat present on the surface, then apply sand to the entire decorative surface, blow away any unadhered sand, apply an overcoat over it, and allow the film to dry. In addition, when manufacturing building materials with two-tone decorative surfaces, in order to make the colors of the recesses and mesa areas clearer, it is necessary to wipe off the paint film on the mesa parts and then form a paint film that will be applied to the mesa parts later. was common. At this time, various devices have been proposed for wiping off the coating film on the mesa portion. However, the cleaning liquid cannot reliably wipe off the paint film from the mesa area, and the cleaning liquid or paint film remains on the mesa area, resulting in sparse sand adhesion to the mesa area, mottled color, and a beautiful decorative surface. I couldn't get it.

In order to eliminate such drawbacks, the present invention provides a roller structure in which the surface layer of the outer circumferential surface of the wiping roller has a somewhat elastic structure, and a roller structure is provided on the outer circumferential surface of the wiping roller to remove the cleaning liquid. The cleaning liquid is supplied to the outer circumferential surface, and then spread with a free roller.
The purpose of the present invention is to propose an apparatus that can manufacture building materials with beautiful decorative surfaces by wiping off the cleaning liquid with a doctor plate and removing it to the outside of the roller so that no cleaning liquid or the like remains on the mesa portion.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an apparatus for wiping off a coating film on a mesa portion according to the present invention will be described in detail below with reference to the drawings. Figures 1 and 2 are a side view and a front view showing the basic configuration of the above device, where 1 is the lower roller, which is made of a hard material such as metal and mainly functions as a receiving surface, a feeding surface, and a guide. It is. Reference numeral 2 is a wiping roller, on the surface of which is formed by pasting or molding an elastic material 3 made of a rubber, synthetic rubber, or synthetic resin material with some elasticity, for example, a hardness of about 40 to 80 degrees. It is. The wiping roller 2 is mainly used to wipe away the paint film on the mesa portion of the building material, which will be described later, with a cleaned outer peripheral surface to which no paint film is attached, and also to transfer the building material in the direction of arrow A while holding the lower roller 1 and the building material between them. . Reference numeral 4 denotes a nozzle in which the cleaning liquid 5 is wiped off by a nozzle, and a nozzle supply port 4a is disposed at a position away from the outer circumferential surface of the roller 2, particularly at a position where it flows down in the rotational direction. In other words, the supply port 4a is arranged on the outer circumferential surface side of the supply side of building materials, which will be described later. This is cleaning solution 5
This is to prevent the water from running down onto the decorative surface of the building material after it has been wiped off. 6 Cleaning liquid 5 with free roller
It spreads on the outer circumferential surface of the wiping roller 2 on the building material supply side and is useful for cleaning the wiped paint adhering to the outer circumferential surface. It is brought into contact under pressure at a position below 4a. 7
The doctor plate is used to slide the wiping roller 2 between the free roller 6 from the position where the wiping roller 2 contacts the decorative surface of the building material to the outer circumferential surface of the wiping roller 2 on the side to which the building material is supplied without going against the rotation of the wiping roller 2. The cleaning liquid 5 present on the outer peripheral surface of the roller is wiped off and expelled to the outside of the roller 2 by contacting the roller 2 under pressure. That is, the doctor plate 7 is composed of a somewhat elastic plate-like plate portion 8 and a weight 9 or a spring (not shown). Reference numeral 10 denotes a container for storing cleaning liquid, which has a discharge port 11 at one end. Reference numeral 12 is a building material made of a hard base material, and as shown in FIG. The depth Δd is about 0.3 to 1.5 mm. Note that there are various patterns of the uneven pattern. To further explain the above device, the width W ₀ of the decorative surface 13, the width W ₁ for fitting the lower roller,
Width W ₂ of lower roll 1, width W ₃ of wiping roller 2,
Width W ₄ of free roller 6, width W ₅ of container 10, length
L ₁ , the diameter of lower roller 1 is D ₁ , wiping roller 2
Assuming the diameter D ₂ of the free roller 6 and the diameter D ₃ of the free roller 6,
W ₁ > W ₂ , W ₃ > W ₀ , W ₄ > W ₃ , W ₅ > W ₃ , D ₁ =
D ₂ , D ₂ > D ₃ , L ₁ > D Rank _1st .

Next, the operation will be explained.

Now, a plurality of the above-mentioned devices (not shown in the figure)
4) are arranged in parallel to wipe off the paint 16a on the mesa part 15 of the paint film 16 that has just been applied to the entire surface of the decorative surface 13, and then sprinkle sand 17. However, it is assumed that the excess sand and the sand 17 on the mesa portion 15 are removed by wind blowing. In addition, the lower roller 1 and wiping roller 2 of each device are driven by gears, chains, etc. in the direction of the arrows and at approximately the same speed, and the contact portion of the elastic material 3 that is in contact with the lower roller 1 is slightly deformed. Assume that the pressure is applied to the Therefore, the first device coated the decorative surface 13 of the building material 12 with base coat 1.
6 is fed immediately after being applied, while the lower roller 1 and the wiping roller 2 sandwich the building material 12, a portion of the paint 16a on the mesa portion is wiped off with the cleaned outer circumferential surface, and then the paint 16a is removed from the mesa portion to the nozzle supply port 4a. Rotate. Then, a cleaning liquid 5 is supplied to the wiped outer circumferential surface, stored at the position of the free roller 6, and the outer circumferential surface is cleaned, and the washed liquid is dropped into a container 10 from both sides of the wiping roller 2. In addition, since the cleaning liquid 5 flows down to a certain extent on the outer circumferential surface of the wiping roller 2 that has been cleaned by the free roller 6 as it rotates,
This is completely scraped off with a doctor plate 7 and brought into contact with the decorative surface 13 as a cleaned outer peripheral surface. By performing these steps in each device in sequence, the mesa portion 1
The base coat 16a of No. 5 is completely wiped off. Note that the number of devices and the pressure are determined empirically. Next, sand 17 is spread from a sand spreader (not shown) over the entire surface of the decorative surface as shown in FIG. After that, although not shown, an overcoat is applied to the entire surface of the decorative surface and is dried to complete the decorative surface.

What has been described above is only one embodiment of the device according to the present invention, and as shown in FIG.
A gap of Δt may be provided between the free roller 6 and the elastic member 3 to make it easier to clean the outer surface of the elastic material 3, or the above-mentioned device may be arranged in multiple stages in parallel, although not shown. Also, doctor plate 7
Attach it as shown by the one-dot chain line in Figure 1,
It can also be configured to remove debris.

As described above, with the device for wiping off the paint film on the top surface of the convex portion according to the present invention, the cleaning liquid does not leak onto the wiped surface at all, so sand does not adhere to the mesa portion, and a decorative surface with a beautiful appearance can be formed. It has characteristics. The outer circumferential surface of the wiping roller is configured to reliably wash away any paint that has been wiped off and then wipe it off, so the coating film on the mesa portion can be neatly wiped off. It has the characteristic of being able to guide building materials without displacing them because it clamps and transfers them under elasticity. moreover,
The cleaning liquid is stored in a container at the bottom, filtered, and circulated, so the cleaning liquid can be used effectively. It has the characteristic that the cleaning solution does not leak onto the decorative surface of the building material that has been wiped off.

[Brief explanation of drawings]

1 and 2 are a side view and a front view of a device for wiping off a coating film on the top surface of a convex portion according to the present invention, FIG. 3 is a perspective view showing an example of a building material, and FIGS. 4 a to d are building materials. 5th manufacturing process diagram showing a part of the decorative surface of
The figure is an explanatory diagram showing another embodiment. 1...lower roller, 2...wiping roller, 6...
...Free roller, 7...Doctor plate.

Claims (1)

[Claims] 1 A lower roller 1 made of a hard material, a somewhat elastic wiping roller 2 that wipes off the coating film 16a on the top surface 15 of the convex portion of the building material 12 made of a hard base material, a nozzle 4 that supplies the cleaning liquid 5, and the cleaning liquid 5 a free roller 6 that spreads the water on the outer peripheral surface of the wiping roller 2;
and a doctor plate 7 for removing the cleaning liquid 5 adhering to the outer peripheral surface of the wiping roller 2 to the outside of the wiping roller 2. A wiping roller 2 is disposed on the surface side of the roller 1, and the roller 1 is disposed oppositely to feed the building material 12 while pinching it under pressure, and the outer periphery of the wiping roller 2 faces the supply side of the building material 12. A device for wiping off a coating film 16a on a top surface 15 of a convex portion, characterized in that a supply port 4a of the nozzle 4, a free roller 6, and a doctor plate 7 are arranged in this order on the surface.